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source: palm/trunk/SOURCE/ocean_mod.f90 @ 3622

Last change on this file since 3622 was 3614, checked in by raasch, 6 years ago
unused variables removed, abort renamed inifor_abort to avoid intrinsic problem in Fortran
Property svn:keywords set to `Id`
File size: 82.6 KB

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[3294]	1	!> @file ocean_mod.f90
	2	!------------------------------------------------------------------------------!
	3	! This file is part of the PALM model system.
	4	!
	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
	8	! version.
	9	!
	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.
	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	!
	17	! Copyright 2017-2018 Leibniz Universitaet Hannover
	18	!--------------------------------------------------------------------------------!
	19	!
	20	! Current revisions:
	21	! -----------------
	22	!
	23	!
	24	! Former revisions:
	25	! -----------------
	26	! $Id: ocean_mod.f90 3614 2018-12-10 07:05:46Z schwenkel $
[3614]	27	! unused variables removed
	28	!
	29	! 3568 2018-11-27 16:07:59Z raasch
[3568]	30	! bugifx: calculate equation of state for seawater even if salinity is switched
	31	! off
	32	!
	33	! 3421 2018-10-24 18:39:32Z gronemeier
[3421]	34	! Renamed output variables
	35	!
	36	! 3381 2018-10-19 13:09:06Z raasch
[3381]	37	! spin-up cooling for ocean surface implemented, see new parameter
	38	! surface_cooling_spinup_time
	39	!
	40	! 3311 2018-10-05 12:34:56Z raasch
[3311]	41	! check if ocean mode is used for invalid combinations
	42	!
	43	! 3303 2018-10-03 12:04:15Z raasch
[3303]	44	! salinity allowed to be switched off
	45	!
	46	! 3302 2018-10-03 02:39:40Z raasch
[3302]	47	! Craik Leibovich force (Stokes drift) + wave breaking effect added
	48	!
	49	! 3294 2018-10-01 02:37:10Z raasch
[3294]	50	! initial revision
	51	!
[3302]	52	!
[3294]	53	! Authors:
	54	! --------
	55	! @author Siegfried Raasch
	56	!
	57	! Description:
	58	! ------------
[3302]	59	!> This module contains relevant code for PALM's ocean mode, e.g. the
[3294]	60	!> prognostic equation for salinity, the equation of state for seawater,
[3302]	61	!> the Craik Leibovich force (Stokes force), and wave breaking effects
[3294]	62	!------------------------------------------------------------------------------!
	63	MODULE ocean_mod
	64
	65
	66	#if defined( __nopointer )
	67	USE arrays_3d, &
	68	ONLY: prho, rho_ocean, sa, sa_init, sa_p, tsa_m
	69	#else
	70	USE arrays_3d, &
	71	ONLY: prho, prho_1, rho_ocean, rho_1, sa, sa_init, sa_1, sa_2, sa_3, &
	72	sa_p, tsa_m
	73	#endif
	74
	75	USE control_parameters, &
	76	ONLY: atmos_ocean_sign, bottom_salinityflux, &
	77	constant_top_salinityflux, ocean_mode, top_salinityflux, &
	78	wall_salinityflux
	79
	80	USE kinds
	81
	82
	83	IMPLICIT NONE
	84
	85	CHARACTER (LEN=20) :: bc_sa_t = 'neumann' !< namelist parameter
	86
	87	INTEGER(iwp) :: ibc_sa_t !< integer flag for bc_sa_t
[3302]	88	INTEGER(iwp) :: iran_ocean = -1234567 !< random number used for wave breaking effects
[3294]	89
	90	INTEGER(iwp) :: sa_vertical_gradient_level_ind(10) = -9999 !< grid index values of sa_vertical_gradient_level(s)
	91
[3303]	92	LOGICAL :: salinity = .TRUE. !< switch for using salinity
[3302]	93	LOGICAL :: stokes_force = .FALSE. !< switch to switch on the Stokes force
	94	LOGICAL :: wave_breaking = .FALSE. !< switch to switch on wave breaking effects
[3381]	95	LOGICAL :: surface_cooling_switched_off = .FALSE. !< variable to check if surface heat flux has been switched off
[3294]	96
[3302]	97	REAL(wp) :: alpha_wave_breaking = 3.0_wp !< coefficient for wave breaking generated turbulence from Noh et al. (2004), JPO
[3294]	98	REAL(wp) :: prho_reference !< reference state of potential density at ocean surface
	99	REAL(wp) :: sa_surface = 35.0_wp !< surface salinity, namelist parameter
	100	REAL(wp) :: sa_vertical_gradient(10) = 0.0_wp !< namelist parameter
	101	REAL(wp) :: sa_vertical_gradient_level(10) = -999999.9_wp !< namelist parameter
[3302]	102	REAL(wp) :: stokes_waveheight = 0.0_wp !< wave height assumed for Stokes drift velocity
	103	REAL(wp) :: stokes_wavelength = 0.0_wp !< wavelength assumed for Stokes drift velocity
[3381]	104	REAL(wp) :: surface_cooling_spinup_time = 999999.9_wp !< time after which surface heat flux is switched off
[3302]	105	REAL(wp) :: timescale_wave_breaking !< time scale of random forcing
	106	REAL(wp) :: u_star_wave_breaking !< to store the absolute value of friction velocity at the ocean surface
[3294]	107
	108	REAL(wp), DIMENSION(12), PARAMETER :: nom = &
	109	(/ 9.9984085444849347D2, 7.3471625860981584D0, &
	110	-5.3211231792841769D-2, 3.6492439109814549D-4, &
	111	2.5880571023991390D0, -6.7168282786692354D-3, &
	112	1.9203202055760151D-3, 1.1798263740430364D-2, &
	113	9.8920219266399117D-8, 4.6996642771754730D-6, &
	114	-2.5862187075154352D-8, -3.2921414007960662D-12 /)
	115	!< constants used in equation of state for seawater
	116
	117	REAL(wp), DIMENSION(13), PARAMETER :: den = &
	118	(/ 1.0D0, 7.2815210113327091D-3, &
	119	-4.4787265461983921D-5, 3.3851002965802430D-7, &
	120	1.3651202389758572D-10, 1.7632126669040377D-3, &
	121	-8.8066583251206474D-6, -1.8832689434804897D-10, &
	122	5.7463776745432097D-6, 1.4716275472242334D-9, &
	123	6.7103246285651894D-6, -2.4461698007024582D-17, &
	124	-9.1534417604289062D-18 /)
	125	!< constants used in equation of state for seawater
	126
	127	SAVE
	128
[3302]	129	PUBLIC :: bc_sa_t, ibc_sa_t, prho_reference, sa_surface, &
[3294]	130	sa_vertical_gradient, sa_vertical_gradient_level, &
[3302]	131	sa_vertical_gradient_level_ind, stokes_force, wave_breaking
[3294]	132
	133
	134	INTERFACE eqn_state_seawater
	135	MODULE PROCEDURE eqn_state_seawater
	136	MODULE PROCEDURE eqn_state_seawater_ij
	137	END INTERFACE eqn_state_seawater
	138
	139	INTERFACE eqn_state_seawater_func
	140	MODULE PROCEDURE eqn_state_seawater_func
	141	END INTERFACE eqn_state_seawater_func
	142
	143	INTERFACE ocean_check_parameters
	144	MODULE PROCEDURE ocean_check_parameters
	145	END INTERFACE ocean_check_parameters
	146
	147	INTERFACE ocean_check_data_output
	148	MODULE PROCEDURE ocean_check_data_output
	149	END INTERFACE ocean_check_data_output
	150
	151	INTERFACE ocean_check_data_output_pr
	152	MODULE PROCEDURE ocean_check_data_output_pr
	153	END INTERFACE ocean_check_data_output_pr
	154
	155	INTERFACE ocean_define_netcdf_grid
	156	MODULE PROCEDURE ocean_define_netcdf_grid
	157	END INTERFACE ocean_define_netcdf_grid
	158
	159	INTERFACE ocean_data_output_2d
	160	MODULE PROCEDURE ocean_data_output_2d
	161	END INTERFACE ocean_data_output_2d
	162
	163	INTERFACE ocean_data_output_3d
	164	MODULE PROCEDURE ocean_data_output_3d
	165	END INTERFACE ocean_data_output_3d
	166
[3302]	167	INTERFACE ocean_header
	168	MODULE PROCEDURE ocean_header
	169	END INTERFACE ocean_header
	170
[3294]	171	INTERFACE ocean_init
	172	MODULE PROCEDURE ocean_init
	173	END INTERFACE ocean_init
	174
	175	INTERFACE ocean_init_arrays
	176	MODULE PROCEDURE ocean_init_arrays
	177	END INTERFACE ocean_init_arrays
	178
	179	INTERFACE ocean_parin
	180	MODULE PROCEDURE ocean_parin
	181	END INTERFACE ocean_parin
	182
	183	INTERFACE ocean_prognostic_equations
	184	MODULE PROCEDURE ocean_prognostic_equations
	185	MODULE PROCEDURE ocean_prognostic_equations_ij
	186	END INTERFACE ocean_prognostic_equations
	187
	188	INTERFACE ocean_swap_timelevel
	189	MODULE PROCEDURE ocean_swap_timelevel
	190	END INTERFACE ocean_swap_timelevel
	191
	192	INTERFACE ocean_rrd_global
	193	MODULE PROCEDURE ocean_rrd_global
	194	END INTERFACE ocean_rrd_global
	195
	196	INTERFACE ocean_rrd_local
	197	MODULE PROCEDURE ocean_rrd_local
	198	END INTERFACE ocean_rrd_local
	199
	200	INTERFACE ocean_wrd_global
	201	MODULE PROCEDURE ocean_wrd_global
	202	END INTERFACE ocean_wrd_global
	203
	204	INTERFACE ocean_wrd_local
	205	MODULE PROCEDURE ocean_wrd_local
	206	END INTERFACE ocean_wrd_local
	207
	208	INTERFACE ocean_3d_data_averaging
	209	MODULE PROCEDURE ocean_3d_data_averaging
	210	END INTERFACE ocean_3d_data_averaging
	211
[3302]	212	INTERFACE stokes_drift_terms
	213	MODULE PROCEDURE stokes_drift_terms
	214	MODULE PROCEDURE stokes_drift_terms_ij
	215	END INTERFACE stokes_drift_terms
[3294]	216
[3302]	217	INTERFACE wave_breaking_term
	218	MODULE PROCEDURE wave_breaking_term
	219	MODULE PROCEDURE wave_breaking_term_ij
	220	END INTERFACE wave_breaking_term
	221
[3294]	222	PRIVATE
	223	!
	224	!-- Add INTERFACES that must be available to other modules (alphabetical order)
	225	PUBLIC eqn_state_seawater, ocean_check_data_output, &
	226	ocean_check_data_output_pr, ocean_check_parameters, &
	227	ocean_data_output_2d, ocean_data_output_3d, &
[3302]	228	ocean_define_netcdf_grid, ocean_header, ocean_init, &
	229	ocean_init_arrays, ocean_parin, ocean_prognostic_equations, &
	230	ocean_swap_timelevel, ocean_rrd_global, ocean_rrd_local, &
	231	ocean_wrd_global, ocean_wrd_local, ocean_3d_data_averaging, &
	232	stokes_drift_terms, wave_breaking_term
[3294]	233
	234
	235	CONTAINS
	236
	237	!------------------------------------------------------------------------------!
	238	! Description:
	239	! ------------
	240	!> Equation of state for seawater as a function of potential temperature,
	241	!> salinity, and pressure.
	242	!> For coefficients see Jackett et al., 2006: J. Atm. Ocean Tech.
	243	!> eqn_state_seawater calculates the potential density referred at hyp(0).
	244	!> eqn_state_seawater_func calculates density.
	245	!> TODO: so far, routine is not adjusted to use topography
	246	!------------------------------------------------------------------------------!
	247	SUBROUTINE eqn_state_seawater
	248
	249	USE arrays_3d, &
	250	ONLY: hyp, prho, pt_p, rho_ocean, sa_p
	251	USE indices, &
	252	ONLY: nxl, nxr, nyn, nys, nzb, nzt
	253
	254	USE surface_mod, &
	255	ONLY : bc_h
	256
	257	IMPLICIT NONE
	258
	259	INTEGER(iwp) :: i !< running index x direction
	260	INTEGER(iwp) :: j !< running index y direction
	261	INTEGER(iwp) :: k !< running index z direction
	262	INTEGER(iwp) :: m !< running index surface elements
	263
	264	REAL(wp) :: pden !< temporary scalar user for calculating density
	265	REAL(wp) :: pnom !< temporary scalar user for calculating density
	266	REAL(wp) :: p1 !< temporary scalar user for calculating density
	267	REAL(wp) :: p2 !< temporary scalar user for calculating density
	268	REAL(wp) :: p3 !< temporary scalar user for calculating density
	269	REAL(wp) :: pt1 !< temporary scalar user for calculating density
	270	REAL(wp) :: pt2 !< temporary scalar user for calculating density
	271	REAL(wp) :: pt3 !< temporary scalar user for calculating density
	272	REAL(wp) :: pt4 !< temporary scalar user for calculating density
	273	REAL(wp) :: sa1 !< temporary scalar user for calculating density
	274	REAL(wp) :: sa15 !< temporary scalar user for calculating density
	275	REAL(wp) :: sa2 !< temporary scalar user for calculating density
	276
	277
	278	DO i = nxl, nxr
	279	DO j = nys, nyn
	280	DO k = nzb+1, nzt
	281	!
