SUBROUTINE surfini(ngrid,piceco2,qsurf,psolaralb) ! to use 'getin' USE ioipsl_getincom use netcdf IMPLICIT NONE c======================================================================= c c creation des calottes pour l'etat initial c c======================================================================= c----------------------------------------------------------------------- c Declarations: c ------------- #include "dimensions.h" #include "dimphys.h" #include "surfdat.h" #include "callkeys.h" #include "tracer.h" #include "comgeomfi.h" #include "comcstfi.h" #include "datafile.h" INTEGER ngrid,ig,icap,iq,alternate REAL piceco2(ngrid),psolaralb(ngrid,2) REAL qsurf(ngrid,nqmx) !tracer on surface (kg/m2) REAL icedryness ! ice dryness ! longwatercaptag is watercaptag. Trick for some compilers LOGICAL, DIMENSION(100000) :: longwatercaptag EXTERNAL ISMIN,ISMAX INTEGER ISMIN,ISMAX ! There are 3 different modes for ice distribution: ! icelocationmode = 1 ---> based on data from surface.nc ! icelocationmode = 2 ---> directly predefined for GCM resolutions 32x24 or 64x48 ! icelocationmode = 3 ---> based on logical relations for latitude and longitude ! For visualisation : > /u/tnalmd/bin/watercaps gcm_txt_output_file INTEGER,SAVE :: icelocationmode = 2 !in case icelocationmode == 1 INTEGER i,j INTEGER imd,jmd PARAMETER (imd=360,jmd=180) REAL zdata(imd,jmd) REAL zelat,zelon INTEGER nb_ice(ngrid,2) ! number of counts | detected ice for GCM grid INTEGER latice(jjm,2),lonice (iim,2) ! number of counts | detected ice along lat & lon axis REAL step,count,ratiolat INTEGER ierr,nid,nvarid REAL,SAVE :: min_icevalue = 500. character(len=50) :: string = 'thermal' character (len=100) :: zedatafile c c======================================================================= c water ice outliers c ------------------------------------------ IF ((water) .and. (caps)) THEN c Perennial H20 north cap defined by watercaptag=true (allows surface to be c hollowed by sublimation in vdifc). c We might not want albedodat to be modified because it is used to write c restart files. Instead, albedo is directly modified when needed (i.e. c if we have watercaptag and no co2 ice), below and in albedocaps.F90 c "Dryness coefficient" controlling the evaporation and c sublimation from the ground water ice (close to 1) c HERE, the goal is to correct for the fact c that the simulated permanent water ice polar caps c is larger than the actual cap and the atmospheric c opacity not always realistic. alternate = 0 if (ngridmx .ne. 1) then watercaptag(:) = .false. longwatercaptag(:) = .false. endif write(*,*) "Ice dryness ?" icedryness=1. ! default value call getin("icedryness",icedryness) write(*,*) " icedryness = ",icedryness dryness (:) = icedryness #ifdef MESOSCALE do ig=1,ngridmx !write(*,*) "all qsurf to zero. dirty." do iq=1,nqmx qsurf(ig,iq)=0. !! on jette les inputs GCM !! on regle juste watercaptag !! il faudrait garder les inputs GCM !! si elles sont consequentes enddo if ( ( lati(ig)*180./pi .gt. 70. ) .and. . ( albedodat(ig) .ge. 0.26 ) ) then write(*,*)"outlier ",ig watercaptag(ig) = .true. dryness(ig) = 1. albedodat(ig) = albedo_h2o_ice !! pour output else watercaptag(ig) = .false. dryness(ig) = 1. endif enddo #else IF (ngridmx .eq. 1) THEN ! special case for 1d --> do nothing print*, 'ngridmx = 1, do no put ice caps in surfini.F' ELSE IF (icelocationmode .eq. 1) THEN print*,'Surfini: ice caps defined from surface.nc' ! This method detects ice as gridded value above min_icevalue in the field "string" from surface.nc ! Typically, it is for thermal inertia above 500 tiu. ! Two conditions are verified: ! 