source: trunk/LMDZ.MARS/libf/phymars/surfini.F @ 1944

Last change on this file since 1944 was 1944, checked in by emillour, 6 years ago

Mars GCM:
A first step towards 1+1=2 (for now only works without tracers):

  • store and load "albedo" (surface albedo) and wstar (thermals' max vertical velocity) in physics (re)start file.
  • turn phyetat0 into a module in the process.

EM
File size: 16.8 KB
Line 
1      SUBROUTINE surfini(ngrid,piceco2,qsurf)
2
3      USE ioipsl_getincom, only: getin
4      use netcdf
5      use tracer_mod, only: nqmx, noms
6      use geometry_mod, only: longitude, latitude ! in radians
7      use surfdat_h, only: watercaptag, frost_albedo_threshold,
8     &                     albedo_h2o_ice, inert_h2o_ice, albedodat,
9     &                     albedice, dryness
10#ifndef MESOSCALE
11      use mod_grid_phy_lmdz, only : klon_glo ! # of physics point on full grid
12      use mod_phys_lmdz_para, only : is_master, gather, scatter
13#endif
14      USE comcstfi_h, ONLY: pi
15      use mod_grid_phy_lmdz, only: nbp_lon, nbp_lat
16      use datafile_mod, only: datadir
17      IMPLICIT NONE
18c=======================================================================
19c
20c   creation des calottes pour l'etat initial
21c
22c=======================================================================
23c-----------------------------------------------------------------------
24c   Declarations:
25c   -------------
26      include "callkeys.h"
27
28      integer,intent(in) :: ngrid ! number of atmospheric columns
29      real,intent(in) :: piceco2(ngrid) ! CO2 ice thickness
30      real,intent(inout) :: qsurf(ngrid,nqmx) ! tracer on surface (kg/m2)
31
32      INTEGER ig,icap,iq,alternate
33      REAL icedryness ! ice dryness
34     
35      ! longwatercaptag is watercaptag. Trick for some compilers
36      LOGICAL, DIMENSION(100000) :: longwatercaptag
37     
38! There are 3 different modes for ice distribution:
39! icelocationmode = 1 ---> based on data from surface.nc
40! icelocationmode = 2 ---> directly predefined for GCM resolutions 32x24 or 64x48
41! icelocationmode = 3 ---> based on logical relations for latitude and longitude
42! For visualisation : > /u/tnalmd/bin/watercaps gcm_txt_output_file
43      INTEGER,SAVE :: icelocationmode = 2
44       
45       
46      !in case icelocationmode == 1
47      INTEGER i,j
48      INTEGER     imd,jmd
49      PARAMETER   (imd=360,jmd=180)
50      REAL        zdata(imd,jmd)
51      REAL        zelat,zelon
52
53#ifndef MESOSCALE
54      INTEGER nb_ice(klon_glo,2)   ! number of counts | detected ice for GCM grid
55#endif
56      INTEGER latice(nbp_lat-1,2),lonice (nbp_lon,2) ! number of counts | detected ice along lat & lon axis
57
58      REAL step,count,ratiolat
59
60      INTEGER   ierr,nid,nvarid
61     
62      REAL,SAVE :: min_icevalue = 500.
63      character(len=50) :: string = 'thermal'
64     
65      character (len=100) :: zedatafile
66
67#ifdef MESOSCALE
68
69      do ig=1,ngrid
70
71         !write(*,*) "all qsurf to zero. dirty."
72         do iq=1,nqmx
73         qsurf(ig,iq)=0.  !! on jette les inputs GCM
74                          !! on regle juste watercaptag
75                          !! il faudrait garder les inputs GCM
76                          !! si elles sont consequentes
77         enddo
78         if ( ( latitude(ig)*180./pi .gt. 70. ) .and.
79     .        ( albedodat(ig) .ge. 0.26   ) )  then
80                 write(*,*)"outlier ",ig
81                 watercaptag(ig)  = .true.
82                 dryness(ig)      = 1.
83                 albedodat(ig)    = albedo_h2o_ice  !! pour output
84         else
85                 watercaptag(ig)  = .false.
