!------------------------------------------------------------------------------- ! PROGRAM make_sso ! !------------------------------------------------------------------------------- ! Purpose: Project ETOPO file (GMT4 axes conventions) on spherical harmonics. !------------------------------------------------------------------------------- USE netcdf, ONLY: nf90_noerr,nf90_strerror,nf90_close,nf90_put_var,nf90_enddef,& nf90_put_att,nf90_global,nf90_real,nf90_def_var,nf90_def_dim,nf90_inq_varid,& nf90_nowrite,nf90_inquire_dimension,nf90_inquire_variable,nf90_open ! USE sphpack IMPLICIT NONE !------------------------------------------------------------------------------- ! Local variables: REAL, PARAMETER :: xpi=4.*ATAN(1.), & !--- pi hp=xpi/2., d2r=xpi/180., & !--- pi, pi/2, pi/180 REarth=2.E7/xpi, & !--- Earth radius eps=1.E-6 !--- Tolerance for angles !=== Transition length for spectral filters (to avoid side lobes) ! REAL, PARAMETER :: del=2000./REarth !--- On unit sphere !=== .TRUE./.FALSE.: Fast/slow routine with heavy O(N^3)/light O(N^2) storage LOGICAL, PARAMETER :: lfast=.TRUE. !--- Fast/slow routine !--- From the input arguments CHARACTER(LEN=256), ALLOCATABLE :: args(:) !--- All the arguments CHARACTER(LEN=2048):: call_seq !--- Calling sequence INTEGER :: nargs !--- Input args number CHARACTER(LEN=256) :: f_in !--- Input file name CHARACTER(LEN=256) :: vnam !--- Height variable name CHARACTER(LEN=256) :: res_in !--- Input resolution CHARACTER(LEN=256) :: fmsk !--- Mask file or keyword !=== Filter on output field, of resolution=ffactor*output resolution LOGICAL :: lfilter=.TRUE. !--- Filter activation REAL :: ffactor !--- Filter resol. factor REAL :: tfactor !--- Transition factor INTEGER :: nlon_ou, nlat_ou !--- Output grid resol. !--- Quantities related to input field grid CHARACTER(LEN=256) :: lonn, latn !--- Axes vars names CHARACTER(LEN=256) :: lonu, latu !--- Angular units REAL, ALLOCATABLE :: lon_in(:), lat_in(:) !--- Cells centers INTEGER :: nlon_in, nlat_in !--- Input grid dims INTEGER :: igrid_in(2) !--- Grid identification REAL :: dlon, dlat !--- Domain sizes REAL :: D1, del1 !--- Resol. at equator REAL :: al !--- Longitude ratio LOGICAL :: lcyc !--- T: redundant longitude LOGICAL :: lXdec, lYinc !--- T: dec/increasing lon/lat REAL, ALLOCATABLE, DIMENSION(:,:) ::v,h , a , b,mski!--- Heights, coeffs, mask REAL, ALLOCATABLE, DIMENSION(:,:,:) ::hs, as, bs, & !--- Same, filtered dxZ, dyZ, dxZ2, dyZ2, dxyZ, Xk, Xl, Xm, Xp, Xq, dH!--- Grads, correlations !--- Quantities related to output grid CHARACTER(LEN=256) :: f_ou !--- Output file name CHARACTER(LEN=256) :: res_ou !--- Output resolution INTEGER(KIND=1), ALLOCATABLE :: mask(:,:) !--- Boolean out land mask REAL, ALLOCATABLE :: lon_ou(:), lat_ou(:), tmp1(:) !--- Output grid coords INTEGER :: igrid_ou(2) !--- Grid identification REAL :: D2, del2 !--- Resol. at equator REAL, ALLOCATABLE, DIMENSION(:,:) :: msko, & !--- Fractional land mask h0, & !--- Large scale orography Zphi, Zsig, Zthe, Zgam, mu, tmp2 !--- Geopo, SSO parameters !--- Miscellanous Netcdf-related variables INTEGER :: fID, xID, loID, phiID, sigID, theID, picID, dIDs(4), nn INTEGER :: vID, yID, laID, meaID, gamID, mskID, valID, muID, ix180 LOGICAL :: ll !