[3447] | 1 | !> @file src/inifor_transform.f90 |
---|
[2696] | 2 | !------------------------------------------------------------------------------! |
---|
[2718] | 3 | ! This file is part of the PALM model system. |
---|
[2696] | 4 | ! |
---|
[2718] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
---|
| 6 | ! terms of the GNU General Public License as published by the Free Software |
---|
| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
---|
[2696] | 8 | ! version. |
---|
| 9 | ! |
---|
[2718] | 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
---|
| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
---|
| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
---|
[2696] | 13 | ! |
---|
| 14 | ! You should have received a copy of the GNU General Public License along with |
---|
| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
---|
| 16 | ! |
---|
[4481] | 17 | ! Copyright 2017-2020 Leibniz Universitaet Hannover |
---|
| 18 | ! Copyright 2017-2020 Deutscher Wetterdienst Offenbach |
---|
[2696] | 19 | !------------------------------------------------------------------------------! |
---|
| 20 | ! |
---|
| 21 | ! Current revisions: |
---|
| 22 | ! ----------------- |
---|
[4675] | 23 | ! |
---|
| 24 | ! |
---|
[3183] | 25 | ! Former revisions: |
---|
| 26 | ! ----------------- |
---|
| 27 | ! $Id: inifor_transform.f90 4714 2020-09-29 12:47:35Z suehring $ |
---|
[4714] | 28 | ! Fixed off-by-one indexing error for profile quantities |
---|
| 29 | ! |
---|
| 30 | ! |
---|
| 31 | ! 4675 2020-09-11 10:00:26Z eckhard |
---|
[4675] | 32 | ! Improved code formatting |
---|
| 33 | ! |
---|
| 34 | ! |
---|
| 35 | ! 4553 2020-06-03 16:34:15Z eckhard |
---|
[4553] | 36 | ! Improved code readability and documentation |
---|
| 37 | ! |
---|
| 38 | ! |
---|
| 39 | ! 4523 2020-05-07 15:58:16Z eckhard |
---|
[4523] | 40 | ! bugfix: pressure extrapolation |
---|
| 41 | ! respect integer working precision (iwp) specified in inifor_defs.f90 |
---|
| 42 | ! moved fill_water_cells() routine here |
---|
| 43 | ! remove unused routine, appropriately renamed constand_density_pressure() |
---|
| 44 | ! |
---|
| 45 | ! |
---|
| 46 | ! 4481 2020-03-31 18:55:54Z maronga |
---|
[3866] | 47 | ! Use PALM's working precision |
---|
| 48 | ! Improved coding style |
---|
| 49 | ! |
---|
| 50 | ! |
---|
| 51 | ! 3785 2019-03-06 10:41:14Z eckhard |
---|
[3779] | 52 | ! Remove basic state pressure before computing geostrophic wind |
---|
| 53 | ! - Introduced new level-based profile averaging routine that does not rely on |
---|
| 54 | ! external weights average_profile() |
---|
| 55 | ! - Renamed original weights-based routine average_profile() -> |
---|
| 56 | ! interp_average_profile() |
---|
| 57 | ! Average geostrophic wind components on coarse COSMO levels instead of fine PALM levels |
---|
| 58 | ! - Introduced new profile interpolation routine for interpolating single |
---|
| 59 | ! profiles from COSMO to PALM levels |
---|
| 60 | ! - Renamed original array variant interpolate_1d() -> interpolate_1d_arr() |
---|
| 61 | ! |
---|
| 62 | ! |
---|
| 63 | ! |
---|
| 64 | ! 3716 2019-02-05 17:02:38Z eckhard |
---|
[3716] | 65 | ! Include out-of-bounds error message in log |
---|
| 66 | ! |
---|
| 67 | ! |
---|
| 68 | ! 3680 2019-01-18 14:54:12Z knoop |
---|
[3678] | 69 | ! Check if set of averaging columns is empty |
---|
| 70 | ! |
---|
| 71 | ! |
---|
| 72 | ! 3618 2018-12-10 13:25:22Z eckhard |
---|
[3618] | 73 | ! Prefixed all INIFOR modules with inifor_, removed unused variables |
---|
| 74 | ! |
---|
| 75 | ! |
---|
| 76 | ! 3615 2018-12-10 07:21:03Z raasch |
---|
[3615] | 77 | ! bugfix: abort replaced by inifor_abort |
---|
| 78 | ! |
---|
| 79 | ! 3614 2018-12-10 07:05:46Z raasch |
---|
[3614] | 80 | ! unused variables removed |
---|
| 81 | ! |
---|
| 82 | ! 3613 2018-12-07 18:20:37Z eckhard |
---|
[3613] | 83 | ! Use averaged heights profile for level-based averaging instead of modified |
---|
| 84 | ! COSMO heights array |
---|
| 85 | ! |
---|
| 86 | ! |
---|
| 87 | ! 3557 2018-11-22 16:01:22Z eckhard |
---|
[3557] | 88 | ! Updated documentation |
---|
| 89 | ! |
---|
| 90 | ! |
---|
| 91 | ! 3537 2018-11-20 10:53:14Z eckhard |
---|
[3534] | 92 | ! bugfix: working precision added |
---|
| 93 | ! |
---|
| 94 | ! 3447 2018-10-29 15:52:54Z eckhard |
---|
[3447] | 95 | ! Renamed source files for compatibilty with PALM build system |
---|
| 96 | ! |
---|
| 97 | ! |
---|
| 98 | ! 3395 2018-10-22 17:32:49Z eckhard |
---|
[3395] | 99 | ! Switched addressing of averaging regions from index bounds to list of columns |
---|
| 100 | ! Added routines for the computation of geostrophic winds including: |
---|
| 101 | ! - the downward extrapolation of density (linear) and |
---|
| 102 | ! - pressure (hydrostatic equation) and |
---|
| 103 | ! - rotation of geostrophic wind components to PALM frame of reference |
---|
| 104 | ! |
---|
| 105 | ! 3183 2018-07-27 14:25:55Z suehring |
---|
[3182] | 106 | ! Introduced new PALM grid stretching |
---|
| 107 | ! Removed unnecessary subroutine parameters |
---|
| 108 | ! Renamed kcur to k_intermediate |
---|
[2696] | 109 | ! |
---|
| 110 | ! |
---|
[3183] | 111 | ! 3182 2018-07-27 13:36:03Z suehring |
---|
[2696] | 112 | ! Initial revision |
---|
| 113 | ! |
---|
| 114 | ! |
---|
| 115 | ! |
---|
| 116 | ! Authors: |
---|
| 117 | ! -------- |
---|
[3557] | 118 | !> @author Eckhard Kadasch (Deutscher Wetterdienst, Offenbach) |
---|
[2696] | 119 | ! |
---|
| 120 | ! Description: |
---|
| 121 | ! ------------ |
---|
| 122 | !> The transform module provides INIFOR's low-level transformation and |
---|
| 123 | !> interpolation routines. The rotated-pole transformation routines phirot2phi, |
---|
| 124 | !> phi2phirot, rlarot2rla, rla2rlarot, uv2uvrot, and uvrot2uv are adapted from |
---|
| 125 | !> int2lm's utility routines. |
---|
| 126 | !------------------------------------------------------------------------------! |
---|
[3680] | 127 | #if defined ( __netcdf ) |
---|
[3618] | 128 | MODULE inifor_transform |
---|
[2696] | 129 | |
---|
[3618] | 130 | USE inifor_control |
---|
| 131 | USE inifor_defs, & |
---|
[4523] | 132 | ONLY: BETA, G, P_SL, PI, RD, T_SL, TO_DEGREES, TO_RADIANS, WATER_ID, & |
---|
| 133 | iwp, wp |
---|
[3618] | 134 | USE inifor_types |
---|
| 135 | USE inifor_util, & |
---|
[3779] | 136 | ONLY: get_basic_state, real_to_str, str |
---|
[2696] | 137 | |
---|
| 138 | IMPLICIT NONE |
---|
| 139 | |
---|
| 140 | CONTAINS |
---|
| 141 | |
---|
[3779] | 142 | |
---|
[3866] | 143 | SUBROUTINE interpolate_1d(in_arr, out_arr, outgrid) |
---|
| 144 | TYPE(grid_definition), INTENT(IN) :: outgrid |
---|
| 145 | REAL(wp), INTENT(IN) :: in_arr(:) |
---|
| 146 | REAL(wp), INTENT(OUT) :: out_arr(:) |
---|
[3779] | 147 | |
---|
[4523] | 148 | INTEGER(iwp) :: k, l, nz |
---|
[3779] | 149 | |
---|
[3866] | 150 | nz = UBOUND(out_arr, 1) |
---|
[3779] | 151 | |
---|
[3866] | 152 | DO k = nz, LBOUND(out_arr, 1), -1 |
---|
[3779] | 153 | |
---|
| 154 | ! |
---|
[3866] | 155 | !-- TODO: Remove IF clause and extrapolate based on a critical vertical |
---|
| 156 | !-- TODO: index marking the lower bound of COSMO-DE data coverage. |
---|
| 157 | !-- Check for negative interpolation weights indicating grid points |
---|
| 158 | !-- below COSMO-DE domain and extrapolate from the top in such cells. |
---|
| 159 | IF (outgrid%w(1,k,1) < -1.0_wp .AND. k < nz) THEN |
---|
| 160 | out_arr(k) = out_arr(k+1) |
---|
| 161 | ELSE |
---|
| 162 | out_arr(k) = 0.0_wp |
---|
| 163 | DO l = 1, 2 |
---|
| 164 | out_arr(k) = out_arr(k) + & |
---|
| 165 | outgrid%w(1,k,l) * in_arr(outgrid%kkk(1,k,l) ) |
---|
| 166 | ENDDO |
---|
| 167 | ENDIF |
---|
| 168 | ENDDO |
---|
[3779] | 169 | |
---|
[3866] | 170 | END SUBROUTINE interpolate_1d |
---|
[3779] | 171 | |
---|
| 172 | |
---|
[2696] | 173 | !------------------------------------------------------------------------------! |
---|
| 174 | ! Description: |
---|
| 175 | ! ------------ |
---|
| 176 | !> Interpolates linearly in the vertical direction in very column (i,j) of the |
---|
| 177 | !> output array outvar(i,j,:) using values of the source array invar. In cells |
---|
| 178 | !> that are outside the COSMO-DE domain, indicated by negative interpolation |
---|
| 179 | !> weights, extrapolate constantly from the cell above. |
---|
| 180 | !> |
---|
| 181 | !> Input parameters: |
---|
| 182 | !> ----------------- |
---|
| 183 | !> invar : Array of source data |
---|
| 184 | !> |
---|
[3866] | 185 | !> outgrid%kk : Array of vertical neighbour indices. kk(i,j,k,:) contain the |
---|
[2696] | 186 | !> indices of the two vertical neighbors of PALM-4U point (i,j,k) on the |
---|
| 187 | !> input grid corresponding to the source data invar. |
---|
| 188 | !> |
---|
[3866] | 189 | !> outgrid%w_verti : Array of weights for vertical linear interpolation |
---|
[2696] | 190 | !> corresponding to neighbour points indexed by kk. |
---|
| 191 | !> |
---|
| 192 | !> Output papameters: |
---|
| 193 | !> ------------------ |
---|
| 194 | !> outvar : Array of interpolated data |
---|
| 195 | !------------------------------------------------------------------------------! |
---|
[3866] | 196 | SUBROUTINE interpolate_1d_arr(in_arr, out_arr, outgrid) |
---|
| 197 | TYPE(grid_definition), INTENT(IN) :: outgrid |
---|
| 198 | REAL(wp), INTENT(IN) :: in_arr(0:,0:,0:) |
---|
| 199 | REAL(wp), INTENT(OUT) :: out_arr(0:,0:,:) |
---|
[2696] | 200 | |
---|
[4523] | 201 | INTEGER(iwp) :: i, j, k, l, nz |
---|
[2696] | 202 | |
---|
[3866] | 203 | nz = UBOUND(out_arr, 3) |
---|
[2696] | 204 | |
---|
[3866] | 205 | DO j = LBOUND(out_arr, 2), UBOUND(out_arr, 2) |
---|
| 206 | DO i = LBOUND(out_arr, 1), UBOUND(out_arr, 1) |
---|
| 207 | DO k = nz, LBOUND(out_arr, 3), -1 |
---|
[2696] | 208 | |
---|
[3557] | 209 | ! |
---|
[3866] | 210 | !-- TODO: Remove IF clause and extrapolate based on a critical vertical |
---|
| 211 | !-- TODO: index marking the lower bound of COSMO-DE data coverage. |
---|
| 212 | !-- Check for negative interpolation weights indicating grid points |