	282	!-- Pressure is needed in dbar
	283	p1 = hyp(k) * 1E-4_wp
	284	p2 = p1 * p1
	285	p3 = p2 * p1
	286
	287	!
	288	!-- Temperature needed in degree Celsius
	289	pt1 = pt_p(k,j,i) - 273.15_wp
	290	pt2 = pt1 * pt1
	291	pt3 = pt1 * pt2
	292	pt4 = pt2 * pt2
	293
	294	sa1 = sa_p(k,j,i)
	295	sa15 = sa1 * SQRT( sa1 )
	296	sa2 = sa1 * sa1
	297
	298	pnom = nom(1) + nom(2)pt1 + nom(3)pt2 + &
	299	nom(4)pt3 + nom(5)sa1 + nom(6)sa1pt1 + &
	300	nom(7)*sa2
	301
	302	pden = den(1) + den(2)pt1 + den(3)pt2 + &
	303	den(4)pt3 + den(5)pt4 + den(6)*sa1 + &
	304	den(7)sa1pt1 + den(8)sa1pt3 + den(9)*sa15 + &
	305	den(10)sa15pt2
	306	!
	307	!-- Potential density (without pressure terms)
	308	prho(k,j,i) = pnom / pden
	309
	310	pnom = pnom + nom(8)p1 + nom(9)p1*pt2 + &
	311	nom(10)p1sa1 + nom(11)p2 + nom(12)p2*pt2
	312
	313	pden = pden + den(11)p1 + den(12)p2*pt3 + &
	314	den(13)p3pt1
	315
	316	!
	317	!-- In-situ density
	318	rho_ocean(k,j,i) = pnom / pden
	319
	320	ENDDO
	321
	322	!
	323	!-- Neumann conditions are assumed at top boundary and currently also at
	324	!-- bottom boundary (see comment lines below)
	325	prho(nzt+1,j,i) = prho(nzt,j,i)
	326	rho_ocean(nzt+1,j,i) = rho_ocean(nzt,j,i)
	327
	328	ENDDO
	329	ENDDO
	330	!
	331	!-- Neumann conditions at up/downward-facing surfaces
	332	!$OMP PARALLEL DO PRIVATE( i, j, k )
	333	DO m = 1, bc_h(0)%ns
	334	i = bc_h(0)%i(m)
	335	j = bc_h(0)%j(m)
	336	k = bc_h(0)%k(m)
	337	prho(k-1,j,i) = prho(k,j,i)
	338	rho_ocean(k-1,j,i) = rho_ocean(k,j,i)
	339	ENDDO
	340	!
	341	!-- Downward facing surfaces
	342	!$OMP PARALLEL DO PRIVATE( i, j, k )
	343	DO m = 1, bc_h(1)%ns
	344	i = bc_h(1)%i(m)
	345	j = bc_h(1)%j(m)
	346	k = bc_h(1)%k(m)
	347	prho(k+1,j,i) = prho(k,j,i)
	348	rho_ocean(k+1,j,i) = rho_ocean(k,j,i)
	349	ENDDO
	350
	351	END SUBROUTINE eqn_state_seawater
	352
	353
	354	!------------------------------------------------------------------------------!
	355	! Description:
	356	! ------------
	357	!> Same as above, but for grid point i,j
	358	!------------------------------------------------------------------------------!
	359	SUBROUTINE eqn_state_seawater_ij( i, j )
	360
	361	USE arrays_3d, &
	362	ONLY: hyp, prho, pt_p, rho_ocean, sa_p
	363
	364	USE indices, &
	365	ONLY: nzb, nzt
	366
	367	USE surface_mod, &
	368	ONLY : bc_h
	369
	370	IMPLICIT NONE
	371
	372	INTEGER(iwp) :: i !< running index x direction
	373	INTEGER(iwp) :: j !< running index y direction
	374	INTEGER(iwp) :: k !< running index z direction
	375	INTEGER(iwp) :: m !< running index surface elements
	376	INTEGER(iwp) :: surf_e !< end index of surface elements at (j,i)-gridpoint
	377	INTEGER(iwp) :: surf_s !< start index of surface elements at (j,i)-gridpoint
	378
	379	REAL(wp) :: pden !< temporary scalar user for calculating density
	380	REAL(wp) :: pnom !< temporary scalar user for calculating density
	381	REAL(wp) :: p1 !< temporary scalar user for calculating density
	382	REAL(wp) :: p2 !< temporary scalar user for calculating density
	383	REAL(wp) :: p3 !< temporary scalar user for calculating density
	384	REAL(wp) :: pt1 !< temporary scalar user for calculating density
	385	REAL(wp) :: pt2 !< temporary scalar user for calculating density
	386	REAL(wp) :: pt3 !< temporary scalar user for calculating density
	387	REAL(wp) :: pt4 !< temporary scalar user for calculating density
	388	REAL(wp) :: sa1 !< temporary scalar user for calculating density
	389	REAL(wp) :: sa15 !< temporary scalar user for calculating density
	390	REAL(wp) :: sa2 !< temporary scalar user for calculating density
	391
	392	DO k = nzb+1, nzt
	393	!
	394	!-- Pressure is needed in dbar
	395	p1 = hyp(k) * 1E-4_wp
	396	p2 = p1 * p1
	397	p3 = p2 * p1
	398	!
	399	!-- Temperature needed in degree Celsius
	400	pt1 = pt_p(k,j,i) - 273.15_wp
	401	pt2 = pt1 * pt1
	402	pt3 = pt1 * pt2
	403	pt4 = pt2 * pt2
	404
	405	sa1 = sa_p(k,j,i)
	406	sa15 = sa1 * SQRT( sa1 )
	407	sa2 = sa1 * sa1
	408
	409	pnom = nom(1) + nom(2)pt1 + nom(3)pt2 + &
	410	nom(4)pt3 + nom(5)sa1 + nom(6)sa1pt1 + nom(7)*sa2
	411
	412	pden = den(1) + den(2)pt1 + den(3)pt2 + &
	413	den(4)pt3 + den(5)pt4 + den(6)*sa1 + &
	414	den(7)sa1pt1 + den(8)sa1pt3 + den(9)*sa15 + &
	415	den(10)sa15pt2
	416	!
	417	!-- Potential density (without pressure terms)
	418	prho(k,j,i) = pnom / pden
	419
	420	pnom = pnom + nom(8)p1 + nom(9)p1*pt2 + &
	421	nom(10)p1sa1 + nom(11)p2 + nom(12)p2*pt2
	422	pden = pden + den(11)p1 + den(12)p2*pt3 + &
	423	den(13)p3pt1
	424
	425	!
	426	!-- In-situ density
	427	rho_ocean(k,j,i) = pnom / pden
	428
	429	ENDDO
	430	!
	431	!-- Neumann conditions at up/downward-facing walls
	432	surf_s = bc_h(0)%start_index(j,i)
	433	surf_e = bc_h(0)%end_index(j,i)
	434	DO m = surf_s, surf_e
	435	k = bc_h(0)%k(m)
	436	prho(k-1,j,i) = prho(k,j,i)
	437	rho_ocean(k-1,j,i) = rho_ocean(k,j,i)
	438	ENDDO
	439	!
	440	!-- Downward facing surfaces
	441	surf_s = bc_h(1)%start_index(j,i)
	442	surf_e = bc_h(1)%end_index(j,i)
	443	DO m = surf_s, surf_e
	444	k = bc_h(1)%k(m)
	445	prho(k+1,j,i) = prho(k,j,i)
	446	rho_ocean(k+1,j,i) = rho_ocean(k,j,i)
	447	ENDDO
	448	!
	449	!-- Neumann condition are assumed at top boundary
	450	prho(nzt+1,j,i) = prho(nzt,j,i)
	451	rho_ocean(nzt+1,j,i) = rho_ocean(nzt,j,i)
	452
	453	END SUBROUTINE eqn_state_seawater_ij
	454
	455
	456	!------------------------------------------------------------------------------!
	457	! Description:
	458	! ------------
	459	!> Equation of state for seawater as a function
	460	!------------------------------------------------------------------------------!
	461	REAL(wp) FUNCTION eqn_state_seawater_func( p, pt, sa )
	462
	463	IMPLICIT NONE
	464
	465	REAL(wp) :: p !< temporary scalar user for calculating density
	466	REAL(wp) :: p1 !< temporary scalar user for calculating density
	467	REAL(wp) :: p2 !< temporary scalar user for calculating density
	468	REAL(wp) :: p3 !< temporary scalar user for calculating density
	469	REAL(wp) :: pt !< temporary scalar user for calculating density
	470	REAL(wp) :: pt1 !< temporary scalar user for calculating density
	471	REAL(wp) :: pt2 !< temporary scalar user for calculating density
	472	REAL(wp) :: pt3 !< temporary scalar user for calculating density
	473	REAL(wp) :: pt4 !< temporary scalar user for calculating density
	474	REAL(wp) :: sa !< temporary scalar user for calculating density
	475	REAL(wp) :: sa15 !< temporary scalar user for calculating density
	476	REAL(wp) :: sa2 !< temporary scalar user for calculating density
	477
	478	!
	479	!-- Pressure is needed in dbar
	480	p1 = p * 1.0E-4_wp
	481	p2 = p1 * p1
	482	p3 = p2 * p1
	483
	484	!
	485	!-- Temperature needed in degree Celsius
	486	pt1 = pt - 273.15_wp
	487	pt2 = pt1 * pt1
	488	pt3 = pt1 * pt2
	489	pt4 = pt2 * pt2
	490
	491	sa15 = sa * SQRT( sa )
	492	sa2 = sa * sa
	493
	494
	495	eqn_state_seawater_func = &
	496	( nom(1) + nom(2)pt1 + nom(3)pt2 + nom(4)*pt3 + &
	497	nom(5)sa + nom(6)sapt1 + nom(7)sa2 + nom(8)*p1 + &
	498	nom(9)p1pt2 + nom(10)p1sa + nom(11)p2 + nom(12)p2*pt2 &
	499	) / &
	500	( den(1) + den(2)pt1 + den(3)pt2 + den(4)*pt3 + &
	501	den(5)pt4 + den(6)sa + den(7)sapt1 + den(8)sapt3 + &
	502	den(9)sa15 + den(10)sa15pt2 + den(11)p1 + den(12)p2pt3 + &
	503	den(13)p3pt1 &
	504	)
	505
	506
	507	END FUNCTION eqn_state_seawater_func
	508
	509
	510	!------------------------------------------------------------------------------!
	511	! Description:
	512	! ------------
	513	!> Reads the ocean parameters namelist
	514	!------------------------------------------------------------------------------!
	515	SUBROUTINE ocean_parin
	516
	517	IMPLICIT NONE
	518
	519	CHARACTER (LEN=80) :: line !< dummy string that contains the current line of the parameter file
	520
	521
[3303]	522	NAMELIST /ocean_parameters/ bc_sa_t, bottom_salinityflux, salinity, &
	523	sa_surface, sa_vertical_gradient, sa_vertical_gradient_level, &
[3381]	524	stokes_waveheight, stokes_wavelength, surface_cooling_spinup_time,&
	525	top_salinityflux, wall_salinityflux, wave_breaking
[3294]	526
	527	!
	528	!-- Try to find the namelist
	529	REWIND ( 11 )
	530	line = ' '
	531	DO WHILE ( INDEX( line, '&ocean_parameters' ) == 0 )
	532	READ ( 11, '(A)', END=12 ) line
	533	ENDDO
	534	BACKSPACE ( 11 )
	535
	536	!
	537	!-- Read namelist
	538	READ ( 11, ocean_parameters, ERR = 10 )
	539	!
	540	!-- Set switch that enables PALM's ocean mode
	541	ocean_mode = .TRUE.
