dyn3d/Guide/guide.f

MODULE guide_m

  ! From dyn3d/guide.F, version 1.3 2005/05/25 13:10:09
  ! and dyn3d/guide.h, version 1.1.1.1 2004/05/19 12:53:06

  IMPLICIT NONE

CONTAINS

  SUBROUTINE guide(itau, ucov, vcov, teta, q, ps)

    ! Author: F.Hourdin

    USE comconst, ONLY: cpp, kappa
    USE comgeom, ONLY: rlatu, rlatv
    USE conf_gcm_m, ONLY: day_step
    use conf_guide_m, only: guide_u, guide_v, guide_t, guide_q, ncep, &
         ini_anal, tau_min_u, tau_max_u, tau_min_v, tau_max_v, tau_min_t, &
         tau_max_t, tau_min_q, tau_max_q, online, factt
    USE dimens_m, ONLY: iim, jjm, llm
    USE disvert_m, ONLY: ap, bp, preff
    USE exner_hyb_m, ONLY: exner_hyb
    use init_tau2alpha_m, only: init_tau2alpha
    use netcdf, only: nf90_nowrite
    use netcdf95, only: nf95_close, nf95_inq_dimid, nf95_inquire_dimension, &
         nf95_open
    use nr_util, only: pi
    USE paramet_m, ONLY: iip1, ip1jmp1, jjp1, llmp1
    USE q_sat_m, ONLY: q_sat
    use read_reanalyse_m, only: read_reanalyse
    use serre, only: grossismx, grossismy
    use tau2alpha_m, only: tau2alpha
    use writefield_m, only: writefield

    INTEGER, INTENT(IN):: itau
    REAL, intent(inout):: ucov(:, :, :) ! (iim + 1, jjm + 1, llm) vent covariant
    REAL, intent(inout):: vcov(:, :, :) ! (iim + 1, jjm, llm) ! vent covariant

    REAL, intent(inout):: teta(:, :, :) ! (iim + 1, jjm + 1, llm)
    ! température potentielle 

    REAL, intent(inout):: q(:, :, :) ! (iim + 1, jjm + 1, llm)
    REAL, intent(in):: ps(:, :) ! (iim + 1, jjm + 1) pression au sol

    ! Local:

    ! variables dynamiques pour les réanalyses

    REAL, save:: ucovrea1(iim + 1, jjm + 1, llm), vcovrea1(iim + 1, jjm, llm)
    ! vents covariants reanalyses

    REAL, save:: tetarea1(iim + 1, jjm + 1, llm) ! temp pot reales
    REAL, save:: qrea1(iim + 1, jjm + 1, llm) ! temp pot reales

    REAL, save:: ucovrea2(iim + 1, jjm + 1, llm), vcovrea2(iim + 1, jjm, llm)
    ! vents covariants reanalyses

    REAL, save:: tetarea2(iim + 1, jjm + 1, llm) ! temp pot reales
    REAL, save:: qrea2(iim + 1, jjm + 1, llm) ! temp pot reales
    REAL, save:: masserea2(ip1jmp1, llm) ! masse

    ! alpha détermine la part des injections de données à chaque étape
    ! alpha=0 signifie pas d'injection
    ! alpha=1 signifie injection totale
    REAL, save:: alpha_q(iim + 1, jjm + 1)
    REAL, save:: alpha_t(iim + 1, jjm + 1)
    REAL, save:: alpha_u(iim + 1, jjm + 1), alpha_v(iim + 1, jjm)

    INTEGER, save:: step_rea, count_no_rea

    INTEGER l
    INTEGER ncid, dimid
    REAL tau
    INTEGER, SAVE:: nlev

    ! TEST SUR QSAT
    REAL p(iim + 1, jjm + 1, llmp1)
    real pk(iim + 1, jjm + 1, llm), pks(iim + 1, jjm + 1)
    REAL qsat(iim + 1, jjm + 1, llm)

    REAL dxdys(iip1, jjp1), dxdyu(iip1, jjp1), dxdyv(iip1, jjm)

