source: LMDZ6/trunk/libf/dynphy_lonlat/inigeomphy_mod.F90 @ 3352

Last change on this file since 3352 was 2963, checked in by dcugnet, 7 years ago

Fix a bug in the longitude interpolation of ozone, leading for some
resolutions to a too small margin to ensure inetrpolation without
any extrapolation.
Also, minor fix in regular_lonlat_mod.F90 routine to ensure that

boundslon_reg(i,east)>boundslon_reg(i,west).

File size: 9.0 KB
Line 
1!
2! $Id: $
3!
4MODULE inigeomphy_mod
5
6CONTAINS
7
8SUBROUTINE inigeomphy(iim,jjm,nlayer, &
9                     nbp, communicator, &
10                     rlatu,rlatv,rlonu,rlonv,aire,cu,cv)
11  USE mod_grid_phy_lmdz, ONLY: klon_glo,  & ! number of atmospheric columns (on full grid)
12                               regular_lonlat, &  ! regular longitude-latitude grid type
13                               nbp_lon, nbp_lat, nbp_lev
14  USE mod_phys_lmdz_para, ONLY: klon_omp, & ! number of columns (on local omp grid)
15                                klon_omp_begin, & ! start index of local omp subgrid
16                                klon_omp_end, & ! end index of local omp subgrid
17                                klon_mpi_begin ! start indes of columns (on local mpi grid)
18  USE geometry_mod, ONLY : init_geometry
19  USE physics_distribution_mod, ONLY : init_physics_distribution
20  USE regular_lonlat_mod, ONLY : init_regular_lonlat, &
21                                 east, west, north, south, &
22                                 north_east, north_west, &
23                                 south_west, south_east
24  USE mod_interface_dyn_phys, ONLY :  init_interface_dyn_phys
25  USE nrtype, ONLY: pi
26  USE comvert_mod, ONLY: preff, ap, bp, aps, bps, presnivs, &
27                         scaleheight, pseudoalt
28  USE vertical_layers_mod, ONLY: init_vertical_layers
29  IMPLICIT NONE
30
31  ! =======================================================================
32  ! Initialisation of the physical constants and some positional and
33  ! geometrical arrays for the physics
34  ! =======================================================================
35
36  include "iniprint.h"
37
38  INTEGER, INTENT (IN) :: nlayer ! number of atmospheric layers
39  INTEGER, INTENT (IN) :: iim ! number of atmospheric columns along longitudes
40  INTEGER, INTENT (IN) :: jjm ! number of atompsheric columns along latitudes
41  INTEGER, INTENT(IN) :: nbp ! number of physics columns for this MPI process
42  INTEGER, INTENT(IN) :: communicator ! MPI communicator
43  REAL, INTENT (IN) :: rlatu(jjm+1) ! latitudes of the physics grid
44  REAL, INTENT (IN) :: rlatv(jjm) ! latitude boundaries of the physics grid
45  REAL, INTENT (IN) :: rlonv(iim+1) ! longitudes of the physics grid
46  REAL, INTENT (IN) :: rlonu(iim+1) ! longitude boundaries of the physics grid
47  REAL, INTENT (IN) :: aire(iim+1,jjm+1) ! area of the dynamics grid (m2)
48  REAL, INTENT (IN) :: cu((iim+1)*(jjm+1)) ! cu coeff. (u_covariant = cu * u)
49  REAL, INTENT (IN) :: cv((iim+1)*jjm) ! cv coeff. (v_covariant = cv * v)
50
51  INTEGER :: ibegin, iend, offset
52  INTEGER :: i,j,k
53  CHARACTER (LEN=20) :: modname = 'inigeomphy'
54  CHARACTER (LEN=80) :: abort_message
55  REAL :: total_area_phy, total_area_dyn
56
57  ! boundaries, on global grid
58  REAL,ALLOCATABLE :: boundslon_reg(:,:)
59  REAL,ALLOCATABLE :: boundslat_reg(:,:)
60