	542
	543	GOTO 12
	544
	545	10 BACKSPACE( 11 )
	546	READ( 11 , '(A)') line
	547	CALL parin_fail_message( 'ocean_parameters', line )
	548
	549	12 CONTINUE
	550
	551	END SUBROUTINE ocean_parin
	552
	553	!------------------------------------------------------------------------------!
	554	! Description:
	555	! ------------
	556	!> Check parameters routine for the ocean mode
	557	!------------------------------------------------------------------------------!
	558	SUBROUTINE ocean_check_parameters
	559
	560	USE control_parameters, &
[3311]	561	ONLY: coupling_char, coupling_mode, initializing_actions, &
	562	message_string, use_top_fluxes
[3294]	563
[3311]	564	USE pmc_interface, &
	565	ONLY: nested_run
	566
[3294]	567	IMPLICIT NONE
	568
	569
	570	!
[3311]	571	!-- Check for invalid combinations
	572	IF ( nested_run ) THEN
	573	message_string = 'ocean mode not allowed for nesting'
	574	CALL message( 'ocean_check_parameters', 'PA0510', 1, 2, 0, 6, 0 )
	575	ENDIF
	576
	577	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	578	message_string = 'ocean mode does not allow cyclic-fill initialization'
	579	CALL message( 'ocean_check_parameters', 'PA0511', 1, 2, 0, 6, 0 )
	580	ENDIF
	581
	582	!
[3294]	583	!-- Check ocean setting
	584	IF ( TRIM( coupling_mode ) == 'uncoupled' .AND. &
	585	TRIM( coupling_char ) == '_O' .AND. &
	586	.NOT. ocean_mode ) THEN
	587
	588	!
	589	!-- Check whether an (uncoupled) atmospheric run has been declared as an
	590	!-- ocean run (this setting is done via palmrun-option -y)
[3311]	591	message_string = 'ocean mode does not allow coupling_char = "' // &
[3294]	592	TRIM( coupling_char ) // '" set by palmrun-option "-y"'
[3311]	593	CALL message( 'ocean_check_parameters', 'PA0317', 1, 2, 0, 6, 0 )
[3294]	594
	595	ENDIF
	596
	597	!
	598	!-- Ocean version must use flux boundary conditions at the top
	599	IF ( .NOT. use_top_fluxes ) THEN
	600	message_string = 'use_top_fluxes must be .TRUE. in ocean mode'
	601	CALL message( 'ocean_check_parameters', 'PA0042', 1, 2, 0, 6, 0 )
	602	ENDIF
	603
	604	!
	605	!-- Boundary conditions for salinity
	606	IF ( bc_sa_t == 'dirichlet' ) THEN
	607	ibc_sa_t = 0
	608	ELSEIF ( bc_sa_t == 'neumann' ) THEN
	609	ibc_sa_t = 1
	610	ELSE
	611	message_string = 'unknown boundary condition: bc_sa_t = "' // &
	612	TRIM( bc_sa_t ) // '"'
	613	CALL message( 'ocean_check_parameters', 'PA0068', 1, 2, 0, 6, 0 )
	614	ENDIF
	615
	616	IF ( top_salinityflux == 9999999.9_wp ) constant_top_salinityflux = .FALSE.
	617
[3303]	618	IF ( .NOT. salinity ) THEN
	619	IF ( ( bottom_salinityflux /= 0.0_wp .AND. &
	620	bottom_salinityflux /= 9999999.9_wp ) .OR. &
	621	( top_salinityflux /= 0.0_wp .AND. &
	622	top_salinityflux /= 9999999.9_wp ) ) &
	623	THEN
	624	message_string = 'salinityflux must not be set for ocean run ' // &
	625	'without salinity'
[3311]	626	CALL message( 'ocean_check_parameters', 'PA0509', 1, 2, 0, 6, 0 )
[3303]	627	ENDIF
	628	ENDIF
	629
[3294]	630	IF ( ibc_sa_t == 1 .AND. top_salinityflux == 9999999.9_wp ) THEN
	631	message_string = 'boundary condition: bc_sa_t = "' // &
	632	TRIM( bc_sa_t ) // '" requires to set top_salinityflux'
	633	CALL message( 'ocean_check_parameters', 'PA0069', 1, 2, 0, 6, 0 )
	634	ENDIF
	635
	636	!
	637	!-- A fixed salinity at the top implies Dirichlet boundary condition for
	638	!-- salinity. In this case specification of a constant salinity flux is
	639	!-- forbidden.
	640	IF ( ibc_sa_t == 0 .AND. constant_top_salinityflux .AND. &
	641	top_salinityflux /= 0.0_wp ) THEN
	642	message_string = 'boundary condition: bc_sa_t = "' // &
	643	TRIM( bc_sa_t ) // '" is not allowed with ' // &
	644	'top_salinityflux /= 0.0'
	645	CALL message( 'ocean_check_parameters', 'PA0070', 1, 2, 0, 6, 0 )
	646	ENDIF
	647
[3302]	648	!
	649	!-- Check if Stokes force is to be used
	650	IF ( stokes_waveheight /= 0.0_wp .AND. stokes_wavelength /= 0.0_wp ) THEN
	651	stokes_force = .TRUE.
	652	ELSE
	653	IF ( ( stokes_waveheight <= 0.0_wp .AND. stokes_wavelength > 0.0_wp ) &
	654	.OR. &
	655	( stokes_waveheight > 0.0_wp .AND. stokes_wavelength <= 0.0_wp ) &
	656	.OR. &
	657	( stokes_waveheight < 0.0_wp .AND. stokes_wavelength < 0.0_wp ) ) &
	658	THEN
	659	message_string = 'wrong settings for stokes_wavelength and/or ' // &
	660	'stokes_waveheight'
	661	CALL message( 'ocean_check_parameters', 'PA0460', 1, 2, 0, 6, 0 )
	662	ENDIF
	663	ENDIF
	664
[3294]	665	END SUBROUTINE ocean_check_parameters
	666
	667
	668	!------------------------------------------------------------------------------!
	669	! Description:
	670	! ------------
	671	!> Check data output.
	672	!------------------------------------------------------------------------------!
	673	SUBROUTINE ocean_check_data_output( var, unit )
	674
	675	IMPLICIT NONE
	676
	677	CHARACTER (LEN=*) :: unit !< unit of output variable
	678	CHARACTER (LEN=*) :: var !< name of output variable
	679
	680
	681	SELECT CASE ( TRIM( var ) )
	682
[3421]	683	CASE ( 'rho_sea_water' )
[3294]	684	unit = 'kg/m3'
	685
	686	CASE ( 'sa' )
	687	unit = 'psu'
	688
	689	CASE DEFAULT
	690	unit = 'illegal'
	691
	692	END SELECT
	693
	694	END SUBROUTINE ocean_check_data_output
	695
	696
	697	!------------------------------------------------------------------------------!
	698	! Description:
	699	! ------------
	700	!> Check data output of profiles
	701	!------------------------------------------------------------------------------!
	702	SUBROUTINE ocean_check_data_output_pr( variable, var_count, unit, dopr_unit )
	703
	704	USE arrays_3d, &
	705	ONLY: zu, zw
	706
	707	USE control_parameters, &
[3614]	708	ONLY: data_output_pr
[3294]	709
	710	USE indices
	711
	712	USE profil_parameter
	713
	714	USE statistics
	715
	716	IMPLICIT NONE
	717
	718	CHARACTER (LEN=*) :: unit !<
	719	CHARACTER (LEN=*) :: variable !<
	720	CHARACTER (LEN=*) :: dopr_unit !< local value of dopr_unit
	721
	722	INTEGER(iwp) :: var_count !<
	723
	724	SELECT CASE ( TRIM( variable ) )
	725
	726	CASE ( 'prho' )
	727	dopr_index(var_count) = 71
	728	dopr_unit = 'kg/m3'
	729	hom(:,2,71,:) = SPREAD( zu, 2, statistic_regions+1 )
	730	unit = dopr_unit
	731
[3421]	732	CASE ( 'rho_sea_water' )
[3294]	733	dopr_index(var_count) = 64
	734	dopr_unit = 'kg/m3'
	735	hom(:,2,64,:) = SPREAD( zu, 2, statistic_regions+1 )
	736	IF ( data_output_pr(var_count)(1:1) == '#' ) THEN
	737	dopr_initial_index(var_count) = 77
	738	hom(:,2,77,:) = SPREAD( zu, 2, statistic_regions+1 )
	739	hom(nzb,2,77,:) = 0.0_wp ! because zu(nzb) is negative
	740	data_output_pr(var_count) = data_output_pr(var_count)(2:)
	741	ENDIF
	742	unit = dopr_unit
	743
	744	CASE ( 'sa', '#sa' )
	745	dopr_index(var_count) = 23
	746	dopr_unit = 'psu'
	747	hom(:,2,23,:) = SPREAD( zu, 2, statistic_regions+1 )
	748	IF ( data_output_pr(var_count)(1:1) == '#' ) THEN
	749	dopr_initial_index(var_count) = 26
	750	hom(:,2,26,:) = SPREAD( zu, 2, statistic_regions+1 )
	751	hom(nzb,2,26,:) = 0.0_wp ! because zu(nzb) is negative
	752	data_output_pr(var_count) = data_output_pr(var_count)(2:)
	753	ENDIF
	754	unit = dopr_unit
	755
	756	CASE ( 'w"sa"' )
	757	dopr_index(var_count) = 65
	758	dopr_unit = 'psu m/s'
	759	hom(:,2,65,:) = SPREAD( zw, 2, statistic_regions+1 )
	760	unit = dopr_unit
	761
	762	CASE ( 'wsa' )
	763	dopr_index(var_count) = 66
	764	dopr_unit = 'psu m/s'
	765	hom(:,2,66,:) = SPREAD( zw, 2, statistic_regions+1 )
	766	unit = dopr_unit
	767
	768	CASE ( 'wsa' )
	769	dopr_index(var_count) = 67
	770	dopr_unit = 'psu m/s'
	771	hom(:,2,67,:) = SPREAD( zw, 2, statistic_regions+1 )
	772	unit = dopr_unit
	773
	774	CASE DEFAULT
	775	unit = 'illegal'
	776
	777	END SELECT
	778
	779
	780	END SUBROUTINE ocean_check_data_output_pr
	781
	782
	783	!------------------------------------------------------------------------------!
	784	! Description:
	785	! ------------
	786	!> Define appropriate grid for netcdf variables.
	787	!> It is called out from subroutine netcdf.
	788	!------------------------------------------------------------------------------!
	789	SUBROUTINE ocean_define_netcdf_grid( var, found, grid_x, grid_y, grid_z )
	790
	791	IMPLICIT NONE
	792
	793	CHARACTER (LEN=*), INTENT(OUT) :: grid_x !< x grid of output variable
	794	CHARACTER (LEN=*), INTENT(OUT) :: grid_y !< y grid of output variable
	795	CHARACTER (LEN=*), INTENT(OUT) :: grid_z !< z grid of output variable
	796	CHARACTER (LEN=*), INTENT(IN) :: var !< name of output variable
	797
	798	LOGICAL, INTENT(OUT) :: found !< flag if output variable is found
	799
	800	found = .TRUE.
	801
	802	!
	803	!-- Check for the grid
	804	SELECT CASE ( TRIM( var ) )
	805
[3421]	806	CASE ( 'rho_sea_water', 'rho_sea_water_xy', 'rho_sea_water_xz', &
	807	'rho_sea_water_yz', 'sa', 'sa_xy', 'sa_xz', 'sa_yz' )
[3294]	808	grid_x = 'x'
	809	grid_y = 'y'
	810	grid_z = 'zu'
	811
	812	CASE DEFAULT
	813	found = .FALSE.
	814	grid_x = 'none'
	815	grid_y = 'none'
	816	grid_z = 'none'
	817
	818	END SELECT
	819
	820	END SUBROUTINE ocean_define_netcdf_grid
	821
	822
	823	!------------------------------------------------------------------------------!
	824	! Description:
	825	! ------------
	826	!> Average 3D data.
	827	!------------------------------------------------------------------------------!