---|
| 213 | !-- below COSMO-DE domain and extrapolate from the top in such cells. |
---|
| 214 | IF (outgrid%w_verti(i,j,k,1) < -1.0_wp .AND. k < nz) THEN |
---|
| 215 | out_arr(i,j,k) = out_arr(i,j,k+1) |
---|
| 216 | ELSE |
---|
| 217 | out_arr(i,j,k) = 0.0_wp |
---|
| 218 | DO l = 1, 2 |
---|
| 219 | out_arr(i,j,k) = out_arr(i,j,k) + & |
---|
| 220 | outgrid%w_verti(i,j,k,l) * & |
---|
| 221 | in_arr(i,j,outgrid%kk(i,j,k, l) ) |
---|
| 222 | ENDDO |
---|
| 223 | ENDIF |
---|
| 224 | ENDDO |
---|
| 225 | ENDDO |
---|
| 226 | ENDDO |
---|
| 227 | END SUBROUTINE interpolate_1d_arr |
---|
[2696] | 228 | |
---|
| 229 | |
---|
| 230 | !------------------------------------------------------------------------------! |
---|
| 231 | ! Description: |
---|
| 232 | ! ------------ |
---|
| 233 | !> Interpolates bi-linearly in horizontal planes on every k level of the output |
---|
| 234 | !> array outvar(:,:,k) using values of the source array invar(:,:,:). The source |
---|
| 235 | !> (invar) and interpolation array (outvar) need to have matching dimensions. |
---|
| 236 | !> |
---|
| 237 | !> Input parameters: |
---|
| 238 | !> ----------------- |
---|
| 239 | !> invar : Array of source data |
---|
| 240 | !> |
---|
[3866] | 241 | !> outgrid%ii,%jj : Array of neighbour indices in x and y direction. |
---|
[2696] | 242 | !> ii(i,j,k,:), and jj(i,j,k,:) contain the four horizontal neighbour points |
---|
| 243 | !> of PALM-4U point (i,j,k) on the input grid corresponding to the source |
---|
| 244 | !> data invar. (The outgrid carries the relationship with the ingrid in the |
---|
[3779] | 245 | ! form of the interpolation weights.) |
---|
[2696] | 246 | !> |
---|
[3866] | 247 | !> outgrid%w_horiz: Array of weights for horizontal bi-linear interpolation |
---|
[2696] | 248 | !> corresponding to neighbour points indexed by ii and jj. |
---|
| 249 | !> |
---|
| 250 | !> Output papameters: |
---|
| 251 | !> ------------------ |
---|
| 252 | !> outvar : Array of interpolated data |
---|
| 253 | !------------------------------------------------------------------------------! |
---|
[3866] | 254 | SUBROUTINE interpolate_2d(invar, outvar, outgrid, ncvar) |
---|
[3557] | 255 | ! |
---|
[3866] | 256 | !-- I index 0-based for the indices of the outvar to be consistent with the |
---|
| 257 | !-- outgrid indices and interpolation weights. |
---|
| 258 | TYPE(grid_definition), INTENT(IN) :: outgrid |
---|
| 259 | REAL(wp), INTENT(IN) :: invar(0:,0:,0:) |
---|
| 260 | REAL(wp), INTENT(OUT) :: outvar(0:,0:,0:) |
---|
| 261 | TYPE(nc_var), INTENT(IN), OPTIONAL :: ncvar |
---|
[2696] | 262 | |
---|
[4523] | 263 | INTEGER(iwp) :: i, j, k, l |
---|
[2696] | 264 | |
---|
[3557] | 265 | ! |
---|
[3866] | 266 | !-- TODO: check if input dimensions are consistent, i.e. ranges are correct |
---|
| 267 | IF ( UBOUND(outvar, 3) .GT. UBOUND(invar, 3) ) THEN |
---|
| 268 | message = "Output array for '" // TRIM(ncvar%name) // "' has ' more levels (" // & |
---|
[4523] | 269 | TRIM(str(UBOUND(outvar, 3, kind=iwp))) // ") than input variable ("//& |
---|
| 270 | TRIM(str(UBOUND(invar, 3, kind=iwp))) // ")." |
---|
[3866] | 271 | CALL inifor_abort('interpolate_2d', message) |
---|
| 272 | ENDIF |
---|
[2696] | 273 | |
---|
[3866] | 274 | DO k = 0, UBOUND(outvar, 3) |
---|
| 275 | DO j = 0, UBOUND(outvar, 2) |
---|
| 276 | DO i = 0, UBOUND(outvar, 1) |
---|
| 277 | outvar(i,j,k) = 0.0_wp |
---|
| 278 | DO l = 1, 4 |
---|
| 279 | |
---|
| 280 | outvar(i,j,k) = outvar(i,j,k) + & |
---|
| 281 | outgrid%w_horiz(i,j,l) * invar( outgrid%ii(i,j,l), & |
---|
| 282 | outgrid%jj(i,j,l), & |
---|
| 283 | k ) |
---|
[3785] | 284 | ENDDO |
---|
[3866] | 285 | ENDDO |
---|
| 286 | ENDDO |
---|
| 287 | ENDDO |
---|
[2696] | 288 | |
---|
[3866] | 289 | END SUBROUTINE interpolate_2d |
---|
[2696] | 290 | |
---|
| 291 | |
---|
[3557] | 292 | !------------------------------------------------------------------------------! |
---|
| 293 | ! Description: |
---|
| 294 | ! ------------ |
---|
| 295 | !> Compute the horizontal average of the in_arr(:,:,:) and store it in |
---|
| 296 | !> out_arr(:) |
---|
| 297 | !------------------------------------------------------------------------------! |
---|
[3866] | 298 | SUBROUTINE average_2d(in_arr, out_arr, ii, jj) |
---|
[4523] | 299 | REAL(wp), INTENT(IN) :: in_arr(0:,0:,0:) |
---|
| 300 | REAL(wp), INTENT(OUT) :: out_arr(0:) |
---|
| 301 | INTEGER(iwp), INTENT(IN), DIMENSION(:) :: ii, jj |
---|
[2696] | 302 | |
---|
[4523] | 303 | INTEGER(iwp) :: i, j, k, l |
---|
| 304 | REAL(wp) :: ni |
---|
[2696] | 305 | |
---|
[3866] | 306 | IF (SIZE(ii) /= SIZE(jj)) THEN |
---|
| 307 | message = "Length of 'ii' and 'jj' index lists do not match." // & |
---|
[4523] | 308 | NEW_LINE(' ') // "ii has " // str(SIZE(ii, kind=iwp)) // " elements, " // & |
---|
| 309 | NEW_LINE(' ') // "jj has " // str(SIZE(jj, kind=iwp)) // "." |
---|
[3866] | 310 | CALL inifor_abort('average_2d', message) |
---|
| 311 | ENDIF |
---|
[3395] | 312 | |
---|
[3866] | 313 | IF (SIZE(ii) == 0) THEN |
---|
| 314 | message = "No columns to average over; " // & |
---|
| 315 | "size of index lists 'ii' and 'jj' is zero." |
---|
| 316 | CALL inifor_abort('average_2d', message) |
---|
| 317 | ENDIF |
---|
[3678] | 318 | |
---|
[3866] | 319 | DO k = 0, UBOUND(out_arr, 1) |
---|
[2696] | 320 | |
---|
[3866] | 321 | out_arr(k) = 0.0_wp |
---|
| 322 | DO l = 1, UBOUND(ii, 1) |
---|
| 323 | i = ii(l) |
---|
| 324 | j = jj(l) |
---|
| 325 | out_arr(k) = out_arr(k) + in_arr(i, j, k) |
---|
[3785] | 326 | ENDDO |
---|
[3395] | 327 | |
---|
[3866] | 328 | ENDDO |
---|
[2696] | 329 | |
---|
[3866] | 330 | ni = 1.0_wp / SIZE(ii) |
---|
| 331 | out_arr(:) = out_arr(:) * ni |
---|
[2696] | 332 | |
---|
[3866] | 333 | END SUBROUTINE average_2d |
---|
[2696] | 334 | |
---|
[3866] | 335 | |
---|
[3557] | 336 | !------------------------------------------------------------------------------! |
---|
| 337 | ! Description: |
---|
| 338 | ! ------------ |
---|
| 339 | !> Three-dimensional interpolation driver. Interpolates from the source_array to |
---|
| 340 | !> the given palm_grid. |
---|
| 341 | !> |
---|
| 342 | !> The routine separates horizontal and vertical |
---|
| 343 | !> interpolation. In the horizontal interpolation step, the source_array data is |
---|
| 344 | !> interpolated along COSMO grid levels onto the intermediate grid (vertically |
---|
| 345 | !> as coarse as COSMO, horizontally as fine as PALM). |
---|
| 346 | !------------------------------------------------------------------------------! |
---|
[3866] | 347 | SUBROUTINE interpolate_3d(source_array, palm_array, palm_intermediate, palm_grid) |
---|
| 348 | TYPE(grid_definition), INTENT(IN) :: palm_intermediate, palm_grid |
---|
| 349 | REAL(wp), DIMENSION(:,:,:), INTENT(IN) :: source_array |
---|
| 350 | REAL(wp), DIMENSION(:,:,:), INTENT(OUT) :: palm_array |
---|
| 351 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: intermediate_array |
---|
[4523] | 352 | INTEGER(iwp) :: nx, ny, nlev |
---|
[2696] | 353 | |
---|
[3866] | 354 | nx = palm_intermediate%nx |
---|
| 355 | ny = palm_intermediate%ny |
---|
| 356 | nlev = palm_intermediate%nz |
---|
[2696] | 357 | |
---|
[3557] | 358 | ! |
---|
[3866] | 359 | !-- Interpolate from COSMO to intermediate grid. Allocating with one |
---|
| 360 | !-- less point in the vertical, since scalars like T have 50 instead of 51 |
---|
| 361 | !-- points in COSMO. |
---|
| 362 | ALLOCATE(intermediate_array(0:nx, 0:ny, 0:nlev-1)) ! |
---|
[2696] | 363 | |
---|
[3866] | 364 | CALL interpolate_2d(source_array, intermediate_array, palm_intermediate) |
---|
[2696] | 365 | |
---|
[3557] | 366 | ! |
---|
[3866] | 367 | !-- Interpolate from intermediate grid to palm_grid grid, includes |
---|
| 368 | !-- extrapolation for cells below COSMO domain. |
---|
| 369 | CALL interpolate_1d_arr(intermediate_array, palm_array, palm_grid) |
---|
[2696] | 370 | |
---|
[3866] | 371 | DEALLOCATE(intermediate_array) |
---|
[2696] | 372 | |
---|
[3866] | 373 | END SUBROUTINE interpolate_3d |
---|
[2696] | 374 | |
---|
| 375 | |
---|
[3557] | 376 | !------------------------------------------------------------------------------! |
---|
| 377 | ! Description: |
---|
| 378 | ! ------------ |
---|
| 379 | !> Average data horizontally from the source_array over the region given by the |
---|
| 380 | !> averaging grid 'avg_grid' and store the result in 'profile_array'. |
---|
| 381 | !------------------------------------------------------------------------------! |
---|
[3866] | 382 | SUBROUTINE interp_average_profile(source_array, profile_array, avg_grid) |
---|
| 383 | TYPE(grid_definition), INTENT(IN) :: avg_grid |
---|
[4714] | 384 | REAL(wp), DIMENSION(:,:,:), INTENT(IN) :: source_array(0:,0:,:) |
---|
[3866] | 385 | REAL(wp), DIMENSION(:), INTENT(OUT) :: profile_array |
---|
[2696] | 386 | |
---|
[4523] | 387 | INTEGER(iwp) :: i_source, j_source, k_profile, k_source, l, m |
---|
[2696] | 388 | |
---|
[3866] | 389 | REAL :: ni_columns |
---|
[2696] | 390 | |
---|
[3866] | 391 | profile_array(:) = 0.0_wp |
---|
[2696] | 392 | |
---|
[3866] | 393 | DO l = 1, avg_grid%n_columns |
---|
| 394 | i_source = avg_grid%iii(l) |
---|
| 395 | j_source = avg_grid%jjj(l) |
---|
[2696] | 396 | |
---|
[3557] | 397 | ! |
---|
[3866] | 398 | !-- Loop over PALM levels |
---|
| 399 | DO k_profile = avg_grid%k_min, UBOUND(profile_array, 1) |
---|
[3395] | 400 | |
---|
[3557] | 401 | ! |
---|
[3866] | 402 | !-- Loop over vertical interpolation neighbours |
---|
| 403 | DO m = 1, 2 |
---|
[3395] | 404 | |
---|
[3866] | 405 | k_source = avg_grid%kkk(l, k_profile, m) |
---|
[3395] | 406 | |
---|
[3866] | 407 | profile_array(k_profile) = profile_array(k_profile) & |
---|
| 408 | + avg_grid%w(l, k_profile, m) & |
---|
| 409 | * source_array(i_source, j_source, k_source) |
---|
[3557] | 410 | ! |
---|
[3866] | 411 | !-- Loop over vertical interpolation neighbours m |
---|
[3785] | 412 | ENDDO |
---|
[3395] | 413 | |
---|
[3557] | 414 | ! |
---|