61  ! global array, on full physics grid:
62  REAL,ALLOCATABLE :: latfi_glo(:)
63  REAL,ALLOCATABLE :: lonfi_glo(:)
64  REAL,ALLOCATABLE :: cufi_glo(:)
65  REAL,ALLOCATABLE :: cvfi_glo(:)
66  REAL,ALLOCATABLE :: airefi_glo(:)
67  REAL,ALLOCATABLE :: boundslonfi_glo(:,:)
68  REAL,ALLOCATABLE :: boundslatfi_glo(:,:)
69
70  ! local arrays, on given MPI/OpenMP domain:
71  REAL,ALLOCATABLE,SAVE :: latfi(:)
72  REAL,ALLOCATABLE,SAVE :: lonfi(:)
73  REAL,ALLOCATABLE,SAVE :: cufi(:)
74  REAL,ALLOCATABLE,SAVE :: cvfi(:)
75  REAL,ALLOCATABLE,SAVE :: airefi(:)
76  REAL,ALLOCATABLE,SAVE :: boundslonfi(:,:)
77  REAL,ALLOCATABLE,SAVE :: boundslatfi(:,:)
78!$OMP THREADPRIVATE (latfi,lonfi,cufi,cvfi,airefi,boundslonfi,boundslatfi)
79
80  ! Initialize Physics distibution and parameters and interface with dynamics
81  IF (iim*jjm>1) THEN ! general 3D case
82    CALL init_physics_distribution(regular_lonlat,4, &
83                                 nbp,iim,jjm+1,nlayer,communicator)
84  ELSE ! For 1D model
85    CALL init_physics_distribution(regular_lonlat,4, &
86                                 1,1,1,nlayer,communicator)
87  ENDIF
88  CALL init_interface_dyn_phys
89 
90  ! init regular global longitude-latitude grid points and boundaries
91  ALLOCATE(boundslon_reg(iim,2))
92  ALLOCATE(boundslat_reg(jjm+1,2))
93 
94  DO i=1,iim
95   boundslon_reg(i,west)=rlonu(i)
96   boundslon_reg(i,east)=rlonu(i+1)
97  ENDDO
98
99  boundslat_reg(1,north)= PI/2
100  boundslat_reg(1,south)= rlatv(1)
101  DO j=2,jjm
102   boundslat_reg(j,north)=rlatv(j-1)
103   boundslat_reg(j,south)=rlatv(j)
104  ENDDO
105  boundslat_reg(jjm+1,north)= rlatv(jjm)
106  boundslat_reg(jjm+1,south)= -PI/2
107
108  ! Write values in module regular_lonlat_mod
109  CALL init_regular_lonlat(iim,jjm+1, rlonv(1:iim), rlatu, &
110                           boundslon_reg, boundslat_reg)
111
112  ! Generate global arrays on full physics grid
113  ALLOCATE(latfi_glo(klon_glo),lonfi_glo(klon_glo))
114  ALLOCATE(cufi_glo(klon_glo),cvfi_glo(klon_glo))
115  ALLOCATE(airefi_glo(klon_glo))
116  ALLOCATE(boundslonfi_glo(klon_glo,4))
117  ALLOCATE(boundslatfi_glo(klon_glo,4))
118
119  IF (klon_glo>1) THEN ! general case
120    ! North pole
121    latfi_glo(1)=rlatu(1)
122    lonfi_glo(1)=0.
123    cufi_glo(1) = cu(1)
124    cvfi_glo(1) = cv(1)
125    boundslonfi_glo(1,north_east)=0
126    boundslatfi_glo(1,north_east)=PI/2
127    boundslonfi_glo(1,north_west)=2*PI
128    boundslatfi_glo(1,north_west)=PI/2
129    boundslonfi_glo(1,south_west)=2*PI
130    boundslatfi_glo(1,south_west)=rlatv(1)
131    boundslonfi_glo(1,south_east)=0
132    boundslatfi_glo(1,south_east)=rlatv(1)
133    DO j=2,jjm
134      DO i=1,iim
135        k=(j-2)*iim+1+i
136        latfi_glo(k)= rlatu(j)
137        lonfi_glo(k)= rlonv(i)
138        cufi_glo(k) = cu((j-1)*(iim+1)+i)
139        cvfi_glo(k) = cv((j-1)*(iim+1)+i)
140        boundslonfi_glo(k,north_east)=rlonu(i)
141        boundslatfi_glo(k,north_east)=rlatv(j-1)
142        boundslonfi_glo(k,north_west)=rlonu(i+1)
143        boundslatfi_glo(k,north_west)=rlatv(j-1)
144        boundslonfi_glo(k,south_west)=rlonu(i+1)
145        boundslatfi_glo(k,south_west)=rlatv(j)
146        boundslonfi_glo(k,south_east)=rlonu(i)
147        boundslatfi_glo(k,south_east)=rlatv(j)
148      ENDDO
149    ENDDO
150    ! South pole
151    latfi_glo(klon_glo)= rlatu(jjm+1)
152    lonfi_glo(klon_glo)= 0.