	828	SUBROUTINE ocean_3d_data_averaging( mode, variable )
	829
	830
	831	USE arrays_3d, &
	832	ONLY: rho_ocean, sa
	833
	834	USE averaging, &
	835	ONLY: rho_ocean_av, sa_av
	836
	837	USE control_parameters, &
	838	ONLY: average_count_3d
	839
	840	USE indices, &
	841	ONLY: nxlg, nxrg, nyng, nysg, nzb, nzt
	842
	843	IMPLICIT NONE
	844
	845	CHARACTER (LEN=*) :: mode !< flag defining mode 'allocate', 'sum' or 'average'
	846	CHARACTER (LEN=*) :: variable !< name of variable
	847
	848	INTEGER(iwp) :: i !< loop index
	849	INTEGER(iwp) :: j !< loop index
	850	INTEGER(iwp) :: k !< loop index
	851
	852	IF ( mode == 'allocate' ) THEN
	853
	854	SELECT CASE ( TRIM( variable ) )
	855
[3421]	856	CASE ( 'rho_sea_water' )
[3294]	857	IF ( .NOT. ALLOCATED( rho_ocean_av ) ) THEN
	858	ALLOCATE( rho_ocean_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	859	ENDIF
	860	rho_ocean_av = 0.0_wp
	861
	862	CASE ( 'sa' )
	863	IF ( .NOT. ALLOCATED( sa_av ) ) THEN
	864	ALLOCATE( sa_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	865	ENDIF
	866	sa_av = 0.0_wp
	867
	868	CASE DEFAULT
	869	CONTINUE
	870
	871	END SELECT
	872
	873	ELSEIF ( mode == 'sum' ) THEN
	874
	875	SELECT CASE ( TRIM( variable ) )
	876
[3421]	877	CASE ( 'rho_sea_water' )
[3294]	878	IF ( ALLOCATED( rho_ocean_av ) ) THEN
	879	DO i = nxlg, nxrg
	880	DO j = nysg, nyng
	881	DO k = nzb, nzt+1
	882	rho_ocean_av(k,j,i) = rho_ocean_av(k,j,i) + &
	883	rho_ocean(k,j,i)
	884	ENDDO
	885	ENDDO
	886	ENDDO
	887	ENDIF
	888
	889	CASE ( 'sa' )
	890	IF ( ALLOCATED( sa_av ) ) THEN
	891	DO i = nxlg, nxrg
	892	DO j = nysg, nyng
	893	DO k = nzb, nzt+1
	894	sa_av(k,j,i) = sa_av(k,j,i) + sa(k,j,i)
	895	ENDDO
	896	ENDDO
	897	ENDDO
	898	ENDIF
	899
	900	CASE DEFAULT
	901	CONTINUE
	902
	903	END SELECT
	904
	905	ELSEIF ( mode == 'average' ) THEN
	906
	907	SELECT CASE ( TRIM( variable ) )
	908
[3421]	909	CASE ( 'rho_sea_water' )
[3294]	910	IF ( ALLOCATED( rho_ocean_av ) ) THEN
	911	DO i = nxlg, nxrg
	912	DO j = nysg, nyng
	913	DO k = nzb, nzt+1
	914	rho_ocean_av(k,j,i) = rho_ocean_av(k,j,i) / &
	915	REAL( average_count_3d, KIND=wp )
	916	ENDDO
	917	ENDDO
	918	ENDDO
	919	ENDIF
	920
	921	CASE ( 'sa' )
	922	IF ( ALLOCATED( sa_av ) ) THEN
	923	DO i = nxlg, nxrg
	924	DO j = nysg, nyng
	925	DO k = nzb, nzt+1
	926	sa_av(k,j,i) = sa_av(k,j,i) / &
	927	REAL( average_count_3d, KIND=wp )
	928	ENDDO
	929	ENDDO
	930	ENDDO
	931	ENDIF
	932
	933	END SELECT
	934
	935	ENDIF
	936
	937	END SUBROUTINE ocean_3d_data_averaging
	938
	939
	940	!------------------------------------------------------------------------------!
	941	! Description:
	942	! ------------
	943	!> Define 2D output variables.
	944	!------------------------------------------------------------------------------!
	945	SUBROUTINE ocean_data_output_2d( av, variable, found, grid, mode, local_pf, &
	946	nzb_do, nzt_do )
	947
	948	USE arrays_3d, &
	949	ONLY: rho_ocean, sa
	950
	951	USE averaging, &
	952	ONLY: rho_ocean_av, sa_av
	953
	954	USE indices, &
[3303]	955	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt, &
	956	wall_flags_0
[3294]	957
	958	IMPLICIT NONE
	959
	960	CHARACTER (LEN=*) :: grid !< name of vertical grid
	961	CHARACTER (LEN=*) :: mode !< either 'xy', 'xz' or 'yz'
	962	CHARACTER (LEN=*) :: variable !< name of variable
	963
	964	INTEGER(iwp) :: av !< flag for (non-)average output
	965	INTEGER(iwp) :: flag_nr !< number of masking flag
	966	INTEGER(iwp) :: i !< loop index
	967	INTEGER(iwp) :: j !< loop index
	968	INTEGER(iwp) :: k !< loop index
	969	INTEGER(iwp) :: nzb_do !< vertical output index (bottom)
	970	INTEGER(iwp) :: nzt_do !< vertical output index (top)
	971
	972	LOGICAL :: found !< flag if output variable is found
	973	LOGICAL :: resorted !< flag if output is already resorted
	974
	975	REAL(wp) :: fill_value = -999.0_wp !< value for the _FillValue attribute
	976
	977	REAL(wp), DIMENSION(nxl:nxr,nys:nyn,nzb_do:nzt_do) :: local_pf !< local
	978	!< array to which output data is resorted to
	979
	980	REAL(wp), DIMENSION(:,:,:), POINTER :: to_be_resorted !< points to selected output variable
	981
	982	found = .TRUE.
	983	resorted = .FALSE.
	984	!
	985	!-- Set masking flag for topography for not resorted arrays
	986	flag_nr = 0
	987
	988	SELECT CASE ( TRIM( variable ) )
	989
[3421]	990	CASE ( 'rho_sea_water_xy', 'rho_sea_water_xz', 'rho_sea_water_yz' )
[3294]	991	IF ( av == 0 ) THEN
	992	to_be_resorted => rho_ocean
	993	ELSE
	994	IF ( .NOT. ALLOCATED( rho_ocean_av ) ) THEN
	995	ALLOCATE( rho_ocean_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	996	rho_ocean_av = REAL( fill_value, KIND = wp )
	997	ENDIF
	998	to_be_resorted => rho_ocean_av
	999	ENDIF
	1000
	1001	CASE ( 'sa_xy', 'sa_xz', 'sa_yz' )
	1002	IF ( av == 0 ) THEN
	1003	to_be_resorted => sa
	1004	ELSE
	1005	IF ( .NOT. ALLOCATED( sa_av ) ) THEN
	1006	ALLOCATE( sa_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1007	sa_av = REAL( fill_value, KIND = wp )
	1008	ENDIF
	1009	to_be_resorted => sa_av
	1010	ENDIF
	1011	IF ( mode == 'xy' ) grid = 'zu'
	1012
	1013	CASE DEFAULT
	1014	found = .FALSE.
	1015	grid = 'none'
	1016
	1017	END SELECT
	1018
	1019	IF ( found .AND. .NOT. resorted ) THEN
[3303]	1020	DO i = nxl, nxr
	1021	DO j = nys, nyn
	1022	DO k = nzb_do, nzt_do
	1023	local_pf(i,j,k) = MERGE( to_be_resorted(k,j,i), &
	1024	REAL( fill_value, KIND = wp ), &
	1025	BTEST( wall_flags_0(k,j,i), flag_nr ) )
	1026	ENDDO
	1027	ENDDO
	1028	ENDDO
	1029	resorted = .TRUE.
[3294]	1030	ENDIF
	1031
	1032	END SUBROUTINE ocean_data_output_2d
	1033
	1034
	1035	!------------------------------------------------------------------------------!
	1036	! Description:
	1037	! ------------
	1038	!> Define 3D output variables.
	1039	!------------------------------------------------------------------------------!
	1040	SUBROUTINE ocean_data_output_3d( av, variable, found, local_pf, nzb_do, nzt_do )
	1041
	1042
	1043	USE arrays_3d, &
	1044	ONLY: rho_ocean, sa
	1045
	1046	USE averaging, &
	1047	ONLY: rho_ocean_av, sa_av
	1048
	1049	USE indices, &
	1050	ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt, &
	1051	wall_flags_0
	1052
	1053	IMPLICIT NONE
	1054
	1055	CHARACTER (LEN=*) :: variable !< name of variable
	1056
	1057	INTEGER(iwp) :: av !< flag for (non-)average output
	1058	INTEGER(iwp) :: flag_nr !< number of masking flag
	1059	INTEGER(iwp) :: i !< loop index
	1060	INTEGER(iwp) :: j !< loop index
	1061	INTEGER(iwp) :: k !< loop index
	1062	INTEGER(iwp) :: nzb_do !< lower limit of the data output (usually 0)
	1063	INTEGER(iwp) :: nzt_do !< vertical upper limit of the data output (usually nz_do3d)
	1064
	1065	LOGICAL :: found !< flag if output variable is found
	1066	LOGICAL :: resorted !< flag if output is already resorted
	1067
	1068	REAL(wp) :: fill_value = -999.0_wp !< value for the _FillValue attribute
	1069
	1070	REAL(sp), DIMENSION(nxl:nxr,nys:nyn,nzb_do:nzt_do) :: local_pf !< local
	1071	!< array to which output data is resorted to
	1072
	1073	REAL(wp), DIMENSION(:,:,:), POINTER :: to_be_resorted !< points to selected output variable
	1074
	1075	found = .TRUE.
	1076	resorted = .FALSE.
	1077	!
	1078	!-- Set masking flag for topography for not resorted arrays
	1079	flag_nr = 0
	1080
	1081	SELECT CASE ( TRIM( variable ) )
	1082
[3421]	1083	CASE ( 'rho_sea_water' )
[3294]	1084	IF ( av == 0 ) THEN
	1085	to_be_resorted => rho_ocean
	1086	ELSE
	1087	IF ( .NOT. ALLOCATED( rho_ocean_av ) ) THEN
	1088	ALLOCATE( rho_ocean_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1089	rho_ocean_av = REAL( fill_value, KIND = wp )
	1090	ENDIF
	1091	to_be_resorted => rho_ocean_av
	1092	ENDIF
	1093
	1094	CASE ( 'sa' )
	1095	IF ( av == 0 ) THEN
	1096	to_be_resorted => sa
	1097	ELSE
	1098	IF ( .NOT. ALLOCATED( sa_av ) ) THEN
	1099	ALLOCATE( sa_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1100	sa_av = REAL( fill_value, KIND = wp )
	1101	ENDIF
	1102	to_be_resorted => sa_av
	1103	ENDIF
	1104
	1105	CASE DEFAULT
	1106	found = .FALSE.
	1107
	1108	END SELECT
	1109
	1110
	1111	IF ( found .AND. .NOT. resorted ) THEN
	1112	DO i = nxl, nxr
	1113	DO j = nys, nyn
	1114	DO k = nzb_do, nzt_do
[3303]	1115	local_pf(i,j,k) = MERGE( to_be_resorted(k,j,i), &
	1116	REAL( fill_value, KIND = wp ), &
	1117	BTEST( wall_flags_0(k,j,i), flag_nr ) )
[3294]	1118	ENDDO
	1119	ENDDO
	1120	ENDDO
	1121	resorted = .TRUE.
	1122	ENDIF
	1123
	1124	END SUBROUTINE ocean_data_output_3d
	1125
	1126
	1127	!------------------------------------------------------------------------------!
	1128	! Description:
	1129	! ------------
[3302]	1130	!> Header output for ocean parameters
	1131	!------------------------------------------------------------------------------!
	1132	SUBROUTINE ocean_header( io )
	1133
	1134
	1135	IMPLICIT NONE
	1136
	1137	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
	1138
	1139	!
	1140	!-- Write ocean header
	1141	WRITE( io, 1 )
	1142	IF ( stokes_force ) WRITE( io, 2 ) stokes_waveheight, stokes_wavelength
	1143	IF ( wave_breaking ) THEN
	1144	WRITE( io, 3 ) alpha_wave_breaking, timescale_wave_breaking
	1145	ENDIF
[3303]	1146	IF ( .NOT. salinity ) WRITE( io, 4 )
[3381]	1147	IF ( surface_cooling_spinup_time /= 999999.9_wp ) THEN
	1148	WRITE( io, 5 ) surface_cooling_spinup_time
	1149	ENDIF
[3302]	1150
	1151	1 FORMAT (//' Ocean settings:'/ &
	1152	' ------------------------------------------'/)
	1153	2 FORMAT (' --> Craik-Leibovich vortex force and Stokes drift switched', &
	1154	' on'/ &
	1155	' waveheight: ',F4.1,' m wavelength: ',F6.1,' m')
	1156	3 FORMAT (' --> wave breaking generated turbulence switched on'/ &
	1157	' alpha: ',F4.1/ &
	1158	' timescale:',F5.1,' s')
[3303]	1159	4 FORMAT (' --> prognostic salinity equation is switched off' )
[3381]	1160	5 FORMAT (' --> surface heat flux is switched off after ',F8.1,' s')
[3302]	1161
	1162	END SUBROUTINE ocean_header
	1163
	1164
	1165	!------------------------------------------------------------------------------!
