libf/dyn3d/leapfrog.f90

module leapfrog_m

  IMPLICIT NONE

contains

  SUBROUTINE leapfrog(ucov, vcov, teta, ps, masse, phis, q, time_0)

    ! From dyn3d/leapfrog.F, version 1.6, 2005/04/13 08:58:34
    ! Authors: P. Le Van, L. Fairhead, F. Hourdin
    ! Matsuno-leapfrog scheme.

    use addfi_m, only: addfi
    USE calfis_m, ONLY: calfis
    USE com_io_dyn, ONLY: histaveid
    USE comconst, ONLY: daysec, dtphys, dtvr
    USE comgeom, ONLY: aire_2d, apoln, apols
    USE comvert, ONLY: ap, bp
    USE conf_gcm_m, ONLY: day_step, iconser, iperiod, iphysiq, nday, offline, &
         periodav
    USE dimens_m, ONLY: iim, jjm, llm, nqmx
    USE dynetat0_m, ONLY: day_ini
    use dynredem1_m, only: dynredem1
    USE exner_hyb_m, ONLY: exner_hyb
    use filtreg_m, only: filtreg
    USE guide_m, ONLY: guide
    use inidissip_m, only: idissip
    use integrd_m, only: integrd
    USE logic, ONLY: iflag_phys, ok_guide
    USE paramet_m, ONLY: ip1jmp1
    USE pressure_var, ONLY: p3d
    USE temps, ONLY: itau_dyn

    ! Variables dynamiques:
    REAL, intent(inout):: ucov(ip1jmp1, llm) ! vent covariant
    REAL, intent(inout):: vcov((iim + 1) * jjm, llm) ! vent covariant
    REAL, intent(inout):: teta(iim + 1, jjm + 1, llm) ! potential temperature
    REAL ps(iim + 1, jjm + 1) ! pression au sol, en Pa
    REAL masse(ip1jmp1, llm) ! masse d'air
    REAL phis(ip1jmp1) ! geopotentiel au sol
    REAL q(ip1jmp1, llm, nqmx) ! mass fractions of advected fields
    REAL, intent(in):: time_0

    ! Variables local to the procedure:

    ! Variables dynamiques:

    REAL pks(ip1jmp1) ! exner au sol
    REAL pk(iim + 1, jjm + 1, llm) ! exner au milieu des couches
    REAL pkf(ip1jmp1, llm) ! exner filt.au milieu des couches
    REAL phi(ip1jmp1, llm) ! geopotential
    REAL w(ip1jmp1, llm) ! vitesse verticale

    ! variables dynamiques intermediaire pour le transport
    REAL pbaru(ip1jmp1, llm), pbarv((iim + 1) * jjm, llm) !flux de masse

    ! variables dynamiques au pas - 1
    REAL vcovm1((iim + 1) * jjm, llm), ucovm1(ip1jmp1, llm)
    REAL tetam1(iim + 1, jjm + 1, llm), psm1(iim + 1, jjm + 1)
    REAL massem1(ip1jmp1, llm)

    ! tendances dynamiques
    REAL dv((iim + 1) * jjm, llm), du(ip1jmp1, llm)
    REAL dteta(ip1jmp1, llm), dq(ip1jmp1, llm, nqmx), dp(ip1jmp1)

    ! tendances de la dissipation
    REAL dvdis((iim + 1) * jjm, llm), dudis(ip1jmp1, llm)
    REAL dtetadis(iim + 1, jjm + 1, llm)

    ! tendances physiques
    REAL dvfi((iim + 1) * jjm, llm), dufi(ip1jmp1, llm)
    REAL dtetafi(ip1jmp1, llm), dqfi(ip1jmp1, llm, nqmx), dpfi(ip1jmp1)

    ! variables pour le fichier histoire

    INTEGER itau ! index of the time step of the dynamics, starts at 0
    INTEGER itaufin
    REAL time ! time of day, as a fraction of day length
    real finvmaold(ip1jmp1, llm)
    INTEGER l
    REAL rdayvrai, rdaym_ini

    ! Variables test conservation energie
    REAL ecin(iim + 1, jjm + 1, llm), ecin0(iim + 1, jjm + 1, llm)
    ! Tendance de la temp. potentiel d (theta) / d t due a la 
    ! tansformation d'energie cinetique en energie thermique
    ! cree par la dissipation
    REAL dtetaecdt(iim + 1, jjm + 1, llm)
    REAL vcont((iim + 1) * jjm, llm), ucont(ip1jmp1, llm)
    logical leapf
    real dt

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

    print *, "Call sequence information: leapfrog"

    itaufin = nday * day_step
    ! "day_step" is a multiple of "iperiod", therefore "itaufin" is one too

    dq = 0.

