MODULE radiation_model_mod !--------------------------------------------------------------------------------! ! This file is part of PALM. ! ! PALM is free software: you can redistribute it and/or modify it under the terms ! of the GNU General Public License as published by the Free Software Foundation, ! either version 3 of the License, or (at your option) any later version. ! ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. ! ! You should have received a copy of the GNU General Public License along with ! PALM. If not, see . ! ! Copyright 1997-2015 Leibniz Universitaet Hannover !--------------------------------------------------------------------------------! ! ! Current revisions: ! ----------------- ! ! ! Former revisions: ! ----------------- ! $Id: radiation_model.f90 1607 2015-06-29 10:44:15Z maronga $ ! ! 1606 2015-06-29 10:43:37Z maronga ! Added preprocessor directive __netcdf to allow for compiling without netCDF. ! Note, however, that RRTMG cannot be used without netCDF. ! ! 1590 2015-05-08 13:56:27Z maronga ! Bugfix: definition of character strings requires same length for all elements ! ! 1587 2015-05-04 14:19:01Z maronga ! Added albedo class for snow ! ! 1585 2015-04-30 07:05:52Z maronga ! Added support for RRTMG ! ! 1571 2015-03-12 16:12:49Z maronga ! Added missing KIND attribute. Removed upper-case variable names ! ! 1551 2015-03-03 14:18:16Z maronga ! Added support for data output. Various variables have been renamed. Added ! interface for different radiation schemes (currently: clear-sky, constant, and ! RRTM (not yet implemented). ! ! 1496 2014-12-02 17:25:50Z maronga ! Initial revision ! ! ! Description: ! ------------ ! Radiation models and interfaces ! To do: move variable definitions used in init_radiation only to the subroutine ! as they are no longer required after initialization. ! Note that many variables have a leading dummy dimension (0:0) in order to ! match the assume-size shape expected by the RRTMG model ! ! To do: ! - Output of full column vertical profiles used in RRTMG ! - Output of other rrtm arrays (such as volume mixing ratios) ! - Adapt for use with topography ! - Remove 3D dummy arrays (such as clear-sky output) !------------------------------------------------------------------------------! USE arrays_3d, & ONLY: hyp, pt, q, ql, zw USE cloud_parameters, & ONLY: cp, l_v, nc_const, rho_l, sigma_gc USE constants, & ONLY: pi USE control_parameters, & ONLY: cloud_droplets, cloud_physics, g, initializing_actions, & large_scale_forcing, lsf_surf, phi, pt_surface, & surface_pressure, time_since_reference_point USE indices, & ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb_s_inner, nzb, nzt USE kinds #if defined ( __netcdf ) USE netcdf #endif USE netcdf_control, & ONLY: dots_label, dots_num, dots_unit #if defined ( __rrtmg ) USE parrrsw, & ONLY: naerec, nbndsw USE parrrtm, & ONLY: nbndlw USE rrtmg_lw_init, & ONLY: rrtmg_lw_ini USE rrtmg_sw_init, & ONLY: rrtmg_sw_ini USE rrtmg_lw_rad, & ONLY: rrtmg_lw USE rrtmg_sw_rad, & ONLY: rrtmg_sw #endif IMPLICIT NONE CHARACTER(10) :: radiation_scheme = 'clear-sky' ! 'constant', 'clear-sky', or 'rrtmg' ! !-- Predefined Land surface classes (albedo_type) after Briegleb (1992) CHARACTER(37), DIMENSION(0:16), PARAMETER :: albedo_type_name = (/ & 'user defined ', & ! 0 'ocean ', & ! 1 'mixed farming, tall grassland ', & ! 2 'tall/medium grassland ', & ! 3 'evergreen shrubland ', & ! 4 'short grassland/meadow/shrubland ', & ! 5 'evergreen needleleaf forest ', & ! 6 'mixed deciduous evergreen forest ', & ! 7 'deciduous forest ', & ! 8 'tropical evergreen broadleaved forest', & ! 9 'medium/tall grassland/woodland ', & ! 10 'desert, sandy ', & ! 11 'desert, rocky ', & ! 12 'tundra ', & ! 13 'land ice ', & ! 14 'sea ice ', & ! 15 'snow ' & ! 16 /) INTEGER(iwp) :: albedo_type = 5, & !: Albedo surface type (default: short grassland) day, & !: current day of the year day_init = 172, & !: day of the year at model start (21/06) dots_rad = 0 !: starting index for timeseries output LOGICAL :: constant_albedo = .FALSE., & !: flag parameter indicating whether the albedo may change depending on zenith lw_radiation = .TRUE., & !: flag parameter indicing whether longwave radiation shall be calculated radiation = .FALSE., & !: flag parameter indicating whether the radiation model is used sun_up = .TRUE., & !: flag parameter indicating whether the sun is up or down sw_radiation = .TRUE. !: flag parameter indicing whether shortwave radiation shall be calculated REAL(wp), PARAMETER :: sigma_sb = 5.67E-8_wp, & !: Stefan-Boltzmann constant solar_constant = 1368.0_wp !: solar constant at top of atmosphere REAL(wp) :: albedo = 9999999.9_wp, & !: NAMELIST alpha albedo_lw_dif = 9999999.9_wp, & !: NAMELIST aldif albedo_lw_dir = 9999999.9_wp, & !: NAMELIST aldir albedo_sw_dif = 9999999.9_wp, & !: NAMELIST asdif albedo_sw_dir = 9999999.9_wp, & !: NAMELIST asdir dt_radiation = 0.0_wp, & !: radiation model timestep emissivity = 0.95_wp, & !: NAMELIST surface emissivity exn, & !: Exner function lon = 0.0_wp, & !: longitude in radians lat = 0.0_wp, & !: latitude in radians decl_1, & !: declination coef. 1 decl_2, & !: declination coef. 2 decl_3, & !: declination coef. 3 time_utc, & !: current time in UTC time_utc_init = 43200.0_wp, & !: UTC time at model start (noon) lambda = 0.0_wp, & !: longitude in degrees net_radiation = 0.0_wp, & !: net radiation at surface time_radiation = 0.0_wp, & !: time since last call of radiation code sky_trans !: sky transmissivity REAL(wp), DIMENSION(0:0) :: zenith !: solar zenith angle REAL(wp), DIMENSION(:,:), ALLOCATABLE :: & alpha, & !: surface broadband albedo (used for clear-sky scheme) rad_net, & !: net radiation at the surface rad_net_av !: average of rad_net ! !