--- Miscellanous SPHEREPACK-specific quantities INTEGER :: l1, idh, mdab, lsh, la1, la2, lwa, lsvmin, lsave, ierr, intl INTEGER :: l2, jdh, ndab, lvh, lb1, lb2, lwb, lwkmin, lwork, ldwork REAL, ALLOCATABLE :: wsha(:), wsave(:), wvh (:) REAL, ALLOCATABLE :: wshs(:), dwork(:), work(:) INTEGER :: k, n, nt, isym CHARACTER(LEN=256) :: sub, fnam, msg, arg !------------------------------------------------------------------------------- sub='make_sso' !=== DEAL WITH INPUT ARGUMENTS ================================================= call_seq='./'//TRIM(sub)//'.e' nargs=COMMAND_ARGUMENT_COUNT(); ALLOCATE(args(nargs)) !--- MANUAL DISPLAYED IF NO ARGUMENTS ARE PROVIDED IF(nargs==0) THEN WRITE(*,*)'' WRITE(*,*)'General calling sequence:' WRITE(*,*)'' WRITE(*,*)TRIM(call_seq)//' -i -v -res ' & //' -m -f -t ' WRITE(*,*)'' WRITE(*,*)'Where:' WRITE(*,*)'' WRITE(*,*)' : input file name' WRITE(*,*)' : height variable name' WRITE(*,*)' : number of distinct longitude points of output grid' WRITE(*,*)' : number of distinct latitude points of output grid' WRITE(*,*)' : can be: 1. a mask file (o2a.nc)' WRITE(*,*)' 2. "noro": computed with grid_noro' WRITE(*,*)' default: 3. "spec": computed internally' WRITE(*,*)' : filtering width: ffac*Do (Do:output resol.)' WRITE(*,*)' : transition width: Di+tfac*(Do-Di) (Di: input resol.)' WRITE(*,*) WRITE(*,*)'Note that latitudes grid contains both poles.' WRITE(*,*) STOP END IF !--- ARGUMENTS PARSING DO k=1,nargs CALL GET_COMMAND_ARGUMENT(NUMBER=k,VALUE=args(k)) call_seq=TRIM(call_seq)//' '//TRIM(args(k)) END DO k=1 f_in=''; nlon_ou=0; nlat_ou=0; vnam=''; fmsk=''; ffactor=2.0; tfactor=0. DO k=k+1; ll=.FALSE.; arg=args(k-1) SELECT CASE(arg) CASE('-i'); f_in=args(k); msg='Missing file "'//TRIM(f_in)//'".' ll=NF90_OPEN(f_in,NF90_NOWRITE,fID)/=NF90_NOERR IF(.NOT.ll) n=NF90_CLOSE(fID) CASE('-res'); nlon_ou=str2int(args(k)); k=k+1 nlat_ou=str2int(args(k)) CASE('-v'); vnam=args(k) CASE('-m'); fmsk=args(k) CASE('-f'); ffactor=str2real(args(k)) CASE('-t'); tfactor=str2real(args(k)) CASE DEFAULT; msg='Unrecognized argument "'//TRIM(arg)//'".'; ll=.TRUE. END SELECT IF(ll) THEN; WRITE(*,*)msg; STOP; END IF k=k+1 IF(k>nargs) EXIT END DO !--- CHECK OUTPUT GRID IS DEFINED IF(TRIM(fmsk)=='') fmsk='spec' IF(ALL(['noro','spec']/=fmsk)) THEN msg='Missing or wrong "-m" option ; can be "noro", "spec" or a mask file' CALL err(NF90_OPEN(fmsk,NF90_NOWRITE,fID)/=NF90_NOERR,msg) CALL nc(NF90_INQ_VARID(fID,"MaskOcean",vID),"MaskOcean") !--- MASK ID CALL nc(NF90_INQUIRE_VARIABLE(fID,vID,dimids=dIDs)) !--- DIMS IDS CALL nc(NF90_INQUIRE_DIMENSION(fID,dIDs(1),len=nlon_ou),'x')!--- NB LONG CALL nc(NF90_INQUIRE_DIMENSION(fID,dIDs(2),len=nlat_ou),'y')!--- NB LAT CALL nc(NF90_CLOSE(fID)) END IF IF(nlon_ou<=0.OR.nlat_ou<=0) THEN WRITE(*,*)'Missing or wrong "-res" arguments for output grid'; STOP END IF !=== READ THE INPUT FIELD ======================================================= CALL nc(NF90_OPEN(f_in,NF90_NOWRITE,fID)) WRITE(*,*)'>> Reading variable "'//TRIM(vnam)//'" from "'//TRIM(f_in)//'"...' !--- GET HEIGHT VARIABLE AND ITS DIMENSIONS CALL nc(NF90_INQ_VARID(fID,vnam,vID)) CALL nc(NF90_INQUIRE_VARIABLE (fID,vID,dimids=dIDs)) CALL nc(NF90_INQUIRE_DIMENSION(fID,dIDs(1),len=nlon_in,name=lonn)) CALL nc(NF90_INQUIRE_DIMENSION(fID,dIDs(2),len=nlat_in,name=latn)) WRITE(*,*)TRIM(vnam)//' is '//TRIM(lonn)//'('//TRIM(int2str(nlon_in))//')*' & //TRIM(latn)//'('//TRIM(int2str(nlat_in))//')' nlon_in=nlon_in-1 !