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source: palm/trunk/SOURCE/swap_timelevel.f90 @ 847

Last change on this file since 847 was 484, checked in by raasch, 15 years ago
typo in file headers removed
Property svn:keywords set to `Id`
File size: 6.3 KB

Rev	Line
[1]	1	SUBROUTINE swap_timelevel
	2
[3]	3	!------------------------------------------------------------------------------!
[484]	4	! Current revisions:
[1]	5	! -----------------
[110]	6	!
[1]	7	!
	8	! Former revisions:
	9	! -----------------
[3]	10	! $Id: swap_timelevel.f90 484 2010-02-05 07:36:54Z raasch $
[39]	11	!
[110]	12	! 102 2007-07-27 09:09:17Z raasch
	13	! swaping of uswst, vswst included
	14	!
[98]	15	! 95 2007-06-02 16:48:38Z raasch
	16	! Swaping of salinity
	17	!
[77]	18	! 75 2007-03-22 09:54:05Z raasch
	19	! moisture renamed humidity
	20	!
[39]	21	! 19 2007-02-23 04:53:48Z raasch
	22	! Swaping of top fluxes
	23	!
[3]	24	! RCS Log replace by Id keyword, revision history cleaned up
	25	!
[1]	26	! Revision 1.8 2004/01/28 15:28:18 raasch
	27	! Swaping for Runge-Kutta schemes implemented
	28	!
	29	! Revision 1.1 2000/01/10 10:08:58 10:08:58 raasch (Siegfried Raasch)
	30	! Initial revision
	31	!
	32	!
	33	! Description:
	34	! ------------
	35	! Swap of timelevels of variables after each timestep
[3]	36	!------------------------------------------------------------------------------!
[1]	37
	38	USE arrays_3d
	39	USE cpulog
	40	USE interfaces
	41	USE control_parameters
	42
	43	IMPLICIT NONE
	44
	45
	46	CALL cpu_log( log_point(28), 'swap_timelevel', 'start' )
	47
	48	!
	49	!-- Incrementing timestep counter
	50	timestep_count = timestep_count + 1
	51
	52	!
	53	!-- Swap of 3-level variables
	54	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	55
	56	SELECT CASE ( MOD( timestep_count, 3 ) )
	57
	58	CASE ( 0 )
	59
	60	u_m => u_1; u => u_2; u_p => u_3
	61	v_m => v_1; v => v_2; v_p => v_3
	62	w_m => w_1; w => w_2; w_p => w_3
	63	pt_m => pt_1; pt => pt_2; pt_p => pt_3
	64	IF ( .NOT. constant_diffusion ) THEN
	65	e_m => e_1; e => e_2; e_p => e_3
	66	ENDIF
[75]	67	IF ( humidity .OR. passive_scalar ) THEN
[1]	68	q_m => q_1; q => q_2; q_p => q_3
	69	ENDIF
	70
	71	CASE ( 1 )
	72
	73	u_m => u_2; u => u_3; u_p => u_1
	74	v_m => v_2; v => v_3; v_p => v_1
	75	w_m => w_2; w => w_3; w_p => w_1
	76	pt_m => pt_2; pt => pt_3; pt_p => pt_1
	77	IF ( .NOT. constant_diffusion ) THEN
	78	e_m => e_2; e => e_3; e_p => e_1
	79	ENDIF
[75]	80	IF ( humidity .OR. passive_scalar ) THEN
[1]	81	q_m => q_2; q => q_3; q_p => q_1
	82	ENDIF
	83
	84	CASE ( 2 )
	85
	86	u_m => u_3; u => u_1; u_p => u_2
	87	v_m => v_3; v => v_1; v_p => v_2
	88	w_m => w_3; w => w_1; w_p => w_2
	89	pt_m => pt_3; pt => pt_1; pt_p => pt_2
	90	IF ( .NOT. constant_diffusion ) THEN
	91	e_m => e_3; e => e_1; e_p => e_2
	92	ENDIF
[75]	93	IF ( humidity .OR. passive_scalar ) THEN
[1]	94	q_m => q_3; q => q_1; q_p => q_2
	95	ENDIF
	96
	97	END SELECT
	98
	99	ENDIF
	100
	101	!