86                 dryness(ig)      = 1.
87         endif
88
89      enddo
90#endif
91! problem with nested precompiling flags
92
93#ifndef MESOSCALE
94      ! to handle parallel cases
95#if CPP_PARA
96      logical watercaptag_glo(klon_glo)
97      real dryness_glo(klon_glo)
98      real lati_glo(klon_glo)
99      real long_glo(klon_glo)
100#else
101      logical watercaptag_glo(ngrid)
102      real dryness_glo(ngrid)
103      real lati_glo(ngrid)
104      real long_glo(ngrid)
105#endif
106#endif
107
108#ifndef MESOSCALE
109
110c
111c=======================================================================
112! Initialize watercaptag (default is false)
113      watercaptag_glo(:)=.false.
114
115c     water ice outliers
116c     ------------------------------------------
117
118      IF ((water) .and. (caps)) THEN
119     
120c Perennial H20 north cap defined by watercaptag=true (allows surface to be
121c hollowed by sublimation in vdifc).
122
123c We might not want albedodat to be modified because it is used to write
124c restart files. Instead, albedo is directly modified when needed (i.e.
125c if we have watercaptag and no co2 ice), below and in albedocaps.F90
126
127c       "Dryness coefficient" controlling the evaporation and
128c        sublimation from the ground water ice (close to 1)
129c        HERE, the goal is to correct for the fact
130c        that the simulated permanent water ice polar caps
131c        is larger than the actual cap and the atmospheric
132c        opacity not always realistic.
133
134         alternate = 0
135         
136         if (ngrid .ne. 1) then
137           watercaptag(:) = .false.
138           longwatercaptag(:) = .false.
139         endif
140         
141         write(*,*) "surfini: Ice dryness ?"
142         icedryness=1. ! default value
143         call getin("icedryness",icedryness)
144         write(*,*) "surfini: icedryness = ",icedryness
145         dryness (:) = icedryness
146         
147      ! To be able to run in parallel, we work on the full grid
148      ! and dispatch results afterwards
149
150      ! start by geting latitudes and logitudes on full grid
151      ! (in serial mode, this is just a copy)
152      call gather(latitude,lati_glo)
153      call gather(longitude,long_glo)
154
155      if (is_master) then
156
157        IF (ngrid .eq. 1) THEN ! special case for 1d --> do nothing
158     
159         print*, 'ngrid = 1, do no put ice caps in surfini.F'
160
161        ELSE IF (icelocationmode .eq. 1) THEN
162     
163         print*,'Surfini: ice caps defined from surface.nc'
164           
165! This method detects ice as gridded value above min_icevalue in the field "string" from surface.nc
166! Typically, it is for thermal inertia above 500 tiu.
167! Two conditions are verified:
168! 1. GCM ice caps are defined such as area is conserved for a given latitude
169! (the approximation is that all points within the GCM latitude resolution have the same area).
170! 2. caps are placed to fill the GCM points with the most detected ice first.
171     
172
173           
174         zedatafile = trim(datadir)
175 
176       
177         ierr=nf90_open(trim(zedatafile)//'/surface.nc',
178     &   NF90_NOWRITE,nid)
179     
180         IF (ierr.NE.nf90_noerr) THEN
181       write(*,*)'Error : cannot open file surface.nc '
182       write(*,*)'(in phymars/surfini.F)'
183       write(*,*)'It should be in :',trim(zedatafile),'/'
184       write(*,*)'1) You can set this path in the callphys.def file:'
185       write(*,*)'   datadir=/path/to/the/datafiles'
186       write(*,*)'2) If necessary, surface.nc (and other datafiles)'
187       write(*,*)'   can be obtained online on:'
188       write(*,*)' http://www.lmd.jussieu.fr/~lmdz/planets/mars/datadir'
189       CALL ABORT
190         ENDIF
191     
192     
193         ierr=nf90_inq_varid(nid, string, nvarid)
194         if (ierr.ne.nf90_noerr) then
195          write(*,*) 'surfini error, cannot find ',trim(string)
196          write(*,*) ' in file ',trim(zedatafile),'/surface.nc'
197          write(*,*)trim(nf90_strerror(ierr))
198          stop
199         endif
200
201         ierr=nf90_get_var(nid, nvarid, zdata)
202
203         if (ierr.ne.nf90_noerr) then
204          write(*,*) 'surfini: error failed loading ',trim(string)
205          write(*,*)trim(nf90_strerror(ierr))
206          stop
207         endif
208 
209                     
210         ierr=nf90_close(nid)
211 
212
213         nb_ice(:,1) = 1 ! default: there is no ice
214         latice(:,1) = 1
215         lonice(:,1) = 1
216         nb_ice(:,2) = 0
217         latice(:,2) = 0
218         lonice(:,2) = 0
219         !print*,'jjm,iim',jjm,iim ! jjm =  nb lati , iim = nb longi
220
221         ! loop over the GCM grid - except for poles (ig=1 and ngrid)
222         do ig=2,klon_glo-1
223     
224          ! loop over the surface file grid     
225          do i=1,imd
226           do j=1,jmd
227             zelon = i - 180.
