trunk/dyn3d/gcm.f

PROGRAM gcm

  ! Authors: P. Le Van, L. Fairhead, F. Hourdin
  ! From "gcm.F", version 1.4, 2006/04/04 15:05:16

  ! General circulation model of LMD. Avec coordonnée verticale
  ! hybride, avec nouveaux opérateurs de dissipation "*" ("gradiv2",
  ! "divgrad2", "nxgraro2"). Possibilité de choisir le schéma pour
  ! l'advection de "q", en modifiant "iadv" dans "traceur.def".

  USE calendar, only: ioconf_calendar
  use comconst, only: daysec, cpp, dtvr, g, rad, r
  use comgeom, only: rlatu, aire_2d, cu_2d, cv_2d, rlonv
  use comgeomphy, only: airephy, cuphy, cvphy, rlatd, rlond
  use conf_gcm_m, only: day_step, iperiod, anneeref, dayref, iecri, iphysiq, &
       nday, raz_date, periodav, conf_gcm, iflag_phys
  use dimens_m, only: iim, jjm, llm, nqmx
  use dimphy, only: klon
  use dynetat0_m, only: dynetat0, day_ini
  use dynredem0_m, only: dynredem0
  use grid_change, only: dyn_phy, init_dyn_phy
  use histclo_m, only: histclo
  use iniadvtrac_m, only: iniadvtrac
  use inidissip_m, only: inidissip
  use inifilr_m, only: inifilr
  use inigeom_m, only: inigeom
  use initdynav_m, only: initdynav
  use inithist_m, only: inithist
  use init_dynzon_m, only: init_dynzon
  use jumble, only: new_unit
  use leapfrog_m, only: leapfrog
  use suphec_m, only: suphec
  use temps, only: day_ref, annee_ref, day_end, itau_dyn
  use tracstoke, only: istdyn, istphy
  use unit_nml_m, only: unit_nml
  use yoethf_m, only: yoethf

  IMPLICIT NONE

  REAL zdtvr ! time step for dynamics, in s

  ! Variables dynamiques :
  REAL ucov(iim + 1, jjm + 1, llm), vcov(iim + 1, jjm, llm)  ! vent covariant
  REAL teta(iim + 1, jjm + 1, llm) ! température potentielle 
  REAL q(iim + 1, jjm + 1, llm, nqmx) ! champs advectés
  REAL ps(iim + 1, jjm + 1) ! pression au sol (Pa)
  REAL masse(iim + 1, jjm + 1, llm) ! masse d'air
  REAL phis(iim + 1, jjm + 1) ! géopotentiel au sol

  ! Variables pour le fichier histoire :
  REAL time_0 ! time in day, as a fraction of day, in [0, 1[

  ! Calendrier :
  LOGICAL:: true_calendar = .false. ! default value

  logical mask_v(iim + 1, jjm) 
  ! (mask for points in the "v" grid, first index is for longitude,
  ! second index is for latitude)

  namelist /main_nml/true_calendar

  !------------------------------------------------------------

  call new_unit(unit_nml)
  open(unit_nml, file="used_namelists", status="replace", action="write")

  CALL conf_gcm

  print *, "Enter namelist 'main_nml'."
  read (unit=*, nml=main_nml)
  write(unit_nml, nml=main_nml)

  ! Choix du calendrier :
  if (true_calendar) then
     call ioconf_calendar('gregorian')
  else
     call ioconf_calendar('360d')
  endif

  ! Initialisation des traceurs
  ! Choix du schéma pour l'advection dans le fichier "traceur.def" ou via INCA
  call iniadvtrac

  ! Lecture du fichier "start.nc" :
  CALL dynetat0(vcov, ucov, teta, q, masse, ps, phis, time_0)