1. GCM ice caps are defined such as area is conserved for a given latitude ! (the approximation is that all points within the GCM latitude resolution have the same area). ! 2. caps are placed to fill the GCM points with the most detected ice first. zedatafile = trim(datafile) ierr=nf90_open(trim(zedatafile)//'/surface.nc', & NF90_NOWRITE,nid) IF (ierr.NE.nf90_noerr) THEN write(*,*)'Error : cannot open file surface.nc ' write(*,*)'(in phymars/surfini.F)' write(*,*)'It should be in :',trim(zedatafile),'/' write(*,*)'1) You can set this path in the callphys.def file:' write(*,*)' datadir=/path/to/the/datafiles' write(*,*)'2) If necessary, surface.nc (and other datafiles)' write(*,*)' can be obtained online on:' write(*,*)' http://www.lmd.jussieu.fr/~forget/datagcm/datafile' CALL ABORT ENDIF ierr=nf90_inq_varid(nid, string, nvarid) if (ierr.ne.nf90_noerr) then write(*,*) 'surfini error, cannot find ',trim(string) write(*,*) ' in file ',trim(zedatafile),'/surface.nc' write(*,*)trim(nf90_strerror(ierr)) stop endif ierr=nf90_get_var(nid, nvarid, zdata) if (ierr.ne.nf90_noerr) then write(*,*) 'surfini: error failed loading ',trim(string) write(*,*)trim(nf90_strerror(ierr)) stop endif ierr=nf90_close(nid) nb_ice(:,1) = 1 ! default: there is no ice latice(:,1) = 1 lonice(:,1) = 1 nb_ice(:,2) = 0 latice(:,2) = 0 lonice(:,2) = 0 !print*,'jjm,iim',jjm,iim ! jjm = nb lati , iim = nb longi ! loop over the GCM grid - except for poles (ig=1 and ngridmx) do ig=2,ngridmx-1 ! loop over the surface file grid do i=1,imd do j=1,jmd zelon = i - 180. zelat = 90. - j if ((abs(lati(ig)*180./pi-zelat) .le. 90./real(jjm)) .and. & (abs(long(ig)*180./pi-zelon) .le. 180./real(iim))) then ! count all points in that GCM grid point nb_ice(ig,1) = nb_ice(ig,1) + 1 if (zdata(i,j) > min_icevalue) ! count all detected points in that GCM grid point & nb_ice(ig,2) = nb_ice(ig,2) + 1 endif enddo enddo ! projection of nb_ice on GCM lat and lon axes latice(1+(ig-2)/iim,:) = & latice(1+(ig-2)/iim,:) + nb_ice(ig,:) lonice(1+mod(ig-2,iim),:) = & lonice(1+mod(ig-2,iim),:) + nb_ice(ig,:) ! lonice is USELESS ... enddo ! of do ig=2,ngridmx-1 ! special case for poles nb_ice(1,2) = 1 ! ice prescribed on north pole latice(1,:) = nb_ice(1,:) lonice(1,:) = nb_ice(1,:) latice(jjm,:) = nb_ice(ngridmx,:) lonice(iim,:) = nb_ice(ngridmx,:) ! print*, 'latice TOT', latice(:,1) ! print*, 'latice FOUND', latice(:,2) ! print*, 'lonice TOT', lonice(:,1) ! print*, 'lonice FOUND', lonice(:,2) ! print*, 'lat ratio', int(real(latice(:,2))/real(latice(:,1))*iim) ! print*, 'lon ratio', int(real(lonice(:,2))/real(lonice(:,1))*jjm) ! print*,'' ! print*,'sum lat', sum(latice(:,1)), sum(lonice(:,1)) ! print*,'sum lon', sum(latice(:,2)), sum(lonice(:,2)) ! loop over GCM latitudes. CONSIDER ONLY NORTHERN HEMISPHERE do i=1,jjm/2 step = 1. ! threshold to add ice cap count = 0. ! number of ice GCM caps at this latitude ! ratiolat is the ratio of area covered by ice within this GCM latitude range ratiolat = real(latice(i,2))/real(latice(i,1)) !print*,'i',i,(i-1)*iim+2,i*iim+1 ! put ice caps while there is not enough ice, ! as long as the threshold is above 20% do while ( (count .le. ratiolat*iim ) .and. (step .ge. 0.2)) count = 0. ! loop over GCM longitudes do j=1,iim ! if the detected ice ratio in the GCM grid point ! is more than 'step', then add ice if (real(nb_ice((i-1)*iim+1+j,2)) & / real(nb_ice((i-1)*iim+1+j,1)) .ge. step) then watercaptag((i-1)*iim+1+j) = .true. count = count + 1 endif enddo ! of do j=1,iim !print*, 'step',step,count,ratiolat*iim step = step - 0.01 enddo ! of do while !print*, 'step',step,count,ratiolat*iim enddo ! of do i=1,jjm/2 ELSE IF (icelocationmode .eq. 2) THEN print*,'Surfini: predefined ice caps' if ((iim .eq. 32) .and. (jjm .eq. 24)) then ! 