228             zelat = 90. - j
229            if ((abs(lati_glo(ig)*180./pi-zelat).le.
230     &           90./real(nbp_lat-1)) .and.
231     &          (abs(long_glo(ig)*180./pi-zelon).le.
232     &           180./real(nbp_lon))) then
233              ! count all points in that GCM grid point
234              nb_ice(ig,1) = nb_ice(ig,1) + 1
235              if (zdata(i,j) > min_icevalue)
236                 ! count all detected points in that GCM grid point
237     &           nb_ice(ig,2) = nb_ice(ig,2) + 1
238             endif
239           enddo
240          enddo 
241
242        ! projection of nb_ice on GCM lat and lon axes
243          latice(1+(ig-2)/nbp_lon,:) =
244     &     latice(1+(ig-2)/nbp_lon,:) + nb_ice(ig,:)
245          lonice(1+mod(ig-2,nbp_lon),:) =
246     &     lonice(1+mod(ig-2,nbp_lon),:) + nb_ice(ig,:) ! lonice is USELESS ...
247
248         enddo ! of do ig=2,klon_glo-1
249     
250
251     
252         ! special case for poles
253         nb_ice(1,2)   = 1  ! ice prescribed on north pole
254         latice(1,:)   = nb_ice(1,:)
255         lonice(1,:)   = nb_ice(1,:)
256         latice(nbp_lat-1,:) = nb_ice(ngrid,:)
257         lonice(nbp_lon,:) = nb_ice(ngrid,:)
258     
259     
260!      print*, 'latice TOT', latice(:,1)
261!      print*, 'latice FOUND', latice(:,2)
262!      print*, 'lonice TOT', lonice(:,1)
263!      print*, 'lonice FOUND', lonice(:,2)
264     
265!      print*, 'lat ratio', int(real(latice(:,2))/real(latice(:,1))*iim)
266!      print*, 'lon ratio', int(real(lonice(:,2))/real(lonice(:,1))*jjm)
267     
268!      print*,''
269!      print*,'sum lat', sum(latice(:,1)), sum(lonice(:,1))
270!      print*,'sum lon', sum(latice(:,2)), sum(lonice(:,2))
271     
272   
273         ! loop over GCM latitudes. CONSIDER ONLY NORTHERN HEMISPHERE
274         do i=1,(nbp_lat-1)/2
275          step  = 1. ! threshold to add ice cap
276          count = 0. ! number of ice GCM caps at this latitude
277          ! ratiolat is the ratio of area covered by ice within this GCM latitude range
278          ratiolat  = real(latice(i,2))/real(latice(i,1))
279          !print*,'i',i,(i-1)*iim+2,i*iim+1
280     
281          ! put ice caps while there is not enough ice,
282          ! as long as the threshold is above 20%
283          do while ((count.le.ratiolat*nbp_lon).and.(step.ge.0.2))
284           count = 0.