-- Land surface albedos for solar zenith angle of 60° after Briegleb (1992) !-- (shortwave, longwave, broadband): sw, lw, bb, REAL(wp), DIMENSION(0:2,1:16), PARAMETER :: albedo_pars = RESHAPE( (/& 0.06_wp, 0.06_wp, 0.06_wp, & ! 1 0.09_wp, 0.28_wp, 0.19_wp, & ! 2 0.11_wp, 0.33_wp, 0.23_wp, & ! 3 0.11_wp, 0.33_wp, 0.23_wp, & ! 4 0.14_wp, 0.34_wp, 0.25_wp, & ! 5 0.06_wp, 0.22_wp, 0.14_wp, & ! 6 0.06_wp, 0.27_wp, 0.17_wp, & ! 7 0.06_wp, 0.31_wp, 0.19_wp, & ! 8 0.06_wp, 0.22_wp, 0.14_wp, & ! 9 0.06_wp, 0.28_wp, 0.18_wp, & ! 10 0.35_wp, 0.51_wp, 0.43_wp, & ! 11 0.24_wp, 0.40_wp, 0.32_wp, & ! 12 0.10_wp, 0.27_wp, 0.19_wp, & ! 13 0.90_wp, 0.65_wp, 0.77_wp, & ! 14 0.90_wp, 0.65_wp, 0.77_wp, & ! 15 0.95_wp, 0.70_wp, 0.82_wp & ! 16 /), (/ 3, 16 /) ) REAL(wp), DIMENSION(:,:,:), ALLOCATABLE, TARGET :: & rad_sw_in, & !: incoming shortwave radiation (W/m2) rad_sw_in_av, & !: average of rad_sw_in rad_sw_out, & !: outgoing shortwave radiation (W/m2) rad_sw_out_av, & !: average of rad_sw_out rad_lw_in, & !: incoming longwave radiation (W/m2) rad_lw_in_av, & !: average of rad_lw_in rad_lw_out, & !: outgoing longwave radiation (W/m2) rad_lw_out_av !: average of rad_lw_out ! !-- Variables and parameters used in RRTMG only #if defined ( __rrtmg ) CHARACTER(LEN=12) :: rrtm_input_file = "RAD_SND_DATA" !: name of the NetCDF input file (sounding data) ! !-- Flag parameters for RRTMGS (should not be changed) INTEGER(iwp), PARAMETER :: rrtm_inflglw = 2, & !: flag for lw cloud optical properties (0,1,2) rrtm_iceflglw = 0, & !: flag for lw ice particle specifications (0,1,2,3) rrtm_liqflglw = 1, & !: flag for lw liquid droplet specifications rrtm_inflgsw = 2, & !: flag for sw cloud optical properties (0,1,2) rrtm_iceflgsw = 0, & !: flag for sw ice particle specifications (0,1,2,3) rrtm_liqflgsw = 1 !: flag for sw liquid droplet specifications ! !-- The following variables should be only changed with care, as this will !-- require further setting of some variables, which is currently not !-- implemented (aerosols, ice phase). INTEGER(iwp) :: nzt_rad, & !: upper vertical limit for radiation calculations rrtm_icld = 0, & !: cloud flag (0: clear sky column, 1: cloudy column) rrtm_iaer = 0, & !: aerosol option flag (0: no aerosol layers, for lw only: 6 (requires setting of rrtm_sw_ecaer), 10: one or more aerosol layers (not implemented) rrtm_idrv = 0 !: longwave upward flux calculation option (0,1) LOGICAL :: snd_exists = .FALSE. !: flag parameter to check whether a user-defined input files exists REAL(wp), PARAMETER :: mol_weight_air_d_wv = 1.607793_wp !: molecular weight dry air / water vapor REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd, & !: hypostatic pressure from sounding data (hPa) q_snd, & !: specific humidity from sounding data (kg/kg) - dummy at the moment rrtm_tsfc, & !: dummy array for storing surface temperature t_snd !: actual temperature from sounding data (hPa) REAL(wp), DIMENSION(:,:), ALLOCATABLE :: aldif, & !: longwave diffuse albedo solar angle of 60° aldir, & !: longwave direct albedo solar angle of 60° asdif, & !: shortwave diffuse albedo solar angle of 60° asdir, & !: shortwave direct albedo solar angle of 60° rrtm_ccl4vmr, & !: CCL4 volume mixing ratio (g/mol) rrtm_cfc11vmr, & !: CFC11 volume mixing ratio (g/mol) rrtm_cfc12vmr, & !: CFC12 volume mixing ratio (g/mol) rrtm_cfc22vmr, & !: CFC22 volume mixing ratio (g/mol) rrtm_ch4vmr, & !: CH4 volume mixing ratio rrtm_cicewp, & !: in-cloud ice water path (g/m²) rrtm_cldfr, & !: cloud fraction (0,1) rrtm_cliqwp, & !: in-cloud liquid water path (g/m²) rrtm_co2vmr, & !: CO2 volume mixing ratio (g/mol) rrtm_emis, & !: surface emissivity (0-1) rrtm_h2ovmr, & !: H2O volume mixing ratio rrtm_n2ovmr, & !: N2O volume mixing ratio rrtm_o2vmr, & !: O2 volume mixing ratio rrtm_o3vmr, & !: O3 volume mixing ratio rrtm_play, & !: pressure layers (hPa, zu-grid) rrtm_plev, & !: pressure layers (hPa, zw-grid) rrtm_reice, & !: cloud ice effective radius (microns) rrtm_reliq, & !: cloud water drop effective radius (microns) rrtm_tlay, & !: actual temperature (K, zu-grid) rrtm_tlev, & !: actual temperature (K, zw-grid) rrtm_lwdflx, & !: RRTM output of incoming longwave radiation flux (W/m2) rrtm_lwuflx, & !: RRTM output of outgoing longwave radiation flux (W/m2) rrtm_lwhr, & !: RRTM output of longwave radiation heating rate (K/d) rrtm_lwuflxc, & !: RRTM output of incoming clear sky longwave radiation flux (W/m2) rrtm_lwdflxc, & !: RRTM output of outgoing clear sky longwave radiation flux (W/m2) rrtm_lwhrc, & !: RRTM output of incoming longwave clear sky radiation heating rate (K/d) rrtm_swdflx, & !: RRTM output of incoming shortwave radiation flux (W/m2) rrtm_swuflx, & !: RRTM output of outgoing shortwave radiation flux (W/m2) rrtm_swhr, & !: RRTM output of shortwave radiation heating rate (K/d) rrtm_swuflxc, & !: RRTM output of incoming clear sky shortwave radiation flux (W/m2) rrtm_swdflxc, & !: RRTM output of outgoing clear sky shortwave radiation flux (W/m2) rrtm_swhrc !: RRTM output of incoming shortwave clear sky radiation heating rate (K/d) ! !