    ! On initialise la pression et la fonction d'Exner :
    forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
    CALL exner_hyb(ps, p3d, pks, pk, pkf)

    ! Début de l'integration temporelle :
    do itau = 0, itaufin - 1
       leapf = mod(itau, iperiod) /= 0
       if (leapf) then
          dt = 2 * dtvr
       else
          ! Matsuno
          dt = dtvr
          if (ok_guide .and. (itaufin - itau - 1) * dtvr > 21600.) &
               call guide(itau, ucov, vcov, teta, q, masse, ps)
          vcovm1 = vcov
          ucovm1 = ucov
          tetam1 = teta
          massem1 = masse
          psm1 = ps
          finvmaold = masse
          CALL filtreg(finvmaold, jjm + 1, llm, - 2, 2, .TRUE., 1)
       end if

       ! Calcul des tendances dynamiques:
       CALL geopot(ip1jmp1, teta, pk, pks, phis, phi)
       CALL caldyn(itau, ucov, vcov, teta, ps, masse, pk, pkf, phis, phi, &
            MOD(itau, iconser) == 0, du, dv, dteta, dp, w, pbaru, pbarv, &
            time_0)

       ! Calcul des tendances advection des traceurs (dont l'humidité)
       CALL caladvtrac(q, pbaru, pbarv, p3d, masse, dq, teta, pk)

       ! Stokage du flux de masse pour traceurs offline:
       IF (offline) CALL fluxstokenc(pbaru, pbarv, masse, teta, phi, phis, &
            dtvr, itau)

       ! integrations dynamique et traceurs:
       CALL integrd(2, vcovm1, ucovm1, tetam1, psm1, massem1, dv, du, dteta, &
            dp, vcov, ucov, teta, q, ps, masse, finvmaold, leapf, dt)

       if (.not. leapf) then
          ! Matsuno backward
          forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
          CALL exner_hyb(ps, p3d, pks, pk, pkf)

          ! Calcul des tendances dynamiques:
          CALL geopot(ip1jmp1, teta, pk, pks, phis, phi)
          CALL caldyn(itau + 1, ucov, vcov, teta, ps, masse, pk, pkf, phis, &
               phi, .false., du, dv, dteta, dp, w, pbaru, pbarv, time_0)

          ! integrations dynamique et traceurs:
          CALL integrd(2, vcovm1, ucovm1, tetam1, psm1, massem1, dv, du, &
               dteta, dp, vcov, ucov, teta, q, ps, masse, finvmaold, .false., &
               dtvr)
       end if

       IF (MOD(itau + 1, iphysiq) == 0 .AND. iflag_phys /= 0) THEN
          ! calcul des tendances physiques:

          forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
          CALL exner_hyb(ps, p3d, pks, pk, pkf)

          rdaym_ini = itau * dtvr / daysec
          rdayvrai = rdaym_ini + day_ini
          time = REAL(mod(itau, day_step)) / day_step + time_0
          IF (time > 1.) time = time - 1.

          CALL calfis(rdayvrai, time, ucov, vcov, teta, q, masse, ps, pk, &
               phis, phi, du, dv, dteta, dq, w, dufi, dvfi, dtetafi, dqfi, &
               dpfi, lafin=itau+1==itaufin)

          ! ajout des tendances physiques:
          CALL addfi(nqmx, dtphys, ucov, vcov, teta, q, ps, dufi, dvfi, &
               dtetafi, dqfi, dpfi)
       ENDIF

       forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
       CALL exner_hyb(ps, p3d, pks, pk, pkf)

       IF (MOD(itau + 1, idissip) == 0) THEN
          ! dissipation horizontale et verticale des petites echelles:

          ! calcul de l'energie cinetique avant dissipation
          call covcont(llm, ucov, vcov, ucont, vcont)
          call enercin(vcov, ucov, vcont, ucont, ecin0)

          ! dissipation
          CALL dissip(vcov, ucov, teta, p3d, dvdis, dudis, dtetadis)
          ucov=ucov + dudis
          vcov=vcov + dvdis