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

    !!PRINT *, 'Call sequence information: guide'

    first_call: IF (itau == 0) THEN
       IF (online) THEN
          IF (abs(grossismx - 1.) < 0.1 .OR. abs(grossismy - 1.) < 0.1) THEN
             ! grille regulière
             if (guide_u) alpha_u = factt / tau_max_u
             if (guide_v) alpha_v = factt / tau_max_v
             if (guide_t) alpha_t = factt / tau_max_t
             if (guide_q) alpha_q = factt / tau_max_q
          else
             call init_tau2alpha(dxdys, dxdyu, dxdyv)

             if (guide_u) then
                CALL tau2alpha(dxdyu, rlatu, tau_min_u, tau_max_u, alpha_u)
                CALL writefield("alpha_u", alpha_u)
             end if

             if (guide_v) then
                CALL tau2alpha(dxdyv, rlatv, tau_min_v, tau_max_v, alpha_v)
                CALL writefield("alpha_v", alpha_v)
             end if

             if (guide_t) then
                CALL tau2alpha(dxdys, rlatu, tau_min_t, tau_max_t, alpha_t)
                CALL writefield("alpha_t", alpha_t)
             end if

             if (guide_q)  then
                CALL tau2alpha(dxdys, rlatu, tau_min_q, tau_max_q, alpha_q)
                CALL writefield("alpha_q", alpha_q)
             end if
          end IF
       ELSE
          ! Cas où on force exactement par les variables analysées
          if (guide_u) alpha_u = 1.
          if (guide_v) alpha_v = 1.
          if (guide_t) alpha_t = 1.
          if (guide_q) alpha_q = 1.
       END IF

       step_rea = 1
       count_no_rea = 0

       ! lecture d'un fichier netcdf pour determiner le nombre de niveaux :

       if (guide_u) then
          call nf95_open('u.nc',Nf90_NOWRITe,ncid)
       else if (guide_v) then
          call nf95_open('v.nc',nf90_nowrite,ncid)
       else if (guide_T) then
          call nf95_open('T.nc',nf90_nowrite,ncid)
       else
          call nf95_open('hur.nc',nf90_nowrite, ncid)
       end if

       IF (ncep) THEN
          call nf95_inq_dimid(ncid, 'LEVEL', dimid)
       ELSE
          call nf95_inq_dimid(ncid, 'PRESSURE', dimid)
       END IF
       call nf95_inquire_dimension(ncid, dimid, nclen=nlev)
       PRINT *, 'nlev = ', nlev
       call nf95_close(ncid)

       ! Lecture du premier état des réanalyses :
       CALL read_reanalyse(1, ps, ucovrea2, vcovrea2, tetarea2, qrea2, &
            masserea2, nlev)
       qrea2 = max(qrea2, 0.1)
    END IF first_call

    ! IMPORTATION DES VENTS, PRESSION ET TEMPERATURE REELS:

    ! Nudging fields are given 4 times per day:
    IF (mod(itau, day_step / 4) == 0) THEN
       vcovrea1 = vcovrea2
       ucovrea1 = ucovrea2
       tetarea1 = tetarea2
       qrea1 = qrea2

       PRINT *, 'Lecture fichiers guidage, pas ', step_rea, 'apres ', &
            count_no_rea, ' non lectures'
       step_rea = step_rea + 1
       CALL read_reanalyse(step_rea, ps, ucovrea2, vcovrea2, tetarea2, qrea2, &
            masserea2, nlev)
       qrea2 = max(qrea2, 0.1)

       if (guide_u) then
          CALL writefield("ucov", ucov)
          CALL writefield("ucovrea2", ucovrea2)
       end if

       if (guide_t) then
          CALL writefield("teta", teta)
          CALL writefield("tetarea2", tetarea2)
       end if

       if (guide_q) then
          CALL writefield("qrea2", qrea2)
          CALL writefield("q", q)
       end if
    ELSE
       count_no_rea = count_no_rea + 1
    END IF

    ! Guidage

    tau = mod(real(itau) / real(day_step / 4), 1.)

    ! x_gcm = a * x_gcm + (1 - a) * x_reanalyses

    IF (guide_u) THEN
       IF (itau == 0 .AND. ini_anal) then
          ucov = ucovrea1
       else
          forall (l = 1: llm) ucov(:, :, l) = (1. - alpha_u) * ucov(:, :, l) &
               + alpha_u * ((1. - tau) * ucovrea1(:, :, l) &
               + tau * ucovrea2(:, :, l))
       end IF
    END IF

    IF (guide_t) THEN
       IF (itau == 0 .AND. ini_anal) then
          teta = tetarea1
       else
          forall (l = 1: llm) teta(:, :, l) = (1. - alpha_t) * teta(:, :, l) &
               + alpha_t * ((1. - tau) * tetarea1(:, :, l) &
               + tau * tetarea2(:, :, l))
       end IF
    END IF