-- Definition of arrays that are currently not used for calling RRTMG (due to setting of flag parameters) REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rad_lw_cs_in, & !: incoming clear sky longwave radiation (W/m2) (not used) rad_lw_cs_out, & !: outgoing clear sky longwave radiation (W/m2) (not used) rad_lw_cs_hr, & !: longwave clear sky radiation heating rate (K/d) (not used) rad_lw_hr, & !: longwave radiation heating rate (K/d) rad_sw_cs_in, & !: incoming clear sky shortwave radiation (W/m2) (not used) rad_sw_cs_out, & !: outgoing clear sky shortwave radiation (W/m2) (not used) rad_sw_cs_hr, & !: shortwave clear sky radiation heating rate (K/d) (not used) rad_sw_hr, & !: shortwave radiation heating rate (K/d) rrtm_aldif, & !: surface albedo for longwave diffuse radiation rrtm_aldir, & !: surface albedo for longwave direct radiation rrtm_asdif, & !: surface albedo for shortwave diffuse radiation rrtm_asdir, & !: surface albedo for shortwave direct radiation rrtm_lw_tauaer, & !: lw aerosol optical depth rrtm_lw_taucld, & !: lw in-cloud optical depth rrtm_sw_taucld, & !: sw in-cloud optical depth rrtm_sw_ssacld, & !: sw in-cloud single scattering albedo rrtm_sw_asmcld, & !: sw in-cloud asymmetry parameter rrtm_sw_fsfcld, & !: sw in-cloud forward scattering fraction rrtm_sw_tauaer, & !: sw aerosol optical depth rrtm_sw_ssaaer, & !: sw aerosol single scattering albedo rrtm_sw_asmaer, & !: sw aerosol asymmetry parameter rrtm_sw_ecaer !: sw aerosol optical detph at 0.55 microns (rrtm_iaer = 6 only) #endif INTERFACE init_radiation MODULE PROCEDURE init_radiation END INTERFACE init_radiation INTERFACE radiation_clearsky MODULE PROCEDURE radiation_clearsky END INTERFACE radiation_clearsky INTERFACE radiation_rrtmg MODULE PROCEDURE radiation_rrtmg END INTERFACE radiation_rrtmg INTERFACE radiation_tendency MODULE PROCEDURE radiation_tendency MODULE PROCEDURE radiation_tendency_ij END INTERFACE radiation_tendency SAVE PRIVATE PUBLIC albedo, albedo_type, albedo_type_name, albedo_lw_dif, albedo_lw_dir,& albedo_sw_dif, albedo_sw_dir, constant_albedo, day_init, dots_rad, & dt_radiation, init_radiation, lambda, lw_radiation, net_radiation, & rad_net, rad_net_av, radiation, radiation_clearsky, & radiation_rrtmg, radiation_scheme, radiation_tendency, rad_lw_in, & rad_lw_in_av, rad_lw_out, rad_lw_out_av, rad_sw_in, rad_sw_in_av, & rad_sw_out, rad_sw_out_av, sigma_sb, sw_radiation, time_radiation, & time_utc_init #if defined ( __rrtmg ) PUBLIC rrtm_aldif, rrtm_aldir, rrtm_asdif, rrtm_asdir #endif CONTAINS !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Initialization of the radiation model !------------------------------------------------------------------------------! SUBROUTINE init_radiation IMPLICIT NONE ! !-- Allocate array for storing the surface net radiation IF ( .NOT. ALLOCATED ( rad_net ) ) THEN ALLOCATE ( rad_net(nysg:nyng,nxlg:nxrg) ) rad_net = 0.0_wp ENDIF ! !-- Fix net radiation in case of radiation_scheme = 'constant' IF ( radiation_scheme == 'constant' ) THEN rad_net = net_radiation radiation = .FALSE. ! !-- Calculate orbital constants ELSE decl_1 = SIN(23.45_wp * pi / 180.0_wp) decl_2 = 2.0_wp * pi / 365.0_wp decl_3 = decl_2 * 81.0_wp lat = phi * pi / 180.0_wp lon = lambda * pi / 180.0_wp ENDIF IF ( radiation_scheme == 'clear-sky' ) THEN ALLOCATE ( alpha(nysg:nyng,nxlg:nxrg) ) IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN ALLOCATE ( rad_sw_in(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN ALLOCATE ( rad_sw_out(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN ALLOCATE ( rad_sw_in_av(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN ALLOCATE ( rad_sw_out_av(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN ALLOCATE ( rad_lw_in(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN ALLOCATE ( rad_lw_out(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN ALLOCATE ( rad_lw_in_av(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN ALLOCATE ( rad_lw_out_av(0:0,nysg:nyng,nxlg:nxrg) ) ENDIF rad_sw_in = 0.0_wp rad_sw_out = 0.0_wp rad_lw_in = 0.0_wp rad_lw_out = 0.0_wp ! !-- Overwrite albedo if manually set in parameter file IF ( albedo_type /= 0 .AND. albedo == 9999999.9_wp ) THEN albedo = albedo_pars(2,albedo_type) ENDIF alpha = albedo ! !-- Initialization actions for RRTMG ELSEIF ( radiation_scheme == 'rrtmg' ) THEN #if defined ( __rrtmg ) ! !-- Allocate albedos ALLOCATE ( rrtm_aldif(0:0,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rrtm_aldir(0:0,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rrtm_asdif(0:0,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rrtm_asdir(0:0,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( aldif(nysg:nyng,nxlg:nxrg) ) ALLOCATE ( aldir(nysg:nyng,nxlg:nxrg) ) ALLOCATE ( asdif(nysg:nyng,nxlg:nxrg) ) ALLOCATE ( asdir(nysg:nyng,nxlg:nxrg) ) IF ( albedo_type /= 0 ) THEN IF ( albedo_lw_dif == 9999999.9_wp ) THEN albedo_lw_dif = albedo_pars(0,albedo_type) albedo_lw_dir = albedo_lw_dif ENDIF IF ( albedo_sw_dif == 9999999.9_wp ) THEN albedo_sw_dif = albedo_pars(1,albedo_type) albedo_sw_dir = albedo_sw_dif ENDIF ENDIF aldif(:,:) = albedo_lw_dif aldir(:,:) = albedo_lw_dir asdif(:,:) = albedo_sw_dif asdir(:,:) = albedo_sw_dir ! !-- Calculate initial values of current (cosine of) the zenith angle and !-- whether the sun is up CALL calc_zenith ! !-- Calculate initial surface albedo IF ( .NOT. constant_albedo ) THEN CALL calc_albedo ELSE rrtm_aldif(0,:,:) = aldif(:,:) rrtm_aldir(0,:,:) = aldir(:,:) rrtm_asdif(0,:,:) = asdif(:,:) rrtm_asdir(0,:,:) = asdir(:,:) ENDIF ! !-- Allocate surface emissivity ALLOCATE ( rrtm_emis(0:0,1:nbndlw+1) ) rrtm_emis = emissivity ! !