  ! On remet le calendrier à zero si demandé :
  if (annee_ref /= anneeref .or. day_ref /= dayref) then
     print *, 'Attention : les dates initiales lues dans le fichier ' // &
          '"start" ne correspondent pas à celles lues dans "gcm.def".'
     if (raz_date) then
        print *, 'On réinitialise à la date lue dans "gcm.def".'
        annee_ref = anneeref
        day_ref = dayref
        day_ini = dayref
        itau_dyn = 0
        time_0 = 0.
     else
        print *, 'On garde les dates du fichier "start".'
     endif
  ELSE
     raz_date = .false.
  endif

  ! On recalcule éventuellement le pas de temps :
  zdtvr = daysec / REAL(day_step)
  IF (dtvr /= zdtvr) THEN
     print *, 'Warning: the time steps in the ".def" file and in ' // &
          '"start.nc" are different'
     print *, 'dtvr (from "start.nc") = ', dtvr
     print *, 'zdtvr (from ".def") = ', zdtvr
     print *, 'Using the value from the ".def" file.'
     dtvr = zdtvr
  ENDIF

  CALL iniconst 
  CALL inigeom ! initialisation de la géometrie
  CALL inifilr ! initialisation du filtre
  CALL inidissip
  call init_dyn_phy

  ! Initialisation de la physique :
  IF (iflag_phys == 1) THEN
     rlatd(1)=rlatu(1)
     rlatd(2:klon-1) = pack(spread(rlatu(2:jjm), 1, iim), .true.)
     rlatd(klon)= rlatu(jjm + 1)

     rlond(1)=0.
     rlond(2:klon-1) = pack(spread(rlonv(:iim), 2, jjm - 1), .true.)
     rlond(klon)= 0.

     cuphy = pack(cu_2d, dyn_phy)

     ! Construct a mask for points in the "v" grid:
     mask_v = .true.
     mask_v(2:, 1) = .false.
     mask_v(iim + 1, 2:) = .false.

     cvphy(:klon - 1) = pack(cv_2d, mask_v)
     cvphy(klon) = cv_2d(1, jjm)
     ! (that value of "cv_2d" is used twice in "cvphy")

     airephy = pack(aire_2d, dyn_phy)
     CALL suphec
     call yoethf
  ENDIF

  ! Initialisation des entrées-sorties :
  day_end = day_ini + nday
  print *, "day_ini = ", day_ini
  print *, "day_end = ", day_end

  CALL dynredem0("restart.nc", day_end, phis)
  CALL inithist(day_ref, annee_ref, zdtvr, nqmx, t_ops = iecri * daysec, &
       t_wrt = iecri * daysec)
  CALL initdynav(day_ref, annee_ref, zdtvr, nqmx, t_ops = iperiod * zdtvr, &
       t_wrt = periodav * daysec)
  call init_dynzon(dt_app = dtvr * iperiod)

  ! Choix des fréquences de stockage pour le hors-ligne :
  istdyn = day_step / 4 ! stockage toutes les 6 h = 1 jour / 4
  istphy = istdyn / iphysiq     

  ! Intégration temporelle du modèle :
  CALL leapfrog(ucov, vcov, teta, ps, masse, phis, q, time_0)

  close(unit_nml)
  call histclo
  print *, 'Simulation finished'
  print *, 'Everything is cool'