    IF (guide_q) THEN
       ! Calcul de l'humidité saturante :
       forall (l = 1: llm + 1) p(:, :, l) = ap(l) + bp(l) * ps
       CALL exner_hyb(ps, p, pks, pk)
       qsat = q_sat(pk * teta / cpp, preff * (pk / cpp)**(1. / kappa))

       ! humidité relative en % -> humidité spécifique
       IF (itau == 0 .AND. ini_anal) then
          q = qsat * qrea1 * 0.01
       else
          forall (l = 1: llm) q(:, :, l) = (1. - alpha_q) * q(:, :, l) &
               + alpha_q * (qsat(:, :, l) * ((1. - tau) * qrea1(:, :, l) &
               + tau * qrea2(:, :, l)) * 0.01)
       end IF
    END IF

    IF (guide_v) THEN
       IF (itau == 0 .AND. ini_anal) then
          vcov = vcovrea1
       else
          forall (l = 1: llm) vcov(:, :, l) = (1. - alpha_v) * vcov(:, :, l) &
               + alpha_v * ((1. - tau) * vcovrea1(:, :, l) &
               + tau * vcovrea2(:, :, l))
       end IF
    END IF

  END SUBROUTINE guide

END MODULE guide_m
1	guez	20	MODULE guide_m
2	guez	3
3	guez	29	! From dyn3d/guide.F, version 1.3 2005/05/25 13:10:09
4			! and dyn3d/guide.h, version 1.1.1.1 2004/05/19 12:53:06
5	guez	3
6	guez	37	IMPLICIT NONE
7
8	guez	20	CONTAINS
9	guez	3
10	guez	102	SUBROUTINE guide(itau, ucov, vcov, teta, q, ps)
11	guez	3
12	guez	29	! Author: F.Hourdin
13	guez	3
14	guez	115	USE comconst, ONLY: cpp, kappa
15			USE comgeom, ONLY: rlatu, rlatv
16			USE conf_gcm_m, ONLY: day_step
17			use conf_guide_m, only: guide_u, guide_v, guide_t, guide_q, ncep, &
18			ini_anal, tau_min_u, tau_max_u, tau_min_v, tau_max_v, tau_min_t, &
19			tau_max_t, tau_min_q, tau_max_q, online, factt
20	guez	88	USE dimens_m, ONLY: iim, jjm, llm
21	guez	135	USE disvert_m, ONLY: ap, bp, preff
22	guez	83	USE exner_hyb_m, ONLY: exner_hyb
23	guez	115	use init_tau2alpha_m, only: init_tau2alpha
24	guez	107	use netcdf, only: nf90_nowrite
25			use netcdf95, only: nf95_close, nf95_inq_dimid, nf95_inquire_dimension, &
26			nf95_open
27	guez	39	use nr_util, only: pi
28	guez	103	USE paramet_m, ONLY: iip1, ip1jmp1, jjp1, llmp1
29	guez	83	USE q_sat_m, ONLY: q_sat
30	guez	88	use read_reanalyse_m, only: read_reanalyse
31	guez	115	use serre, only: grossismx, grossismy
32	guez	109	use tau2alpha_m, only: tau2alpha
33	guez	108	use writefield_m, only: writefield
34	guez	3
35	guez	83	INTEGER, INTENT(IN):: itau
36	guez	102	REAL, intent(inout):: ucov(:, :, :) ! (iim + 1, jjm + 1, llm) vent covariant
37			REAL, intent(inout):: vcov(:, :, :) ! (iim + 1, jjm, llm) ! vent covariant
38
39	guez	108	REAL, intent(inout):: teta(:, :, :) ! (iim + 1, jjm + 1, llm)
40			! température potentielle
41
42			REAL, intent(inout):: q(:, :, :) ! (iim + 1, jjm + 1, llm)
43	guez	88	REAL, intent(in):: ps(:, :) ! (iim + 1, jjm + 1) pression au sol
44	guez	3
45	guez	83	! Local:
46
47	guez	108	! variables dynamiques pour les réanalyses
48	guez	102
49			REAL, save:: ucovrea1(iim + 1, jjm + 1, llm), vcovrea1(iim + 1, jjm, llm)
50			! vents covariants reanalyses
51
52	guez	90	REAL, save:: tetarea1(iim + 1, jjm + 1, llm) ! temp pot reales
53			REAL, save:: qrea1(iim + 1, jjm + 1, llm) ! temp pot reales
54	guez	102
55			REAL, save:: ucovrea2(iim + 1, jjm + 1, llm), vcovrea2(iim + 1, jjm, llm)