--- DISTINCT POINTS NUMBER ALLOCATE(lon_in(nlon_in+1),lat_in(nlat_in),h(nlon_in+1,nlat_in)) CALL nc(NF90_INQ_VARID(fID,lonn,loID) ,lonn) CALL nc(NF90_INQ_VARID(fID,latn,laID) ,latn) CALL nc(NF90_GET_VAR (fID,loID,lon_in) ,lonn) CALL nc(NF90_GET_VAR (fID,laID,lat_in) ,latn) CALL nc(NF90_GET_ATT (fID,loID,'units',lonu),lonn) CALL nc(NF90_GET_ATT (fID,laID,'units',latu),latn) CALL nc(NF90_GET_VAR (fID,vID,h(:,:),[1,1],[nlon_in+1,nlat_in]),vnam) CALL nc(NF90_CLOSE(fID)) !--- CHECK WETHER GRID IS CORRECT (GLOBAL DOMAIN, IDENTIFIED UNITS...) dlon=ABS(lon_in(nlon_in+1)-lon_in(1)); dlat=ABS(lat_in(nlat_in)-lat_in(1)) CALL err(lonu(1:6)/='degree','Invalid longitudes unit: "'//TRIM(lonu)//'"') CALL err(latu(1:6)/='degree','Invalid latitudes unit: "' //TRIM(latu)//'"') CALL err(ABS(dlon-360.)>eps,'Longitudes domain is not global.') CALL err(ABS(dlat-180.)>eps, 'Latitudes domain is not global.') !--- ENSURE LONGITUDES ARE INCREASING AND LATITUDES ARE DECREASING lXdec=lon_in(1)>lon_in(nlon_in) lYinc=lat_in(1)=180.) EXIT; END DO IF(ix180>=nlon_in+1) THEN lon_in(:)=[lon_in(ix180:nlon_in)-360.,lon_in(1:ix180)] ALLOCATE(tmp2(nlon_in+1,nlat_in)); nn=nlon_in-ix180+1 tmp2(1:nn,:)=h(ix180:nlon_in,:); tmp2(nn+1:nlon_in+1,:)=h(1:ix180,:) DEALLOCATE(tmp2) END IF !--- REMOVE OCEAN ; FLIP FIELD (SPHEREPACK: LAT FIRST) ; INPUT BOOLEAN MASK WHERE(h(:,:)<0.) h(:,:)=0 idh=nlat_in; jdh=nlon_in; CALL flip(h) ALLOCATE(mski(idh,jdh)); mski(:,:)=0.; WHERE(h(:,:)>0.) mski(:,:)=1. !=== SPHERICAL HARMONICS ANALYSIS =============================================== !--- Allocate work vector (min. length depends on used routines) nt=2 ! MAX nt l1=MIN(nlat_in,(nlon_in+2)/2) IF(MODULO(nlon_in,2)==1) l1=MIN(nlat_in,(nlon_in+1)/2) l2=(nlat_in+1)/2 IF(lfast) THEN lwork=2*(nlat_in+1) ! shaeci/shseci lwork=MAX(lwork,nlat_in*(nt*nlon_in+MAX(3*l2,nlon_in))) ! shaec /shaes lwork=MAX(lwork,4*(nlat_in+1)) ! vhseci lwork=MAX(lwork,nlat_in*(2*nt*nlon_in+MAX(6*l2,nlon_in))+nlat_in*(2*l1*nt+1)) ! gradec lsh=2*nlat_in*l2+3*( (l1-2 )*(nlat_in+nlat_in-l1-1))/2+nlon_in+15 ! shaec /shsec lvh=4*nlat_in*l2+3*MAX(l1-2,0)*(nlat_in+nlat_in-l1-1) +nlon_in+15 ! vhseci/gradec ELSE lwork=5*nlat_in*l2+3*((l1-2)*(nlat_in+nlat_in-l1-1))/2 ! shaesi/shsesi lwork=MAX(lwork,(nt+1)*nlat_in*nlon_in) ! shaes /shses lwork=MAX(lwork,3*(MAX(l1-2,0)*(nlat_in+nlat_in-l1-1))/2+5*l2*nlat_in) ! vhsesi lwork=MAX(lwork,nlat_in*((2*nt+1)*nlon_in+2*l1*nt+1)) ! grades lsh=(l1*l2*(nlat_in+nlat_in-l1+1))/2+nlon_in+15 ! shaes /shses lvh= l1*l2*(nlat_in+nlat_in-l1+1) +nlon_in+15 ! vhsesi/grades END IF ALLOCATE(work(lwork)) ALLOCATE(wsha(lsh),wshs(lsh),wvh(lvh)) !--- Allocate spectral coefficients vectors mdab=l1; ndab=nlat_in; IF(.NOT.lfast) mdab=MIN(nlat_in,(nlon_in+2)/2) ALLOCATE(a(mdab,ndab),b(mdab,ndab)) isym=0; nt=1 !--- Symetries, fields nb !--- FIELD PROJECTION ON THE SPHERICAL HARMONICS BASE. WRITE(*,*)'>> Projecting fields on the spherical harmonics...' IF(lfast) THEN CALL shaeci(nlat_in,nlon_in,wsha,lsh,work,lwork,ierr) CALL error('shaeci',ierr) CALL shaec(nlat_in,nlon_in,isym,nt,h,idh,jdh,a,b,mdab,ndab,wsha,lsh,work,lwork,ierr) CALL error('shaec',ierr) ELSE CALL shaesi(nlat_in,nlon_in,wsha,lsh,work,lwork,ierr) CALL error('shaesi',ierr) CALL shaes(nlat_in,nlon_in,isym,nt,h,idh,jdh,a,b,mdab,ndab,wsha,lsh,work,lwork,ierr) CALL error('shaes',ierr) END IF !--- ALIASING DAMPLING FILTER ! WRITE(*,*)'>> Bi-Laplacian filtering to avoid Gibbs phenomenon...' ! CALL diffusion_filter(a,b) !=== INPUT/OUTPUT RESOLUTIONS AT EQUATOR (normalized with Earth radius) !