	1166	! Description:
	1167	! ------------
[3294]	1168	!> Allocate arrays and assign pointers.
	1169	!------------------------------------------------------------------------------!
	1170	SUBROUTINE ocean_init_arrays
	1171
	1172	USE indices, &
	1173	ONLY: nxlg, nxrg, nyng, nysg, nzb, nzt
	1174
	1175	IMPLICIT NONE
	1176
	1177	#if defined( __nopointer )
[3303]	1178	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	1179	rho_ocean(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	1180	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	1181	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[3294]	1182	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1183	#else
[3303]	1184	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	1185	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	1186	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[3294]	1187	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1188
[3303]	1189	IF ( salinity ) THEN
	1190	ALLOCATE( sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1191	ENDIF
	1192
[3294]	1193	prho => prho_1
	1194	rho_ocean => rho_1 ! routines calc_mean_profile and diffusion_e require
	1195	! density to be a pointer
	1196	#endif
	1197
	1198	#if ! defined( __nopointer )
	1199	!
	1200	!-- Initial assignment of pointers
[3303]	1201	IF ( salinity ) THEN
	1202	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
	1203	ELSE
	1204	sa => sa_1; sa_p => sa_1; tsa_m => sa_3
	1205	ENDIF
[3294]	1206	#endif
	1207
	1208	END SUBROUTINE ocean_init_arrays
	1209
	1210
	1211	!------------------------------------------------------------------------------!
	1212	! Description:
	1213	! ------------
	1214	!> Initialization of quantities needed for the ocean mode
	1215	!------------------------------------------------------------------------------!
	1216	SUBROUTINE ocean_init
	1217
	1218
	1219	USE arrays_3d, &
[3302]	1220	ONLY: dzu, dzw, hyp, pt_init, ref_state, u_stokes_zu, u_stokes_zw, &
	1221	v_stokes_zu, v_stokes_zw, zu, zw
[3294]	1222
	1223	USE basic_constants_and_equations_mod, &
	1224	ONLY: g
	1225
[3302]	1226	USE basic_constants_and_equations_mod, &
	1227	ONLY: pi
	1228
[3294]	1229	USE control_parameters, &
	1230	ONLY: initializing_actions, molecular_viscosity, rho_surface, &
[3302]	1231	rho_reference, surface_pressure, top_momentumflux_u, &
	1232	top_momentumflux_v, use_single_reference_value
[3294]	1233
	1234	USE indices, &
	1235	ONLY: nxl, nxlg, nxrg, nyng, nys, nysg, nzb, nzt
	1236
	1237	USE kinds
	1238
[3302]	1239	USE pegrid, &
	1240	ONLY: myid
[3294]	1241
	1242	USE statistics, &
	1243	ONLY: hom, statistic_regions
	1244
	1245	IMPLICIT NONE
	1246
	1247	INTEGER(iwp) :: i !< loop index
	1248	INTEGER(iwp) :: j !< loop index
	1249	INTEGER(iwp) :: k !< loop index
	1250	INTEGER(iwp) :: n !< loop index
	1251
[3302]	1252	REAL(wp) :: alpha !< angle of surface stress
	1253	REAL(wp) :: dum !< dummy argument
	1254	REAL(wp) :: pt_l !< local scalar for pt used in equation of state function
	1255	REAL(wp) :: sa_l !< local scalar for sa used in equation of state function
	1256	REAL(wp) :: velocity_amplitude !< local scalar for amplitude of Stokes drift velocity
	1257	REAL(wp) :: x !< temporary variable to store surface stress along x
	1258	REAL(wp) :: y !< temporary variable to store surface stress along y
[3294]	1259
	1260	REAL(wp), DIMENSION(nzb:nzt+1) :: rho_ocean_init !< local array for initial density
	1261
	1262	ALLOCATE( hyp(nzb:nzt+1) )
	1263
	1264
	1265	!
	1266	!-- In case of no restart run, calculate the inital salinity profilevcusing the
	1267	!-- given salinity gradients
	1268	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	1269
	1270	sa_init = sa_surface
	1271	!
	1272	!-- Last arguments gives back the gradient at top level to be used as
	1273	!-- possible Neumann boundary condition. This is not realized for the ocean
	1274	!-- mode, therefore a dummy argument is used.
[3303]	1275	IF ( salinity ) THEN
	1276	CALL init_vertical_profiles( sa_vertical_gradient_level_ind, &
	1277	sa_vertical_gradient_level, &
	1278	sa_vertical_gradient, sa_init, &
	1279	sa_surface, dum )
	1280	ENDIF
[3294]	1281	ENDIF
	1282
	1283	!
	1284	!-- Initialize required 3d-arrays
	1285	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
	1286	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
	1287	!
	1288	!-- Initialization via computed 1D-model profiles
	1289	IF ( INDEX( initializing_actions, 'set_constant_profiles' ) /= 0 ) THEN
	1290
	1291	DO i = nxlg, nxrg
	1292	DO j = nysg, nyng
	1293	sa(:,j,i) = sa_init
	1294	ENDDO
	1295	ENDDO
	1296
	1297	ENDIF
	1298	!
	1299	!-- Store initial profiles for output purposes etc.
	1300	!-- Store initial salinity profile
	1301	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
	1302	!
	1303	!-- Initialize old and new time levels.
	1304	tsa_m = 0.0_wp
	1305	sa_p = sa
	1306
	1307	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' ) THEN
	1308
	1309	!
	1310	!-- Initialize new time levels (only done in order to set boundary values
	1311	!-- including ghost points)
	1312	sa_p = sa
	1313	!
	1314	!-- Allthough tendency arrays are set in prognostic_equations, they have
	1315	!-- have to be predefined here because they are used (but multiplied with 0)
	1316	!-- there before they are set.
	1317	tsa_m = 0.0_wp
	1318
	1319	ENDIF
	1320
	1321	!
	1322	!-- Set water density near the ocean surface
	1323	rho_surface = 1027.62_wp
	1324
	1325	!
	1326	!-- Set kinematic viscosity to sea water at 20C.
	1327	!-- This changes the default value that is given for air!
	1328	molecular_viscosity = 1.05E-6_wp
	1329
	1330	!
	1331	!-- Change sign of buoyancy/stability terms because density gradient is used
	1332	!-- instead of the potential temperature gradient to calculate the buoyancy
	1333	atmos_ocean_sign = -1.0_wp
	1334
	1335	!
	1336	!-- Calculate initial vertical profile of hydrostatic pressure (in Pa)
	1337	!-- and the reference density (used later in buoyancy term)
	1338	!-- First step: Calculate pressure using reference density
	1339	hyp(nzt+1) = surface_pressure * 100.0_wp
	1340	hyp(nzt) = hyp(nzt+1) + rho_surface * g * 0.5_wp * dzu(nzt+1)
	1341	rho_ocean_init(nzt) = rho_surface
	1342	rho_ocean_init(nzt+1) = rho_surface ! only required for output
	1343
	1344	DO k = nzt-1, 1, -1
	1345	hyp(k) = hyp(k+1) + rho_surface * g * dzu(k)
	1346	ENDDO
	1347	hyp(0) = hyp(1) + rho_surface * g * dzu(1)
	1348
	1349	!
	1350	!-- Second step: Iteratively calculate in situ density (based on presssure)
	1351	!-- and pressure (based on in situ density)
	1352	DO n = 1, 5
	1353
	1354	rho_reference = rho_surface * 0.5_wp * dzu(nzt+1)
	1355
	1356	DO k = nzt, 0, -1
	1357
	1358	sa_l = 0.5_wp * ( sa_init(k) + sa_init(k+1) )
	1359	pt_l = 0.5_wp * ( pt_init(k) + pt_init(k+1) )
	1360
	1361	rho_ocean_init(k) = eqn_state_seawater_func( hyp(k), pt_l, sa_l )
	1362
	1363	rho_reference = rho_reference + rho_ocean_init(k) * dzu(k+1)
	1364
	1365	ENDDO
	1366
	1367	rho_reference = rho_reference / ( zw(nzt) - zu(nzb) )
	1368
	1369	hyp(nzt) = hyp(nzt+1) + rho_surface * g * 0.5_wp * dzu(nzt+1)
	1370	DO k = nzt-1, 0, -1
	1371	hyp(k) = hyp(k+1) + g * 0.5_wp * ( rho_ocean_init(k) &
	1372	+ rho_ocean_init(k+1) ) * dzu(k+1)
	1373	ENDDO
	1374
	1375	ENDDO
	1376
	1377	!
	1378	!-- Calculate the reference potential density
	1379	prho_reference = 0.0_wp
	1380	DO k = 0, nzt
	1381
	1382	sa_l = 0.5_wp * ( sa_init(k) + sa_init(k+1) )
	1383	pt_l = 0.5_wp * ( pt_init(k) + pt_init(k+1) )
	1384
	1385	prho_reference = prho_reference + dzu(k+1) * &
	1386	eqn_state_seawater_func( 0.0_wp, pt_l, sa_l )
	1387
	1388	ENDDO
	1389
	1390	prho_reference = prho_reference / ( zu(nzt) - zu(nzb) )
	1391
	1392	!
	1393	!-- Calculate the 3d array of initial in situ and potential density,
	1394	!-- based on the initial temperature and salinity profile
	1395	CALL eqn_state_seawater
	1396
	1397	!
	1398	!-- Store initial density profile
	1399	hom(:,1,77,:) = SPREAD( rho_ocean_init(:), 2, statistic_regions+1 )
	1400
	1401	!
	1402	!-- Set the reference state to be used in the buoyancy terms
	1403	IF ( use_single_reference_value ) THEN
	1404	ref_state(:) = rho_reference
	1405	ELSE
	1406	ref_state(:) = rho_ocean_init(:)
	1407	ENDIF
	1408
[3302]	1409	!
	1410	!-- Calculate the Stokes drift velocity profile
	1411	IF ( stokes_force ) THEN
[3294]	1412
[3302]	1413	!
	1414	!-- First, calculate angle of surface stress
	1415	x = -top_momentumflux_u
	1416	y = -top_momentumflux_v
	1417	IF ( x == 0.0_wp ) THEN
	1418	IF ( y > 0.0_wp ) THEN
	1419	alpha = pi / 2.0_wp
	1420	ELSEIF ( y < 0.0_wp ) THEN
	1421	alpha = 3.0_wp * pi / 2.0_wp
	1422	ENDIF
	1423	ELSE
	1424	IF ( x < 0.0_wp ) THEN
	1425	alpha = ATAN( y / x ) + pi
	1426	ELSE
	1427	IF ( y < 0.0_wp ) THEN
	1428	alpha = ATAN( y / x ) + 2.0_wp * pi
	1429	ELSE
	1430	alpha = ATAN( y / x )
	1431	ENDIF
	1432	ENDIF
	1433	ENDIF
	1434
	1435	velocity_amplitude = ( pi * stokes_waveheight / stokes_wavelength )*2 &
	1436	SQRT( g * stokes_wavelength / ( 2.0_wp * pi ) )
	1437
	1438	DO k = nzb, nzt
	1439	u_stokes_zu(k) = velocity_amplitude * COS( alpha ) * &
	1440	EXP( 4.0_wp * pi * zu(k) / stokes_wavelength )
	1441	u_stokes_zw(k) = velocity_amplitude * COS( alpha ) * &
	1442	EXP( 4.0_wp * pi * zw(k) / stokes_wavelength )
	1443	v_stokes_zu(k) = velocity_amplitude * SIN( alpha ) * &
	1444	EXP( 4.0_wp * pi * zu(k) / stokes_wavelength )
	1445	v_stokes_zw(k) = velocity_amplitude * SIN( alpha ) * &
	1446	EXP( 4.0_wp * pi * zw(k) / stokes_wavelength )
	1447	ENDDO
	1448	u_stokes_zu(nzt+1) = u_stokes_zw(nzt) ! because zu(nzt+1) changes the sign
	1449	u_stokes_zw(nzt+1) = u_stokes_zw(nzt) ! because zw(nzt+1) changes the sign
	1450	v_stokes_zu(nzt+1) = v_stokes_zw(nzt) ! because zu(nzt+1) changes the sign
	1451	v_stokes_zw(nzt+1) = v_stokes_zw(nzt) ! because zw(nzt+1) changes the sign
	1452
	1453	ENDIF
	1454
	1455	!
	1456	!-- Wave breaking effects
	1457	IF ( wave_breaking ) THEN
	1458	!
	1459	!-- Calculate friction velocity at ocean surface
	1460	u_star_wave_breaking = SQRT( SQRT( top_momentumflux_u**2 + &
	1461	top_momentumflux_v**2 ) )
	1462	!