285           ! loop over GCM longitudes
286           do j=1,nbp_lon
287            ! if the detected ice ratio in the GCM grid point
288            ! is more than 'step', then add ice
289            if (real(nb_ice((i-1)*nbp_lon+1+j,2))
290     &        / real(nb_ice((i-1)*nbp_lon+1+j,1)) .ge. step) then
291                  watercaptag_glo((i-1)*nbp_lon+1+j) = .true.
292                  count = count + 1
293            endif
294           enddo ! of do j=1,nbp_lon
295           !print*, 'step',step,count,ratiolat*nbp_lon
296           step = step - 0.01
297          enddo ! of do while
298          !print*, 'step',step,count,ratiolat*nbp_lon
299
300         enddo ! of do i=1,jjm/2
301           
302
303        ELSE IF (icelocationmode .eq. 2) THEN
304     
305         print*,'Surfini: predefined ice caps'
306     
307         if ((nbp_lon.eq.32).and.((nbp_lat-1).eq.24)) then ! 32x24
308           
309          print*,'water ice caps distribution for 32x24 resolution'
310          longwatercaptag(1:9)    = .true. ! central cap - core
311          longwatercaptag(26:33)  = .true. ! central cap
312          longwatercaptag(1:33)  = .true. ! central cap
313          longwatercaptag(56)  = .true. ! central cap
314          longwatercaptag(58)  = .true. ! central cap
315          longwatercaptag(60)  = .true. ! central cap
316          longwatercaptag(62)  = .true. ! central cap
317          longwatercaptag(64)  = .true. ! central cap
318!---------------------   OUTLIERS  ----------------------------
319
320         else if ((nbp_lon.eq.64).and.((nbp_lat-1).eq.48)) then ! 64x48
321
322          print*,'water ice caps distribution for 64x48 resolution'
323          longwatercaptag(1:65)   = .true. ! central cap - core
324          longwatercaptag(75:85)  = .true. ! central cap
325          longwatercaptag(93:114) = .true. ! central cap
326!---------------------   OUTLIERS  ----------------------------
327          if (.true.) then
328          longwatercaptag(136)    = .true. ! outlier, lat = 78.75
329          longwatercaptag(138)    = .true. ! outlier, lat = 78.75
330          longwatercaptag(140)    = .true. ! outlier, lat = 78.75
331          longwatercaptag(142)    = .true. ! outlier, lat = 78.75
332          longwatercaptag(161)    = .true. ! outlier, lat = 78.75
333          longwatercaptag(163)    = .true. ! outlier, lat = 78.75
334          longwatercaptag(165)    = .true. ! outlier, lat = 78.75
335          longwatercaptag(183)    = .true. ! outlier, lat = 78.75
336          longwatercaptag(185)    = .true. ! outlier, lat = 78.75
337          longwatercaptag(187)    = .true. ! outlier, lat = 78.75
338          longwatercaptag(189)    = .true. ! outlier, lat = 78.75
339          longwatercaptag(191)    = .true. ! outlier, lat = 78.75
340          longwatercaptag(193)    = .true. ! outlier, lat = 78.75
341          longwatercaptag(194)    = .true. ! outlier, lat = 75
342          longwatercaptag(203)    = .true. ! outlier, lat = 75
343          longwatercaptag(207)    = .true. ! outlier, lat = 75
344          longwatercaptag(244)    = .true. ! outlier, lat = 75
345          longwatercaptag(246)    = .true. ! outlier, lat = 75
346          longwatercaptag(250)    = .true. ! outlier, lat = 75
347          longwatercaptag(252)    = .true. ! outlier, lat = 75
348          longwatercaptag(254)    = .true. ! outlier, lat = 75
349          longwatercaptag(256)    = .true. ! outlier, lat = 75
350          endif
351!--------------------------------------------------------------       
352
353
354           
355         else if (klon_glo .ne. 1) then
356       
357          print*,'No predefined ice location for this resolution :',
358     &           nbp_lon,nbp_lat-1
359          print*,'Please change icelocationmode in surfini.F'
360          print*,'Or add some new definitions ...'
361          call abort
362         
363         endif
364
365         do ig=1,klon_glo
366          if (longwatercaptag(ig)) watercaptag_glo(ig) = .true.