--- The area of a cell at (lam,phi) of size(dl,dp) is: dl.SIN(dp).COS(phi) !--- At equator, Res=SQRT(dl.SIN(dp)) ; with dl=2.pi/nlon and dp=pi/nlat: !--- Res=SQRT(2.pi.SIN(pi/nlat)/nlon)~pi*SQRT(2/(nlon*nlat)) !--- Note: nlat is the slices number = latitude points number -1 D1=SQRT(2.*xpi*SIN(xpi/(nlat_in-1))/nlon_in) !--- Input grid D2=SQRT(2.*xpi*SIN(xpi/(nlat_ou-1))/nlon_ou) !--- Output grid !=== FILTER FACTOR EQUAL TO ZERO => NO FILTERING lfilter=ffactor/=0. !=== DEFAULT TRANSITION SCALE: INPUT GRID RESOLUTION WRITE(*,*)'tfactor=',tfactor del1=D1; del2=D1+(D2-D1)*tfactor WRITE(*,*)'2*D1,del1,D2,del2=',2*D1,del1,D2,del2 !=== SCALES SEPARATION AT THE OUTPUT GRID RESOLUTION ============================ nt=2 WRITE(*,*)'>> Scales separation at '//TRIM(real2str(D2/d2r))//' degrees (deta'& //'ils below '//TRIM(real2str(60*D1/d2r))//' minutes removed)...' ALLOCATE(as(mdab,ndab,nt),bs(mdab,ndab,nt)) DO n=1,nt; as(:,:,n)=a; bs(:,:,n)=b; END DO CALL lowpass_filter(as(:,:,1),bs(:,:,1), D2,del2) !--- LARGE SCALES CALL bandpass_filter(as(:,:,2),bs(:,:,2),2*D1,del1,D2,del2) !--- SMALL SCALES !--- BACKWARD TRANSFORM FOR LARGE AND SUB-CELL SCALES OROGRAPHYS WRITE(*,*)'>> Backward transform of large and sub-cell scales orographies...' ALLOCATE(hs(idh,jdh,nt)) IF(lfast) THEN CALL shseci(nlat_in,nlon_in,wshs,lsh,work,lwork,ierr) CALL error('shseci',ierr) CALL shsec(nlat_in,nlon_in,isym,nt,hs,idh,jdh,as,bs,mdab,ndab,wshs,lsh,work,lwork,ierr) CALL error('shsec',ierr) ELSE CALL shsesi(nlat_in,nlon_in,wshs,lsh,work,lwork,ierr) CALL error('shsesi',ierr) CALL shses(nlat_in,nlon_in,isym,nt,hs,idh,jdh,as,bs,mdab,ndab,wshs,lsh,work,lwork,ierr) CALL error('shses',ierr) END IF WHERE(mski==0.); hs(:,:,1)=0.; hs(:,:,2)=0.; END WHERE hs(:,:,2)=hs(:,:,2)**2 !=== COMPUTE GRADIENT ; n=1: large scale ; n=2: sub-cell grid =================== WRITE(*,*)'>> Computing large and sub-cell scales gradients...' ALLOCATE(dxZ(idh,jdh,nt),dyZ(idh,jdh,nt)) IF(lfast) THEN CALL vhseci(nlat_in,nlon_in,wvh,lvh,work,lwork,ierr) CALL error('vhseci',ierr) DO n=1,2 CALL gradec(nlat_in,nlon_in,isym,1,dyZ(:,:,n),dxZ(:,:,n),idh,jdh, & as(:,:,n),bs(:,:,n),mdab,ndab,wvh,lvh,work,lwork,ierr) END DO CALL error('gradec',ierr) ELSE CALL vhsesi(nlat_in,nlon_in,wvh,lvh,work,lwork,ierr) CALL error('vhsesi',ierr) DO n=1,2 CALL gradec(nlat_in,nlon_in,isym,1,dyZ(:,:,n),dxZ(:,:,n),idh,jdh,as(:,:,n),& bs(:,:,n),mdab,ndab,wvh,lvh,work,lwork,ierr) END DO CALL error('grades',ierr) END IF DEALLOCATE(as,bs) dxZ=dxZ/REarth; dyZ=dyZ/REarth IF(lat_in(nlat_in)>lat_in(1)) dyZ=-dyZ WHERE(mski==0.) dxZ(:,:,1)=0.; dyZ(:,:,1)=0. dxZ(:,:,2)=0.; dyZ(:,:,2)=0. END WHERE ALLOCATE(dH(idh,jdh,6)) dH(:,:,1)=dxZ(:,:,1)*dxZ(:,:,1); dH(:,:,4)=dxZ(:,:,2)*dxZ(:,:,2) dH(:,:,2)=dyZ(:,:,1)*dyZ(:,:,1); dH(:,:,5)=dyZ(:,:,2)*dyZ(:,:,2) dH(:,:,3)=dxZ(:,:,1)*dyZ(:,:,1); dH(:,:,6)=dxZ(:,:,2)*dyZ(:,:,2) DEALLOCATE(dxZ,dyZ) !=============================================================================== IF(lfilter) THEN !=== FILTER TO REMOVE ALIASING =========================== !=============================================================================== WRITE(*,*)'>> Smoothing large and sub-cell scales fields at '// & TRIM(real2str(ffactor*D2/d2r))//' degrees...' CALL spatial_filter_m(dH ,ffactor*D2,del2) CALL spatial_filter_1(hs(:,:,2),ffactor*D2,del2) END IF DEALLOCATE(work) !=============================================================================== !