	1463	!-- Set the time scale of random forcing. The vertical grid spacing at the
	1464	!-- ocean surface is assumed as the length scale of turbulence.
	1465	!-- Formula follows Noh et al. (2004), JPO
	1466	timescale_wave_breaking = 0.1_wp * dzw(nzt) / alpha_wave_breaking / &
	1467	u_star_wave_breaking
	1468	!
	1469	!-- Set random number seeds differently on the processor cores in order to
	1470	!-- create different random number sequences
	1471	iran_ocean = iran_ocean + myid
	1472	ENDIF
	1473
[3294]	1474	END SUBROUTINE ocean_init
	1475
	1476
	1477	!------------------------------------------------------------------------------!
	1478	! Description:
	1479	! ------------
	1480	!> Prognostic equation for salinity.
	1481	!> Vector-optimized version
	1482	!------------------------------------------------------------------------------!
	1483	SUBROUTINE ocean_prognostic_equations
	1484
	1485	USE advec_s_bc_mod, &
	1486	ONLY: advec_s_bc
	1487
	1488	USE advec_s_pw_mod, &
	1489	ONLY: advec_s_pw
	1490
	1491	USE advec_s_up_mod, &
	1492	ONLY: advec_s_up
	1493
	1494	USE advec_ws, &
	1495	ONLY: advec_s_ws
	1496
	1497	USE arrays_3d, &
	1498	ONLY: rdf_sc, tend, tsa_m
	1499
	1500	USE control_parameters, &
[3381]	1501	ONLY: dt_3d, intermediate_timestep_count, &
	1502	intermediate_timestep_count_max, scalar_advec, simulated_time, &
	1503	timestep_scheme, tsc, ws_scheme_sca
[3294]	1504
	1505	USE cpulog, &
	1506	ONLY: cpu_log, log_point
	1507
	1508	USE diffusion_s_mod, &
	1509	ONLY: diffusion_s
	1510
	1511	USE indices, &
	1512	ONLY: nxl, nxr, nyn, nys, nzb, nzt, wall_flags_0
	1513
	1514	USE surface_mod, &
	1515	ONLY: surf_def_v, surf_def_h, surf_lsm_h, surf_lsm_v, surf_usm_h, &
	1516	surf_usm_v
	1517
	1518	USE user_actions_mod, &
	1519	ONLY: user_actions
	1520
	1521	IMPLICIT NONE
	1522
	1523	INTEGER(iwp) :: i !< loop index
	1524	INTEGER(iwp) :: j !< loop index
	1525	INTEGER(iwp) :: k !< loop index
	1526
	1527	REAL(wp) :: sbt !< weighting factor for sub-time step
	1528
	1529	!
[3381]	1530	!-- Switch of the surface heat flux, if requested
	1531	IF ( surface_cooling_spinup_time /= 999999.9_wp ) THEN
	1532	IF ( .NOT. surface_cooling_switched_off .AND. &
	1533	simulated_time >= surface_cooling_spinup_time ) THEN
	1534
	1535	surf_def_h(2)%shf = 0.0_wp
	1536	surface_cooling_switched_off = .TRUE.
	1537
	1538	ENDIF
	1539	ENDIF
	1540
	1541	!
[3294]	1542	!-- Compute prognostic equations for the ocean mode
	1543	!-- First, start with salinity
[3568]	1544	IF ( salinity ) THEN
[3303]	1545
[3568]	1546	CALL cpu_log( log_point(37), 'sa-equation', 'start' )
[3294]	1547
	1548	!
[3568]	1549	!-- sa-tendency terms with communication
	1550	sbt = tsc(2)
	1551	IF ( scalar_advec == 'bc-scheme' ) THEN
[3294]	1552
[3568]	1553	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
[3294]	1554	!
[3568]	1555	!-- Bott-Chlond scheme always uses Euler time step. Thus:
	1556	sbt = 1.0_wp
	1557	ENDIF
	1558	tend = 0.0_wp
	1559	CALL advec_s_bc( sa, 'sa' )
	1560
[3294]	1561	ENDIF
	1562
	1563	!
[3568]	1564	!-- sa-tendency terms with no communication
	1565	IF ( scalar_advec /= 'bc-scheme' ) THEN
	1566	tend = 0.0_wp
	1567	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	1568	IF ( ws_scheme_sca ) THEN
	1569	CALL advec_s_ws( sa, 'sa' )
	1570	ELSE
	1571	CALL advec_s_pw( sa )
	1572	ENDIF
[3294]	1573	ELSE
[3568]	1574	CALL advec_s_up( sa )
[3294]	1575	ENDIF
	1576	ENDIF
	1577
[3568]	1578	CALL diffusion_s( sa, &
	1579	surf_def_h(0)%sasws, surf_def_h(1)%sasws, &
	1580	surf_def_h(2)%sasws, &
	1581	surf_lsm_h%sasws, surf_usm_h%sasws, &
	1582	surf_def_v(0)%sasws, surf_def_v(1)%sasws, &
	1583	surf_def_v(2)%sasws, surf_def_v(3)%sasws, &
	1584	surf_lsm_v(0)%sasws, surf_lsm_v(1)%sasws, &
	1585	surf_lsm_v(2)%sasws, surf_lsm_v(3)%sasws, &
	1586	surf_usm_v(0)%sasws, surf_usm_v(1)%sasws, &
	1587	surf_usm_v(2)%sasws, surf_usm_v(3)%sasws )
[3294]	1588
[3568]	1589	CALL user_actions( 'sa-tendency' )
[3294]	1590
	1591	!
[3568]	1592	!-- Prognostic equation for salinity
	1593	DO i = nxl, nxr
	1594	DO j = nys, nyn
	1595	DO k = nzb+1, nzt
	1596	sa_p(k,j,i) = sa(k,j,i) + ( dt_3d * ( sbt * tend(k,j,i) + &
	1597	tsc(3) * tsa_m(k,j,i) ) &
	1598	- tsc(5) * rdf_sc(k) * &
	1599	( sa(k,j,i) - sa_init(k) ) &
	1600	) &
	1601	* MERGE( 1.0_wp, 0.0_wp, &
[3294]	1602	BTEST( wall_flags_0(k,j,i), 0 ) &
[3568]	1603	)
	1604	IF ( sa_p(k,j,i) < 0.0_wp ) sa_p(k,j,i) = 0.1_wp * sa(k,j,i)
	1605	ENDDO
[3294]	1606	ENDDO
	1607	ENDDO
	1608
	1609	!
[3568]	1610	!-- Calculate tendencies for the next Runge-Kutta step
	1611	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	1612	IF ( intermediate_timestep_count == 1 ) THEN
	1613	DO i = nxl, nxr
	1614	DO j = nys, nyn
	1615	DO k = nzb+1, nzt
	1616	tsa_m(k,j,i) = tend(k,j,i)
	1617	ENDDO
[3294]	1618	ENDDO
	1619	ENDDO
[3568]	1620	ELSEIF ( intermediate_timestep_count < intermediate_timestep_count_max ) &
	1621	THEN
	1622	DO i = nxl, nxr
	1623	DO j = nys, nyn
	1624	DO k = nzb+1, nzt
	1625	tsa_m(k,j,i) = -9.5625_wp * tend(k,j,i) + &
	1626	5.3125_wp * tsa_m(k,j,i)
	1627	ENDDO
[3294]	1628	ENDDO
	1629	ENDDO
[3568]	1630	ENDIF
[3294]	1631	ENDIF
[3568]	1632
	1633	CALL cpu_log( log_point(37), 'sa-equation', 'stop' )
	1634
[3294]	1635	ENDIF
	1636
	1637	!
	1638	!-- Calculate density by the equation of state for seawater
	1639	CALL cpu_log( log_point(38), 'eqns-seawater', 'start' )
	1640	CALL eqn_state_seawater
	1641	CALL cpu_log( log_point(38), 'eqns-seawater', 'stop' )
	1642
	1643	END SUBROUTINE ocean_prognostic_equations
	1644
	1645
	1646	!------------------------------------------------------------------------------!
	1647	! Description:
	1648	! ------------
	1649	!> Prognostic equations for ocean mode (so far, salinity only)
	1650	!> Cache-optimized version
	1651	!------------------------------------------------------------------------------!
	1652	SUBROUTINE ocean_prognostic_equations_ij( i, j, i_omp_start, tn )
	1653
	1654	USE advec_s_pw_mod, &
	1655	ONLY: advec_s_pw
	1656
	1657	USE advec_s_up_mod, &
	1658	ONLY: advec_s_up
	1659
	1660	USE advec_ws, &
	1661	ONLY: advec_s_ws
	1662
	1663	USE arrays_3d, &
	1664	ONLY: diss_l_sa, diss_s_sa, flux_l_sa, flux_s_sa, rdf_sc, tend, tsa_m
	1665
	1666	USE control_parameters, &
	1667	ONLY: dt_3d, intermediate_timestep_count, &
[3381]	1668	intermediate_timestep_count_max, simulated_time, &
	1669	timestep_scheme, tsc, ws_scheme_sca
[3294]	1670
	1671	USE diffusion_s_mod, &
	1672	ONLY: diffusion_s
	1673
	1674	USE indices, &
	1675	ONLY: nzb, nzt, wall_flags_0
	1676
	1677	USE surface_mod, &
	1678	ONLY: surf_def_v, surf_def_h, surf_lsm_h, surf_lsm_v, surf_usm_h, &
	1679	surf_usm_v
	1680
	1681	USE user_actions_mod, &
	1682	ONLY: user_actions
	1683
	1684	IMPLICIT NONE
	1685
	1686	INTEGER(iwp) :: i !< loop index x direction
	1687	INTEGER(iwp) :: i_omp_start !< first loop index of i-loop in calling &
	1688	!< routine prognostic_equations
	1689	INTEGER(iwp) :: j !< loop index y direction
	1690	INTEGER(iwp) :: k !< loop index z direction
	1691	INTEGER(iwp) :: tn !< task number of openmp task
	1692
[3381]	1693
[3294]	1694	!
[3381]	1695	!-- Switch of the surface heat flux, if requested
	1696	IF ( surface_cooling_spinup_time /= 999999.9_wp ) THEN
	1697	IF ( .NOT. surface_cooling_switched_off .AND. &
	1698	simulated_time >= surface_cooling_spinup_time ) THEN
	1699
	1700	surf_def_h(2)%shf = 0.0_wp
	1701	surface_cooling_switched_off = .TRUE.
	1702
	1703	ENDIF
	1704	ENDIF
	1705
	1706	!
[3294]	1707	!-- Compute prognostic equations for the ocean mode
	1708	!-- First, start with tendency-terms for salinity
[3568]	1709	IF ( salinity ) THEN
[3303]	1710
[3568]	1711	tend(:,j,i) = 0.0_wp
	1712	IF ( timestep_scheme(1:5) == 'runge' ) &
	1713	THEN
	1714	IF ( ws_scheme_sca ) THEN
	1715	CALL advec_s_ws( i, j, sa, 'sa', flux_s_sa, diss_s_sa, flux_l_sa,&
	1716	diss_l_sa, i_omp_start, tn )
	1717	ELSE
	1718	CALL advec_s_pw( i, j, sa )
	1719	ENDIF
[3294]	1720	ELSE
[3568]	1721	CALL advec_s_up( i, j, sa )
[3294]	1722	ENDIF
[3568]	1723	CALL diffusion_s( i, j, sa, &
	1724	surf_def_h(0)%sasws, surf_def_h(1)%sasws, &
	1725	surf_def_h(2)%sasws, &
	1726	surf_lsm_h%sasws, surf_usm_h%sasws, &
	1727	surf_def_v(0)%sasws, surf_def_v(1)%sasws, &
	1728	surf_def_v(2)%sasws, surf_def_v(3)%sasws, &
	1729	surf_lsm_v(0)%sasws, surf_lsm_v(1)%sasws, &
	1730	surf_lsm_v(2)%sasws, surf_lsm_v(3)%sasws, &
	1731	surf_usm_v(0)%sasws, surf_usm_v(1)%sasws, &
	1732	surf_usm_v(2)%sasws, surf_usm_v(3)%sasws )
[3294]	1733
[3568]	1734	CALL user_actions( i, j, 'sa-tendency' )
[3294]	1735
	1736	!
[3568]	1737	!-- Prognostic equation for salinity
	1738	DO k = nzb+1, nzt
[3294]	1739
[3568]	1740	sa_p(k,j,i) = sa(k,j,i) + ( dt_3d * &
	1741	( tsc(2) * tend(k,j,i) + &
	1742	tsc(3) * tsa_m(k,j,i) ) &
	1743	- tsc(5) * rdf_sc(k) &
	1744	* ( sa(k,j,i) - sa_init(k) ) &
	1745	) * MERGE( 1.0_wp, 0.0_wp, &
	1746	BTEST( wall_flags_0(k,j,i), 0 ) )
[3294]	1747
[3568]	1748	IF ( sa_p(k,j,i) < 0.0_wp ) sa_p(k,j,i) = 0.1_wp * sa(k,j,i)
[3294]	1749
[3568]	1750	ENDDO
[3294]	1751
	1752	!