END PROGRAM gcm
1	guez	3	PROGRAM gcm
2
3	guez	36	! Authors: P. Le Van, L. Fairhead, F. Hourdin
4			! From "gcm.F", version 1.4, 2006/04/04 15:05:16
5	guez	3
6	guez	38	! General circulation model of LMD. Avec coordonnée verticale
7			! hybride, avec nouveaux opérateurs de dissipation "*" ("gradiv2",
8			! "divgrad2", "nxgraro2"). Possibilité de choisir le schéma pour
9			! l'advection de "q", en modifiant "iadv" dans "traceur.def".
10
11	guez	57	USE calendar, only: ioconf_calendar
12	guez	39	use comconst, only: daysec, cpp, dtvr, g, rad, r
13	guez	26	use comgeom, only: rlatu, aire_2d, cu_2d, cv_2d, rlonv
14	guez	37	use comgeomphy, only: airephy, cuphy, cvphy, rlatd, rlond
15	guez	3	use conf_gcm_m, only: day_step, iperiod, anneeref, dayref, iecri, iphysiq, &
16	guez	57	nday, raz_date, periodav, conf_gcm, iflag_phys
17	guez	26	use dimens_m, only: iim, jjm, llm, nqmx
18			use dimphy, only: klon
19	guez	25	use dynetat0_m, only: dynetat0, day_ini
20	guez	26	use dynredem0_m, only: dynredem0
21	guez	3	use grid_change, only: dyn_phy, init_dyn_phy
22	guez	61	use histclo_m, only: histclo
23	guez	18	use iniadvtrac_m, only: iniadvtrac
24	guez	26	use inidissip_m, only: inidissip
25	guez	54	use inifilr_m, only: inifilr
26	guez	26	use inigeom_m, only: inigeom
27			use initdynav_m, only: initdynav
28			use inithist_m, only: inithist
29	guez	57	use init_dynzon_m, only: init_dynzon
30			use jumble, only: new_unit
31	guez	3	use leapfrog_m, only: leapfrog
32	guez	37	use suphec_m, only: suphec
33	guez	26	use temps, only: day_ref, annee_ref, day_end, itau_dyn
34			use tracstoke, only: istdyn, istphy
35	guez	57	use unit_nml_m, only: unit_nml
36	guez	38	use yoethf_m, only: yoethf
37	guez	3
38			IMPLICIT NONE
39
40			REAL zdtvr ! time step for dynamics, in s
41
42			! Variables dynamiques :
43	guez	55	REAL ucov(iim + 1, jjm + 1, llm), vcov(iim + 1, jjm, llm) ! vent covariant
44	guez	43	REAL teta(iim + 1, jjm + 1, llm) ! température potentielle
45	guez	40	REAL q(iim + 1, jjm + 1, llm, nqmx) ! champs advectés
46	guez	39	REAL ps(iim + 1, jjm + 1) ! pression au sol (Pa)
47	guez	55	REAL masse(iim + 1, jjm + 1, llm) ! masse d'air
48	guez	7	REAL phis(iim + 1, jjm + 1) ! géopotentiel au sol
49	guez	3
50			! Variables pour le fichier histoire :
51	guez	25	REAL time_0 ! time in day, as a fraction of day, in [0, 1[
52	guez	3
53			! Calendrier :
54			LOGICAL:: true_calendar = .false. ! default value
55
56			logical mask_v(iim + 1, jjm)
57			! (mask for points in the "v" grid, first index is for longitude,
58			! second index is for latitude)
59
60			namelist /main_nml/true_calendar
61
62			!------------------------------------------------------------
63
64	guez	57	call new_unit(unit_nml)
65			open(unit_nml, file="used_namelists", status="replace", action="write")
66
67			CALL conf_gcm
68
69	guez	3	print *, "Enter namelist 'main_nml'."
70			read (unit=*, nml=main_nml)
71	guez	57	write(unit_nml, nml=main_nml)
72	guez	3
73			! Choix du calendrier :
74			if (true_calendar) then
75			call ioconf_calendar('gregorian')
76			else
77			call ioconf_calendar('360d')
78			endif
79
80			! Initialisation des traceurs
81			! Choix du schéma pour l'advection dans le fichier "traceur.def" ou via INCA