-- Allocate 3d arrays of radiative fluxes and heating rates ALLOCATE ( rad_sw_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rad_sw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rad_sw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rad_sw_cs_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) ) IF ( .NOT. ALLOCATED ( rad_sw_in ) ) THEN ALLOCATE ( rad_sw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) rad_sw_in = 0.0_wp ENDIF IF ( .NOT. ALLOCATED ( rad_sw_in_av ) ) THEN ALLOCATE ( rad_sw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) rad_sw_out = 0.0_wp ENDIF IF ( .NOT. ALLOCATED ( rad_sw_out ) ) THEN ALLOCATE ( rad_sw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_sw_out_av ) ) THEN ALLOCATE ( rad_sw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ENDIF ALLOCATE ( rad_lw_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rad_lw_cs_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rad_lw_cs_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ALLOCATE ( rad_lw_cs_hr(nzb+1:nzt+1,nysg:nyng,nxlg:nxrg) ) IF ( .NOT. ALLOCATED ( rad_lw_in ) ) THEN ALLOCATE ( rad_lw_in(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) rad_lw_in = 0.0_wp ENDIF IF ( .NOT. ALLOCATED ( rad_lw_in_av ) ) THEN ALLOCATE ( rad_lw_in_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ENDIF IF ( .NOT. ALLOCATED ( rad_lw_out ) ) THEN ALLOCATE ( rad_lw_out(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) rad_lw_out = 0.0_wp ENDIF IF ( .NOT. ALLOCATED ( rad_lw_out_av ) ) THEN ALLOCATE ( rad_lw_out_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) ENDIF rad_sw_hr = 0.0_wp rad_sw_cs_in = 0.0_wp rad_sw_cs_out = 0.0_wp rad_sw_cs_hr = 0.0_wp rad_lw_hr = 0.0_wp rad_lw_cs_in = 0.0_wp rad_lw_cs_out = 0.0_wp rad_lw_cs_hr = 0.0_wp ! !-- Allocate dummy array for storing surface temperature ALLOCATE ( rrtm_tsfc(1) ) ! !-- Initialize RRTMG IF ( lw_radiation ) CALL rrtmg_lw_ini ( cp ) IF ( sw_radiation ) CALL rrtmg_sw_ini ( cp ) ! !-- Set input files for RRTMG INQUIRE(FILE="RAD_SND_DATA", EXIST=snd_exists) IF ( .NOT. snd_exists ) THEN rrtm_input_file = "rrtmg_lw.nc" ENDIF ! !-- Read vertical layers for RRTMG from sounding data !-- The routine provides nzt_rad, hyp_snd(1:nzt_rad), !-- t_snd(nzt+2:nzt_rad), rrtm_play(1:nzt_rad), rrtm_plev(1_nzt_rad+1), !-- rrtm_tlay(nzt+2:nzt_rad), rrtm_tlev(nzt+2:nzt_rad+1) CALL read_sounding_data ! !-- Read trace gas profiles from file. This routine provides !-- the rrtm_ arrays (1:nzt_rad+1) CALL read_trace_gas_data #endif ENDIF ! !-- Perform user actions if required CALL user_init_radiation ! !-- Add timeseries for radiation model dots_rad = dots_num + 1 dots_label(dots_num+1) = "rad_net" dots_label(dots_num+2) = "rad_lw_in" dots_label(dots_num+3) = "rad_lw_out" dots_label(dots_num+4) = "rad_sw_in" dots_label(dots_num+5) = "rad_sw_out" dots_unit(dots_num+1:dots_num+5) = "W/m2" dots_num = dots_num + 5 ! !-- Output of albedos is only required for RRTMG IF ( radiation_scheme == 'rrtmg' ) THEN dots_label(dots_num+1) = "rrtm_aldif" dots_label(dots_num+2) = "rrtm_aldir" dots_label(dots_num+3) = "rrtm_asdif" dots_label(dots_num+4) = "rrtm_asdir" dots_unit(dots_num+1:dots_num+4) = "" dots_num = dots_num + 4 ENDIF ! !-- Calculate radiative fluxes at model start IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN IF ( radiation_scheme == 'clear-sky' ) THEN CALL radiation_clearsky ELSEIF ( radiation_scheme == 'rrtmg' ) THEN CALL radiation_rrtmg ENDIF ENDIF RETURN END SUBROUTINE init_radiation !------------------------------------------------------------------------------! ! Description: ! ------------ !-- A simple clear sky radiation model !------------------------------------------------------------------------------! SUBROUTINE radiation_clearsky USE indices, & ONLY: nbgp IMPLICIT NONE INTEGER(iwp) :: i, j, k ! !-- Calculate current zenith angle CALL calc_zenith ! !-- Calculate sky transmissivity sky_trans = 0.6_wp + 0.2_wp * zenith(0) ! !-- Calculate value of the Exner function exn = (surface_pressure / 1000.0_wp )**0.286_wp ! !-- Calculate radiation fluxes and net radiation (rad_net) for each grid !-- point DO i = nxl, nxr DO j = nys, nyn k = nzb_s_inner(j,i) rad_sw_in(0,j,i) = solar_constant * sky_trans * zenith(0) rad_sw_out(0,j,i) = alpha(j,i) * rad_sw_in(0,j,i) rad_lw_out(0,j,i) = sigma_sb * (pt(k,j,i) * exn)**4 rad_lw_in(0,j,i) = 0.8_wp * sigma_sb * (pt(k+1,j,i) * exn)**4 rad_net(j,i) = rad_sw_in(0,j,i) - rad_sw_out(0,j,i) & + rad_lw_in(0,j,i) - rad_lw_out(0,j,i) ENDDO ENDDO CALL exchange_horiz_2d( rad_lw_in, nbgp ) CALL exchange_horiz_2d( rad_lw_out, nbgp ) CALL exchange_horiz_2d( rad_sw_in, nbgp ) CALL exchange_horiz_2d( rad_sw_out, nbgp ) CALL exchange_horiz_2d( rad_net, nbgp ) RETURN END SUBROUTINE radiation_clearsky !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Implementation of the RRTMG radiation_scheme !------------------------------------------------------------------------------! SUBROUTINE radiation_rrtmg USE indices, & ONLY: nbgp USE particle_attributes, & ONLY: grid_particles, number_of_particles, particles, & particle_advection_start, prt_count IMPLICIT NONE #if defined ( __rrtmg ) INTEGER(iwp) :: i, j, k, n !: REAL(wp) :: s_r2 !: weighted sum over all droplets with r^2 REAL(wp) :: s_r3 !: weighted sum over all droplets with r^3 ! !-- Calculate current (cosine of) zenith angle and whether the sun is up CALL calc_zenith ! !-- Calculate surface albedo IF ( .NOT. constant_albedo ) THEN CALL calc_albedo ENDIF ! !-- Prepare input data for RRTMG ! !-- In case of large scale forcing with surface data, calculate new pressure !-- profile. nzt_rad might be modified by these calls and all required arrays !-- will then be re-allocated IF ( large_scale_forcing .AND. lsf_surf ) THEN CALL read_sounding_data CALL read_trace_gas_data ENDIF ! !-- Loop over all grid points DO i = nxl, nxr DO j = nys, nyn ! !-- Prepare profiles of temperature and H2O volume mixing ratio rrtm_tlev(0,nzb+1) = pt(nzb,j,i) DO k = nzb+1, nzt+1 rrtm_tlay(0,k) = pt(k,j,i) * ( (hyp(k) ) / 100000.0_wp & )**0.286_wp + ( l_v / cp ) * ql(k,j,i) rrtm_h2ovmr(0,k) = mol_weight_air_d_wv * (q(k,j,i) - ql(k,j,i)) ENDDO ! !-- Avoid temperature/humidity jumps at the top of the LES domain by !-- linear interpolation from nzt+2 to nzt+7 DO k = nzt+2, nzt+7 rrtm_tlay(0,k) = rrtm_tlay(0,nzt+1) & + ( rrtm_tlay(0,nzt+8) - rrtm_tlay(0,nzt+1) ) & / ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) ) & * ( rrtm_play(0,k) - rrtm_play(0,nzt+1) ) rrtm_h2ovmr(0,k) = rrtm_h2ovmr(0,nzt+1) & + ( rrtm_h2ovmr(0,nzt+8) - rrtm_h2ovmr(0,nzt+1) )& / ( rrtm_play(0,nzt+8) - rrtm_play(0,nzt+1) )& * ( rrtm_play(0,k) - rrtm_play(0,nzt+1) ) ENDDO !