[3568]	1753	!-- Calculate tendencies for the next Runge-Kutta step
	1754	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	1755	IF ( intermediate_timestep_count == 1 ) THEN
	1756	DO k = nzb+1, nzt
	1757	tsa_m(k,j,i) = tend(k,j,i)
	1758	ENDDO
	1759	ELSEIF ( intermediate_timestep_count < intermediate_timestep_count_max ) &
	1760	THEN
	1761	DO k = nzb+1, nzt
	1762	tsa_m(k,j,i) = -9.5625_wp * tend(k,j,i) + &
	1763	5.3125_wp * tsa_m(k,j,i)
	1764	ENDDO
	1765	ENDIF
[3294]	1766	ENDIF
[3568]	1767
[3294]	1768	ENDIF
	1769
	1770	!
	1771	!-- Calculate density by the equation of state for seawater
	1772	CALL eqn_state_seawater( i, j )
	1773
	1774	END SUBROUTINE ocean_prognostic_equations_ij
	1775
	1776
	1777	!------------------------------------------------------------------------------!
	1778	! Description:
	1779	! ------------
	1780	!> Swapping of timelevels.
	1781	!------------------------------------------------------------------------------!
	1782	SUBROUTINE ocean_swap_timelevel( mod_count )
	1783
	1784	IMPLICIT NONE
	1785
	1786	INTEGER, INTENT(IN) :: mod_count !< flag defining where pointers point to
	1787
	1788	#if defined( __nopointer )
	1789
	1790	sa = sa_p
	1791
	1792	#else
	1793
	1794	SELECT CASE ( mod_count )
	1795
	1796	CASE ( 0 )
[3303]	1797	IF ( salinity ) THEN
	1798	sa => sa_1; sa_p => sa_2
	1799	ENDIF
[3294]	1800
	1801	CASE ( 1 )
[3303]	1802	IF ( salinity ) THEN
	1803	sa => sa_2; sa_p => sa_1
	1804	ENDIF
[3294]	1805
	1806	END SELECT
	1807
	1808	#endif
	1809
	1810	END SUBROUTINE ocean_swap_timelevel
	1811
	1812
	1813	!------------------------------------------------------------------------------!
	1814	! Description:
	1815	! ------------
	1816	!> This routine reads the respective restart data for the ocean module.
	1817	!------------------------------------------------------------------------------!
	1818	SUBROUTINE ocean_rrd_global( found )
	1819
	1820
	1821	USE control_parameters, &
	1822	ONLY: length, restart_string
	1823
	1824
	1825	IMPLICIT NONE
	1826
	1827	LOGICAL, INTENT(OUT) :: found
	1828
	1829
	1830	found = .TRUE.
	1831
	1832	SELECT CASE ( restart_string(1:length) )
	1833
	1834	CASE ( 'bc_sa_t' )
	1835	READ ( 13 ) bc_sa_t
	1836
	1837	CASE ( 'bottom_salinityflux' )
	1838	READ ( 13 ) bottom_salinityflux
	1839
[3303]	1840	CASE ( 'salinity' )
	1841	READ ( 13 ) salinity
	1842
[3294]	1843	CASE ( 'sa_init' )
	1844	READ ( 13 ) sa_init
	1845
	1846	CASE ( 'sa_surface' )
	1847	READ ( 13 ) sa_surface
	1848
	1849	CASE ( 'sa_vertical_gradient' )
	1850	READ ( 13 ) sa_vertical_gradient
	1851
	1852	CASE ( 'sa_vertical_gradient_level' )
	1853	READ ( 13 ) sa_vertical_gradient_level
	1854
	1855	CASE ( 'stokes_waveheight' )
	1856	READ ( 13 ) stokes_waveheight
	1857
	1858	CASE ( 'stokes_wavelength' )
	1859	READ ( 13 ) stokes_wavelength
	1860
[3381]	1861	CASE ( 'surface_cooling_spinup_time' )
	1862	READ ( 13 ) surface_cooling_spinup_time
	1863
[3294]	1864	CASE ( 'top_salinityflux' )
	1865	READ ( 13 ) top_salinityflux
	1866
	1867	CASE ( 'wall_salinityflux' )
	1868	READ ( 13 ) wall_salinityflux
	1869
[3302]	1870	CASE ( 'wave_breaking' )
	1871	READ ( 13 ) wave_breaking
	1872
[3294]	1873	CASE DEFAULT
	1874
	1875	found = .FALSE.
	1876
	1877	END SELECT
	1878
	1879	END SUBROUTINE ocean_rrd_global
	1880
	1881
	1882	!------------------------------------------------------------------------------!
	1883	! Description:
	1884	! ------------
	1885	!> This routine reads the respective restart data for the ocean module.
	1886	!------------------------------------------------------------------------------!
	1887	SUBROUTINE ocean_rrd_local( i, k, nxlf, nxlc, nxl_on_file, nxrf, nxrc, &
	1888	nxr_on_file, nynf, nync, nyn_on_file, nysf, &
	1889	nysc, nys_on_file, tmp_2d, tmp_3d, found )
	1890
	1891	USE averaging, &
	1892	ONLY: rho_ocean_av, sa_av
	1893
	1894	USE control_parameters, &
	1895	ONLY: length, restart_string
	1896
	1897	USE indices, &
	1898	ONLY: nbgp, nxlg, nxrg, nyng, nysg, nzb, nzt
	1899
	1900	USE pegrid
	1901
	1902
	1903	IMPLICIT NONE
	1904
	1905	INTEGER(iwp) :: i !<
	1906	INTEGER(iwp) :: k !<
	1907	INTEGER(iwp) :: nxlc !<
	1908	INTEGER(iwp) :: nxlf !<
	1909	INTEGER(iwp) :: nxl_on_file !<
	1910	INTEGER(iwp) :: nxrc !<
	1911	INTEGER(iwp) :: nxrf !<
	1912	INTEGER(iwp) :: nxr_on_file !<
	1913	INTEGER(iwp) :: nync !<
	1914	INTEGER(iwp) :: nynf !<
	1915	INTEGER(iwp) :: nyn_on_file !<
	1916	INTEGER(iwp) :: nysc !<
	1917	INTEGER(iwp) :: nysf !<
	1918	INTEGER(iwp) :: nys_on_file !<
	1919
	1920	LOGICAL, INTENT(OUT) :: found
	1921
	1922	REAL(wp), DIMENSION(nys_on_file-nbgp:nyn_on_file+nbgp,nxl_on_file-nbgp:nxr_on_file+nbgp) :: tmp_2d !<
	1923	REAL(wp), DIMENSION(nzb:nzt+1,nys_on_file-nbgp:nyn_on_file+nbgp,nxl_on_file-nbgp:nxr_on_file+nbgp) :: tmp_3d !<
	1924
	1925
	1926	found = .TRUE.
	1927
	1928	SELECT CASE ( restart_string(1:length) )
	1929
	1930	CASE ( 'rho_ocean_av' )
	1931	IF ( .NOT. ALLOCATED( rho_ocean_av ) ) THEN
	1932	ALLOCATE( rho_ocean_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1933	ENDIF
	1934	IF ( k == 1 ) READ ( 13 ) tmp_3d
	1935	rho_ocean_av(:,nysc-nbgp:nync+nbgp,nxlc-nbgp:nxrc+nbgp) = &
	1936	tmp_3d(:,nysf-nbgp:nynf+nbgp,nxlf-nbgp:nxrf+nbgp)
	1937
	1938	CASE ( 'sa' )
	1939	IF ( k == 1 ) READ ( 13 ) tmp_3d
	1940	sa(:,nysc-nbgp:nync+nbgp,nxlc-nbgp:nxrc+nbgp) = &
	1941	tmp_3d(:,nysf-nbgp:nynf+nbgp,nxlf-nbgp:nxrf+nbgp)
	1942
	1943	CASE ( 'sa_av' )
	1944	IF ( .NOT. ALLOCATED( sa_av ) ) THEN
	1945	ALLOCATE( sa_av(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	1946	ENDIF
	1947	IF ( k == 1 ) READ ( 13 ) tmp_3d
	1948	sa_av(:,nysc-nbgp:nync+nbgp,nxlc-nbgp:nxrc+nbgp) = &
	1949	tmp_3d(:,nysf-nbgp:nynf+nbgp,nxlf-nbgp:nxrf+nbgp)
	1950
	1951	CASE DEFAULT
	1952	found = .FALSE.
	1953
	1954	END SELECT
	1955
	1956	END SUBROUTINE ocean_rrd_local
	1957
	1958
	1959	!------------------------------------------------------------------------------!
	1960	! Description:
	1961	! ------------
	1962	!> This routine writes the respective restart data for the ocean module.
	1963	!------------------------------------------------------------------------------!
	1964	SUBROUTINE ocean_wrd_global
	1965
	1966
	1967	IMPLICIT NONE
	1968
	1969	CALL wrd_write_string( 'bc_sa_t' )
	1970	WRITE ( 14 ) bc_sa_t
	1971
	1972	CALL wrd_write_string( 'bottom_salinityflux' )
	1973	WRITE ( 14 ) bottom_salinityflux
	1974
[3303]	1975	CALL wrd_write_string( 'salinity' )
	1976	WRITE ( 14 ) salinity
	1977
[3294]	1978	CALL wrd_write_string( 'sa_init' )
	1979	WRITE ( 14 ) sa_init
	1980
	1981	CALL wrd_write_string( 'sa_surface' )
	1982	WRITE ( 14 ) sa_surface
	1983
	1984	CALL wrd_write_string( 'sa_vertical_gradient' )
	1985	WRITE ( 14 ) sa_vertical_gradient
	1986
	1987	CALL wrd_write_string( 'sa_vertical_gradient_level' )
	1988	WRITE ( 14 ) sa_vertical_gradient_level
	1989
	1990	CALL wrd_write_string( 'stokes_waveheight' )
	1991	WRITE ( 14 ) stokes_waveheight
	1992
	1993	CALL wrd_write_string( 'stokes_wavelength' )
	1994	WRITE ( 14 ) stokes_wavelength
	1995
[3381]	1996	CALL wrd_write_string( 'surface_cooling_spinup_time' )
	1997	WRITE ( 14 ) surface_cooling_spinup_time
	1998
[3294]	1999	CALL wrd_write_string( 'top_salinityflux' )
	2000	WRITE ( 14 ) top_salinityflux
	2001
	2002	CALL wrd_write_string( 'wall_salinityflux' )
	2003	WRITE ( 14 ) wall_salinityflux
	2004
[3302]	2005	CALL wrd_write_string( 'wave_breaking' )
	2006	WRITE ( 14 ) wave_breaking
	2007
[3294]	2008	END SUBROUTINE ocean_wrd_global
	2009
	2010
	2011	!------------------------------------------------------------------------------!
	2012	! Description:
	2013	! ------------
	2014	!> This routine writes the respective restart data for the ocean module.
	2015	!------------------------------------------------------------------------------!
	2016	SUBROUTINE ocean_wrd_local
	2017
	2018	USE averaging, &
	2019	ONLY: rho_ocean_av, sa_av
	2020
	2021	IMPLICIT NONE
	2022
	2023	IF ( ALLOCATED( rho_ocean_av ) ) THEN
	2024	CALL wrd_write_string( 'rho_ocean_av' )
	2025	WRITE ( 14 ) rho_ocean_av
	2026	ENDIF
	2027
	2028	CALL wrd_write_string( 'sa' )
	2029	WRITE ( 14 ) sa
	2030
	2031	IF ( ALLOCATED( sa_av ) ) THEN
	2032	CALL wrd_write_string( 'sa_av' )
	2033	WRITE ( 14 ) sa_av
	2034	ENDIF
	2035
	2036	END SUBROUTINE ocean_wrd_local
	2037
	2038
[3302]	2039	!------------------------------------------------------------------------------!
	2040	! Description:
	2041	! ------------
	2042	!> This routine calculates the Craik Leibovich vortex force and the additional
	2043	!> effect of the Stokes drift on the Coriolis force
	2044	!> Call for all gridpoints.
	2045	!------------------------------------------------------------------------------!