[3866] | 415 | !-- Loop over PALM levels k_profile |
---|
[3785] | 416 | ENDDO |
---|
[3395] | 417 | |
---|
[3866] | 418 | ! |
---|
| 419 | !-- Loop over horizontal neighbours l |
---|
| 420 | ENDDO |
---|
[3395] | 421 | |
---|
[3866] | 422 | ni_columns = 1.0_wp / avg_grid%n_columns |
---|
| 423 | profile_array(:) = profile_array(:) * ni_columns |
---|
| 424 | |
---|
[3557] | 425 | ! |
---|
[3866] | 426 | !-- Constant extrapolation to the bottom |
---|
| 427 | profile_array(1:avg_grid%k_min-1) = profile_array(avg_grid%k_min) |
---|
[3395] | 428 | |
---|
[3866] | 429 | END SUBROUTINE interp_average_profile |
---|
[3779] | 430 | |
---|
| 431 | |
---|
| 432 | !------------------------------------------------------------------------------! |
---|
| 433 | ! Description: |
---|
| 434 | ! ------------ |
---|
| 435 | !> Average data horizontally from the source_array over the region given by the |
---|
| 436 | !> averaging grid 'avg_grid' and store the result in 'profile_array'. |
---|
| 437 | !------------------------------------------------------------------------------! |
---|
[3866] | 438 | SUBROUTINE average_profile( source_array, profile_array, avg_grid ) |
---|
[3779] | 439 | |
---|
[3866] | 440 | TYPE(grid_definition), INTENT(IN) :: avg_grid |
---|
[4714] | 441 | REAL(wp), DIMENSION(:,:,:), INTENT(IN) :: source_array(0:,0:,:) |
---|
[3866] | 442 | REAL(wp), DIMENSION(:), INTENT(OUT) :: profile_array |
---|
[3779] | 443 | |
---|
[4523] | 444 | INTEGER(iwp) :: i_source, j_source, l, nz, nlev |
---|
[3779] | 445 | |
---|
[3866] | 446 | REAL(wp) :: ni_columns |
---|
[3779] | 447 | |
---|
[3866] | 448 | nlev = SIZE( source_array, 3 ) |
---|
| 449 | nz = SIZE( profile_array, 1 ) |
---|
[3779] | 450 | |
---|
[3866] | 451 | IF ( nlev /= nz ) THEN |
---|
| 452 | message = "Lengths of input and output profiles do not match: " // & |
---|
| 453 | "cosmo_pressure(" // TRIM( str( nlev ) ) // & |
---|
| 454 | "), profile_array(" // TRIM( str( nz ) ) // ")." |
---|
[4675] | 455 | CALL inifor_abort( 'average_profile', message ) |
---|
[3866] | 456 | ENDIF |
---|
| 457 | |
---|
| 458 | profile_array(:) = 0.0_wp |
---|
[3779] | 459 | |
---|
[3866] | 460 | DO l = 1, avg_grid%n_columns |
---|
[3779] | 461 | |
---|
[3866] | 462 | i_source = avg_grid%iii(l) |
---|
| 463 | j_source = avg_grid%jjj(l) |
---|
[3779] | 464 | |
---|
[3866] | 465 | profile_array(:) = profile_array(:) & |
---|
| 466 | + source_array(i_source, j_source, :) |
---|
[3779] | 467 | |
---|
[3866] | 468 | ENDDO |
---|
[3779] | 469 | |
---|
[3866] | 470 | ni_columns = 1.0_wp / avg_grid%n_columns |
---|
| 471 | profile_array(:) = profile_array(:) * ni_columns |
---|
[3779] | 472 | |
---|
[3866] | 473 | END SUBROUTINE average_profile |
---|
[2696] | 474 | |
---|
| 475 | |
---|
[3557] | 476 | !------------------------------------------------------------------------------! |
---|
| 477 | ! Description: |
---|
| 478 | ! ------------ |
---|
[3779] | 479 | !> This is a sister routine to average_profile() and differes from it in that |
---|
| 480 | !> it removes the COSMO basic state pressure from the input array before |
---|
| 481 | !> averaging. |
---|
| 482 | !------------------------------------------------------------------------------! |
---|
[3866] | 483 | SUBROUTINE average_pressure_perturbation( cosmo_pressure, profile_array, & |
---|
| 484 | cosmo_grid, avg_grid ) |
---|
[3779] | 485 | |
---|
[3866] | 486 | TYPE(grid_definition), INTENT(IN) :: cosmo_grid, avg_grid |
---|
[4714] | 487 | REAL(wp), DIMENSION(:,:,:), INTENT(IN) :: cosmo_pressure(0:,0:,:) |
---|
[3866] | 488 | REAL(wp), DIMENSION(:), INTENT(OUT) :: profile_array |
---|
[3779] | 489 | |
---|
[4523] | 490 | INTEGER(iwp) :: i_source, j_source, l, nz, nlev |
---|
[3779] | 491 | |
---|
[3866] | 492 | REAL(wp) :: ni_columns |
---|
| 493 | REAL(wp), DIMENSION(:), ALLOCATABLE :: basic_state_pressure |
---|
[3779] | 494 | |
---|
[3866] | 495 | nlev = SIZE( cosmo_pressure, 3 ) |
---|
| 496 | nz = SIZE( profile_array, 1 ) |
---|
[3779] | 497 | |
---|
[3866] | 498 | IF ( nlev /= nz ) THEN |
---|
| 499 | message = "Lengths of input and output profiles do not match: " // & |
---|
| 500 | "cosmo_pressure(" // TRIM( str( nlev ) ) // & |
---|
| 501 | "), profile_array(" // TRIM( str( nz ) ) // ")." |
---|
| 502 | CALL inifor_abort('average_pressure_perturbation', message) |
---|
| 503 | ENDIF |
---|
[3779] | 504 | |
---|
[3866] | 505 | ALLOCATE( basic_state_pressure(nz) ) |
---|
| 506 | profile_array(:) = 0.0_wp |
---|
[3779] | 507 | |
---|
[3866] | 508 | DO l = 1, avg_grid%n_columns |
---|
| 509 | i_source = avg_grid%iii(l) |
---|
| 510 | j_source = avg_grid%jjj(l) |
---|
[3779] | 511 | |
---|
| 512 | ! |
---|
[3866] | 513 | !-- Compute pressure perturbation by removing COSMO basic state pressure |
---|
| 514 | CALL get_basic_state( cosmo_grid%hfl(i_source,j_source,:), BETA, & |
---|
| 515 | P_SL, T_SL, RD, G, basic_state_pressure ) |
---|
[3779] | 516 | |
---|
[3866] | 517 | profile_array(:) = profile_array(:) & |
---|
| 518 | + cosmo_pressure(i_source, j_source, :) & |
---|
| 519 | - basic_state_pressure(:) |
---|
[3779] | 520 | |
---|
| 521 | ! |
---|
[3866] | 522 | !-- Loop over horizontal neighbours l |
---|
| 523 | ENDDO |
---|
[3779] | 524 | |
---|
[3866] | 525 | DEALLOCATE( basic_state_pressure ) |
---|
[3779] | 526 | |
---|
[3866] | 527 | ni_columns = 1.0_wp / avg_grid%n_columns |
---|
| 528 | profile_array(:) = profile_array(:) * ni_columns |
---|
[3779] | 529 | |
---|
[3866] | 530 | END SUBROUTINE average_pressure_perturbation |
---|
[3779] | 531 | |
---|
| 532 | |
---|
| 533 | !------------------------------------------------------------------------------! |
---|
| 534 | ! Description: |
---|
| 535 | ! ------------ |
---|
[4523] | 536 | !> Computes average soil values in COSMO-DE water cells from neighbouring |
---|
| 537 | !> non-water cells. This is done as a preprocessing step for the COSMO-DE |
---|
| 538 | !> soil input arrays, which contain unphysical values for water cells. |
---|
| 539 | !> |
---|
| 540 | !> This routine computes the average of up to all nine neighbouring cells |
---|
| 541 | !> or keeps the original value, if not at least one non-water neightbour |
---|
| 542 | !> is available. |
---|
| 543 | !> |
---|
| 544 | !> By repeatedly applying this step, soil data can be extrapolated into |
---|
| 545 | !> 'water' regions occupying multiple cells, one cell per iteration. |
---|
| 546 | !> |
---|
| 547 | !> Input parameters: |
---|
| 548 | !> ----------------- |
---|
| 549 | !> soiltyp : 2d map of COSMO-DE soil types |
---|
| 550 | !> nz : number of layers in the COSMO-DE soil |
---|
| 551 | !> niter : number iterations |
---|
| 552 | !> |
---|
| 553 | !> Output parameters: |
---|
| 554 | !> ------------------ |
---|
| 555 | !> array : the soil array (i.e. water content or temperature) |
---|
[3557] | 556 | !------------------------------------------------------------------------------! |
---|
[4523] | 557 | SUBROUTINE fill_water_cells(soiltyp, array, nz, niter) |
---|
| 558 | INTEGER(iwp), DIMENSION(:,:,:), INTENT(IN) :: soiltyp |
---|
| 559 | REAL(wp), DIMENSION(:,:,:), INTENT(INOUT) :: array |
---|
| 560 | INTEGER(iwp), INTENT(IN) :: nz, niter |
---|
[2696] | 561 | |
---|
[4523] | 562 | REAL(wp), DIMENSION(nz) :: column |
---|
| 563 | INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: old_soiltyp, new_soiltyp |
---|
| 564 | INTEGER(iwp) :: l, i, j, nx, ny, n_cells, ii, jj, iter |
---|
| 565 | INTEGER(iwp), DIMENSION(8) :: di, dj |
---|
[3395] | 566 | |
---|
[4523] | 567 | nx = SIZE(array, 1) |
---|
| 568 | ny = SIZE(array, 2) |
---|
| 569 | di = (/ -1, -1, -1, 0, 0, 1, 1, 1 /) |
---|
| 570 | dj = (/ -1, 0, 1, -1, 1, -1, 0, 1 /) |
---|
[3395] | 571 | |
---|
[4523] | 572 | ALLOCATE(old_soiltyp(SIZE(soiltyp,1), & |
---|
| 573 | SIZE(soiltyp,2) )) |
---|
[3395] | 574 | |
---|
[4523] | 575 | ALLOCATE(new_soiltyp(SIZE(soiltyp,1), & |
---|
| 576 | SIZE(soiltyp,2) )) |
---|
[3395] | 577 | |
---|
[4523] | 578 | old_soiltyp(:,:) = soiltyp(:,:,1) |
---|
| 579 | new_soiltyp(:,:) = soiltyp(:,:,1) |
---|
[3395] | 580 | |
---|
[4523] | 581 | DO iter = 1, niter |
---|
[3395] | 582 | |
---|
[4523] | 583 | DO j = 1, ny |
---|
| 584 | DO i = 1, nx |
---|
| 585 | |
---|
| 586 | IF (old_soiltyp(i,j) == WATER_ID) THEN |
---|
[3395] | 587 | |
---|
[4523] | 588 | n_cells = 0 |
---|
| 589 | column(:) = 0.0_wp |
---|
| 590 | DO l = 1, SIZE(di) |
---|
[3395] | 591 | |
---|
[4523] | 592 | ii = MIN(nx, MAX(1_iwp, i + di(l))) |
---|
| 593 | jj = MIN(ny, MAX(1_iwp, j + dj(l))) |
---|
| 594 | |
---|
| 595 | IF (old_soiltyp(ii,jj) .NE. WATER_ID) THEN |
---|
| 596 | n_cells = n_cells + 1 |
---|
| 597 | column(:) = column(:) + array(ii,jj,:) |
---|
| 598 | ENDIF |
---|
| 599 | |
---|
| 600 | ENDDO |
---|
| 601 | |
---|
| 602 | ! |
---|
| 603 | !-- Overwrite if at least one non-water neighbour cell is available |
---|
| 604 | IF (n_cells > 0) THEN |
---|
| 605 | array(i,j,:) = column(:) / n_cells |
---|
| 606 | new_soiltyp(i,j) = 0 |
---|
| 607 | ENDIF |
---|
| 608 | |
---|
| 609 | ENDIF |
---|
| 610 | |
---|
| 611 | ENDDO |
---|
| 612 | ENDDO |
---|
| 613 | |
---|
| 614 | old_soiltyp(:,:) = new_soiltyp(:,:) |
---|
| 615 | |
---|
[3866] | 616 | ENDDO |
---|
[3395] | 617 | |
---|
[4523] | 618 | DEALLOCATE(old_soiltyp, new_soiltyp) |
---|
[3395] | 619 | |
---|
[4523] | 620 | END SUBROUTINE fill_water_cells |
---|
[3395] | 621 | |
---|
[4523] | 622 | |
---|
[3395] | 623 | !------------------------------------------------------------------------------! |
---|
| 624 | ! Description: |
---|
| 625 | ! ------------ |
---|
| 626 | !> Takes the averaged pressure profile <p> and sets the lowest entry to the |
---|
| 627 | !> extrapolated pressure at the surface. |
---|
| 628 | !------------------------------------------------------------------------------! |
---|
[3866] | 629 | SUBROUTINE get_surface_pressure(p, rho, avg_grid) |
---|
| 630 | REAL(wp), DIMENSION(:), INTENT(IN) :: rho |
---|
| 631 | REAL(wp), DIMENSION(:), INTENT(INOUT) :: p |
---|
| 632 | TYPE(grid_definition), INTENT(IN) :: avg_grid |