          ! On rajoute la tendance due à la transformation Ec -> E
          ! thermique créée lors de la dissipation
          call covcont(llm, ucov, vcov, ucont, vcont)
          call enercin(vcov, ucov, vcont, ucont, ecin)
          dtetaecdt= (ecin0 - ecin) / pk
          dtetadis=dtetadis + dtetaecdt
          teta=teta + dtetadis

          ! Calcul de la valeur moyenne aux pôles :
          forall (l = 1: llm)
             teta(:, 1, l) = SUM(aire_2d(:iim, 1) * teta(:iim, 1, l)) &
                  / apoln
             teta(:, jjm + 1, l) = SUM(aire_2d(:iim, jjm+1) &
                  * teta(:iim, jjm + 1, l)) / apols
          END forall

          ps(:, 1) = SUM(aire_2d(:iim, 1) * ps(:iim, 1)) / apoln
          ps(:, jjm + 1) = SUM(aire_2d(:iim, jjm+1) * ps(:iim, jjm + 1)) &
               / apols
       END IF

       IF (MOD(itau + 1, iperiod) == 0) THEN
          ! ecriture du fichier histoire moyenne:
          CALL writedynav(histaveid, nqmx, itau + 1, vcov, ucov, teta, pk, &
               phi, q, masse, ps, phis)
          call bilan_dyn(2, dtvr * iperiod, dtvr * day_step * periodav, ps, &
               masse, pk, pbaru, pbarv, teta, phi, ucov, vcov, q)
       ENDIF
    end do

    CALL dynredem1("restart.nc", vcov, ucov, teta, q, masse, ps, &
         itau=itau_dyn+itaufin)

    ! Calcul des tendances dynamiques:
    CALL geopot(ip1jmp1, teta, pk, pks, phis, phi)
    CALL caldyn(itaufin, ucov, vcov, teta, ps, masse, pk, pkf, phis, phi, &
         MOD(itaufin, iconser) == 0, du, dv, dteta, dp, w, pbaru, pbarv, &
         time_0)