153    cufi_glo(klon_glo) = cu((iim+1)*jjm+1)
154    cvfi_glo(klon_glo) = cv((iim+1)*jjm-iim)
155    boundslonfi_glo(klon_glo,north_east)= 0
156    boundslatfi_glo(klon_glo,north_east)= rlatv(jjm)
157    boundslonfi_glo(klon_glo,north_west)= 2*PI
158    boundslatfi_glo(klon_glo,north_west)= rlatv(jjm)
159    boundslonfi_glo(klon_glo,south_west)= 2*PI
160    boundslatfi_glo(klon_glo,south_west)= -PI/2
161    boundslonfi_glo(klon_glo,south_east)= 0
162    boundslatfi_glo(klon_glo,south_east)= -Pi/2
163
164    ! build airefi(), mesh area on physics grid
165    CALL gr_dyn_fi(1,iim+1,jjm+1,klon_glo,aire,airefi_glo)
166    ! Poles are single points on physics grid
167    airefi_glo(1)=sum(aire(1:iim,1))
168    airefi_glo(klon_glo)=sum(aire(1:iim,jjm+1))
169
170    ! Sanity check: do total planet area match between physics and dynamics?
171    total_area_dyn=sum(aire(1:iim,1:jjm+1))
172    total_area_phy=sum(airefi_glo(1:klon_glo))
173    IF (total_area_dyn/=total_area_phy) THEN
174      WRITE (lunout, *) 'inigeomphy: planet total surface discrepancy !!!'
175      WRITE (lunout, *) '     in the dynamics total_area_dyn=', total_area_dyn
176      WRITE (lunout, *) '  but in the physics total_area_phy=', total_area_phy
177      IF (abs(total_area_dyn-total_area_phy)>0.00001*total_area_dyn) THEN
178        ! stop here if the relative difference is more than 0.001%
179        abort_message = 'planet total surface discrepancy'
180        CALL abort_gcm(modname, abort_message, 1)
181      ENDIF
182    ENDIF
183  ELSE ! klon_glo==1, running the 1D model
184    ! just copy over input values
185    latfi_glo(1)=rlatu(1)
186    lonfi_glo(1)=rlonv(1)
187    cufi_glo(1)=cu(1)
188    cvfi_glo(1)=cv(1)
189    airefi_glo(1)=aire(1,1)
190    boundslonfi_glo(1,north_east)=rlonu(1)
191    boundslatfi_glo(1,north_east)=PI/2
192    boundslonfi_glo(1,north_west)=rlonu(2)
193    boundslatfi_glo(1,north_west)=PI/2
194    boundslonfi_glo(1,south_west)=rlonu(2)
195    boundslatfi_glo(1,south_west)=rlatv(1)
196    boundslonfi_glo(1,south_east)=rlonu(1)
197    boundslatfi_glo(1,south_east)=rlatv(1)
198  ENDIF ! of IF (klon_glo>1)
199
200!$OMP PARALLEL
201  ! Now generate local lon/lat/cu/cv/area/bounds arrays
202  ALLOCATE(latfi(klon_omp),lonfi(klon_omp),cufi(klon_omp),cvfi(klon_omp))
203  ALLOCATE(airefi(klon_omp))
204  ALLOCATE(boundslonfi(klon_omp,4))
205  ALLOCATE(boundslatfi(klon_omp,4))
206
207
208  offset = klon_mpi_begin - 1
209  airefi(1:klon_omp) = airefi_glo(offset+klon_omp_begin:offset+klon_omp_end)
210  cufi(1:klon_omp) = cufi_glo(offset+klon_omp_begin:offset+klon_omp_end)
211  cvfi(1:klon_omp) = cvfi_glo(offset+klon_omp_begin:offset+klon_omp_end)
212  lonfi(1:klon_omp) = lonfi_glo(offset+klon_omp_begin:offset+klon_omp_end)
213  latfi(1:klon_omp) = latfi_glo(offset+klon_omp_begin:offset+klon_omp_end)
214  boundslonfi(1:klon_omp,:) = boundslonfi_glo(offset+klon_omp_begin:offset+klon_omp_end,:)
215  boundslatfi(1:klon_omp,:) = boundslatfi_glo(offset+klon_omp_begin:offset+klon_omp_end,:)
216
217  ! copy over local grid longitudes and latitudes
218  CALL init_geometry(klon_omp,lonfi,latfi,boundslonfi,boundslatfi, &
219                     airefi,cufi,cvfi)
220
221  ! copy over preff , ap(), bp(), etc
222  CALL init_vertical_layers(nlayer,preff,scaleheight, &
223                            ap,bp,aps,bps,presnivs,pseudoalt)
224
225!$OMP END PARALLEL
226
227
228END SUBROUTINE inigeomphy
229
230END MODULE inigeomphy_mod
231
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