=== DEAL WITH OUTPUT GRID ===================================================== intl=0 !--- OUTPUT GRID (CONTAINS A LONGITUDE REDUNDANT POINT FOR NOW) lon_ou = [(360.*DBLE(n)/DBLE(nlon_ou ), n = 0, nlon_ou)] + lon_in(1) lat_ou = [(180.*DBLE(n)/DBLE(nlat_ou-1), n = nlat_ou-1, 0, -1)] - 90. la1 = MIN(nlat_in,(nlon_in+1)/2); la2 = (nlat_in+1)/2 lb1 = MIN(nlat_ou,(nlon_ou+1)/2); lb2 = (nlat_ou+1)/2 lwa = 4*nlat_in*la2+3*MAX(la1-2,0)*(2*nlat_in-la1-1)+la2+nlon_in+15 lwb = 4*nlat_ou*lb2+3*MAX(lb1-2,0)*(2*nlat_ou-lb1-1)+ nlon_ou+15 lsave=lwa+lwb l1 = MAX(nlat_in,nlat_ou) l2 = MAX(nlon_in,nlon_ou) lwork = 2*l1*(8*MIN(l1,(l2+2)/2)+4*l2+3) ldwork = 2*l1*(l1+1)+1 ALLOCATE(wsave(lsave),work(lwork),dwork(ldwork)) !--- Latitude grid: equally spaced partition of [-pi/2,pi/2] igrid_in(:)=[-1,1] !--- NP->SP, nlat*nlon igrid_ou(:)=[-1,0] !--- NP->SP, nlon*nlat !--- BUILD FRACTIONAL LAND MASK msko AND GEOPOTENTIAL ('noro' CASE) SELECT CASE(fmsk) CASE('noro') WRITE(*,*)'>> Computing mask & geop (grid_noro compatible)...' ALLOCATE(msko(nlon_ou+1,nlat_ou), Zphi(nlon_ou+1,nlat_ou)) CALL flip(h) CALL grid_noro0(lon_in*d2r, lat_in*d2r, h,lon_ou*d2r, lat_ou*d2r, Zphi, msko) msko = msko(1:nlon_ou,:) Zphi = Zphi(1:nlon_ou,:) CASE('spec') WRITE(*,*)'>> Computing mask in spectral space...' ALLOCATE(msko(nlon_ou,nlat_ou)) CALL trssph(intl, igrid_in, nlon_in, nlat_in, mski, & igrid_ou, nlon_ou, nlat_ou, msko, wsave, lsave, lsvmin,& work, lwork, lwkmin, dwork, ldwork, ierr) intl=1 CASE DEFAULT WRITE(*,*)'>> Trying to read mask from "'//TRIM(fmsk)//'" file' ALLOCATE(msko(nlon_ou,nlat_ou)) msg='Missing or wrong "-m" option ; can be "noro", "spec" or a mask file' CALL err(NF90_OPEN(fmsk,NF90_NOWRITE,fID)/=NF90_NOERR,msg) CALL nc(NF90_INQ_VARID(fID,"MaskOcean",vID),"MaskOcean") !--- MASK ID CALL nc(NF90_GET_VAR(fID,vID,msko(:,:))) !--- MASK CALL nc(NF90_CLOSE(fID)) msko(:,:)=1.0-msko(:,:) END SELECT DEALLOCATE(mski,h) !--- GET RID OF REDUNDANT LONGITUDE (USELESS FOR SPHEREPACK) lon_ou=lon_ou(1:nlon_ou) !=== REGRIDDING ON THE TARGET OUTPUT GRID ====================================== WRITE(*,*)'>> Regridding on the target grid...' !--- COMPUTE BOOLEAN OUTPUT MASK ALLOCATE(mask(nlon_ou,nlat_ou)); mask=0_1; WHERE(msko>=0.5) mask=1_1 !--- MEAN OROGRAPHY ALLOCATE(h0(nlon_ou,nlat_ou)) CALL trssph(intl, igrid_in, nlon_in, nlat_in, hs(:,:,1), & igrid_ou, nlon_ou, nlat_ou, h0, & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) WHERE(h0<0..OR.mask==0_1) h0(:,:)=0. !--- STANDARD DEVIATION OF SUB-CELL SCALES OROGRAPHY ALLOCATE(mu(nlon_ou,nlat_ou)) CALL trssph(1, igrid_in, nlon_in, nlat_in, hs(:,:,2), & igrid_ou, nlon_ou, nlat_ou, mu, & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) DEALLOCATE(hs) WHERE(mu(:,:)<0..OR.mask==0_1) mu(:,:)=0.; mu=SQRT(mu) !--- SQUARE OF LARGE AND SUB-CELL SCALES ZONAL SLOPE ALLOCATE(dxZ2(nlon_ou,nlat_ou,2)) CALL trssph(1, igrid_in, nlon_in, nlat_in, dH (:,:,1), & igrid_ou, nlon_ou, nlat_ou, dxZ2(:,:,1), & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) CALL trssph(1, igrid_in, nlon_in, nlat_in, dH (:,:,4), & igrid_ou, nlon_ou, nlat_ou, dxZ2(:,:,2), & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) WHERE(mask==0_1); dxZ2(:,:,1)=0.; dxZ2(:,:,2)=0.; END WHERE !