  END SUBROUTINE leapfrog

end module leapfrog_m
1	module leapfrog_m
2
3	IMPLICIT NONE
4
5	contains
6
7	SUBROUTINE leapfrog(ucov, vcov, teta, ps, masse, phis, q, time_0)
8
9	! From dyn3d/leapfrog.F, version 1.6, 2005/04/13 08:58:34
10	! Authors: P. Le Van, L. Fairhead, F. Hourdin
11	! Matsuno-leapfrog scheme.
12
13	use addfi_m, only: addfi
14	USE calfis_m, ONLY: calfis
15	USE com_io_dyn, ONLY: histaveid
16	USE comconst, ONLY: daysec, dtphys, dtvr
17	USE comgeom, ONLY: aire_2d, apoln, apols
18	USE comvert, ONLY: ap, bp
19	USE conf_gcm_m, ONLY: day_step, iconser, iperiod, iphysiq, nday, offline, &
20	periodav
21	USE dimens_m, ONLY: iim, jjm, llm, nqmx
22	USE dynetat0_m, ONLY: day_ini
23	use dynredem1_m, only: dynredem1
24	USE exner_hyb_m, ONLY: exner_hyb
25	use filtreg_m, only: filtreg
26	USE guide_m, ONLY: guide
27	use inidissip_m, only: idissip
28	use integrd_m, only: integrd
29	USE logic, ONLY: iflag_phys, ok_guide
30	USE paramet_m, ONLY: ip1jmp1
31	USE pressure_var, ONLY: p3d
32	USE temps, ONLY: itau_dyn
33
34	! Variables dynamiques:
35	REAL, intent(inout):: ucov(ip1jmp1, llm) ! vent covariant
36	REAL, intent(inout):: vcov((iim + 1) * jjm, llm) ! vent covariant
37	REAL, intent(inout):: teta(iim + 1, jjm + 1, llm) ! potential temperature
38	REAL ps(iim + 1, jjm + 1) ! pression au sol, en Pa
39	REAL masse(ip1jmp1, llm) ! masse d'air
40	REAL phis(ip1jmp1) ! geopotentiel au sol
41	REAL q(ip1jmp1, llm, nqmx) ! mass fractions of advected fields
42	REAL, intent(in):: time_0
43
44	! Variables local to the procedure:
45
46	! Variables dynamiques:
47
48	REAL pks(ip1jmp1) ! exner au sol
49	REAL pk(iim + 1, jjm + 1, llm) ! exner au milieu des couches
50	REAL pkf(ip1jmp1, llm) ! exner filt.au milieu des couches
51	REAL phi(ip1jmp1, llm) ! geopotential
52	REAL w(ip1jmp1, llm) ! vitesse verticale
53
54	! variables dynamiques intermediaire pour le transport
55	REAL pbaru(ip1jmp1, llm), pbarv((iim + 1) * jjm, llm) !flux de masse
56
57	! variables dynamiques au pas - 1
58	REAL vcovm1((iim + 1) * jjm, llm), ucovm1(ip1jmp1, llm)
59	REAL tetam1(iim + 1, jjm + 1, llm), psm1(iim + 1, jjm + 1)
60	REAL massem1(ip1jmp1, llm)
61
62	! tendances dynamiques
63	REAL dv((iim + 1) * jjm, llm), du(ip1jmp1, llm)
64	REAL dteta(ip1jmp1, llm), dq(ip1jmp1, llm, nqmx), dp(ip1jmp1)
65
66	! tendances de la dissipation
67	REAL dvdis((iim + 1) * jjm, llm), dudis(ip1jmp1, llm)
68	REAL dtetadis(iim + 1, jjm + 1, llm)
69
70	! tendances physiques
71	REAL dvfi((iim + 1) * jjm, llm), dufi(ip1jmp1, llm)
72	REAL dtetafi(ip1jmp1, llm), dqfi(ip1jmp1, llm, nqmx), dpfi(ip1jmp1)
73
74	! variables pour le fichier histoire
75
76	INTEGER itau ! index of the time step of the dynamics, starts at 0
77	INTEGER itaufin
78	REAL time ! time of day, as a fraction of day length
79	real finvmaold(ip1jmp1, llm)
80	INTEGER l
81	REAL rdayvrai, rdaym_ini
82
83	! Variables test conservation energie
84	REAL ecin(iim + 1, jjm + 1, llm), ecin0(iim + 1, jjm + 1, llm)
85	! Tendance de la temp. potentiel d (theta) / d t due a la
86	! tansformation d'energie cinetique en energie thermique
87	! cree par la dissipation
88	REAL dtetaecdt(iim + 1, jjm + 1, llm)
89	REAL vcont((iim + 1) * jjm, llm), ucont(ip1jmp1, llm)
90	logical leapf
91	real dt
92
93	!---------------------------------------------------
94
95	print *, "Call sequence information: leapfrog"
96
97	itaufin = nday * day_step
98	! "day_step" is a multiple of "iperiod", therefore "itaufin" is one too
99
100	dq = 0.
101
102	! On initialise la pression et la fonction d'Exner :
103	forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
104	CALL exner_hyb(ps, p3d, pks, pk, pkf)
105
106	! Début de l'integration temporelle :
107	do itau = 0, itaufin - 1
108	leapf = mod(itau, iperiod) /= 0
109	if (leapf) then
110	dt = 2 * dtvr
111	else
112	! Matsuno
113	dt = dtvr
114	if (ok_guide .and. (itaufin - itau - 1) * dtvr > 21600.) &
115	call guide(itau, ucov, vcov, teta, q, masse, ps)
116	vcovm1 = vcov
117	ucovm1 = ucov
118	tetam1 = teta
119	massem1 = masse
120	psm1 = ps
121	finvmaold = masse