-- Linear interpolate to zw grid DO k = nzb+2, nzt+8 rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) - & rrtm_tlay(0,k-1)) & / ( rrtm_play(0,k) - rrtm_play(0,k-1) ) & * ( rrtm_plev(0,k) - rrtm_play(0,k-1) ) ENDDO ! !-- Calculate liquid water path and cloud fraction for each column. !-- Note that LWP is required in g/m² instead of kg/kg m. rrtm_cldfr = 0.0_wp rrtm_reliq = 0.0_wp rrtm_cliqwp = 0.0_wp DO k = nzb+1, nzt+1 rrtm_cliqwp(0,k) = ql(k,j,i) * 1000.0_wp * & (rrtm_plev(0,k) - rrtm_plev(0,k+1)) * 100.0_wp / g IF ( rrtm_cliqwp(0,k) .GT. 0 ) THEN rrtm_cldfr(0,k) = 1.0_wp rrtm_icld = 1 ! !-- Calculate cloud droplet effective radius IF ( cloud_physics ) THEN rrtm_reliq(0,k) = 1.0E6_wp * ( 3.0_wp * ql(k,j,i) & / ( 4.0_wp * pi * nc_const * rho_l ) & )**0.33333333333333_wp & * EXP( LOG( sigma_gc )**2 ) ELSEIF ( cloud_droplets ) THEN number_of_particles = prt_count(k,j,i) IF (number_of_particles <= 0) CYCLE particles => grid_particles(k,j,i)%particles(1:number_of_particles) s_r2 = 0.0_wp s_r3 = 0.0_wp DO n = 1, number_of_particles IF ( particles(n)%particle_mask ) THEN s_r2 = s_r2 + particles(n)%radius**2 * & particles(n)%weight_factor s_r3 = s_r3 + particles(n)%radius**3 * & particles(n)%weight_factor ENDIF ENDDO IF ( s_r2 > 0.0_wp ) rrtm_reliq(0,k) = s_r3 / s_r2 ENDIF ! !-- Limit effective radius IF ( rrtm_reliq(0,k) .GT. 0.0_wp ) THEN rrtm_reliq(0,k) = MAX(rrtm_reliq(0,k),2.5_wp) rrtm_reliq(0,k) = MIN(rrtm_reliq(0,k),60.0_wp) ENDIF ELSE rrtm_icld = 0 ENDIF ENDDO ! !-- Set surface temperature rrtm_tsfc = pt(nzb,j,i) * (surface_pressure / 1000.0_wp )**0.286_wp IF ( lw_radiation ) THEN CALL rrtmg_lw( 1, nzt_rad , rrtm_icld , rrtm_idrv ,& rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,& rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,& rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_cfc11vmr ,& rrtm_cfc12vmr , rrtm_cfc22vmr, rrtm_ccl4vmr , rrtm_emis ,& rrtm_inflglw , rrtm_iceflglw, rrtm_liqflglw, rrtm_cldfr ,& rrtm_lw_taucld , rrtm_cicewp , rrtm_cliqwp , rrtm_reice ,& rrtm_reliq , rrtm_lw_tauaer, & rrtm_lwuflx , rrtm_lwdflx , rrtm_lwhr , & rrtm_lwuflxc , rrtm_lwdflxc , rrtm_lwhrc ) DO k = nzb, nzt+1 rad_lw_in(k,j,i) = rrtm_lwdflx(0,k) rad_lw_out(k,j,i) = rrtm_lwuflx(0,k) ENDDO ENDIF IF ( sw_radiation .AND. sun_up ) THEN CALL rrtmg_sw( 1, nzt_rad , rrtm_icld , rrtm_iaer ,& rrtm_play , rrtm_plev , rrtm_tlay , rrtm_tlev ,& rrtm_tsfc , rrtm_h2ovmr , rrtm_o3vmr , rrtm_co2vmr ,& rrtm_ch4vmr , rrtm_n2ovmr , rrtm_o2vmr , rrtm_asdir(:,j,i),& rrtm_asdif(:,j,i), rrtm_aldir(:,j,i), rrtm_aldif(:,j,i), zenith,& 0.0_wp , day , solar_constant, rrtm_inflgsw,& rrtm_iceflgsw , rrtm_liqflgsw, rrtm_cldfr , rrtm_sw_taucld ,& rrtm_sw_ssacld , rrtm_sw_asmcld, rrtm_sw_fsfcld, rrtm_cicewp ,& rrtm_cliqwp , rrtm_reice , rrtm_reliq , rrtm_sw_tauaer ,& rrtm_sw_ssaaer , rrtm_sw_asmaer , rrtm_sw_ecaer , & rrtm_swuflx , rrtm_swdflx , rrtm_swhr , & rrtm_swuflxc , rrtm_swdflxc , rrtm_swhrc ) DO k = nzb, nzt+1 rad_sw_in(k,j,i) = rrtm_swdflx(0,k) rad_sw_out(k,j,i) = rrtm_swuflx(0,k) ENDDO ENDIF ! !-- Calculate surface net radiation rad_net(j,i) = rad_sw_in(nzb,j,i) - rad_sw_out(nzb,j,i) & + rad_lw_in(nzb,j,i) - rad_lw_out(nzb,j,i) ENDDO ENDDO CALL exchange_horiz( rad_lw_in, nbgp ) CALL exchange_horiz( rad_lw_out, nbgp ) CALL exchange_horiz( rad_sw_in, nbgp ) CALL exchange_horiz( rad_sw_out, nbgp ) CALL exchange_horiz_2d( rad_net, nbgp ) #endif END SUBROUTINE radiation_rrtmg !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Calculate the cosine of the zenith angle (variable is called zenith) !------------------------------------------------------------------------------! SUBROUTINE calc_zenith IMPLICIT NONE REAL(wp) :: declination, & !: solar declination angle hour_angle !: solar hour angle ! !-- Calculate current day and time based on the initial values and simulation !-- time day = day_init + INT(FLOOR( (time_utc_init + time_since_reference_point) & / 86400.0_wp ), KIND=iwp) time_utc = MOD((time_utc_init + time_since_reference_point), 86400.0_wp) ! !-- Calculate solar declination and hour angle declination = ASIN( decl_1 * SIN(decl_2 * REAL(day, KIND=wp) - decl_3) ) hour_angle = 2.0_wp * pi * (time_utc / 86400.0_wp) + lon - pi ! !-- Calculate zenith angle zenith(0) = SIN(lat) * SIN(declination) + COS(lat) * COS(declination) & * COS(hour_angle) zenith(0) = MAX(0.0_wp,zenith(0)) ! !-- Check if the sun is up (otheriwse shortwave calculations can be skipped) IF ( zenith(0) .GT. 0.0_wp ) THEN sun_up = .TRUE. ELSE sun_up = .FALSE. END IF END SUBROUTINE calc_zenith #if defined ( __rrtmg ) && defined ( __netcdf ) !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Calculates surface albedo components based on Briegleb (1992) and !-- Briegleb et al. (1986) !------------------------------------------------------------------------------! SUBROUTINE calc_albedo IMPLICIT NONE IF ( sun_up ) THEN ! !-- Ocean IF ( albedo_type == 1 ) THEN rrtm_aldir(0,:,:) = 0.026_wp / ( zenith(0)**1.7_wp + 0.065_wp ) & + 0.15_wp * ( zenith(0) - 0.1_wp ) & * ( zenith(0) - 0.5_wp ) & * ( zenith(0) - 1.0_wp ) rrtm_asdir(0,:,:) = rrtm_aldir(0,:,:) ! !-- Snow ELSEIF ( albedo_type == 16 ) THEN IF ( zenith(0) < 0.5_wp ) THEN rrtm_aldir(0,:,:) = 0.5_wp * (1.0_wp - aldif) & * ( 3.0_wp / (1.0_wp + 4.0_wp & * zenith(0))) - 1.0_wp rrtm_asdir(0,:,:) = 0.5_wp * (1.0_wp - asdif) & * ( 3.0_wp / (1.0_wp + 4.0_wp & * zenith(0))) - 1.0_wp rrtm_aldir(0,:,:) = MIN(0.98_wp, rrtm_aldir(0,:,:)) rrtm_asdir(0,:,:) = MIN(0.98_wp, rrtm_asdir(0,:,:)) ELSE rrtm_aldir(0,:,:) = aldif rrtm_asdir(0,:,:) = asdif ENDIF ! !-- Sea ice ELSEIF ( albedo_type == 15 ) THEN rrtm_aldir(0,:,:) = aldif rrtm_asdir(0,:,:) = asdif ! !-- Land surfaces ELSE SELECT CASE ( albedo_type ) ! !