32x24 print*,'water ice caps distribution for 32x24 resolution' longwatercaptag(1:9) = .true. ! central cap - core longwatercaptag(26:33) = .true. ! central cap longwatercaptag(1:33) = .true. ! central cap longwatercaptag(56) = .true. ! central cap longwatercaptag(58) = .true. ! central cap longwatercaptag(60) = .true. ! central cap longwatercaptag(62) = .true. ! central cap longwatercaptag(64) = .true. ! central cap !--------------------- OUTLIERS ---------------------------- else if ((iim .eq. 64) .and. (jjm .eq. 48)) then ! 64x48 print*,'water ice caps distribution for 64x48 resolution' longwatercaptag(1:65) = .true. ! central cap - core longwatercaptag(75:85) = .true. ! central cap longwatercaptag(93:114) = .true. ! central cap !--------------------- OUTLIERS ---------------------------- if (.true.) then longwatercaptag(136) = .true. ! outlier, lat = 78.75 longwatercaptag(138) = .true. ! outlier, lat = 78.75 longwatercaptag(140) = .true. ! outlier, lat = 78.75 longwatercaptag(142) = .true. ! outlier, lat = 78.75 longwatercaptag(161) = .true. ! outlier, lat = 78.75 longwatercaptag(163) = .true. ! outlier, lat = 78.75 longwatercaptag(165) = .true. ! outlier, lat = 78.75 longwatercaptag(183) = .true. ! outlier, lat = 78.75 longwatercaptag(185) = .true. ! outlier, lat = 78.75 longwatercaptag(187) = .true. ! outlier, lat = 78.75 longwatercaptag(189) = .true. ! outlier, lat = 78.75 longwatercaptag(191) = .true. ! outlier, lat = 78.75 longwatercaptag(193) = .true. ! outlier, lat = 78.75 longwatercaptag(194) = .true. ! outlier, lat = 75 longwatercaptag(203) = .true. ! outlier, lat = 75 longwatercaptag(207) = .true. ! outlier, lat = 75 longwatercaptag(244) = .true. ! outlier, lat = 75 longwatercaptag(246) = .true. ! outlier, lat = 75 longwatercaptag(250) = .true. ! outlier, lat = 75 longwatercaptag(252) = .true. ! outlier, lat = 75 longwatercaptag(254) = .true. ! outlier, lat = 75 longwatercaptag(256) = .true. ! outlier, lat = 75 endif !-------------------------------------------------------------- else if (ngridmx .ne. 1) then print*,'No predefined ice location for this resolution :',iim,jjm print*,'Please change icelocationmode in surfini.F' print*,'Or add some new definitions ...' call abort endif do ig=1,ngridmx if (longwatercaptag(ig)) watercaptag(ig) = .true. enddo ELSE IF (icelocationmode .eq. 3) THEN print*,'Surfini: ice caps defined by lat and lon values' do ig=1,ngridmx c-------- Towards olympia planitia water caps ----------- c-------------------------------------------------------- if ( ( ( lati(ig)*180./pi .ge. 77. ) .and. ! cap #2 . ( lati(ig)*180./pi .le. 80. ) .and. . ( long(ig)*180./pi .ge. 110. ) .and. . ( long(ig)*180./pi .le. 181. ) ) . .or. . ( ( lati(ig)*180./pi .ge. 75. ) .and. ! cap #4 (Korolev crater) . ( lati(ig)*180./pi .le. 76. ) .and. . ( long(ig)*180./pi .ge. 150. ) .and. . ( long(ig)*180./pi .le. 168. ) ) . .or. . ( ( lati(ig)*180./pi .ge. 77 ) .and. ! cap #5 . ( lati(ig)*180./pi .le. 80. ) .and. . ( long(ig)*180./pi .ge. -150.) .and. . ( long(ig)*180./pi .le. -110.) ) ) . then if ((alternate .eq. 0)) then ! 1/2 en 64x48 sinon trop large en lat ! watercaptag(ig)=.true. alternate = 1 else alternate = 0 endif !end if alternate = 0 endif c----------- Opposite olympia planitia water cap -------- c-------------------------------------------------------- if ( ( ( lati(ig)*180./pi .ge. 80 ) .and. . ( lati(ig)*180./pi .le. 84 ) ) . .and. . ( ( long(ig)*180./pi .lt. -95. ) .or. !!! 