122	CALL filtreg(finvmaold, jjm + 1, llm, - 2, 2, .TRUE., 1)
123	end if
124
125	! Calcul des tendances dynamiques:
126	CALL geopot(ip1jmp1, teta, pk, pks, phis, phi)
127	CALL caldyn(itau, ucov, vcov, teta, ps, masse, pk, pkf, phis, phi, &
128	MOD(itau, iconser) == 0, du, dv, dteta, dp, w, pbaru, pbarv, &
129	time_0)
130
131	! Calcul des tendances advection des traceurs (dont l'humidité)
132	CALL caladvtrac(q, pbaru, pbarv, p3d, masse, dq, teta, pk)
133
134	! Stokage du flux de masse pour traceurs offline:
135	IF (offline) CALL fluxstokenc(pbaru, pbarv, masse, teta, phi, phis, &
136	dtvr, itau)
137
138	! integrations dynamique et traceurs:
139	CALL integrd(2, vcovm1, ucovm1, tetam1, psm1, massem1, dv, du, dteta, &
140	dp, vcov, ucov, teta, q, ps, masse, finvmaold, leapf, dt)
141
142	if (.not. leapf) then
143	! Matsuno backward
144	forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
145	CALL exner_hyb(ps, p3d, pks, pk, pkf)
146
147	! Calcul des tendances dynamiques:
148	CALL geopot(ip1jmp1, teta, pk, pks, phis, phi)
149	CALL caldyn(itau + 1, ucov, vcov, teta, ps, masse, pk, pkf, phis, &
150	phi, .false., du, dv, dteta, dp, w, pbaru, pbarv, time_0)
151
152	! integrations dynamique et traceurs:
153	CALL integrd(2, vcovm1, ucovm1, tetam1, psm1, massem1, dv, du, &
154	dteta, dp, vcov, ucov, teta, q, ps, masse, finvmaold, .false., &
155	dtvr)
156	end if
157
158	IF (MOD(itau + 1, iphysiq) == 0 .AND. iflag_phys /= 0) THEN
159	! calcul des tendances physiques:
160
161	forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
162	CALL exner_hyb(ps, p3d, pks, pk, pkf)
163
164	rdaym_ini = itau * dtvr / daysec
165	rdayvrai = rdaym_ini + day_ini
166	time = REAL(mod(itau, day_step)) / day_step + time_0
167	IF (time > 1.) time = time - 1.
168
169	CALL calfis(rdayvrai, time, ucov, vcov, teta, q, masse, ps, pk, &
170	phis, phi, du, dv, dteta, dq, w, dufi, dvfi, dtetafi, dqfi, &
171	dpfi, lafin=itau+1==itaufin)
172
173	! ajout des tendances physiques:
174	CALL addfi(nqmx, dtphys, ucov, vcov, teta, q, ps, dufi, dvfi, &
175	dtetafi, dqfi, dpfi)
176	ENDIF
177
178	forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
179	CALL exner_hyb(ps, p3d, pks, pk, pkf)
180
181	IF (MOD(itau + 1, idissip) == 0) THEN
182	! dissipation horizontale et verticale des petites echelles:
183
184	! calcul de l'energie cinetique avant dissipation
185	call covcont(llm, ucov, vcov, ucont, vcont)
186	call enercin(vcov, ucov, vcont, ucont, ecin0)
187
188	! dissipation
189	CALL dissip(vcov, ucov, teta, p3d, dvdis, dudis, dtetadis)
190	ucov=ucov + dudis
191	vcov=vcov + dvdis
192
193	! On rajoute la tendance due à la transformation Ec -> E
194	! thermique créée lors de la dissipation
195	call covcont(llm, ucov, vcov, ucont, vcont)
196	call enercin(vcov, ucov, vcont, ucont, ecin)
197	dtetaecdt= (ecin0 - ecin) / pk
198	dtetadis=dtetadis + dtetaecdt
199	teta=teta + dtetadis
200
201	! Calcul de la valeur moyenne aux pôles :
202	forall (l = 1: llm)
203	teta(:, 1, l) = SUM(aire_2d(:iim, 1) * teta(:iim, 1, l)) &
204	/ apoln
205	teta(:, jjm + 1, l) = SUM(aire_2d(:iim, jjm+1) &
206	* teta(:iim, jjm + 1, l)) / apols
207	END forall
208
209	ps(:, 1) = SUM(aire_2d(:iim, 1) * ps(:iim, 1)) / apoln
210	ps(:, jjm + 1) = SUM(aire_2d(:iim, jjm+1) * ps(:iim, jjm + 1)) &
211	/ apols
212	END IF
213
214	IF (MOD(itau + 1, iperiod) == 0) THEN
215	! ecriture du fichier histoire moyenne:
216	CALL writedynav(histaveid, nqmx, itau + 1, vcov, ucov, teta, pk, &
217	phi, q, masse, ps, phis)
218	call bilan_dyn(2, dtvr * iperiod, dtvr * day_step * periodav, ps, &
219	masse, pk, pbaru, pbarv, teta, phi, ucov, vcov, q)
220	ENDIF
221	end do
222
223	CALL dynredem1("restart.nc", vcov, ucov, teta, q, masse, ps, &
224	itau=itau_dyn+itaufin)
225
226	! Calcul des tendances dynamiques:
227	CALL geopot(ip1jmp1, teta, pk, pks, phis, phi)
228	CALL caldyn(itaufin, ucov, vcov, teta, ps, masse, pk, pkf, phis, phi, &
229	MOD(itaufin, iconser) == 0, du, dv, dteta, dp, w, pbaru, pbarv, &
230	time_0)
231
232	END SUBROUTINE leapfrog
233
234	end module leapfrog_m