82	guez	23	call iniadvtrac
83	guez	3
84			! Lecture du fichier "start.nc" :
85			CALL dynetat0(vcov, ucov, teta, q, masse, ps, phis, time_0)
86
87	guez	36	! On remet le calendrier à zero si demandé :
88	guez	3	if (annee_ref /= anneeref .or. day_ref /= dayref) then
89			print *, 'Attention : les dates initiales lues dans le fichier ' // &
90			'"start" ne correspondent pas à celles lues dans "gcm.def".'
91	guez	15	if (raz_date) then
92	guez	3	print *, 'On réinitialise à la date lue dans "gcm.def".'
93			annee_ref = anneeref
94			day_ref = dayref
95			day_ini = dayref
96			itau_dyn = 0
97			time_0 = 0.
98	guez	15	else
99			print *, 'On garde les dates du fichier "start".'
100	guez	3	endif
101			ELSE
102	guez	15	raz_date = .false.
103	guez	3	endif
104
105	guez	36	! On recalcule éventuellement le pas de temps :
106	guez	3	zdtvr = daysec / REAL(day_step)
107			IF (dtvr /= zdtvr) THEN
108			print *, 'Warning: the time steps in the ".def" file and in ' // &
109			'"start.nc" are different'
110			print *, 'dtvr (from "start.nc") = ', dtvr
111			print *, 'zdtvr (from ".def") = ', zdtvr
112			print *, 'Using the value from the ".def" file.'
113			dtvr = zdtvr
114			ENDIF
115	guez	33
116	guez	36	CALL iniconst
117			CALL inigeom ! initialisation de la géometrie
118			CALL inifilr ! initialisation du filtre
119	guez	27	CALL inidissip
120	guez	3	call init_dyn_phy
121
122			! Initialisation de la physique :
123			IF (iflag_phys == 1) THEN
124	guez	37	rlatd(1)=rlatu(1)
125			rlatd(2:klon-1) = pack(spread(rlatu(2:jjm), 1, iim), .true.)
126			rlatd(klon)= rlatu(jjm + 1)
127	guez	3
128	guez	37	rlond(1)=0.
129			rlond(2:klon-1) = pack(spread(rlonv(:iim), 2, jjm - 1), .true.)
130			rlond(klon)= 0.
131	guez	3
132	guez	37	cuphy = pack(cu_2d, dyn_phy)
133	guez	3
134			! Construct a mask for points in the "v" grid:
135			mask_v = .true.
136			mask_v(2:, 1) = .false.
137			mask_v(iim + 1, 2:) = .false.
138
139	guez	37	cvphy(:klon - 1) = pack(cv_2d, mask_v)
140			cvphy(klon) = cv_2d(1, jjm)
141			! (that value of "cv_2d" is used twice in "cvphy")
142	guez	3
143	guez	37	airephy = pack(aire_2d, dyn_phy)
144			CALL suphec
145	guez	38	call yoethf
146	guez	3	ENDIF
147
148			! Initialisation des entrées-sorties :
149			day_end = day_ini + nday
150			print *, "day_ini = ", day_ini
151			print *, "day_end = ", day_end
152
153	guez	5	CALL dynredem0("restart.nc", day_end, phis)
154	guez	56	CALL inithist(day_ref, annee_ref, zdtvr, nqmx, t_ops = iecri * daysec, &
155			t_wrt = iecri * daysec)
156			CALL initdynav(day_ref, annee_ref, zdtvr, nqmx, t_ops = iperiod * zdtvr, &
157			t_wrt = periodav * daysec)
158	guez	57	call init_dynzon(dt_app = dtvr * iperiod)
159	guez	3
160			! Choix des fréquences de stockage pour le hors-ligne :
161	guez	36	istdyn = day_step / 4 ! stockage toutes les 6 h = 1 jour / 4
162	guez	3	istphy = istdyn / iphysiq
163
164			! Intégration temporelle du modèle :
165	guez	23	CALL leapfrog(ucov, vcov, teta, ps, masse, phis, q, time_0)
166	guez	3
167	guez	68	close(unit_nml)
168	guez	10	call histclo
169			print *, 'Simulation finished'
170			print *, 'Everything is cool'
171
172	guez	3	END PROGRAM gcm