--- SQUARE OF LARGE AND SUB-CELL SCALES MERIDIONAL SLOPE ALLOCATE(dyZ2(nlon_ou,nlat_ou,2)) CALL trssph(1, igrid_in, nlon_in, nlat_in, dH (:,:,2), & igrid_ou, nlon_ou, nlat_ou, dyZ2(:,:,1), & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) CALL trssph(1, igrid_in, nlon_in, nlat_in, dH (:,:,5), & igrid_ou, nlon_ou, nlat_ou, dyZ2(:,:,2), & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) WHERE(mask==0_1); dyZ2(:,:,1)=0.; dyZ2(:,:,2)=0.; END WHERE !--- PRODUCT OF LARGE AND SUB-CELL SCALES MERIDIONAL AND ZONAL SLOPES ALLOCATE(dxyZ(nlon_ou,nlat_ou,2)) CALL trssph(1, igrid_in, nlon_in, nlat_in, dH (:,:,3), & igrid_ou, nlon_ou, nlat_ou, dxyZ(:,:,1), & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) CALL trssph(1, igrid_in, nlon_in, nlat_in, dH (:,:,6), & igrid_ou, nlon_ou, nlat_ou, dxyZ(:,:,2), & wsave, lsave, lsvmin, work, lwork, lwkmin, dwork, ldwork, ierr) WHERE(mask==0_1); dxyZ(:,:,1)=0.; dxyZ(:,:,2)=0.; END WHERE DEALLOCATE(dH) !--- COMPUTE LARGE AND SUB-CELL SCALES DERIVED QUANTITIES ALLOCATE(Xk(nlon_ou,nlat_ou,2)); Xk=(dxZ2+dyZ2)/2. ALLOCATE(Xl(nlon_ou,nlat_ou,2)); Xl=(dxZ2-dyZ2)/2. DEALLOCATE(dxZ2,dyZ2) ALLOCATE(Xm(nlon_ou,nlat_ou,2)); Xm=dxyZ DEALLOCATE(dxyZ) ALLOCATE(Xp(nlon_ou,nlat_ou,2),Xq(nlon_ou,nlat_ou,2)) Xp=Xk; Xq=Xk; Xk=SQRT(Xl**2+Xm**2); Xp=Xp-Xk; Xq=Xq+Xk DEALLOCATE(Xk) WHERE(ABS(Xm)<=1e-16) Xm=1e-16*SIGN(1.,Xm) ALLOCATE(Zthe(nlon_ou,nlat_ou)); Zthe=0.5*ATAN2(Xm(:,:,1),Xl(:,:,1))/d2r DEALLOCATE(Xm,Xl) ALLOCATE(Zgam(nlon_ou,nlat_ou)); Zgam=0. WHERE(Xq(:,:,1)>0..AND.Xp(:,:,1)>1.E-8) Zgam(:,:)=Xp(:,:,1)/Xq(:,:,1) DEALLOCATE(Xp) ALLOCATE(Zsig(nlon_ou,nlat_ou)); Zsig=SQRT(Xq(:,:,2)) WHERE(Xq(:,:,2)<=1.E-16) Zsig(:,:)=1.E-8 DEALLOCATE(Xq) WHERE(mask==0_1); Zthe=0.; Zgam=0.; Zsig=0.; END WHERE !--- Save the data WRITE(*,*)'>> Saving fields in a netcdf file...' res_in=TRIM(int2str(nlon_in))//'x'//TRIM(int2str(nlat_in)) res_ou=TRIM(int2str(nlon_ou))//'x'//TRIM(int2str(nlat_ou)) f_ou='make_sso_'//TRIM(res_ou)//'_'//TRIM(f_in) fnam=f_ou CALL nc(NF90_CREATE(f_ou,NF90_CLOBBER,fID)) CALL nc(NF90_DEF_DIM(fID,'x',nlon_ou,xID)) CALL nc(NF90_DEF_VAR(fID,'x',NF90_REAL,xID,loID) ,'x') CALL nc(NF90_PUT_ATT(fID,loID,'long_name','Longitude'),'x') CALL nc(NF90_PUT_ATT(fID,loID,'units','degrees_east') ,'x') CALL nc(NF90_DEF_DIM(fID,'y',nlat_ou,yID)) CALL nc(NF90_DEF_VAR(fID,'y',NF90_REAL,yID,laID) ,'y') CALL nc(NF90_PUT_ATT(fID,laID,'long_name','Latitude') ,'y') CALL nc(NF90_PUT_ATT(fID,laID,'units','degrees_north'),'y') CALL nc(NF90_DEF_VAR(fID,'mask',NF90_REAL,[xID,yID],mskID),'mask') IF(fmsk=='noro') & CALL nc(NF90_DEF_VAR(fID,'Zphi',NF90_REAL,[xID,yID],phiID),'Zphi') CALL nc(NF90_DEF_VAR(fID,'Zmea',NF90_REAL,[xID,yID],meaID),'Zmea') CALL nc(NF90_DEF_VAR(fID,'mu' ,NF90_REAL,[xID,yID], muID),'mu' ) CALL nc(NF90_DEF_VAR(fID,'Zsig',NF90_REAL,[xID,yID],sigID),'Zsig') CALL nc(NF90_DEF_VAR(fID,'Zgam',NF90_REAL,[xID,yID],gamID),'Zgam') CALL nc(NF90_DEF_VAR(fID,'Zthe',NF90_REAL,[xID,yID],theID),'Zthe') CALL nc(NF90_DEF_VAR(fID,'Zpic',NF90_REAL,[xID,yID],picID),'Zpic') CALL nc(NF90_DEF_VAR(fID,'Zval',NF90_REAL,[xID,yID],valID),'Zval') CALL nc(NF90_PUT_ATT(fID,mskID,'long_name','Fractional land mask' ),'mask') IF(fmsk=='noro') & CALL nc(NF90_PUT_ATT(fID,phiID,'long_name','Geopotential' ),'Zphi') CALL nc(NF90_PUT_ATT(fID,meaID,'long_name','Mean orography' ),'Zmea') CALL nc(NF90_PUT_ATT(fID, muID,'long_name','Std deviation of sub-cell scales orography'),'mu' ) CALL nc(NF90_PUT_ATT(fID,sigID,'long_name','Slope along principal axis' ),'Zsig') CALL nc(NF90_PUT_ATT(fID,gamID,'long_name','Anisotropy (aspect ratio)' ),'Zgam') CALL