---|
[3395] | 633 | |
---|
[4523] | 634 | REAL(wp) :: drhodz, dz, zk, rhok |
---|
| 635 | INTEGER(iwp) :: k_min |
---|
[3395] | 636 | |
---|
[3866] | 637 | k_min = avg_grid%k_min |
---|
| 638 | zk = avg_grid%z(k_min) |
---|
| 639 | rhok = rho(k_min) |
---|
| 640 | dz = avg_grid%z(k_min + 1) - avg_grid%z(k_min) |
---|
[4523] | 641 | drhodz = ( rho(k_min + 1) - rho(k_min) ) / dz |
---|
[3395] | 642 | |
---|
[4523] | 643 | p(1) = linear_density_pressure( p(k_min), zk, rhok, drhodz, & |
---|
| 644 | z = 0.0_wp, g=G ) |
---|
[3395] | 645 | |
---|
[3866] | 646 | END SUBROUTINE get_surface_pressure |
---|
[3395] | 647 | |
---|
| 648 | |
---|
[4523] | 649 | FUNCTION linear_density_pressure(pk, zk, rhok, drhodz, z, g) RESULT(p) |
---|
[3395] | 650 | |
---|
[3866] | 651 | REAL(wp), INTENT(IN) :: pk, zk, rhok, drhodz, g, z |
---|
| 652 | REAL(wp) :: p |
---|
[3395] | 653 | |
---|
[4523] | 654 | p = pk + ( zk - z ) * g * ( rhok - 0.5_wp * drhodz * (zk - z) ) |
---|
[3395] | 655 | |
---|
[4523] | 656 | END FUNCTION linear_density_pressure |
---|
[3395] | 657 | |
---|
[2696] | 658 | !-----------------------------------------------------------------------------! |
---|
| 659 | ! Description: |
---|
| 660 | ! ----------- |
---|
[3395] | 661 | !> This routine computes profiles of the two geostrophic wind components ug and |
---|
| 662 | !> vg. |
---|
| 663 | !-----------------------------------------------------------------------------! |
---|
[3866] | 664 | SUBROUTINE geostrophic_winds(p_north, p_south, p_east, p_west, rho, f3, & |
---|
| 665 | Lx, Ly, phi_n, lam_n, phi_g, lam_g, ug, vg) |
---|
[3395] | 666 | |
---|
[3866] | 667 | REAL(wp), DIMENSION(:), INTENT(IN) :: p_north, p_south, p_east, p_west, & |
---|
[3395] | 668 | rho |
---|
[3866] | 669 | REAL(wp), INTENT(IN) :: f3, Lx, Ly, phi_n, lam_n, phi_g, lam_g |
---|
| 670 | REAL(wp), DIMENSION(:), INTENT(OUT) :: ug, vg |
---|
| 671 | REAL(wp) :: facx, facy |
---|
[3395] | 672 | |
---|
[3866] | 673 | facx = 1.0_wp / (Lx * f3) |
---|
| 674 | facy = 1.0_wp / (Ly * f3) |
---|
[3395] | 675 | ug(:) = - facy / rho(:) * (p_north(:) - p_south(:)) |
---|
| 676 | vg(:) = facx / rho(:) * (p_east(:) - p_west(:)) |
---|
| 677 | |
---|
| 678 | CALL rotate_vector_field( & |
---|
| 679 | ug, vg, angle = meridian_convergence_rotated(phi_n, lam_n, phi_g, lam_g)& |
---|
| 680 | ) |
---|
| 681 | |
---|
[3866] | 682 | END SUBROUTINE geostrophic_winds |
---|
[3395] | 683 | |
---|
| 684 | |
---|
| 685 | !-----------------------------------------------------------------------------! |
---|
| 686 | ! Description: |
---|
| 687 | ! ----------- |
---|
[2696] | 688 | !> This routine computes the inverse Plate Carree projection, i.e. in projects |
---|
| 689 | !> Cartesian coordinates (x,y) onto a sphere. It returns the latitude and |
---|
| 690 | !> lngitude of a geographical system centered at x0 and y0. |
---|
| 691 | !-----------------------------------------------------------------------------! |
---|
[3866] | 692 | SUBROUTINE inv_plate_carree(x, y, x0, y0, r, lat, lon) |
---|
| 693 | REAL(wp), INTENT(IN) :: x(:), y(:), x0, y0, r |
---|
| 694 | REAL(wp), INTENT(OUT) :: lat(:), lon(:) |
---|
| 695 | |
---|
| 696 | REAL(wp) :: ri |
---|
[2696] | 697 | |
---|
[3557] | 698 | ! |
---|
[3866] | 699 | !-- TODO check dimensions of lat/lon and y/x match |
---|
[2696] | 700 | |
---|
[3866] | 701 | ri = 1.0_wp / r |
---|
| 702 | |
---|
| 703 | lat(:) = (y(:) - y0) * ri |
---|
| 704 | lon(:) = (x(:) - x0) * ri |
---|
| 705 | END SUBROUTINE |
---|
[2696] | 706 | |
---|
| 707 | |
---|
| 708 | !-----------------------------------------------------------------------------! |
---|
| 709 | ! Description: |
---|
| 710 | ! ------------ |
---|
| 711 | !> Computes the reverse Plate-Carree projection of a x or y position on a |
---|
| 712 | !> Cartesian grid. |
---|
| 713 | !> |
---|
| 714 | !> Input parameters: |
---|
| 715 | !> ----------------- |
---|
| 716 | !> xy : x or y coordinate of the Cartasian grid point [m]. |
---|
| 717 | !> |
---|
| 718 | !> xy0 : x or y coordinate that coincides with the origin of the underlying |
---|
| 719 | !> sperical system (crossing point of the equator and prime meridian) [m]. |
---|
| 720 | !> |
---|
| 721 | !> r : Radius of the of the underlying sphere, e.g. EARTH_RADIUS [m]. |
---|
| 722 | !> |
---|
| 723 | !> Returns: |
---|
| 724 | !> -------- |
---|
| 725 | !> project : Longitude (in case xy = x) or latitude (xy = y) of the given input |
---|
| 726 | !> coordinate xy. |
---|
| 727 | !------------------------------------------------------------------------------! |
---|
[3866] | 728 | ELEMENTAL REAL(wp) FUNCTION project(xy, xy0, r) |
---|
| 729 | REAL(wp), INTENT(IN) :: xy, xy0, r |
---|
| 730 | REAL(wp) :: ri |
---|
[2696] | 731 | |
---|
[3557] | 732 | ! |
---|
[3866] | 733 | !-- If this elemental function is called with a large array as xy, it is |
---|
| 734 | !-- computationally more efficient to precompute the inverse radius and |
---|
| 735 | !-- then muliply. |
---|
| 736 | ri = 1.0_wp / r |
---|
[2696] | 737 | |
---|
[3866] | 738 | project = (xy - xy0) * ri |
---|
[2696] | 739 | |
---|
[3866] | 740 | END FUNCTION project |
---|
[2696] | 741 | |
---|
| 742 | |
---|
[3557] | 743 | !------------------------------------------------------------------------------! |
---|
| 744 | ! Description: |
---|
| 745 | ! ------------ |
---|
| 746 | !> For a rotated-pole system with the origin at geographical latitude 'phi_c', |
---|
| 747 | !> compute the geographical latitude of its rotated north pole. |
---|
| 748 | !------------------------------------------------------------------------------! |
---|
[3866] | 749 | REAL(wp) FUNCTION phic_to_phin(phi_c) |
---|
| 750 | REAL(wp), INTENT(IN) :: phi_c |
---|
[2696] | 751 | |
---|
[3866] | 752 | phic_to_phin = 0.5_wp * PI - ABS(phi_c) |
---|
[2696] | 753 | |
---|
[3866] | 754 | END FUNCTION phic_to_phin |
---|
[2696] | 755 | |
---|
| 756 | |
---|
[3557] | 757 | !------------------------------------------------------------------------------! |
---|
| 758 | ! Description: |
---|
| 759 | ! ------------ |
---|
| 760 | !> For a rotated-pole system with the origin at geographical latitude 'phi_c' |
---|
| 761 | !> and longitude 'lam_c', compute the geographical longitude of its rotated |
---|
| 762 | !> north pole. |
---|
| 763 | !------------------------------------------------------------------------------! |
---|
[3866] | 764 | REAL(wp) FUNCTION lamc_to_lamn(phi_c, lam_c) |
---|
| 765 | REAL(wp), INTENT(IN) :: phi_c, lam_c |
---|
| 766 | |
---|
| 767 | lamc_to_lamn = lam_c |
---|
| 768 | IF (phi_c > 0.0_wp) THEN |
---|
| 769 | lamc_to_lamn = lam_c - SIGN(PI, lam_c) |
---|
| 770 | ENDIF |
---|
[2696] | 771 | |
---|
[3866] | 772 | END FUNCTION lamc_to_lamn |
---|
[2696] | 773 | |
---|
| 774 | |
---|
[3557] | 775 | !------------------------------------------------------------------------------! |
---|
| 776 | ! Description: |
---|
| 777 | ! ------------ |
---|
| 778 | !> Set gamma according to whether PALM domain is in the northern or southern |
---|
| 779 | !> hemisphere of the COSMO rotated-pole system. Gamma assumes either the |
---|
| 780 | !> value 0 or PI and is needed to work around around a bug in the |
---|
| 781 | !> rotated-pole coordinate transformations. |
---|
| 782 | !------------------------------------------------------------------------------! |
---|
[3866] | 783 | REAL(wp) FUNCTION gamma_from_hemisphere(phi_cg, phi_ref) |
---|
| 784 | REAL(wp), INTENT(IN) :: phi_cg |
---|
| 785 | REAL(wp), INTENT(IN) :: phi_ref |
---|
[3557] | 786 | |
---|
[3866] | 787 | LOGICAL :: palm_origin_is_south_of_cosmo_origin |
---|
| 788 | |
---|
| 789 | palm_origin_is_south_of_cosmo_origin = (phi_cg < phi_ref) |
---|
[2696] | 790 | |
---|
[3866] | 791 | IF (palm_origin_is_south_of_cosmo_origin) THEN |
---|
| 792 | gamma_from_hemisphere = PI |
---|
| 793 | ELSE |
---|
| 794 | gamma_from_hemisphere = 0.0_wp |
---|
| 795 | ENDIF |
---|
| 796 | END FUNCTION gamma_from_hemisphere |
---|
[2696] | 797 | |
---|
| 798 | |
---|
| 799 | !------------------------------------------------------------------------------! |
---|
| 800 | ! Description: |
---|
| 801 | ! ------------ |
---|
| 802 | !> Computes the geographical coordinates corresponding to the given rotated-pole |
---|
| 803 | !> coordinates. |
---|
| 804 | !> |
---|
| 805 | !> In INIFOR, this routine is used to convert coordinates between two |
---|
| 806 | !> rotated-pole systems: COSMO-DE's rotated-pole system, and one centred at the |
---|
| 807 | !> PALM-4U domain centre. In this case, the PALM-4U system is thought of as the |
---|
| 808 | !> rotated-pole system and the routine is used to rotate back to COSMO-DE's |
---|
| 809 | !> system which is thought of as the geographical one. |
---|
| 810 | !> |
---|
| 811 | !> Input parameters: |
---|
| 812 | !> ----------------- |
---|
| 813 | !> phir(:), lamr(: ): latitudes and longitudes of the rotated-pole grid |
---|
| 814 | !> |
---|
| 815 | !> phip, lamp: latitude and longitude of the rotated north pole |
---|
| 816 | !> |
---|
| 817 | !> gam: "angle between the north poles. If [gam] is not present, the other |
---|
| 818 | !> system is the real geographical system." (original phiro2rot |
---|
| 819 | !> description) |
---|
| 820 | !> |
---|
| 821 | !> Output parameters: |
---|
| 822 | !> ------------------ |
---|
| 823 | !> phi(:,:), lam(:,:): geographical latitudes and logitudes |
---|
| 824 | !------------------------------------------------------------------------------! |
---|
[3866] | 825 | SUBROUTINE rotate_to_cosmo(phir, lamr, phip, lamp, phi, lam, gam) |
---|
| 826 | REAL(wp), INTENT(IN) :: phir(0:), lamr(0:), phip, lamp, gam |
---|
| 827 | REAL(wp), INTENT(OUT) :: phi(0:,0:), lam(0:,0:) |
---|
[2696] | 828 | |
---|
[4523] | 829 | INTEGER(iwp) :: i, j |
---|
[3866] | 830 | |
---|
| 831 | IF ( SIZE(phi, 1) .NE. SIZE(lam, 1) .OR. & |
---|
| 832 | SIZE(phi, 2) .NE. SIZE(lam, 2) ) THEN |
---|
| 833 | PRINT *, "inifor: rotate_to_cosmo: Dimensions of phi and lambda do not match. Dimensions are:" |