-- Surface types with strong zenith dependence CASE ( 1, 2, 3, 4, 11, 12, 13 ) rrtm_aldir(0,:,:) = aldif * 1.4_wp / & (1.0_wp + 0.8_wp * zenith(0)) rrtm_asdir(0,:,:) = asdif * 1.4_wp / & (1.0_wp + 0.8_wp * zenith(0)) ! !-- Surface types with weak zenith dependence CASE ( 5, 6, 7, 8, 9, 10, 14 ) rrtm_aldir(0,:,:) = aldif * 1.1_wp / & (1.0_wp + 0.2_wp * zenith(0)) rrtm_asdir(0,:,:) = asdif * 1.1_wp / & (1.0_wp + 0.2_wp * zenith(0)) CASE DEFAULT END SELECT ENDIF ! !-- Diffusive albedo is taken from Table 2 rrtm_aldif(0,:,:) = aldif rrtm_asdif(0,:,:) = asdif ELSE rrtm_aldir(0,:,:) = 0.0_wp rrtm_asdir(0,:,:) = 0.0_wp rrtm_aldif(0,:,:) = 0.0_wp rrtm_asdif(0,:,:) = 0.0_wp ENDIF END SUBROUTINE calc_albedo !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Read sounding data (pressure and temperature) from RADIATION_DATA. !------------------------------------------------------------------------------! SUBROUTINE read_sounding_data USE netcdf_control IMPLICIT NONE INTEGER(iwp) :: id, id_dim_zrad, id_var, k, nz_snd, nz_snd_start, nz_snd_end REAL(wp) :: t_surface REAL(wp), DIMENSION(:), ALLOCATABLE :: hyp_snd_tmp, t_snd_tmp ! !-- In case of updates, deallocate arrays first (sufficient to check one !-- array as the others are automatically allocated). This is required !-- because nzt_rad might change during the update IF ( ALLOCATED ( hyp_snd ) ) THEN DEALLOCATE( hyp_snd ) DEALLOCATE( t_snd ) DEALLOCATE( q_snd ) DEALLOCATE ( rrtm_play ) DEALLOCATE ( rrtm_plev ) DEALLOCATE ( rrtm_tlay ) DEALLOCATE ( rrtm_tlev ) DEALLOCATE ( rrtm_h2ovmr ) DEALLOCATE ( rrtm_cicewp ) DEALLOCATE ( rrtm_cldfr ) DEALLOCATE ( rrtm_cliqwp ) DEALLOCATE ( rrtm_reice ) DEALLOCATE ( rrtm_reliq ) DEALLOCATE ( rrtm_lw_taucld ) DEALLOCATE ( rrtm_lw_tauaer ) DEALLOCATE ( rrtm_lwdflx ) DEALLOCATE ( rrtm_lwuflx ) DEALLOCATE ( rrtm_lwhr ) DEALLOCATE ( rrtm_lwuflxc ) DEALLOCATE ( rrtm_lwdflxc ) DEALLOCATE ( rrtm_lwhrc ) DEALLOCATE ( rrtm_sw_taucld ) DEALLOCATE ( rrtm_sw_ssacld ) DEALLOCATE ( rrtm_sw_asmcld ) DEALLOCATE ( rrtm_sw_fsfcld ) DEALLOCATE ( rrtm_sw_tauaer ) DEALLOCATE ( rrtm_sw_ssaaer ) DEALLOCATE ( rrtm_sw_asmaer ) DEALLOCATE ( rrtm_sw_ecaer ) DEALLOCATE ( rrtm_swdflx ) DEALLOCATE ( rrtm_swuflx ) DEALLOCATE ( rrtm_swhr ) DEALLOCATE ( rrtm_swuflxc ) DEALLOCATE ( rrtm_swdflxc ) DEALLOCATE ( rrtm_swhrc ) ENDIF ! !-- Open file for reading nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id ) CALL handle_netcdf_error( 'netcdf', 549 ) ! !-- Inquire dimension of z axis and save in nz_snd nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim_zrad ) nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim_zrad, len = nz_snd ) CALL handle_netcdf_error( 'netcdf', 551 ) ! ! !-- Allocate temporary array for storing pressure data ALLOCATE( hyp_snd_tmp(nzb+1:nz_snd) ) hyp_snd_tmp = 0.0_wp !-- Read pressure from file nc_stat = NF90_INQ_VARID( id, "Pressure", id_var ) nc_stat = NF90_GET_VAR( id, id_var, hyp_snd_tmp(:), start = (/1/), & count = (/nz_snd/) ) CALL handle_netcdf_error( 'netcdf', 552 ) ! !-- Allocate temporary array for storing temperature data ALLOCATE( t_snd_tmp(nzb+1:nz_snd) ) t_snd_tmp = 0.0_wp ! !-- Read temperature from file nc_stat = NF90_INQ_VARID( id, "ReferenceTemperature", id_var ) nc_stat = NF90_GET_VAR( id, id_var, t_snd_tmp(:), start = (/1/), & count = (/nz_snd/) ) CALL handle_netcdf_error( 'netcdf', 553 ) ! !-- Calculate start of sounding data nz_snd_start = nz_snd + 1 nz_snd_end = nz_snd_end ! !-- Start filling vertical dimension at 10hPa above the model domain (hyp is !-- in Pa, hyp_snd in hPa). DO k = 1, nz_snd IF ( hyp_snd_tmp(k) .LT. (hyp(nzt+1) - 1000.0_wp) * 0.01_wp ) THEN nz_snd_start = k EXIT END IF END DO IF ( nz_snd_start .LE. nz_snd ) THEN nz_snd_end = nz_snd - 1 END IF ! !-- Calculate of total grid points for RRTMG calculations nzt_rad = nzt + nz_snd_end - nz_snd_start + 2 ! !-- Save data above LES domain in hyp_snd, t_snd and q_snd !-- Note: q_snd_tmp is not calculated at the moment (dry residual atmosphere) ALLOCATE( hyp_snd(nzb+1:nzt_rad) ) ALLOCATE( t_snd(nzb+1:nzt_rad) ) ALLOCATE( q_snd(nzb+1:nzt_rad) ) hyp_snd = 0.0_wp t_snd = 0.0_wp q_snd = 0.0_wp hyp_snd(nzt+2:nzt_rad) = hyp_snd_tmp(nz_snd_start:nz_snd_end) t_snd(nzt+2:nzt_rad) = t_snd_tmp(nz_snd_start:nz_snd_end) DEALLOCATE ( hyp_snd_tmp ) DEALLOCATE ( t_snd_tmp ) nc_stat = NF90_CLOSE( id ) ! !-- Calculate pressure levels on zu and zw grid. Sounding data is added at !-- top of the LES domain. This routine does not consider horizontal or !-- vertical variability of pressure and temperature ALLOCATE ( rrtm_play(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_plev(0:0,nzb+1:nzt_rad+2) ) t_surface = pt_surface * (surface_pressure / 1000.0_wp )**0.286_wp DO k = nzb+1, nzt+1 rrtm_play(0,k) = hyp(k) * 0.01_wp rrtm_plev(0,k) = surface_pressure * ( (t_surface - g/cp * zw(k-1)) / & t_surface )**(1.0_wp/0.286_wp) ENDDO DO k = nzt+2, nzt_rad rrtm_play(0,k) = hyp_snd(k) rrtm_plev(0,k) = 0.5_wp * ( rrtm_play(0,k) + rrtm_play(0,k-1) ) ENDDO rrtm_plev(0,nzt_rad+1) = MAX( 0.5 * hyp_snd(nzt_rad), & 1.5 * hyp_snd(nzt_rad) & - 0.5 * hyp_snd(nzt_rad-1) ) rrtm_plev(0,nzt_rad+2) = MIN( 1.0E-4_wp, & 0.25_wp * rrtm_plev(0,nzt_rad+1) ) rrtm_play(0,nzt_rad+1) = 0.5 * rrtm_plev(0,nzt_rad+1) ! !-- Calculate temperature/humidity levels at top of the LES domain. !-- Currently, the temperature is taken from sounding data (might lead to a !-- temperature jump at interface. To do: Humidity is currently not !-- calculated above the LES domain. ALLOCATE ( rrtm_tlay(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_tlev(0:0,nzb+1:nzt_rad+2) ) ALLOCATE ( rrtm_h2ovmr(0:0,nzb+1:nzt_rad+1) ) DO k = nzt+8, nzt_rad rrtm_tlay(0,k) = t_snd(k) rrtm_h2ovmr(0,k) = q_snd(k) ENDDO rrtm_tlay(0,nzt_rad+1) = 2.0_wp * rrtm_tlay(0,nzt_rad) & - rrtm_tlay(0,nzt_rad-1) DO k = nzt+9, nzt_rad+1 rrtm_tlev(0,k) = rrtm_tlay(0,k-1) + (rrtm_tlay(0,k) & - rrtm_tlay(0,k-1)) & / ( rrtm_play(0,k) - rrtm_play(0,k-1) ) & * ( rrtm_plev(0,k) - rrtm_play(0,k-1) ) ENDDO rrtm_h2ovmr(0,nzt_rad+1) = rrtm_h2ovmr(0,nzt_rad) rrtm_tlev(0,nzt_rad+2) = 2.0_wp * rrtm_tlay(0,nzt_rad+1) & - rrtm_tlev(0,nzt_rad) ! !