nc(NF90_PUT_ATT(fID,theID,'long_name','Orientation (principal axis)' ),'Zthe') CALL nc(NF90_PUT_ATT(fID,picID,'long_name','Maximum height' ),'Zpic') CALL nc(NF90_PUT_ATT(fID,valID,'long_name','Minimum height' ),'Zval') CALL nc(NF90_PUT_ATT(fID,mskID,'units','none' ),'mask') IF(fmsk=='noro') & CALL nc(NF90_PUT_ATT(fID,phiID,'units','m' ),'Zphi') CALL nc(NF90_PUT_ATT(fID,meaID,'units','m' ),'Zmea') CALL nc(NF90_PUT_ATT(fID, muID,'units','m' ),'mu' ) CALL nc(NF90_PUT_ATT(fID,sigID,'units','m/m' ),'Zsig') CALL nc(NF90_PUT_ATT(fID,gamID,'units','none' ),'Zgam') CALL nc(NF90_PUT_ATT(fID,theID,'units','degrees'),'Zthe') CALL nc(NF90_PUT_ATT(fID,picID,'units','m' ),'Zpic') CALL nc(NF90_PUT_ATT(fID,valID,'units','m' ),'Zval') CALL nc(NF90_PUT_ATT(fID,NF90_GLOBAL,'Conventions','COARDS/CF-1.0')) CALL nc(NF90_PUT_ATT(fID,NF90_GLOBAL,'Initial_Grid',TRIM(res_in))) CALL nc(NF90_PUT_ATT(fID,NF90_GLOBAL,'history',TRIM(call_seq))) CALL nc(NF90_ENDDEF(fID)) CALL nc(NF90_PUT_VAR(fID, loID,lon_ou),'x' ) CALL nc(NF90_PUT_VAR(fID, laID,lat_ou),'y' ) CALL nc(NF90_PUT_VAR(fID,mskID,msko),'mask') IF(fmsk=='noro') & CALL nc(NF90_PUT_VAR(fID,phiID,Zphi),'Zphi') CALL nc(NF90_PUT_VAR(fID,meaID,h0 ),'Zmea') CALL nc(NF90_PUT_VAR(fID, muID,mu ),'mu' ) CALL nc(NF90_PUT_VAR(fID,sigID,Zsig),'Zsig') CALL nc(NF90_PUT_VAR(fID,gamID,Zgam),'Zgam') CALL nc(NF90_PUT_VAR(fID,theID,Zthe),'Zthe') CALL nc(NF90_PUT_VAR(fID,picID, h0+2*mu ),'Zpic') CALL nc(NF90_PUT_VAR(fID,valID,MAX(0.,h0-2*mu)),'Zval') CALL nc(NF90_CLOSE(fID)) WRITE(*,*)'Finished.' CONTAINS !------------------------------------------------------------------------------- ! SUBROUTINE diffusion_filter(a,b) ! !------------------------------------------------------------------------------- ! Purpose: ECMWF bi-laplacian diffusion filter to limit aliasing. ! Note that one third of the frequencies is skipped to allow some accuracy for ! derived quantities computation. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(INOUT) :: a(:,:), b(:,:) !------------------------------------------------------------------------------- ! Local variables: INTEGER :: m REAL, ALLOCATABLE :: fn(:) !------------------------------------------------------------------------------- ALLOCATE(fn(ndab)); fn=[(REAL(m*(m-1)),m=1,ndab)] a(1,:)=a(1,:)/(1+4.*fn(:)/fn(ndab))**2 b(1,:)=b(1,:)/(1+4.*fn(:)/fn(ndab))**2 DO m=1,ndab IF(m<=2*ndab/3) THEN a(m,:)=a(m,:)/(1+5.*fn(:)/fn(ndab))**2 b(m,:)=b(m,:)/(1+5.*fn(:)/fn(ndab))**2 ELSE a(m,:)=0. b(m,:)=0. END IF END DO END SUBROUTINE diffusion_filter ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE lowpass_filter(a,b,d,dd) ! !------------------------------------------------------------------------------- ! Purpose: ECMWF lowpass filter. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(INOUT) :: a(:,:), b(:,:) REAL, INTENT(IN) :: d, dd !------------------------------------------------------------------------------- ! Local variables: INTEGER :: m, na REAL, ALLOCATABLE :: h(:) !------------------------------------------------------------------------------- na=SIZE(a,1) IF(ALLOCATED(h)) THEN; IF(SIZE(h)/=na) DEALLOCATE(h); END IF IF(.NOT.ALLOCATED(h)) ALLOCATE(h(na)) CALL lowpass(d,dd,h) DO m=1,SIZE(h); a(m,:)=a(m,:)*h; b(m,:)=b(m,:)*h; END DO END SUBROUTINE lowpass_filter ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE bandpass_filter(a,b,d1,dd1,d2,dd2) ! !