56			! vents covariants reanalyses
57
58	guez	90	REAL, save:: tetarea2(iim + 1, jjm + 1, llm) ! temp pot reales
59			REAL, save:: qrea2(iim + 1, jjm + 1, llm) ! temp pot reales
60	guez	44	REAL, save:: masserea2(ip1jmp1, llm) ! masse
61	guez	3
62	guez	116	! alpha détermine la part des injections de données à chaque étape
63	guez	112	! alpha=0 signifie pas d'injection
64			! alpha=1 signifie injection totale
65	guez	90	REAL, save:: alpha_q(iim + 1, jjm + 1)
66	guez	103	REAL, save:: alpha_t(iim + 1, jjm + 1)
67	guez	102	REAL, save:: alpha_u(iim + 1, jjm + 1), alpha_v(iim + 1, jjm)
68
69	guez	44	INTEGER, save:: step_rea, count_no_rea
70	guez	3
71	guez	115	INTEGER l
72	guez	108	INTEGER ncid, dimid
73	guez	102	REAL tau
74	guez	44	INTEGER, SAVE:: nlev
75	guez	3
76	guez	44	! TEST SUR QSAT
77	guez	90	REAL p(iim + 1, jjm + 1, llmp1)
78			real pk(iim + 1, jjm + 1, llm), pks(iim + 1, jjm + 1)
79			REAL qsat(iim + 1, jjm + 1, llm)
80	guez	3
81	guez	115	REAL dxdys(iip1, jjp1), dxdyu(iip1, jjp1), dxdyv(iip1, jjm)
82
83	guez	29	!-----------------------------------------------------------------------
84	guez	3
85	guez	108	!!PRINT *, 'Call sequence information: guide'
86	guez	3
87	guez	102	first_call: IF (itau == 0) THEN
88			IF (online) THEN
89	guez	115	IF (abs(grossismx - 1.) < 0.1 .OR. abs(grossismy - 1.) < 0.1) THEN
90			! grille regulière
91			if (guide_u) alpha_u = factt / tau_max_u
92			if (guide_v) alpha_v = factt / tau_max_v
93			if (guide_t) alpha_t = factt / tau_max_t
94			if (guide_q) alpha_q = factt / tau_max_q
95			else
96			call init_tau2alpha(dxdys, dxdyu, dxdyv)
97	guez	3
98	guez	115	if (guide_u) then
99			CALL tau2alpha(dxdyu, rlatu, tau_min_u, tau_max_u, alpha_u)
100			CALL writefield("alpha_u", alpha_u)
101			end if
102	guez	3
103	guez	115	if (guide_v) then
104			CALL tau2alpha(dxdyv, rlatv, tau_min_v, tau_max_v, alpha_v)
105			CALL writefield("alpha_v", alpha_v)
106			end if
107	guez	3
108	guez	115	if (guide_t) then
109			CALL tau2alpha(dxdys, rlatu, tau_min_t, tau_max_t, alpha_t)
110			CALL writefield("alpha_t", alpha_t)
111			end if
112
113			if (guide_q) then
114			CALL tau2alpha(dxdys, rlatu, tau_min_q, tau_max_q, alpha_q)
115			CALL writefield("alpha_q", alpha_q)
116			end if
117			end IF
118	guez	102	ELSE
119	guez	107	! Cas où on force exactement par les variables analysées
120	guez	115	if (guide_u) alpha_u = 1.
121			if (guide_v) alpha_v = 1.
122			if (guide_t) alpha_t = 1.
123	guez	112	if (guide_q) alpha_q = 1.
124	guez	102	END IF
125	guez	3
126	guez	102	step_rea = 1
127			count_no_rea = 0
128	guez	3
129	guez	115	! lecture d'un fichier netcdf pour determiner le nombre de niveaux :
130
131	guez	112	if (guide_u) then
132			call nf95_open('u.nc',Nf90_NOWRITe,ncid)
133			else if (guide_v) then
134			call nf95_open('v.nc',nf90_nowrite,ncid)
135			else if (guide_T) then
136			call nf95_open('T.nc',nf90_nowrite,ncid)
137			else
138			call nf95_open('hur.nc',nf90_nowrite, ncid)
139			end if
140	guez	3
141	guez	102	IF (ncep) THEN
142	guez	108	call nf95_inq_dimid(ncid, 'LEVEL', dimid)
143	guez	102	ELSE
144	guez	108	call nf95_inq_dimid(ncid, 'PRESSURE', dimid)