---|
| 834 | PRINT *, "inifor: rotate_to_cosmo: phi: ", SIZE(phi, 1), SIZE(phi, 2) |
---|
| 835 | PRINT *, "inifor: rotate_to_cosmo: lam: ", SIZE(lam, 1), SIZE(lam, 2) |
---|
| 836 | STOP |
---|
| 837 | ENDIF |
---|
[2696] | 838 | |
---|
[3866] | 839 | IF ( SIZE(phir) .NE. SIZE(phi, 2) .OR. & |
---|
| 840 | SIZE(lamr) .NE. SIZE(phi, 1) ) THEN |
---|
| 841 | PRINT *, "inifor: rotate_to_cosmo: Dimensions of phir and lamr do not match. Dimensions are:" |
---|
| 842 | PRINT *, "inifor: rotate_to_cosmo: phir: ", SIZE(phir), SIZE(phi, 2) |
---|
| 843 | PRINT *, "inifor: rotate_to_cosmo: lamr: ", SIZE(lamr), SIZE(phi, 1) |
---|
| 844 | STOP |
---|
| 845 | ENDIF |
---|
| 846 | |
---|
| 847 | DO j = 0, UBOUND(phir, 1) |
---|
| 848 | DO i = 0, UBOUND(lamr, 1) |
---|
[2696] | 849 | |
---|
[3866] | 850 | phi(i,j) = phirot2phi(phir(j) * TO_DEGREES, & |
---|
| 851 | lamr(i) * TO_DEGREES, & |
---|
| 852 | phip * TO_DEGREES, & |
---|
| 853 | gam * TO_DEGREES) * TO_RADIANS |
---|
[2696] | 854 | |
---|
[3866] | 855 | lam(i,j) = rlarot2rla(phir(j) * TO_DEGREES, & |
---|
| 856 | lamr(i) * TO_DEGREES, & |
---|
| 857 | phip * TO_DEGREES, & |
---|
| 858 | lamp * TO_DEGREES, & |
---|
| 859 | gam * TO_DEGREES) * TO_RADIANS |
---|
[2696] | 860 | |
---|
[3785] | 861 | ENDDO |
---|
[3866] | 862 | ENDDO |
---|
[2696] | 863 | |
---|
[3866] | 864 | END SUBROUTINE rotate_to_cosmo |
---|
[3182] | 865 | |
---|
[2696] | 866 | |
---|
[3557] | 867 | !------------------------------------------------------------------------------! |
---|
| 868 | ! Description: |
---|
| 869 | ! ------------ |
---|
| 870 | !> Rotate the given vector field (x(:), y(:)) by the given 'angle'. |
---|
| 871 | !------------------------------------------------------------------------------! |
---|
[3866] | 872 | SUBROUTINE rotate_vector_field(x, y, angle) |
---|
| 873 | REAL(wp), DIMENSION(:), INTENT(INOUT) :: x, y !< x and y coodrinate in arbitrary units |
---|
| 874 | REAL(wp), INTENT(IN) :: angle !< rotation angle [deg] |
---|
[2696] | 875 | |
---|
[4523] | 876 | INTEGER(iwp) :: i |
---|
| 877 | REAL(wp) :: sine, cosine, v_rot(2), rotation(2,2) |
---|
[3395] | 878 | |
---|
[3866] | 879 | sine = SIN(angle * TO_RADIANS) |
---|
| 880 | cosine = COS(angle * TO_RADIANS) |
---|
[3557] | 881 | ! |
---|
[3866] | 882 | !-- RESAHPE() fills columns first, so the rotation matrix becomes |
---|
| 883 | !-- |
---|
| 884 | !-- rotation = [ cosine -sine ] |
---|
| 885 | !-- [ sine cosine ] |
---|
| 886 | rotation = RESHAPE( (/cosine, sine, -sine, cosine/), (/2, 2/) ) |
---|
[3395] | 887 | |
---|
[3866] | 888 | DO i = LBOUND(x, 1), UBOUND(x, 1) |
---|
[3395] | 889 | |
---|
[3866] | 890 | v_rot(:) = MATMUL(rotation, (/x(i), y(i)/)) |
---|
[3395] | 891 | |
---|
[3866] | 892 | x(i) = v_rot(1) |
---|
| 893 | y(i) = v_rot(2) |
---|
[3395] | 894 | |
---|
[3866] | 895 | ENDDO |
---|
[3395] | 896 | |
---|
[3866] | 897 | END SUBROUTINE rotate_vector_field |
---|
[3395] | 898 | |
---|
| 899 | |
---|
| 900 | |
---|
[2696] | 901 | !------------------------------------------------------------------------------! |
---|
| 902 | ! Description: |
---|
| 903 | ! ------------ |
---|
[3395] | 904 | !> This routine computes the local meridian convergence between a rotated-pole |
---|
| 905 | !> and a geographical system using the Eq. (6) given in the DWD manual |
---|
| 906 | !> |
---|
| 907 | !> Baldauf et al. (2018), Beschreibung des operationelle KuÌrzestfrist- |
---|
| 908 | !> vorhersagemodells COSMO-D2 und COSMO-D2-EPS und seiner Ausgabe in die |
---|
| 909 | !> Datenbanken des DWD. |
---|
| 910 | !> https://www.dwd.de/SharedDocs/downloads/DE/modelldokumentationen/nwv/cosmo_d2/cosmo_d2_dbbeschr_aktuell.pdf?__blob=publicationFile&v=2 |
---|
[3557] | 911 | !------------------------------------------------------------------------------! |
---|
[3866] | 912 | FUNCTION meridian_convergence_rotated(phi_n, lam_n, phi_g, lam_g) & |
---|
| 913 | RESULT(delta) |
---|
[3395] | 914 | |
---|
[3866] | 915 | REAL(wp), INTENT(IN) :: phi_n, lam_n, phi_g, lam_g |
---|
| 916 | REAL(wp) :: delta |
---|
[3395] | 917 | |
---|
[3866] | 918 | delta = atan2( COS(phi_n) * SIN(lam_n - lam_g), & |
---|
| 919 | COS(phi_g) * SIN(phi_n) - & |
---|
| 920 | SIN(phi_g) * COS(phi_n) * COS(lam_n - lam_g) ) |
---|
[3395] | 921 | |
---|
[3866] | 922 | END FUNCTION meridian_convergence_rotated |
---|
[3395] | 923 | |
---|
| 924 | !------------------------------------------------------------------------------! |
---|
| 925 | ! Description: |
---|
| 926 | ! ------------ |
---|
[2696] | 927 | !> Compute indices of PALM-4U grid point neighbours in the target |
---|
| 928 | !> system (COSMO-DE) by rounding up and down. (i,j) are the indices of |
---|
| 929 | !> the PALM-4U grid and (ii(i,j,1-4), jj(i,j,1-4)) contain the indices |
---|
| 930 | !> of the its four neigbouring points in the COSMO-DE grid. |
---|
| 931 | !> |
---|
| 932 | !> |
---|
| 933 | !> COSMO-DE grid |
---|
| 934 | !> ------------- |
---|
| 935 | !> jj, lat |
---|
[3182] | 936 | !> ^ j |
---|
| 937 | !> | \ i |
---|
[2696] | 938 | !> jj(i,j,2/3) + ... 2 ---\--------/------ 3 |
---|
| 939 | !> | | ^ \ / | |
---|
| 940 | !> | | |wp \ / | |
---|
| 941 | !> | | v \ / | |
---|
| 942 | !> latpos + ............ o/ (i,j) | |
---|
| 943 | !> | | : | |
---|
| 944 | !> | | :<----wl---->| |
---|
| 945 | !> jj(i,j,1/4) + ... 1 -------:----------- 4 |
---|
| 946 | !> | : : : |
---|
| 947 | !> | : : : |
---|
| 948 | !> | : lonpos : |
---|
| 949 | !> L-----+--------+------------+------> ii, lon |
---|
| 950 | !> ii(i,j,1/2) ii(i,j,3/4) |
---|
| 951 | !> |
---|
| 952 | !> |
---|
| 953 | !> Input parameters: |
---|
| 954 | !> ----------------- |
---|
| 955 | !> source_lat, source_lon : (rotated-pole) coordinates of the source grid (e.g. |
---|
| 956 | !> COSMO-DE) |
---|
| 957 | !> |
---|
| 958 | !> source_dxi, source_dyi : inverse grid spacings of the source grid. |
---|
| 959 | !> |
---|
| 960 | !> target_lat, target_lon : (rotated-pole) coordinates of the target grid (e.g. |
---|
| 961 | !> COSMO-DE) |
---|
| 962 | !> |
---|
| 963 | !> Output parameters: |
---|
| 964 | !> ------------------ |
---|
| 965 | !> palm_ii, palm_jj : x and y index arrays of horizontal neighbour columns |
---|
| 966 | !> |
---|
| 967 | !------------------------------------------------------------------------------! |
---|
[3866] | 968 | SUBROUTINE find_horizontal_neighbours(cosmo_lat, cosmo_lon, & |
---|
| 969 | palm_clat, palm_clon, & |
---|
| 970 | palm_ii, palm_jj) |
---|
[2696] | 971 | |
---|
[4523] | 972 | REAL(wp), DIMENSION(0:), INTENT(IN) :: cosmo_lat, cosmo_lon |
---|
| 973 | REAL(wp), DIMENSION(0:,0:), INTENT(IN) :: palm_clat, palm_clon |
---|
| 974 | REAL(wp) :: cosmo_dxi, cosmo_dyi |
---|
| 975 | INTEGER(iwp), DIMENSION(0:,0:,1:), INTENT(OUT) :: palm_ii, palm_jj |
---|
[2696] | 976 | |
---|
[4523] | 977 | REAL(wp) :: lonpos, latpos, lon0, lat0 |
---|
| 978 | INTEGER(iwp) :: i, j |
---|
[2696] | 979 | |
---|
[3866] | 980 | lon0 = cosmo_lon(0) |
---|
| 981 | lat0 = cosmo_lat(0) |
---|
| 982 | cosmo_dxi = 1.0_wp / (cosmo_lon(1) - cosmo_lon(0)) |
---|
| 983 | cosmo_dyi = 1.0_wp / (cosmo_lat(1) - cosmo_lat(0)) |
---|
[2696] | 984 | |
---|
[3866] | 985 | DO j = 0, UBOUND(palm_clon, 2)!palm_grid%ny |
---|
| 986 | DO i = 0, UBOUND(palm_clon, 1)!palm_grid%nx |
---|
[3557] | 987 | ! |
---|
[3866] | 988 | !-- Compute the floating point index corrseponding to PALM-4U grid point |
---|
| 989 | !-- location along target grid (COSMO-DE) axes. |
---|
| 990 | lonpos = (palm_clon(i,j) - lon0) * cosmo_dxi |
---|
| 991 | latpos = (palm_clat(i,j) - lat0) * cosmo_dyi |
---|
[2696] | 992 | |
---|
[3866] | 993 | IF (lonpos < 0.0_wp .OR. latpos < 0.0_wp) THEN |
---|
| 994 | message = "lonpos or latpos out of bounds " // & |
---|
| 995 | "while finding interpolation neighbours!" // NEW_LINE(' ') // & |
---|
| 996 | " (i,j) = (" // & |
---|
| 997 | TRIM(str(i)) // ", " // TRIM(str(j)) // ")" // NEW_LINE(' ') //& |
---|
| 998 | " lonpos " // TRIM(real_to_str(lonpos*TO_DEGREES)) // & |
---|
| 999 | ", latpos " // TRIM(real_to_str(latpos*TO_DEGREES)) // NEW_LINE(' ') // & |
---|
| 1000 | " lon0 " // TRIM(real_to_str(lon0 *TO_DEGREES)) // & |
---|
| 1001 | ", lat0 " // TRIM(real_to_str(lat0*TO_DEGREES)) // NEW_LINE(' ') // & |
---|
| 1002 | " PALM lon " // TRIM(real_to_str(palm_clon(i,j)*TO_DEGREES)) // & |
---|
| 1003 | ", PALM lat " // TRIM(real_to_str(palm_clat(i,j)*TO_DEGREES)) |
---|
| 1004 | CALL inifor_abort('find_horizontal_neighbours', message) |
---|
| 1005 | ENDIF |
---|
[2696] | 1006 | |
---|
[3866] | 1007 | palm_ii(i,j,1) = FLOOR(lonpos) |
---|
| 1008 | palm_ii(i,j,2) = FLOOR(lonpos) |
---|
| 1009 | palm_ii(i,j,3) = CEILING(lonpos) |
---|
| 1010 | palm_ii(i,j,4) = CEILING(lonpos) |
---|
[2696] | 1011 | |
---|
[3866] | 1012 | palm_jj(i,j,1) = FLOOR(latpos) |
---|
| 1013 | palm_jj(i,j,2) = CEILING(latpos) |
---|
| 1014 | palm_jj(i,j,3) = CEILING(latpos) |
---|
| 1015 | palm_jj(i,j,4) = FLOOR(latpos) |
---|
| 1016 | ENDDO |
---|
| 1017 | ENDDO |
---|
[2696] | 1018 | |
---|
[3866] | 1019 | END SUBROUTINE find_horizontal_neighbours |
---|
[2696] | 1020 | |
---|
| 1021 | |
---|
[3557] | 1022 | !------------------------------------------------------------------------------! |
---|
| 1023 | ! Description: |
---|
| 1024 | ! ------------ |
---|
| 1025 | !> Computes linear vertical interpolation neighbour indices and weights for each |
---|
| 1026 | !> column of the given palm grid. |
---|
| 1027 | !------------------------------------------------------------------------------! |
---|
[4523] | 1028 | SUBROUTINE find_vertical_neighbours_and_weights_interp( palm_grid, & |
---|
| 1029 | palm_intermediate ) |
---|
[3866] | 1030 | TYPE(grid_definition), INTENT(INOUT) :: palm_grid |
---|
| 1031 | TYPE(grid_definition), INTENT(IN) :: palm_intermediate |
---|
[2696] | 1032 | |
---|
[4523] | 1033 | INTEGER(iwp) :: i, j, k, nx, ny, nz, nlev, k_intermediate |
---|
| 1034 | LOGICAL :: point_is_below_grid, point_is_above_grid, & |
---|
| 1035 | point_is_in_current_cell |
---|