-- Allocate remaining RRTMG arrays ALLOCATE ( rrtm_cicewp(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_cldfr(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_cliqwp(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_reice(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_reliq(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_lw_taucld(1:nbndlw+1,0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_lw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndlw+1) ) ALLOCATE ( rrtm_sw_taucld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_sw_ssacld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_sw_asmcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_sw_fsfcld(1:nbndsw+1,0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_sw_tauaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) ) ALLOCATE ( rrtm_sw_ssaaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) ) ALLOCATE ( rrtm_sw_asmaer(0:0,nzb+1:nzt_rad+1,1:nbndsw+1) ) ALLOCATE ( rrtm_sw_ecaer(0:0,nzb+1:nzt_rad+1,1:naerec+1) ) ! !-- The ice phase is currently not considered in PALM rrtm_cicewp = 0.0_wp rrtm_reice = 0.0_wp ! !-- Set other parameters (move to NAMELIST parameters in the future) rrtm_lw_tauaer = 0.0_wp rrtm_lw_taucld = 0.0_wp rrtm_sw_taucld = 0.0_wp rrtm_sw_ssacld = 0.0_wp rrtm_sw_asmcld = 0.0_wp rrtm_sw_fsfcld = 0.0_wp rrtm_sw_tauaer = 0.0_wp rrtm_sw_ssaaer = 0.0_wp rrtm_sw_asmaer = 0.0_wp rrtm_sw_ecaer = 0.0_wp ALLOCATE ( rrtm_swdflx(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_swuflx(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_swhr(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_swuflxc(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_swdflxc(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_swhrc(0:0,nzb+1:nzt_rad+1) ) rrtm_swdflx = 0.0_wp rrtm_swuflx = 0.0_wp rrtm_swhr = 0.0_wp rrtm_swuflxc = 0.0_wp rrtm_swdflxc = 0.0_wp rrtm_swhrc = 0.0_wp ALLOCATE ( rrtm_lwdflx(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_lwuflx(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_lwhr(0:0,nzb+1:nzt_rad+1) ) ALLOCATE ( rrtm_lwuflxc(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_lwdflxc(0:0,nzb:nzt_rad+1) ) ALLOCATE ( rrtm_lwhrc(0:0,nzb+1:nzt_rad+1) ) rrtm_lwdflx = 0.0_wp rrtm_lwuflx = 0.0_wp rrtm_lwhr = 0.0_wp rrtm_lwuflxc = 0.0_wp rrtm_lwdflxc = 0.0_wp rrtm_lwhrc = 0.0_wp END SUBROUTINE read_sounding_data !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Read trace gas data from file !------------------------------------------------------------------------------! SUBROUTINE read_trace_gas_data USE netcdf_control USE rrsw_ncpar IMPLICIT NONE INTEGER(iwp), PARAMETER :: num_trace_gases = 9 !: number of trace gases CHARACTER(LEN=5), DIMENSION(num_trace_gases), PARAMETER :: & trace_names = (/'O3 ', 'CO2 ', 'CH4 ', 'N2O ', 'O2 ', & 'CFC11', 'CFC12', 'CFC22', 'CCL4 '/) INTEGER(iwp) :: id, k, m, n, nabs, np, id_abs, id_dim, id_var REAL(wp) :: p_mls_l, p_mls_u, p_wgt_l, p_wgt_u, p_mls_m REAL(wp), DIMENSION(:), ALLOCATABLE :: p_mls, & !: pressure levels for the absorbers rrtm_play_tmp, & !: temporary array for pressure zu-levels rrtm_plev_tmp, & !: temporary array for pressure zw-levels trace_path_tmp !: temporary array for storing trace gas path data REAL(wp), DIMENSION(:,:), ALLOCATABLE :: trace_mls, & !: array for storing the absorber amounts trace_mls_path, & !: array for storing trace gas path data trace_mls_tmp !: temporary array for storing trace gas data ! !-- In case of updates, deallocate arrays first (sufficient to check one !-- array as the others are automatically allocated) IF ( ALLOCATED ( rrtm_o3vmr ) ) THEN DEALLOCATE ( rrtm_o3vmr ) DEALLOCATE ( rrtm_co2vmr ) DEALLOCATE ( rrtm_ch4vmr ) DEALLOCATE ( rrtm_n2ovmr ) DEALLOCATE ( rrtm_o2vmr ) DEALLOCATE ( rrtm_cfc11vmr ) DEALLOCATE ( rrtm_cfc12vmr ) DEALLOCATE ( rrtm_cfc22vmr ) DEALLOCATE ( rrtm_ccl4vmr ) ENDIF ! !-- Allocate trace gas profiles ALLOCATE ( rrtm_o3vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_co2vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_ch4vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_n2ovmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_o2vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_cfc11vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_cfc12vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_cfc22vmr(0:0,1:nzt_rad+1) ) ALLOCATE ( rrtm_ccl4vmr(0:0,1:nzt_rad+1) ) ! !-- Open file for reading nc_stat = NF90_OPEN( rrtm_input_file, NF90_NOWRITE, id ) CALL handle_netcdf_error( 'netcdf', 549 ) ! !-- Inquire dimension ids and dimensions nc_stat = NF90_INQ_DIMID( id, "Pressure", id_dim ) CALL handle_netcdf_error( 'netcdf', 550 ) nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = np) CALL handle_netcdf_error( 'netcdf', 550 ) nc_stat = NF90_INQ_DIMID( id, "Absorber", id_dim ) CALL handle_netcdf_error( 'netcdf', 550 ) nc_stat = NF90_INQUIRE_DIMENSION( id, id_dim, len = nabs ) CALL handle_netcdf_error( 'netcdf', 550 ) ! !-- Allocate pressure, and trace gas arrays ALLOCATE( p_mls(1:np) ) ALLOCATE( trace_mls(1:num_trace_gases,1:np) ) ALLOCATE( trace_mls_tmp(1:nabs,1:np) ) nc_stat = NF90_INQ_VARID( id, "Pressure", id_var ) CALL handle_netcdf_error( 'netcdf', 550 ) nc_stat = NF90_GET_VAR( id, id_var, p_mls ) CALL handle_netcdf_error( 'netcdf', 550 ) nc_stat = NF90_INQ_VARID( id, "AbsorberAmountMLS", id_var ) CALL handle_netcdf_error( 'netcdf', 550 ) nc_stat = NF90_GET_VAR( id, id_var, trace_mls_tmp ) CALL handle_netcdf_error( 'netcdf', 550 ) ! !