367         enddo
368
369
370        ELSE IF (icelocationmode .eq. 3) THEN
371     
372         print*,'Surfini: ice caps defined by lat and lon values'
373
374         do ig=1,klon_glo
375         
376c-------- Towards olympia planitia water caps -----------
377c--------------------------------------------------------
378
379          if ( ( ( lati_glo(ig)*180./pi .ge. 77.  ) .and. ! cap #2
380     .           ( lati_glo(ig)*180./pi .le. 80.  ) .and.
381     .           ( long_glo(ig)*180./pi .ge. 110. ) .and.
382     .           ( long_glo(ig)*180./pi .le. 181. ) )
383     .         .or.
384
385     .         ( ( lati_glo(ig)*180./pi .ge. 75.  ) .and. ! cap #4 (Korolev crater)
386     .           ( lati_glo(ig)*180./pi .le. 76.  ) .and.
387     .           ( long_glo(ig)*180./pi .ge. 150. ) .and.
388     .           ( long_glo(ig)*180./pi .le. 168. ) )
389     .         .or.
390     .         ( ( lati_glo(ig)*180./pi .ge. 77 ) .and. ! cap #5
391     .           ( lati_glo(ig)*180./pi .le. 80.  ) .and.
392     .           ( long_glo(ig)*180./pi .ge. -150.) .and.
393     .           ( long_glo(ig)*180./pi .le. -110.) ) )
394     .         then
395             
396               if ((alternate .eq. 0)) then  ! 1/2 en 64x48 sinon trop large en lat
397              !    watercaptag(ig)=.true.
398                  alternate = 1
399               else
400                  alternate = 0
401               endif !end if alternate = 0
402               
403          endif
404
405c----------- Opposite olympia planitia water cap --------
406c--------------------------------------------------------
407
408          if ( ( ( lati_glo(ig)*180./pi     .ge.  80 ) .and.
409     .         ( lati_glo(ig)*180./pi     .le.  84 ) )
410     .         .and.
411     .       ( ( long_glo(ig)*180./pi .lt. -95. ) .or.       !!! 32x24
412     .         ( long_glo(ig)*180./pi .gt.  85. ) ) ) then   !!! 32x24
413!     .     ( ( ( long_glo(ig)*180./pi .ge. -29. ) .and.       !!! 64x48
414!     .         ( long_glo(ig)*180./pi .le.  90. ) ) .or.      !!! 64x48
415!     .       ( ( long_glo(ig)*180./pi .ge. -77. ) .and.       !!! 64x48
416!     .         ( long_glo(ig)*180./pi .le. -70. ) ) ) ) then  !!! 64x48
417        !   watercaptag_glo(ig)=.true.
418          endif
419
420
421c -------------------- Central cap ----------------------
422c--------------------------------------------------------
423
424          if (abs(lati_glo(ig)*180./pi).gt.80)
425     .          watercaptag_glo(ig)=.true.
426           
427c--------------------------------------------------------
428c--------------------------------------------------------
429         end do ! of (klon_glo)
430
431
432        ELSE
433     
434         print*, 'In surfini.F, icelocationmode is ', icelocationmode
435         print*, 'It should be 1, 2 or 3.'
436         call abort
437
438        ENDIF ! of if (icelocation)
439       
440       
441        ! print caps locations - useful for plots too
442        print*,'surfini: latitude | longitude | ig'
443        do ig=1,klon_glo
444          dryness_glo(ig) = icedryness
445
446          if (watercaptag_glo(ig)) then
447             print*,'surfini: ice water cap', lati_glo(ig)*180./pi,
448     &              long_glo(ig)*180./pi, ig
449          endif
450        enddo
451       
452       endif !of if (is_master)
453       
454       ! Now scatter fields watercaptag and dryness from master to all
455       ! (is just a plain copy in serial mode)
456       call scatter(dryness_glo,dryness)
457       call scatter(watercaptag_glo,watercaptag)
458       
459       ELSE
460         watercaptag(:) = .false.
461       ENDIF ! (caps & water)
462! end of #else of #ifndef MESOSCALE
463#endif       
464
465      END
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