| 1036 | REAL(wp) :: current_height, column_base, column_top, h_top, h_bottom, & |
---|
| 1037 | weight |
---|
[2696] | 1038 | |
---|
[3866] | 1039 | nx = palm_grid%nx |
---|
| 1040 | ny = palm_grid%ny |
---|
| 1041 | nz = palm_grid%nz |
---|
| 1042 | nlev = palm_intermediate%nz |
---|
[2696] | 1043 | |
---|
[3557] | 1044 | ! |
---|
[3866] | 1045 | !-- in each column of the fine grid, find vertical neighbours of every cell |
---|
| 1046 | DO j = 0, ny |
---|
| 1047 | DO i = 0, nx |
---|
[2696] | 1048 | |
---|
[3866] | 1049 | k_intermediate = 0 |
---|
[2696] | 1050 | |
---|
[4553] | 1051 | column_base = palm_intermediate%intermediate_h(i,j,0) |
---|
| 1052 | column_top = palm_intermediate%intermediate_h(i,j,nlev) |
---|
[2696] | 1053 | |
---|
[3557] | 1054 | ! |
---|
[3866] | 1055 | !-- scan through palm_grid column and set neighbour indices in |
---|
| 1056 | !-- case current_height is either below column_base, in the current |
---|
| 1057 | !-- cell, or above column_top. Keep increasing current cell index until |
---|
| 1058 | !-- the current cell overlaps with the current_height. |
---|
| 1059 | DO k = 1, nz |
---|
[2696] | 1060 | |
---|
[3557] | 1061 | ! |
---|
[3866] | 1062 | !-- Memorize the top and bottom boundaries of the coarse cell and the |
---|
| 1063 | !-- current height within it |
---|
| 1064 | current_height = palm_grid%z(k) + palm_grid%z0 |
---|
[4553] | 1065 | h_top = palm_intermediate%intermediate_h(i,j,k_intermediate+1) |
---|
| 1066 | h_bottom = palm_intermediate%intermediate_h(i,j,k_intermediate) |
---|
[2696] | 1067 | |
---|
[3866] | 1068 | point_is_above_grid = (current_height > column_top) !22000m, very unlikely |
---|
| 1069 | point_is_below_grid = (current_height < column_base) |
---|
[2696] | 1070 | |
---|
[3866] | 1071 | point_is_in_current_cell = ( & |
---|
| 1072 | current_height >= h_bottom .AND. & |
---|
| 1073 | current_height < h_top & |
---|
| 1074 | ) |
---|
[2696] | 1075 | |
---|
[3557] | 1076 | ! |
---|
[3866] | 1077 | !-- set default weights |
---|
| 1078 | palm_grid%w_verti(i,j,k,1:2) = 0.0_wp |
---|
[2696] | 1079 | |
---|
[3866] | 1080 | IF (point_is_above_grid) THEN |
---|
[2696] | 1081 | |
---|
[3866] | 1082 | palm_grid%kk(i,j,k,1:2) = nlev |
---|
| 1083 | palm_grid%w_verti(i,j,k,1:2) = - 2.0_wp |
---|
[2696] | 1084 | |
---|
[3866] | 1085 | message = "PALM-4U grid extends above COSMO-DE model top." |
---|
| 1086 | CALL inifor_abort('find_vertical_neighbours_and_weights', message) |
---|
[3182] | 1087 | |
---|
[3866] | 1088 | ELSE IF (point_is_below_grid) THEN |
---|
[2696] | 1089 | |
---|
[3866] | 1090 | palm_grid%kk(i,j,k,1:2) = 0 |
---|
| 1091 | palm_grid%w_verti(i,j,k,1:2) = - 2.0_wp |
---|
[2696] | 1092 | |
---|
[3866] | 1093 | ELSE |
---|
[3557] | 1094 | ! |
---|
[3866] | 1095 | !-- cycle through intermediate levels until current |
---|
| 1096 | !-- intermediate-grid cell overlaps with current_height |
---|
| 1097 | DO WHILE (.NOT. point_is_in_current_cell .AND. k_intermediate <= nlev-1) |
---|
| 1098 | k_intermediate = k_intermediate + 1 |
---|
[2696] | 1099 | |
---|
[4553] | 1100 | h_top = palm_intermediate%intermediate_h(i,j,k_intermediate+1) |
---|
| 1101 | h_bottom = palm_intermediate%intermediate_h(i,j,k_intermediate) |
---|
[3866] | 1102 | point_is_in_current_cell = ( & |
---|
| 1103 | current_height >= h_bottom .AND. & |
---|
| 1104 | current_height < h_top & |
---|
| 1105 | ) |
---|
| 1106 | ENDDO |
---|
[2696] | 1107 | |
---|
[3866] | 1108 | IF (k_intermediate > nlev-1) THEN |
---|
| 1109 | message = "Index " // TRIM(str(k_intermediate)) // & |
---|
| 1110 | " is above intermediate grid range." |
---|
| 1111 | CALL inifor_abort('find_vertical_neighbours', message) |
---|
| 1112 | ENDIF |
---|
[2696] | 1113 | |
---|
[3866] | 1114 | palm_grid%kk(i,j,k,1) = k_intermediate |
---|
| 1115 | palm_grid%kk(i,j,k,2) = k_intermediate + 1 |
---|
[2696] | 1116 | |
---|
[3557] | 1117 | ! |
---|
[3866] | 1118 | !-- compute vertical weights |
---|
| 1119 | weight = (h_top - current_height) / (h_top - h_bottom) |
---|
| 1120 | palm_grid%w_verti(i,j,k,1) = weight |
---|
| 1121 | palm_grid%w_verti(i,j,k,2) = 1.0_wp - weight |
---|
| 1122 | ENDIF |
---|
[2696] | 1123 | |
---|
[3785] | 1124 | ENDDO |
---|
[2696] | 1125 | |
---|
[3866] | 1126 | ENDDO |
---|
| 1127 | ENDDO |
---|
[2696] | 1128 | |
---|
[3866] | 1129 | END SUBROUTINE find_vertical_neighbours_and_weights_interp |
---|
[3395] | 1130 | |
---|
[3866] | 1131 | |
---|
[3557] | 1132 | !------------------------------------------------------------------------------! |
---|
| 1133 | ! Description: |
---|
| 1134 | ! ------------ |
---|
| 1135 | !> Computes linear vertical interpolation neighbour indices and weights for each |
---|
| 1136 | !> column of the given averaging grid. |
---|
| 1137 | !> |
---|
| 1138 | !> The difference to the _interp variant of this routine lies in how columns |
---|
| 1139 | !> are adressed. While the _interp variant loops over all PALM grid columns |
---|
| 1140 | !> given by combinations of all index indices (i,j), this routine loops over a |
---|
[4553] | 1141 | !> subset of COSMO columns, which are sequentially stored in the index lists |
---|
[3557] | 1142 | !> iii(:) and jjj(:). |
---|
| 1143 | !------------------------------------------------------------------------------! |
---|
[3866] | 1144 | SUBROUTINE find_vertical_neighbours_and_weights_average( & |
---|
| 1145 | avg_grid, level_based_averaging & |
---|
| 1146 | ) |
---|
[3395] | 1147 | |
---|
[3866] | 1148 | TYPE(grid_definition), INTENT(INOUT), TARGET :: avg_grid |
---|
| 1149 | LOGICAL :: level_based_averaging |
---|
[3395] | 1150 | |
---|
[4523] | 1151 | INTEGER(iwp) :: i, j, k_palm, k_intermediate, l, nlev |
---|
[3866] | 1152 | LOGICAL :: point_is_below_grid, point_is_above_grid, & |
---|
| 1153 | point_is_in_current_cell |
---|
| 1154 | REAL(wp) :: current_height, column_base, column_top, h_top, & |
---|
| 1155 | h_bottom, weight |
---|
| 1156 | REAL(wp), POINTER :: cosmo_h(:,:,:) |
---|
[3395] | 1157 | |
---|
[3613] | 1158 | |
---|
[3866] | 1159 | avg_grid%k_min = LBOUND(avg_grid%z, 1) |
---|
[3395] | 1160 | |
---|
[3866] | 1161 | nlev = SIZE(avg_grid%cosmo_h, 3) |
---|
[3395] | 1162 | |
---|
[4553] | 1163 | ! |
---|
| 1164 | !-- For level-based averaging, use the profile of averaged vertical mesoscale |
---|
| 1165 | !-- levels computed in init_averaging_grid(). |
---|
[3866] | 1166 | IF (level_based_averaging) THEN |
---|
[4553] | 1167 | cosmo_h => avg_grid%intermediate_h |
---|
[3866] | 1168 | ELSE |
---|
| 1169 | cosmo_h => avg_grid%cosmo_h |
---|
| 1170 | ENDIF |
---|
| 1171 | |
---|
| 1172 | ! |
---|
| 1173 | !-- in each column of the fine grid, find vertical neighbours of every cell |
---|
| 1174 | DO l = 1, avg_grid%n_columns |
---|
| 1175 | |
---|
[4553] | 1176 | !-- The profile of averaged vertical mesoscale levels stored in |
---|
| 1177 | !-- intermediate_h only contains one column. By using the same column -- and |
---|
| 1178 | !-- consequently the same vertical interpolation neighbours and weights -- |
---|
| 1179 | !-- |
---|
[3613] | 1180 | IF (level_based_averaging) THEN |
---|
[3866] | 1181 | i = 1 |
---|
| 1182 | j = 1 |
---|
[3613] | 1183 | ELSE |
---|
[3866] | 1184 | i = avg_grid%iii(l) |
---|
| 1185 | j = avg_grid%jjj(l) |
---|
[3785] | 1186 | ENDIF |
---|
[3613] | 1187 | |
---|
[3866] | 1188 | column_base = cosmo_h(i,j,1) |
---|
| 1189 | column_top = cosmo_h(i,j,nlev) |
---|
[3395] | 1190 | |
---|
[3557] | 1191 | ! |
---|
[4553] | 1192 | !-- Scan through avg_grid column until and set neighbour indices in |
---|
[3866] | 1193 | !-- case current_height is either below column_base, in the current |
---|
| 1194 | !-- cell, or above column_top. Keep increasing current cell index until |
---|
| 1195 | !-- the current cell overlaps with the current_height. |
---|
[4553] | 1196 | k_intermediate = 1 !avg_grid%cosmo_h is indexed 1-based. |
---|
[3866] | 1197 | DO k_palm = 1, avg_grid%nz |
---|
[3395] | 1198 | |
---|
[3557] | 1199 | ! |
---|
[3866] | 1200 | !-- Memorize the top and bottom boundaries of the coarse cell and the |
---|
| 1201 | !-- current height within it |
---|
| 1202 | current_height = avg_grid%z(k_palm) + avg_grid%z0 |
---|
| 1203 | h_top = cosmo_h(i,j,k_intermediate+1) |
---|
| 1204 | h_bottom = cosmo_h(i,j,k_intermediate) |
---|
[3395] | 1205 | |
---|
[3557] | 1206 | ! |
---|
[3866] | 1207 | !-- COSMO column top is located at 22000m, point_is_above_grid is very |
---|
| 1208 | !-- unlikely. |
---|
| 1209 | point_is_above_grid = (current_height > column_top) |
---|
| 1210 | point_is_below_grid = (current_height < column_base) |
---|
[3395] | 1211 | |
---|
[3866] | 1212 | point_is_in_current_cell = ( & |
---|
| 1213 | current_height >= h_bottom .AND. & |
---|
| 1214 | current_height < h_top & |
---|
| 1215 | ) |
---|
[3395] | 1216 | |
---|
[3557] | 1217 | ! |
---|
[3866] | 1218 | !-- set default weights |
---|
| 1219 | avg_grid%w(l,k_palm,1:2) = 0.0_wp |
---|
[3395] | 1220 | |
---|
[3866] | 1221 | IF (point_is_above_grid) THEN |
---|
[3395] | 1222 | |
---|
[3866] | 1223 | avg_grid%kkk(l,k_palm,1:2) = nlev |
---|
| 1224 | avg_grid%w(l,k_palm,1:2) = - 2.0_wp |
---|
[3395] | 1225 | |
---|
[3866] | 1226 | message = "PALM-4U grid extends above COSMO-DE model top." |
---|
| 1227 | CALL inifor_abort('find_vertical_neighbours_and_weights_average', message) |
---|
[3395] | 1228 | |
---|
[3866] | 1229 | ELSE IF (point_is_below_grid) THEN |
---|
[3395] | 1230 | |
---|
[3866] | 1231 | avg_grid%kkk(l,k_palm,1:2) = 0 |
---|
| 1232 | avg_grid%w(l,k_palm,1:2) = - 2.0_wp |
---|
| 1233 | avg_grid%k_min = MAX(k_palm + 1, avg_grid%k_min) |
---|
| 1234 | ELSE |
---|
[3557] | 1235 | ! |
---|
[3866] | 1236 | !-- cycle through intermediate levels until current |
---|
| 1237 | !-- intermediate-grid cell overlaps with current_height |
---|
| 1238 | DO WHILE (.NOT. point_is_in_current_cell .AND. k_intermediate <= nlev-1) |
---|
| 1239 | k_intermediate = k_intermediate + 1 |
---|
[3395] | 1240 | |
---|
[3866] | 1241 | h_top = cosmo_h(i,j,k_intermediate+1) |
---|