-- Write absorber amounts (mls) to trace_mls DO n = 1, num_trace_gases CALL getAbsorberIndex( TRIM( trace_names(n) ), id_abs ) trace_mls(n,1:np) = trace_mls_tmp(id_abs,1:np) ! !-- Replace missing values by zero WHERE ( trace_mls(n,:) > 2.0_wp ) trace_mls(n,:) = 0.0_wp END WHERE END DO DEALLOCATE ( trace_mls_tmp ) nc_stat = NF90_CLOSE( id ) CALL handle_netcdf_error( 'netcdf', 551 ) ! !-- Add extra pressure level for calculations of the trace gas paths ALLOCATE ( rrtm_play_tmp(1:nzt_rad+1) ) ALLOCATE ( rrtm_plev_tmp(1:nzt_rad+2) ) rrtm_play_tmp(1:nzt_rad) = rrtm_play(0,1:nzt_rad) rrtm_plev_tmp(1:nzt_rad+1) = rrtm_plev(0,1:nzt_rad+1) rrtm_play_tmp(nzt_rad+1) = rrtm_plev(0,nzt_rad+1) * 0.5_wp rrtm_plev_tmp(nzt_rad+2) = MIN( 1.0E-4_wp, 0.25_wp & * rrtm_plev(0,nzt_rad+1) ) ! !-- Calculate trace gas path (zero at surface) with interpolation to the !-- sounding levels ALLOCATE ( trace_mls_path(1:nzt_rad+2,1:num_trace_gases) ) trace_mls_path(nzb+1,:) = 0.0_wp DO k = nzb+2, nzt_rad+2 DO m = 1, num_trace_gases trace_mls_path(k,m) = trace_mls_path(k-1,m) ! !-- When the pressure level is higher than the trace gas pressure !-- level, assume that IF ( rrtm_plev_tmp(k-1) .GT. p_mls(1) ) THEN trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,1) & * ( rrtm_plev_tmp(k-1) & - MAX( p_mls(1), rrtm_plev_tmp(k) ) & ) / g ENDIF ! !-- Integrate for each sounding level from the contributing p_mls !-- levels DO n = 2, np ! !-- Limit p_mls so that it is within the model level p_mls_u = MIN( rrtm_plev_tmp(k-1), & MAX( rrtm_plev_tmp(k), p_mls(n) ) ) p_mls_l = MIN( rrtm_plev_tmp(k-1), & MAX( rrtm_plev_tmp(k), p_mls(n-1) ) ) IF ( p_mls_l .GT. p_mls_u ) THEN ! !-- Calculate weights for interpolation p_mls_m = 0.5_wp * (p_mls_l + p_mls_u) p_wgt_u = (p_mls(n-1) - p_mls_m) / (p_mls(n-1) - p_mls(n)) p_wgt_l = (p_mls_m - p_mls(n)) / (p_mls(n-1) - p_mls(n)) ! !-- Add level to trace gas path trace_mls_path(k,m) = trace_mls_path(k,m) & + ( p_wgt_u * trace_mls(m,n) & + p_wgt_l * trace_mls(m,n-1) ) & * (p_mls_l + p_mls_u) / g ENDIF ENDDO IF ( rrtm_plev_tmp(k) .LT. p_mls(np) ) THEN trace_mls_path(k,m) = trace_mls_path(k,m) + trace_mls(m,np) & * ( MIN( rrtm_plev_tmp(k-1), p_mls(np) ) & - rrtm_plev_tmp(k) & ) / g ENDIF ENDDO ENDDO ! !-- Prepare trace gas path profiles ALLOCATE ( trace_path_tmp(1:nzt_rad+1) ) DO m = 1, num_trace_gases trace_path_tmp(1:nzt_rad+1) = ( trace_mls_path(2:nzt_rad+2,m) & - trace_mls_path(1:nzt_rad+1,m) ) * g & / ( rrtm_plev_tmp(1:nzt_rad+1) & - rrtm_plev_tmp(2:nzt_rad+2) ) ! !-- Save trace gas paths to the respective arrays SELECT CASE ( TRIM( trace_names(m) ) ) CASE ( 'O3' ) rrtm_o3vmr(0,:) = trace_path_tmp(:) CASE ( 'CO2' ) rrtm_co2vmr(0,:) = trace_path_tmp(:) CASE ( 'CH4' ) rrtm_ch4vmr(0,:) = trace_path_tmp(:) CASE ( 'N2O' ) rrtm_n2ovmr(0,:) = trace_path_tmp(:) CASE ( 'O2' ) rrtm_o2vmr(0,:) = trace_path_tmp(:) CASE ( 'CFC11' ) rrtm_cfc11vmr(0,:) = trace_path_tmp(:) CASE ( 'CFC12' ) rrtm_cfc12vmr(0,:) = trace_path_tmp(:) CASE ( 'CFC22' ) rrtm_cfc22vmr(0,:) = trace_path_tmp(:) CASE ( 'CCL4' ) rrtm_ccl4vmr(0,:) = trace_path_tmp(:) CASE DEFAULT END SELECT ENDDO DEALLOCATE ( trace_path_tmp ) DEALLOCATE ( trace_mls_path ) DEALLOCATE ( rrtm_play_tmp ) DEALLOCATE ( rrtm_plev_tmp ) DEALLOCATE ( trace_mls ) DEALLOCATE ( p_mls ) END SUBROUTINE read_trace_gas_data #endif !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Calculate temperature tendency due to radiative cooling/heating. !-- Cache-optimized version. !------------------------------------------------------------------------------! SUBROUTINE radiation_tendency_ij ( i, j, tend ) USE arrays_3d, & ONLY: dzw USE cloud_parameters, & ONLY: pt_d_t, cp USE control_parameters, & ONLY: rho_surface IMPLICIT NONE INTEGER(iwp) :: i, j, k REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend #if defined ( __rrtmg ) REAL(wp) :: rad_sw_net_l, rad_sw_net_u, rad_lw_net_l, rad_lw_net_u rad_sw_net_l = 0.0_wp rad_sw_net_u = 0.0_wp rad_lw_net_l = 0.0_wp rad_lw_net_u = 0.0_wp ! !-- Calculate radiative flux divergence DO k = nzb+1, nzt+1 rad_sw_net_l = rad_sw_in(k-1,j,i) - rad_sw_out(k-1,j,i) rad_sw_net_u = rad_sw_in(k,j,i) - rad_sw_out(k,j,i) rad_lw_net_l = rad_lw_in(k-1,j,i) - rad_lw_out(k-1,j,i) rad_lw_net_u = rad_lw_in(k,j,i) - rad_lw_out(k,j,i) tend(k,j,i) = tend(k,j,i) + ( rad_sw_net_u - rad_sw_net_l & + rad_lw_net_u - rad_lw_net_l ) / & ( dzw(k) * cp * rho_surface ) * pt_d_t(k) ENDDO #endif END SUBROUTINE radiation_tendency_ij !------------------------------------------------------------------------------! ! Description: ! ------------ !-- Calculate temperature tendency due to radiative cooling/heating. !-- Vector-optimized version !------------------------------------------------------------------------------! SUBROUTINE radiation_tendency ( tend ) USE arrays_3d, & ONLY: dzw USE cloud_parameters, & ONLY: pt_d_t, cp USE indices, & ONLY: nxl, nxr, nyn, nys USE control_parameters, & ONLY: rho_surface IMPLICIT NONE INTEGER(iwp) :: i, j, k REAL(wp), DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: tend #if defined ( __rrtmg ) REAL(wp) :: rad_sw_net_l, rad_sw_net_u, rad_lw_net_l, rad_lw_net_u rad_sw_net_l = 0.0_wp rad_sw_net_u = 0.0_wp rad_lw_net_l = 0.0_wp rad_lw_net_u = 0.0_wp DO i = nxl, nxr DO j = nys, nyn ! !-- Calculate radiative flux divergence DO k = nzb+1, nzt+1 rad_sw_net_l = rad_sw_in(k-1,j,i) - rad_sw_out(k-1,j,i) rad_sw_net_u = rad_sw_in(k ,j,i) - rad_sw_out(k ,j,i) rad_lw_net_l = rad_lw_in(k-1,j,i) - rad_lw_out(k-1,j,i) rad_lw_net_u = rad_lw_in(k ,j,i) - rad_lw_out(k ,j,i) tend(k,j,i) = tend(k,j,i) + ( rad_sw_net_u - rad_sw_net_l & + rad_lw_net_u - rad_lw_net_l ) / & ( dzw(k) * cp * rho_surface ) * pt_d_t(k) ENDDO ENDDO ENDDO #endif END SUBROUTINE radiation_tendency END MODULE radiation_model_mod