32x24 . ( long(ig)*180./pi .gt. 85. ) ) ) then !!! 32x24 ! . ( ( ( long(ig)*180./pi .ge. -29. ) .and. !!! 64x48 ! . ( long(ig)*180./pi .le. 90. ) ) .or. !!! 64x48 ! . ( ( long(ig)*180./pi .ge. -77. ) .and. !!! 64x48 ! . ( long(ig)*180./pi .le. -70. ) ) ) ) then !!! 64x48 ! watercaptag(ig)=.true. endif c -------------------- Central cap ---------------------- c-------------------------------------------------------- if (abs(lati(ig)*180./pi).gt.80) . watercaptag(ig)=.true. c-------------------------------------------------------- c-------------------------------------------------------- end do ! of (ngridmx) ELSE print*, 'In surfini.F, icelocationmode is ', icelocationmode print*, 'It should be 1, 2 or 3.' call abort ENDIF ! of if (icelocation) ! print caps locations - useful for plots too print*,'latitude | longitude | ig' do ig=1,ngridmx dryness (ig) = icedryness if (watercaptag(ig)) then print*,'ice water cap', lati(ig)*180./pi, . long(ig)*180./pi, ig endif enddo #endif ENDIF ! (caps & water) c =============================================================== c INITIAL ALBEDO c =============================================================== write(*,*)"surfini: water frost thickness", s frost_albedo_threshold write(*,*)"surfini: water ice albedo:", albedo_h2o_ice write(*,*)"surfini: water ice TI:", inert_h2o_ice c To start with : Initial albedo = observed dataset c ------------------------------------------------- DO ig=1,ngrid psolaralb(ig,1)=albedodat(ig) psolaralb(ig,2)=albedodat(ig) END DO PRINT*,'minimum albedo sans water caps', s albedodat(ISMIN(ngrid,albedodat,1)) PRINT*,'maximum albedo sans water caps', s albedodat(ISMAX(ngrid,albedodat,1)) c initial albedo if permanent H2O ice is present c ------------------------------------------------ IF ((water) .and. (caps)) THEN DO ig=1,ngrid IF (watercaptag(ig)) THEN psolaralb(ig,1) = albedo_h2o_ice psolaralb(ig,2) = albedo_h2o_ice ENDIF END DO PRINT*,'minimum albedo avec water caps', s psolaralb(ISMIN(ngrid,psolaralb,1),1) PRINT*,'maximum albedo avec water caps', s psolaralb(ISMAX(ngrid,psolaralb,1),1) ENDIF c changing initial albedo if CO2 ice is present c ------------------------------------------- DO ig=1,ngrid IF (piceco2(ig) .GT. 0.) THEN IF(ig.GT.ngrid/2+1) THEN icap=2 ELSE icap=1 ENDIF psolaralb(ig,1) = albedice(icap) psolaralb(ig,2) = albedice(icap) END IF END DO c changing initial albedo if water ice frost is present c ------------------------------------------- IF (water) THEN do iq=1,nqmx c if there is frost and surface albedo is set to albedo_h2o_ice if(noms(iq).eq."h2o_ice") then do ig=1,ngrid if ((watercaptag(ig).eqv..false.) & .and. (qsurf(ig,iq).lt.-frost_albedo_threshold)) then print*, '' print*, '!!! PROBLEM in SURFINI !!!!' print*, 'FOUND NEGATIVE SURFACE ICE VALUE WHERE & WATERCAPTAG IS FALSE' print*, '' print*, 'ig,qsurf,threshold' , & ig, qsurf(ig,iq), -frost_albedo_threshold print*, '' print*, '1) Check h2o_ice in startfi and ice & distribution in surfini' print*, '2) Use ini_h2osurf option in newstart' print*, '' CALL ABORT endif if ((piceco2(ig) .eq. 0.).and. & (qsurf(ig,iq).gt.frost_albedo_threshold)) then psolaralb(ig,1) = albedo_h2o_ice psolaralb(ig,2) = albedo_h2o_ice c PRINT*,'surfini.F frost', c & lati(ig)*180./pi, long(ig)*180./pi endif enddo endif end do PRINT*,'minimum albedo avec givre et co2', s psolaralb(ISMIN(ngrid,psolaralb,1),1) PRINT*,'maximum albedo avec givre et co2', s psolaralb(ISMAX(ngrid,psolaralb,1),1) END IF RETURN END