| 1242 | h_bottom = cosmo_h(i,j,k_intermediate) |
---|
| 1243 | point_is_in_current_cell = ( & |
---|
| 1244 | current_height >= h_bottom .AND. & |
---|
| 1245 | current_height < h_top & |
---|
| 1246 | ) |
---|
| 1247 | ENDDO |
---|
[3395] | 1248 | |
---|
[3557] | 1249 | ! |
---|
[3866] | 1250 | !-- k_intermediate = 48 indicates the last section (indices 48 and 49), i.e. |
---|
| 1251 | !-- k_intermediate = 49 is not the beginning of a valid cell. |
---|
| 1252 | IF (k_intermediate > nlev-1) THEN |
---|
| 1253 | message = "Index " // TRIM(str(k_intermediate)) // & |
---|
| 1254 | " is above intermediate grid range." |
---|
| 1255 | CALL inifor_abort('find_vertical_neighbours', message) |
---|
| 1256 | ENDIF |
---|
[3395] | 1257 | |
---|
[3866] | 1258 | avg_grid%kkk(l,k_palm,1) = k_intermediate |
---|
| 1259 | avg_grid%kkk(l,k_palm,2) = k_intermediate + 1 |
---|
[3395] | 1260 | |
---|
[3557] | 1261 | ! |
---|
[3866] | 1262 | !-- compute vertical weights |
---|
| 1263 | weight = (h_top - current_height) / (h_top - h_bottom) |
---|
| 1264 | avg_grid%w(l,k_palm,1) = weight |
---|
| 1265 | avg_grid%w(l,k_palm,2) = 1.0_wp - weight |
---|
| 1266 | ENDIF |
---|
[3395] | 1267 | |
---|
[3557] | 1268 | ! |
---|
[3866] | 1269 | !-- Loop over PALM levels k |
---|
| 1270 | ENDDO |
---|
[3557] | 1271 | |
---|
| 1272 | ! |
---|
[3866] | 1273 | !-- Loop over averaging columns l |
---|
| 1274 | ENDDO |
---|
[3395] | 1275 | |
---|
[3866] | 1276 | END SUBROUTINE find_vertical_neighbours_and_weights_average |
---|
[3395] | 1277 | |
---|
[2696] | 1278 | !------------------------------------------------------------------------------! |
---|
| 1279 | ! Description: |
---|
| 1280 | ! ------------ |
---|
| 1281 | !> Compute the four weights for horizontal bilinear interpolation given the |
---|
| 1282 | !> coordinates clon(i,j) clat(i,j) of the PALM-4U grid in the COSMO-DE |
---|
| 1283 | !> rotated-pole grid and the neightbour indices ii(i,j,1-4) and jj(i,j,1-4). |
---|
| 1284 | !> |
---|
| 1285 | !> Input parameters: |
---|
| 1286 | !> ----------------- |
---|
[3866] | 1287 | !> palm_grid%clon : longitudes of PALM-4U scalars (cell centres) in COSMO-DE's rotated-pole grid [rad] |
---|
[2696] | 1288 | !> |
---|
[3866] | 1289 | !> palm_grid%clat : latitudes of PALM-4U cell centres in COSMO-DE's rotated-pole grid [rad] |
---|
[2696] | 1290 | !> |
---|
[3866] | 1291 | !> cosmo_grid%lon : rotated-pole longitudes of scalars (cell centres) of the COSMO-DE grid [rad] |
---|
[2696] | 1292 | !> |
---|
[3866] | 1293 | !> cosmo_grid%lat : rotated-pole latitudes of scalars (cell centers) of the COSMO-DE grid [rad] |
---|
[2696] | 1294 | !> |
---|
[3866] | 1295 | !> cosmo_grid%dxi : inverse grid spacing in the first dimension [m^-1] |
---|
[2696] | 1296 | !> |
---|
[3866] | 1297 | !> cosmo_grid%dyi : inverse grid spacing in the second dimension [m^-1] |
---|
[2696] | 1298 | !> |
---|
| 1299 | !> Output parameters: |
---|
| 1300 | !> ------------------ |
---|
[3866] | 1301 | !> palm_grid%w_horiz(:,:,1-4) : weights for bilinear horizontal interpolation |
---|
[2696] | 1302 | ! |
---|
| 1303 | ! COSMO-DE grid |
---|
| 1304 | ! ------------- |
---|
| 1305 | ! jj, lat |
---|
| 1306 | ! ^ j |
---|
| 1307 | ! | \ i |
---|
| 1308 | ! jj(i,j,2/3) + ... 2 ---\--------/------ 3 |
---|
| 1309 | ! | | ^ \ / | |
---|
| 1310 | ! | | |wp \ / | |
---|
| 1311 | ! | | v \ / | |
---|
| 1312 | ! latpos + ............ o/ (i,j) | |
---|
| 1313 | ! | | : | |
---|
| 1314 | ! | | :<----wl---->| |
---|
| 1315 | ! jj(i,j,1/4) + ... 1 -------:----------- 4 |
---|
| 1316 | ! | : : : |
---|
| 1317 | ! | : : : |
---|
| 1318 | ! | : lonpos : |
---|
| 1319 | ! L-----+--------+------------+------> ii, lon |
---|
| 1320 | ! ii(i,j,1/2) ii(i,j,3/4) |
---|
| 1321 | ! |
---|
[3557] | 1322 | !------------------------------------------------------------------------------! |
---|
[3866] | 1323 | SUBROUTINE compute_horizontal_interp_weights(cosmo_lat, cosmo_lon, & |
---|
| 1324 | palm_clat, palm_clon, palm_ii, palm_jj, palm_w_horiz) |
---|
[2696] | 1325 | |
---|
[4523] | 1326 | REAL(wp), DIMENSION(0:), INTENT(IN) :: cosmo_lat, cosmo_lon |
---|
| 1327 | REAL(wp) :: cosmo_dxi, cosmo_dyi |
---|
| 1328 | REAL(wp), DIMENSION(0:,0:), INTENT(IN) :: palm_clat, palm_clon |
---|
| 1329 | INTEGER(iwp), DIMENSION(0:,0:,1:), INTENT(IN) :: palm_ii, palm_jj |
---|
[2696] | 1330 | |
---|
[3866] | 1331 | REAL(wp), DIMENSION(0:,0:,1:), INTENT(OUT) :: palm_w_horiz |
---|
[2696] | 1332 | |
---|
[4523] | 1333 | REAL(wp) :: wlambda, wphi |
---|
| 1334 | INTEGER(iwp) :: i, j |
---|
[2696] | 1335 | |
---|
[3866] | 1336 | cosmo_dxi = 1.0_wp / (cosmo_lon(1) - cosmo_lon(0)) |
---|
| 1337 | cosmo_dyi = 1.0_wp / (cosmo_lat(1) - cosmo_lat(0)) |
---|
[3182] | 1338 | |
---|
[3866] | 1339 | DO j = 0, UBOUND(palm_clon, 2) |
---|
| 1340 | DO i = 0, UBOUND(palm_clon, 1) |
---|
| 1341 | |
---|
[3557] | 1342 | ! |
---|
[3866] | 1343 | !-- weight in lambda direction |
---|
| 1344 | wlambda = ( cosmo_lon(palm_ii(i,j,4)) - palm_clon(i,j) ) * cosmo_dxi |
---|
[2696] | 1345 | |
---|
[3557] | 1346 | ! |
---|
[3866] | 1347 | !-- weight in phi direction |
---|
| 1348 | wphi = ( cosmo_lat(palm_jj(i,j,2)) - palm_clat(i,j) ) * cosmo_dyi |
---|
[2696] | 1349 | |
---|
[3866] | 1350 | IF (wlambda > 1.0_wp .OR. wlambda < 0.0_wp) THEN |
---|
| 1351 | message = "Horizontal weight wlambda = " // TRIM(real_to_str(wlambda)) // & |
---|
| 1352 | " is out bounds." |
---|
| 1353 | CALL inifor_abort('compute_horizontal_interp_weights', message) |
---|
| 1354 | ENDIF |
---|
| 1355 | IF (wphi > 1.0_wp .OR. wphi < 0.0_wp) THEN |
---|
| 1356 | message = "Horizontal weight wphi = " // TRIM(real_to_str(wphi)) // & |
---|
| 1357 | " is out bounds." |
---|
| 1358 | CALL inifor_abort('compute_horizontal_interp_weights', message) |
---|
| 1359 | ENDIF |
---|
[2696] | 1360 | |
---|
[3866] | 1361 | palm_w_horiz(i,j,1) = wlambda * wphi |
---|
| 1362 | palm_w_horiz(i,j,2) = wlambda * (1.0_wp - wphi) |
---|
| 1363 | palm_w_horiz(i,j,3) = (1.0_wp - wlambda) * (1.0_wp - wphi) |
---|
| 1364 | palm_w_horiz(i,j,4) = 1.0_wp - SUM( palm_w_horiz(i,j,1:3) ) |
---|
[2696] | 1365 | |
---|
[3866] | 1366 | ENDDO |
---|
| 1367 | ENDDO |
---|
[2696] | 1368 | |
---|
[3866] | 1369 | END SUBROUTINE compute_horizontal_interp_weights |
---|
[2696] | 1370 | |
---|
| 1371 | |
---|
| 1372 | !------------------------------------------------------------------------------! |
---|
| 1373 | ! Description: |
---|
| 1374 | ! ------------ |
---|
| 1375 | !> Interpolates u and v components of velocities located at cell faces to the |
---|
| 1376 | !> cell centres by averaging neighbouring values. |
---|
| 1377 | !> |
---|
| 1378 | !> This routine is designed to be used with COSMO-DE arrays where there are the |
---|
| 1379 | !> same number of grid points for scalars (centres) and velocities (faces). In |
---|
| 1380 | !> COSMO-DE the velocity points are staggared one half grid spaceing up-grid |
---|
| 1381 | !> which means the first centre point has to be omitted and is set to zero. |
---|
[3557] | 1382 | !------------------------------------------------------------------------------! |
---|
[3866] | 1383 | SUBROUTINE centre_velocities(u_face, v_face, u_centre, v_centre) |
---|
| 1384 | REAL(wp), DIMENSION(0:,0:,0:), INTENT(IN) :: u_face, v_face |
---|
| 1385 | REAL(wp), DIMENSION(0:,0:,0:), INTENT(OUT) :: u_centre, v_centre |
---|
[4523] | 1386 | INTEGER(iwp) :: nx, ny |
---|
[2696] | 1387 | |
---|
[3866] | 1388 | nx = UBOUND(u_face, 1) |
---|
| 1389 | ny = UBOUND(u_face, 2) |
---|
[2696] | 1390 | |
---|
[3866] | 1391 | u_centre(0,:,:) = 0.0_wp |
---|
| 1392 | u_centre(1:,:,:) = 0.5_wp * ( u_face(0:nx-1,:,:) + u_face(1:,:,:) ) |
---|
[2696] | 1393 | |
---|
[3866] | 1394 | v_centre(:,0,:) = 0.0_wp |
---|
| 1395 | v_centre(:,1:,:) = 0.5_wp * ( v_face(:,0:ny-1,:) + v_face(:,1:,:) ) |
---|
| 1396 | END SUBROUTINE centre_velocities |
---|
[2696] | 1397 | |
---|
| 1398 | |
---|
[3557] | 1399 | !------------------------------------------------------------------------------! |
---|
| 1400 | ! Description: |
---|
| 1401 | ! ------------ |
---|
| 1402 | !> Compute the geographical latitude of a point given in rotated-pole cordinates |
---|
| 1403 | !------------------------------------------------------------------------------! |
---|
[3866] | 1404 | FUNCTION phirot2phi (phirot, rlarot, polphi, polgam) |
---|
| 1405 | |
---|
| 1406 | REAL(wp), INTENT (IN) :: polphi !< latitude of the rotated north pole |
---|
| 1407 | REAL(wp), INTENT (IN) :: phirot !< latitude in the rotated system |
---|
| 1408 | REAL(wp), INTENT (IN) :: rlarot !< longitude in the rotated system |
---|
| 1409 | REAL(wp), INTENT (IN) :: polgam !< angle between the north poles of the systems |
---|
[2696] | 1410 | |
---|
[3866] | 1411 | REAL(wp) :: phirot2phi !< latitude in the geographical system |
---|
[2696] | 1412 | |
---|
[3866] | 1413 | REAL(wp) :: zsinpol, zcospol, zphis, zrlas, zarg, zgam |
---|
| 1414 | |
---|
| 1415 | zsinpol = SIN(polphi * TO_RADIANS) |
---|
| 1416 | zcospol = COS(polphi * TO_RADIANS) |
---|
| 1417 | zphis = phirot * TO_RADIANS |
---|
[2696] | 1418 | |
---|
[3866] | 1419 | IF (rlarot > 180.0_wp) THEN |
---|
| 1420 | zrlas = rlarot - 360.0_wp |
---|
| 1421 | ELSE |
---|
| 1422 | zrlas = rlarot |
---|
| 1423 | ENDIF |
---|
| 1424 | zrlas = zrlas * TO_RADIANS |
---|
| 1425 | |
---|
| 1426 | IF (polgam /= 0.0_wp) THEN |
---|
| 1427 | zgam = polgam * TO_RADIANS |
---|
| 1428 | zarg = zsinpol * SIN (zphis) + & |
---|
| 1429 | zcospol * COS(zphis) * ( COS(zrlas) * COS(zgam) - & |
---|
| 1430 | SIN(zgam) * SIN(zrlas) ) |
---|
| 1431 | ELSE |
---|
| 1432 | zarg = zcospol * COS (zphis) * COS (zrlas) + zsinpol * SIN (zphis) |
---|
| 1433 | ENDIF |
---|
| 1434 | |
---|
| 1435 | phirot2phi = ASIN (zarg) * TO_DEGREES |
---|
| 1436 | |
---|
| 1437 | END FUNCTION phirot2phi |
---|
[2696] | 1438 | |
---|
| 1439 | |
---|
[3557] | 1440 | !------------------------------------------------------------------------------! |
---|
| 1441 | ! Description: |
---|
| 1442 | ! ------------ |
---|