	102	!-- Swap of 2-level variables
	103	SELECT CASE ( MOD( timestep_count, 2 ) )
	104
	105	CASE ( 0 )
	106
	107	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	108
	109	u => u_1; u_p => u_2
	110	v => v_1; v_p => v_2
	111	w => w_1; w_p => w_2
	112	pt => pt_1; pt_p => pt_2
	113	IF ( .NOT. constant_diffusion ) THEN
[95]	114	e => e_1; e_p => e_2
[1]	115	ENDIF
[95]	116	IF ( ocean ) THEN
	117	sa => sa_1; sa_p => sa_2
	118	ENDIF
[75]	119	IF ( humidity .OR. passive_scalar ) THEN
[95]	120	q => q_1; q_p => q_2
[1]	121	ENDIF
	122
	123	ELSE
	124	!
	125	!-- Old timelevels are needed for explicit diffusion within leapfrog
	126	IF ( .NOT. constant_diffusion ) THEN
	127	kh_m => kh_1; kh => kh_2
	128	km_m => km_1; km => km_2
	129	IF ( use_surface_fluxes ) THEN
	130	usws_m => usws_1; usws => usws_2
	131	vsws_m => vsws_1; vsws => vsws_2
	132	shf_m => shf_1; shf => shf_2
[75]	133	IF ( humidity .OR. passive_scalar ) THEN
[1]	134	qsws_m => qsws_1; qsws => qsws_2
	135	ENDIF
	136	ENDIF
	137	IF ( prandtl_layer ) THEN
	138	rif_m => rif_1; rif => rif_2
	139	ENDIF
[19]	140	IF ( use_top_fluxes ) THEN
[102]	141	uswst_m => uswst_1; uswst => uswst_2
	142	vswst_m => vswst_1; vswst => vswst_2
[19]	143	tswst_m => tswst_1; tswst => tswst_2
[75]	144	IF ( humidity .OR. passive_scalar ) THEN
[19]	145	qswst_m => qswst_1; qswst => qswst_2
	146	ENDIF
	147	ENDIF
[1]	148	ENDIF
	149
[75]	150	IF ( humidity ) THEN
[1]	151	vpt_m => vpt_1; vpt => vpt_2
	152	ENDIF
	153
	154	ENDIF
	155
	156	CASE ( 1 )
	157
	158	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	159
	160	u => u_2; u_p => u_1
	161	v => v_2; v_p => v_1
	162	w => w_2; w_p => w_1
	163	pt => pt_2; pt_p => pt_1
	164	IF ( .NOT. constant_diffusion ) THEN
[95]	165	e => e_2; e_p => e_1
[1]	166	ENDIF
[95]	167	IF ( ocean ) THEN
	168	sa => sa_2; sa_p => sa_1
	169	ENDIF
[75]	170	IF ( humidity .OR. passive_scalar ) THEN
[95]	171	q => q_2; q_p => q_1
[1]	172	ENDIF
	173
	174	ELSE
	175
	176	IF ( .NOT. constant_diffusion ) THEN
	177	kh_m => kh_2; kh => kh_1
	178	km_m => km_2; km => km_1
	179	IF ( use_surface_fluxes ) THEN
	180	usws_m => usws_2; usws => usws_1
	181	vsws_m => vsws_2; vsws => vsws_1
	182	shf_m => shf_2; shf => shf_1
[75]	183	IF ( humidity .OR. passive_scalar ) THEN
[1]	184	qsws_m => qsws_2; qsws => qsws_1
	185	ENDIF
	186	ENDIF
	187	IF ( prandtl_layer ) THEN
	188	rif_m => rif_2; rif => rif_1
	189	ENDIF
[19]	190	IF ( use_top_fluxes ) THEN
[102]	191	uswst_m => uswst_2; uswst => uswst_1
	192	vswst_m => vswst_2; vswst => vswst_1
	193	tswst_m => tswst_2; tswst => tswst_1
[75]	194	IF ( humidity .OR. passive_scalar ) THEN
[19]	195	qswst_m => qswst_2; qswst => qswst_1
	196	ENDIF
	197	ENDIF
[1]	198	ENDIF
	199
[75]	200	IF ( humidity ) THEN
[1]	201	vpt_m => vpt_2; vpt => vpt_1
	202	ENDIF
	203
	204	ENDIF
	205
	206	END SELECT
	207
	208	CALL cpu_log( log_point(28), 'swap_timelevel', 'stop' )
	209
	210	END SUBROUTINE swap_timelevel
	211
	212

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