	2046	SUBROUTINE stokes_drift_terms( component )
	2047
	2048	USE arrays_3d, &
	2049	ONLY: ddzu, u, u_stokes_zu, u_stokes_zw, v, v_stokes_zu, &
	2050	v_stokes_zw, w, tend
	2051
	2052	USE control_parameters, &
	2053	ONLY: f, fs, message_string
	2054
	2055	USE grid_variables, &
	2056	ONLY: ddx, ddy
	2057
	2058	USE indices, &
	2059	ONLY: nxl, nxr, nys, nysv, nyn, nzb, nzt
	2060
	2061	IMPLICIT NONE
	2062
	2063	INTEGER(iwp) :: component !< component of momentum equation
	2064	INTEGER(iwp) :: i !< loop index along x
	2065	INTEGER(iwp) :: j !< loop index along y
	2066	INTEGER(iwp) :: k !< loop index along z
	2067
	2068
	2069	!
	2070	!-- Compute Stokes terms for the respective velocity components
	2071	SELECT CASE ( component )
	2072
	2073	!
	2074	!-- u-component
	2075	CASE ( 1 )
	2076	DO i = nxl, nxr
	2077	DO j = nysv, nyn
	2078	DO k = nzb+1, nzt
	2079	tend(k,j,i) = tend(k,j,i) + v_stokes_zu(k) * ( &
	2080	0.5 * ( v(k,j+1,i) - v(k,j+1,i-1) &
	2081	+ v(k,j,i) - v(k,j,i-1) ) * ddx &
	2082	- 0.5 * ( u(k,j+1,i) - u(k,j-1,i) ) * ddy &
	2083	) &
	2084	+ f * v_stokes_zu(k)
	2085	ENDDO
	2086	ENDDO
	2087	ENDDO
	2088
	2089	!
	2090	!-- v-component
	2091	CASE ( 2 )
	2092	DO i = nxl, nxr
	2093	DO j = nysv, nyn
	2094	DO k = nzb+1, nzt
	2095	tend(k,j,i) = tend(k,j,i) - u_stokes_zu(k) * ( &
	2096	0.5 * ( v(k,j,i+1) - v(k,j,i-1) ) * ddx &
	2097	- 0.5 * ( u(k,j,i) - u(k,j-1,i) &
	2098	+ u(k,j,i+1) - u(k,j-1,i+1) ) * ddy &
	2099	) &
	2100	- f * u_stokes_zu(k)
	2101	ENDDO
	2102	ENDDO
	2103	ENDDO
	2104
	2105	!
	2106	!-- w-component
	2107	CASE ( 3 )
	2108	DO i = nxl, nxr
	2109	DO j = nys, nyn
	2110	DO k = nzb+1, nzt
	2111	tend(k,j,i) = tend(k,j,i) + u_stokes_zw(k) * ( &
	2112	0.5 * ( u(k+1,j,i) - u(k,j,i) &
	2113	+ u(k+1,j,i+1) - u(k,j,i+1) &
	2114	) * ddzu(k+1) &
	2115	- 0.5 * ( w(k,j,i+1) - w(k,j,i-1) &
	2116	) * ddx ) &
	2117	- v_stokes_zw(k) * ( &
	2118	0.5 * ( w(k,j+1,i) - w(k,j-1,i) &
	2119	) * ddy &
	2120	- 0.5 * ( v(k+1,j,i) - v(k,j,i) &
	2121	+ v(k+1,j+1,i) - v(k,j+1,i) &
	2122	) * ddzu(k) ) &
	2123	+ fs * u_stokes_zw(k)
	2124	ENDDO
	2125	ENDDO
	2126	ENDDO
	2127
	2128	CASE DEFAULT
	2129	WRITE( message_string, * ) 'wrong component of Stokes force: ', &
	2130	component
	2131	CALL message( 'stokes_drift_terms', 'PA0091', 1, 2, 0, 6, 0 )
	2132
	2133	END SELECT
	2134
	2135	END SUBROUTINE stokes_drift_terms
	2136
	2137
	2138	!------------------------------------------------------------------------------!
	2139	! Description:
	2140	! ------------
	2141	!> This routine calculates the Craik Leibovich vortex force and the additional
	2142	!> effect of the Stokes drift on the Coriolis force
	2143	!> Call for gridpoints i,j.
	2144	!------------------------------------------------------------------------------!
	2145
	2146	SUBROUTINE stokes_drift_terms_ij( i, j, component )
	2147
	2148	USE arrays_3d, &
	2149	ONLY: ddzu, u, u_stokes_zu, u_stokes_zw, v, v_stokes_zu, &
	2150	v_stokes_zw, w, tend
	2151
	2152	USE control_parameters, &
	2153	ONLY: f, fs, message_string
	2154
	2155	USE grid_variables, &
	2156	ONLY: ddx, ddy
	2157
	2158	USE indices, &
[3614]	2159	ONLY: nzb, nzt
[3302]	2160
	2161	IMPLICIT NONE
	2162
	2163	INTEGER(iwp) :: component !< component of momentum equation
	2164	INTEGER(iwp) :: i !< loop index along x
	2165	INTEGER(iwp) :: j !< loop index along y
	2166	INTEGER(iwp) :: k !< loop incex along z
	2167
	2168
	2169	!
	2170	!-- Compute Stokes terms for the respective velocity components
	2171	SELECT CASE ( component )
	2172
	2173	!
	2174	!-- u-component
	2175	CASE ( 1 )
	2176	DO k = nzb+1, nzt
	2177	tend(k,j,i) = tend(k,j,i) + v_stokes_zu(k) * ( &
	2178	0.5 * ( v(k,j+1,i) - v(k,j+1,i-1) &
	2179	+ v(k,j,i) - v(k,j,i-1) ) * ddx &
	2180	- 0.5 * ( u(k,j+1,i) - u(k,j-1,i) ) * ddy &
	2181	) &
	2182	+ f * v_stokes_zu(k)
	2183	ENDDO
	2184	!
	2185	!-- v-component
	2186	CASE ( 2 )
	2187	DO k = nzb+1, nzt
	2188	tend(k,j,i) = tend(k,j,i) - u_stokes_zu(k) * ( &
	2189	0.5 * ( v(k,j,i+1) - v(k,j,i-1) ) * ddx &
	2190	- 0.5 * ( u(k,j,i) - u(k,j-1,i) &
	2191	+ u(k,j,i+1) - u(k,j-1,i+1) ) * ddy &
	2192	) &
	2193	- f * u_stokes_zu(k)
	2194	ENDDO
	2195
	2196	!
	2197	!-- w-component
	2198	CASE ( 3 )
	2199	DO k = nzb+1, nzt
	2200	tend(k,j,i) = tend(k,j,i) + u_stokes_zw(k) * ( &
	2201	0.5 * ( u(k+1,j,i) - u(k,j,i) &
	2202	+ u(k+1,j,i+1) - u(k,j,i+1) &
	2203	) * ddzu(k+1) &
	2204	- 0.5 * ( w(k,j,i+1) - w(k,j,i-1) &
	2205	) * ddx ) &
	2206	- v_stokes_zw(k) * ( &
	2207	0.5 * ( w(k,j+1,i) - w(k,j-1,i) &
	2208	) * ddy &
	2209	- 0.5 * ( v(k+1,j,i) - v(k,j,i) &
	2210	+ v(k+1,j+1,i) - v(k,j+1,i) &
	2211	) * ddzu(k) ) &
	2212	+ fs * u_stokes_zw(k)
	2213	ENDDO
	2214
	2215	CASE DEFAULT
	2216	WRITE( message_string, * ) ' wrong component: ', component
	2217	CALL message( 'stokes_drift_terms', 'PA0091', 1, 2, 0, 6, 0 )
	2218
	2219	END SELECT
	2220
	2221	END SUBROUTINE stokes_drift_terms_ij
	2222
	2223
	2224	!------------------------------------------------------------------------------!
	2225	! Description:
	2226	! ------------
	2227	!> This routine calculates turbulence generated by wave breaking near the ocean
	2228	!> surface, following a parameterization given in Noh et al. (2004), JPO
	2229	!> Call for all gridpoints.
	2230	!> TODO: so far, this routine only works if the model time step has about the
	2231	!> same value as the time scale of wave breaking!
	2232	!------------------------------------------------------------------------------!
	2233	SUBROUTINE wave_breaking_term( component )
	2234
	2235	USE arrays_3d, &
	2236	ONLY: u_p, v_p
	2237
	2238	USE control_parameters, &
	2239	ONLY: dt_3d, message_string
	2240
	2241	USE indices, &
	2242	ONLY: nxl, nxlu, nxr, nys, nysv, nyn, nzt
	2243
	2244	IMPLICIT NONE
	2245
	2246	INTEGER(iwp) :: component !< component of momentum equation
	2247	INTEGER(iwp) :: i !< loop index along x
	2248	INTEGER(iwp) :: j !< loop index along y
	2249
	2250	REAL(wp) :: random_gauss !< function that creates a random number with a
	2251	!< Gaussian distribution
	2252
	2253
	2254	!
	2255	!-- Compute wave breaking terms for the respective velocity components.
	2256	!-- Velocities are directly manipulated, since this is not a real force
	2257	SELECT CASE ( component )
	2258
	2259	!
	2260	!-- u-component
	2261	CASE ( 1 )
	2262	DO i = nxlu, nxr
	2263	DO j = nys, nyn
	2264	u_p(nzt,j,i) = u_p(nzt,j,i) + &
	2265	( random_gauss( iran_ocean, 1.0_wp ) - 1.0_wp ) &
	2266	* alpha_wave_breaking * u_star_wave_breaking &
	2267	/ timescale_wave_breaking * dt_3d
	2268	ENDDO
	2269	ENDDO
	2270	!
	2271	!-- v-component
	2272	CASE ( 2 )
	2273	DO i = nxl, nxr
	2274	DO j = nysv, nyn
	2275	v_p(nzt,j,i) = v_p(nzt,j,i) + &
	2276	( random_gauss( iran_ocean, 1.0_wp ) - 1.0_wp ) &
	2277	* alpha_wave_breaking * u_star_wave_breaking &
	2278	/ timescale_wave_breaking * dt_3d
	2279	ENDDO
	2280	ENDDO
	2281
	2282	CASE DEFAULT
	2283	WRITE( message_string, * ) 'wrong component of wave breaking: ', &
	2284	component
	2285	CALL message( 'stokes_drift_terms', 'PA0466', 1, 2, 0, 6, 0 )
	2286
	2287	END SELECT
	2288
	2289	END SUBROUTINE wave_breaking_term
	2290
	2291
	2292	!------------------------------------------------------------------------------!
	2293	! Description:
	2294	! ------------
	2295	!> This routine calculates turbulence generated by wave breaking near the ocean
	2296	!> surface, following a parameterization given in Noh et al. (2004), JPO
	2297	!> Call for gridpoint i,j.
	2298	!> TODO: so far, this routine only works if the model time step has about the
	2299	!> same value as the time scale of wave breaking!
	2300	!------------------------------------------------------------------------------!
	2301	SUBROUTINE wave_breaking_term_ij( i, j, component )
	2302
	2303	USE arrays_3d, &
	2304	ONLY: u_p, v_p
	2305
	2306	USE control_parameters, &
	2307	ONLY: dt_3d, message_string
	2308
	2309	USE indices, &
	2310	ONLY: nzt
	2311
	2312	IMPLICIT NONE
	2313
	2314	INTEGER(iwp) :: component !< component of momentum equation
	2315	INTEGER(iwp) :: i !< loop index along x
	2316	INTEGER(iwp) :: j !< loop index along y
	2317
	2318	REAL(wp) :: random_gauss !< function that creates a random number with a
	2319	!< Gaussian distribution
	2320
	2321	!
	2322	!-- Compute wave breaking terms for the respective velocity components
	2323	SELECT CASE ( component )
	2324
	2325	!
	2326	!-- u-/v-component
	2327	CASE ( 1 )
	2328	u_p(nzt,j,i) = u_p(nzt,j,i) + &
	2329	( random_gauss( iran_ocean, 1.0_wp ) - 1.0_wp ) &
	2330	* alpha_wave_breaking * u_star_wave_breaking &
	2331	/ timescale_wave_breaking * dt_3d
	2332
	2333	CASE ( 2 )
	2334	v_p(nzt,j,i) = v_p(nzt,j,i) + &
	2335	( random_gauss( iran_ocean, 1.0_wp ) - 1.0_wp ) &
	2336	* alpha_wave_breaking * u_star_wave_breaking &
	2337	/ timescale_wave_breaking * dt_3d
	2338
	2339	CASE DEFAULT
	2340	WRITE( message_string, * ) 'wrong component of wave breaking: ', &
	2341	component
	2342	CALL message( 'stokes_drift_terms', 'PA0466', 1, 2, 0, 6, 0 )
	2343
	2344	END SELECT
	2345
	2346	END SUBROUTINE wave_breaking_term_ij
	2347
	2348
[3294]	2349	END MODULE ocean_mod

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