| 1443 | !> Compute the geographical latitude of a point given in rotated-pole cordinates |
---|
| 1444 | !------------------------------------------------------------------------------! |
---|
[3866] | 1445 | FUNCTION phi2phirot (phi, rla, polphi, pollam) |
---|
| 1446 | |
---|
| 1447 | REAL(wp), INTENT (IN) :: polphi !< latitude of the rotated north pole |
---|
| 1448 | REAL(wp), INTENT (IN) :: pollam !< longitude of the rotated north pole |
---|
| 1449 | REAL(wp), INTENT (IN) :: phi !< latitude in the geographical system |
---|
| 1450 | REAL(wp), INTENT (IN) :: rla !< longitude in the geographical system |
---|
[2696] | 1451 | |
---|
[3866] | 1452 | REAL(wp) :: phi2phirot !< longitude in the rotated system |
---|
| 1453 | |
---|
| 1454 | REAL(wp) :: zsinpol, zcospol, zlampol, zphi, zrla, zarg1, zarg2, zrla1 |
---|
| 1455 | |
---|
| 1456 | zsinpol = SIN(polphi * TO_RADIANS) |
---|
| 1457 | zcospol = COS(polphi * TO_RADIANS) |
---|
| 1458 | zlampol = pollam * TO_RADIANS |
---|
| 1459 | zphi = phi * TO_RADIANS |
---|
[2696] | 1460 | |
---|
[3866] | 1461 | IF (rla > 180.0_wp) THEN |
---|
| 1462 | zrla1 = rla - 360.0_wp |
---|
| 1463 | ELSE |
---|
| 1464 | zrla1 = rla |
---|
| 1465 | ENDIF |
---|
| 1466 | zrla = zrla1 * TO_RADIANS |
---|
[2696] | 1467 | |
---|
[3866] | 1468 | zarg1 = SIN(zphi) * zsinpol |
---|
| 1469 | zarg2 = COS(zphi) * zcospol * COS(zrla - zlampol) |
---|
| 1470 | |
---|
| 1471 | phi2phirot = ASIN(zarg1 + zarg2) * TO_DEGREES |
---|
| 1472 | |
---|
| 1473 | END FUNCTION phi2phirot |
---|
[2696] | 1474 | |
---|
| 1475 | |
---|
[3557] | 1476 | !------------------------------------------------------------------------------! |
---|
| 1477 | ! Description: |
---|
| 1478 | ! ------------ |
---|
| 1479 | !> Compute the geographical longitude of a point given in rotated-pole cordinates |
---|
| 1480 | !------------------------------------------------------------------------------! |
---|
[3866] | 1481 | FUNCTION rlarot2rla(phirot, rlarot, polphi, pollam, polgam) |
---|
| 1482 | |
---|
| 1483 | REAL(wp), INTENT (IN) :: polphi !< latitude of the rotated north pole |
---|
| 1484 | REAL(wp), INTENT (IN) :: pollam !< longitude of the rotated north pole |
---|
| 1485 | REAL(wp), INTENT (IN) :: phirot !< latitude in the rotated system |
---|
| 1486 | REAL(wp), INTENT (IN) :: rlarot !< longitude in the rotated system |
---|
| 1487 | REAL(wp), INTENT (IN) :: polgam !< angle between the north poles of the systems |
---|
[2696] | 1488 | |
---|
[3866] | 1489 | REAL(wp) :: rlarot2rla !< latitude in the geographical system |
---|
| 1490 | |
---|
| 1491 | REAL(wp) :: zsinpol, zcospol, zlampol, zphis, zrlas, zarg1, zarg2, zgam |
---|
| 1492 | |
---|
| 1493 | zsinpol = SIN(TO_RADIANS * polphi) |
---|
| 1494 | zcospol = COS(TO_RADIANS * polphi) |
---|
| 1495 | zlampol = TO_RADIANS * pollam |
---|
| 1496 | zphis = TO_RADIANS * phirot |
---|
[2696] | 1497 | |
---|
[3866] | 1498 | IF (rlarot > 180.0_wp) THEN |
---|
| 1499 | zrlas = rlarot - 360.0_wp |
---|
| 1500 | ELSE |
---|
| 1501 | zrlas = rlarot |
---|
| 1502 | ENDIF |
---|
| 1503 | zrlas = TO_RADIANS * zrlas |
---|
| 1504 | |
---|
| 1505 | IF (polgam /= 0.0_wp) THEN |
---|
| 1506 | zgam = TO_RADIANS * polgam |
---|
| 1507 | zarg1 = SIN(zlampol) * (zcospol * SIN(zphis) - zsinpol*COS(zphis) * & |
---|
| 1508 | (COS(zrlas) * COS(zgam) - SIN(zrlas) * SIN(zgam)) ) - & |
---|
| 1509 | COS(zlampol) * COS(zphis) * ( SIN(zrlas) * COS(zgam) + & |
---|
| 1510 | COS(zrlas) * SIN(zgam) ) |
---|
| 1511 | |
---|
| 1512 | zarg2 = COS (zlampol) * (zcospol * SIN(zphis) - zsinpol*COS(zphis) * & |
---|
| 1513 | (COS(zrlas) * COS(zgam) - SIN(zrlas) * SIN(zgam)) ) + & |
---|
| 1514 | SIN(zlampol) * COS(zphis) * ( SIN(zrlas) * COS(zgam) + & |
---|
| 1515 | COS(zrlas) * SIN(zgam) ) |
---|
| 1516 | ELSE |
---|
| 1517 | zarg1 = SIN (zlampol) * (-zsinpol * COS(zrlas) * COS(zphis) + & |
---|
| 1518 | zcospol * SIN(zphis)) - & |
---|
| 1519 | COS (zlampol) * SIN(zrlas) * COS(zphis) |
---|
| 1520 | zarg2 = COS (zlampol) * (-zsinpol * COS(zrlas) * COS(zphis) + & |
---|
| 1521 | zcospol * SIN(zphis)) + & |
---|
| 1522 | SIN (zlampol) * SIN(zrlas) * COS(zphis) |
---|
| 1523 | ENDIF |
---|
| 1524 | |
---|
| 1525 | IF (zarg2 == 0.0_wp) zarg2 = 1.0E-20_wp |
---|
| 1526 | |
---|
| 1527 | rlarot2rla = ATAN2(zarg1,zarg2) * TO_DEGREES |
---|
| 1528 | |
---|
| 1529 | END FUNCTION rlarot2rla |
---|
[2696] | 1530 | |
---|
| 1531 | |
---|
[3557] | 1532 | !------------------------------------------------------------------------------! |
---|
| 1533 | ! Description: |
---|
| 1534 | ! ------------ |
---|
| 1535 | !> Compute the rotated-pole longitude of a point given in geographical cordinates |
---|
| 1536 | !------------------------------------------------------------------------------! |
---|
[3866] | 1537 | FUNCTION rla2rlarot ( phi, rla, polphi, pollam, polgam ) |
---|
[2696] | 1538 | |
---|
[3866] | 1539 | REAL(wp), INTENT (IN) :: polphi !< latitude of the rotated north pole |
---|
| 1540 | REAL(wp), INTENT (IN) :: pollam !< longitude of the rotated north pole |
---|
| 1541 | REAL(wp), INTENT (IN) :: phi !< latitude in geographical system |
---|
| 1542 | REAL(wp), INTENT (IN) :: rla !< longitude in geographical system |
---|
| 1543 | REAL(wp), INTENT (IN) :: polgam !< angle between the north poles of the systems |
---|
| 1544 | |
---|
| 1545 | REAL(wp) :: rla2rlarot !< latitude in the the rotated system |
---|
| 1546 | |
---|
| 1547 | REAL(wp) :: zsinpol, zcospol, zlampol, zphi, zrla, zarg1, zarg2, zrla1 |
---|
| 1548 | |
---|
| 1549 | zsinpol = SIN(polphi * TO_RADIANS) |
---|
| 1550 | zcospol = COS(polphi * TO_RADIANS) |
---|
| 1551 | zlampol = pollam * TO_RADIANS |
---|
| 1552 | zphi = phi * TO_RADIANS |
---|
[2696] | 1553 | |
---|
[3866] | 1554 | IF (rla > 180.0_wp) THEN |
---|
| 1555 | zrla1 = rla - 360.0_wp |
---|
| 1556 | ELSE |
---|
| 1557 | zrla1 = rla |
---|
| 1558 | ENDIF |
---|
| 1559 | zrla = zrla1 * TO_RADIANS |
---|
| 1560 | |
---|
| 1561 | zarg1 = - SIN (zrla-zlampol) * COS(zphi) |
---|
| 1562 | zarg2 = - zsinpol * COS(zphi) * COS(zrla-zlampol) + zcospol * SIN(zphi) |
---|
| 1563 | |
---|
| 1564 | IF (zarg2 == 0.0_wp) zarg2 = 1.0E-20_wp |
---|
| 1565 | |
---|
| 1566 | rla2rlarot = ATAN2 (zarg1,zarg2) * TO_DEGREES |
---|
| 1567 | |
---|
| 1568 | IF (polgam /= 0.0_wp ) THEN |
---|
| 1569 | rla2rlarot = polgam + rla2rlarot |
---|
| 1570 | IF (rla2rlarot > 180._wp) rla2rlarot = rla2rlarot - 360.0_wp |
---|
| 1571 | ENDIF |
---|
| 1572 | |
---|
| 1573 | END FUNCTION rla2rlarot |
---|
[2696] | 1574 | |
---|
| 1575 | |
---|
[3557] | 1576 | !------------------------------------------------------------------------------! |
---|
| 1577 | ! Description: |
---|
| 1578 | ! ------------ |
---|
| 1579 | !> Rotate the given velocity vector (u,v) from the geographical to the |
---|
| 1580 | !> rotated-pole system |
---|
| 1581 | !------------------------------------------------------------------------------! |
---|
[3866] | 1582 | SUBROUTINE uv2uvrot(u, v, rlat, rlon, pollat, pollon, urot, vrot) |
---|
| 1583 | |
---|
| 1584 | REAL(wp), INTENT (IN) :: u, v !< wind components in the true geographical system |
---|
| 1585 | REAL(wp), INTENT (IN) :: rlat, rlon !< coordinates in the true geographical system |
---|
| 1586 | REAL(wp), INTENT (IN) :: pollat, pollon !< latitude and longitude of the north pole of the rotated grid |
---|
[2696] | 1587 | |
---|
[3866] | 1588 | REAL(wp), INTENT (OUT) :: urot, vrot !< wind components in the rotated grid |
---|
[2696] | 1589 | |
---|
[3866] | 1590 | REAL (wp) :: zsinpol, zcospol, zlonp, zlat, zarg1, zarg2, znorm |
---|
| 1591 | |
---|
| 1592 | zsinpol = SIN(pollat * TO_RADIANS) |
---|
| 1593 | zcospol = COS(pollat * TO_RADIANS) |
---|
| 1594 | zlonp = (pollon-rlon) * TO_RADIANS |
---|
| 1595 | zlat = rlat * TO_RADIANS |
---|
| 1596 | |
---|
| 1597 | zarg1 = zcospol * SIN(zlonp) |
---|
| 1598 | zarg2 = zsinpol * COS(zlat) - zcospol * SIN(zlat) * COS(zlonp) |
---|
| 1599 | znorm = 1.0_wp / SQRT(zarg1*zarg1 + zarg2*zarg2) |
---|
| 1600 | |
---|
| 1601 | urot = u * zarg2 * znorm - v * zarg1 * znorm |
---|
| 1602 | vrot = u * zarg1 * znorm + v * zarg2 * znorm |
---|
| 1603 | |
---|
| 1604 | END SUBROUTINE uv2uvrot |
---|
[2696] | 1605 | |
---|
| 1606 | |
---|
[3557] | 1607 | !------------------------------------------------------------------------------! |
---|
| 1608 | ! Description: |
---|
| 1609 | ! ------------ |
---|
| 1610 | !> Rotate the given velocity vector (urot, vrot) from the rotated-pole to the |
---|
| 1611 | !> geographical system |
---|
| 1612 | !------------------------------------------------------------------------------! |
---|
[3866] | 1613 | SUBROUTINE uvrot2uv (urot, vrot, rlat, rlon, pollat, pollon, u, v) |
---|
| 1614 | |
---|
| 1615 | REAL(wp), INTENT(IN) :: urot, vrot !< wind components in the rotated grid |
---|
| 1616 | REAL(wp), INTENT(IN) :: rlat, rlon !< latitude and longitude in the true geographical system |
---|
| 1617 | REAL(wp), INTENT(IN) :: pollat, pollon !< latitude and longitude of the north pole of the rotated grid |
---|
[2696] | 1618 | |
---|
[3866] | 1619 | REAL(wp), INTENT(OUT) :: u, v !< wind components in the true geographical system |
---|
[2696] | 1620 | |
---|
[3866] | 1621 | REAL(wp) :: zsinpol, zcospol, zlonp, zlat, zarg1, zarg2, znorm |
---|
| 1622 | |
---|
| 1623 | zsinpol = SIN(pollat * TO_RADIANS) |
---|
| 1624 | zcospol = COS(pollat * TO_RADIANS) |
---|
| 1625 | zlonp = (pollon-rlon) * TO_RADIANS |
---|
| 1626 | zlat = rlat * TO_RADIANS |
---|
| 1627 | |
---|
| 1628 | zarg1 = zcospol * SIN(zlonp) |
---|
| 1629 | zarg2 = zsinpol * COS(zlat) - zcospol * SIN(zlat) * COS(zlonp) |
---|
| 1630 | znorm = 1.0_wp / SQRT(zarg1*zarg1 + zarg2*zarg2) |
---|
| 1631 | |
---|
| 1632 | u = urot * zarg2 * znorm + vrot * zarg1 * znorm |
---|
| 1633 | v = - urot * zarg1 * znorm + vrot * zarg2 * znorm |
---|
| 1634 | |
---|
| 1635 | END SUBROUTINE uvrot2uv |
---|
[2696] | 1636 | |
---|
[3618] | 1637 | END MODULE inifor_transform |
---|
[3680] | 1638 | #endif |
---|
[2696] | 1639 | |
---|