145	guez	102	END IF
146	guez	108	call nf95_inquire_dimension(ncid, dimid, nclen=nlev)
147	guez	115	PRINT *, 'nlev = ', nlev
148	guez	108	call nf95_close(ncid)
149	guez	115
150			! Lecture du premier état des réanalyses :
151	guez	102	CALL read_reanalyse(1, ps, ucovrea2, vcovrea2, tetarea2, qrea2, &
152			masserea2, nlev)
153			qrea2 = max(qrea2, 0.1)
154			END IF first_call
155	guez	3
156	guez	102	! IMPORTATION DES VENTS, PRESSION ET TEMPERATURE REELS:
157	guez	3
158	guez	102	! Nudging fields are given 4 times per day:
159			IF (mod(itau, day_step / 4) == 0) THEN
160			vcovrea1 = vcovrea2
161			ucovrea1 = ucovrea2
162			tetarea1 = tetarea2
163			qrea1 = qrea2
164	guez	3
165	guez	116	PRINT *, 'Lecture fichiers guidage, pas ', step_rea, 'apres ', &
166	guez	102	count_no_rea, ' non lectures'
167			step_rea = step_rea + 1
168			CALL read_reanalyse(step_rea, ps, ucovrea2, vcovrea2, tetarea2, qrea2, &
169			masserea2, nlev)
170			qrea2 = max(qrea2, 0.1)
171	guez	112
172			if (guide_u) then
173			CALL writefield("ucov", ucov)
174			CALL writefield("ucovrea2", ucovrea2)
175			end if
176
177			if (guide_t) then
178			CALL writefield("teta", teta)
179			CALL writefield("tetarea2", tetarea2)
180			end if
181
182			if (guide_q) then
183			CALL writefield("qrea2", qrea2)
184			CALL writefield("q", q)
185			end if
186	guez	102	ELSE
187			count_no_rea = count_no_rea + 1
188			END IF
189	guez	3
190	guez	102	! Guidage
191	guez	3
192	guez	102	tau = mod(real(itau) / real(day_step / 4), 1.)
193	guez	3
194	guez	102	! x_gcm = a * x_gcm + (1 - a) * x_reanalyses
195	guez	3
196	guez	102	IF (guide_u) THEN
197			IF (itau == 0 .AND. ini_anal) then
198			ucov = ucovrea1
199			else
200			forall (l = 1: llm) ucov(:, :, l) = (1. - alpha_u) * ucov(:, :, l) &
201			+ alpha_u * ((1. - tau) * ucovrea1(:, :, l) &
202			+ tau * ucovrea2(:, :, l))
203			end IF
204			END IF
205	guez	3
206	guez	102	IF (guide_t) THEN
207			IF (itau == 0 .AND. ini_anal) then
208			teta = tetarea1
209			else
210			forall (l = 1: llm) teta(:, :, l) = (1. - alpha_t) * teta(:, :, l) &
211			+ alpha_t * ((1. - tau) * tetarea1(:, :, l) &
212			+ tau * tetarea2(:, :, l))
213			end IF
214			END IF
215	guez	3
216	guez	102	IF (guide_q) THEN
217			! Calcul de l'humidité saturante :
218			forall (l = 1: llm + 1) p(:, :, l) = ap(l) + bp(l) * ps
219			CALL exner_hyb(ps, p, pks, pk)
220			qsat = q_sat(pk * teta / cpp, preff * (pk / cpp)**(1. / kappa))
221	guez	3
222	guez	102	! humidité relative en % -> humidité spécifique
223			IF (itau == 0 .AND. ini_anal) then
224			q = qsat * qrea1 * 0.01
225			else
226			forall (l = 1: llm) q(:, :, l) = (1. - alpha_q) * q(:, :, l) &
227			+ alpha_q * (qsat(:, :, l) * ((1. - tau) * qrea1(:, :, l) &
228			+ tau * qrea2(:, :, l)) * 0.01)
229			end IF
230			END IF
231	guez	3
232	guez	102	IF (guide_v) THEN
233			IF (itau == 0 .AND. ini_anal) then
234			vcov = vcovrea1
235			else
236			forall (l = 1: llm) vcov(:, :, l) = (1. - alpha_v) * vcov(:, :, l) &
237			+ alpha_v * ((1. - tau) * vcovrea1(:, :, l) &
238			+ tau * vcovrea2(:, :, l))
239			end IF
240			END IF
241	guez	3
242	guez	29	END SUBROUTINE guide
243	guez	20
244			END MODULE guide_m