------------------------------------------------------------------------------- ! Purpose: ECMWF bandpass filter. Calls lowpass filter with 2 different scales. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(INOUT) :: a(:,:), b(:,:) REAL, INTENT(IN) :: d1, dd1, d2, dd2 !------------------------------------------------------------------------------- ! Local variables: INTEGER :: m, na REAL, ALLOCATABLE :: h(:), hh(:) !------------------------------------------------------------------------------- na=SIZE(a,1) IF(ALLOCATED(hh)) THEN; IF(SIZE(hh)/=na) DEALLOCATE(hh); END IF IF(ALLOCATED(h )) THEN; IF(SIZE(h )/=na) DEALLOCATE(h ); END IF IF(.NOT.ALLOCATED(hh)) ALLOCATE(hh(na)) IF(.NOT.ALLOCATED(h )) ALLOCATE(h (na)) CALL lowpass(d1,dd1,hh) CALL lowpass(d2,dd2,h ); hh=hh-h DO m=1,SIZE(h); a(m,:)=a(m,:)*hh; b(m,:)=b(m,:)*hh; END DO END SUBROUTINE bandpass_filter ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE lowpass(d,dd,h) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(IN) :: d, dd ! d is DELTA/REarth ; dd is delta/REarth REAL, INTENT(INOUT) :: h(:) !------------------------------------------------------------------------------- INTEGER :: m, n REAL :: hd !------------------------------------------------------------------------------- n=SIZE(h); hd=0.5*d h(:)=[((SIN(m*(hd-dd))/m+(COS(hp+m*hd)*SIN(hp+m*dd))/(hp/dd+m) & + SIN(m*(hd+dd))/m+(COS(hp-m*hd)*SIN(hp-m*dd))/(hp/dd-m))**2/d/d,m=1,n)] END SUBROUTINE lowpass ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE spatial_filter_1(u,D,dd) ! !------------------------------------------------------------------------------- ! Purpose: Spatial filter ; using spectral lowpass filter. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(INOUT) :: u(:,:) REAL, INTENT(IN) :: D, dd !------------------------------------------------------------------------------- ! Local variables: REAL, ALLOCATABLE :: uu(:,:,:) !------------------------------------------------------------------------------- ALLOCATE(uu(SIZE(u,1),SIZE(u,2),1)); uu(:,:,1)=u CALL spatial_filter_m(uu,D,dd) u=uu(:,:,1) DEALLOCATE(uu) END SUBROUTINE spatial_filter_1 ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE spatial_filter_m(u,D,dd) ! !------------------------------------------------------------------------------- ! Purpose: Spatial filter ; using spectral lowpass filter. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(INOUT) :: u(:,:,:) REAL, INTENT(IN) :: D, dd !------------------------------------------------------------------------------- ! Local variables: INTEGER :: ku REAL, ALLOCATABLE :: aa(:,:,:),bb(:,:,:) !------------------------------------------------------------------------------- ku=SIZE(u,3) !--- NUMBER OF FIELDS TO SMOOTH ALLOCATE(aa(mdab,ndab,ku),bb(mdab,ndab,ku)) !--- PROJECTION OF THE SUB-CELL SCALES FIELDS ON THE SPHERICAL HARMONICS BASE. IF(lfast) THEN CALL shaec(nlat_in,nlon_in,0,ku,u,idh,jdh,aa,bb,mdab,ndab,wsha,lsh,work,lwork,ierr) CALL error('shaec',ierr) ELSE CALL shaes(nlat_in,nlon_in,0,ku,u,idh,jdh,aa,bb,mdab,ndab,wsha,lsh,work,lwork,ierr) CALL error('shaes',ierr) END IF !--- LOW PASS FILTER AT THE OUTPUT GRID RESOLUTION DO n=1,ku; CALL lowpass_filter(aa(:,:,n),bb(:,:,n),D,dd); END DO !--- BACKWARD TRANSFORM FOR MEAN SUB-CELL SCALES PARAMETERS IF(lfast) THEN CALL shsec(nlat_in,nlon_in,0,ku,u,idh,jdh,aa,bb,mdab,ndab,wshs,lsh,work,lwork,ierr) CALL error('shsec',ierr) ELSE CALL shses(nlat_in,nlon_in,0,ku,u,idh,jdh,aa,bb,mdab,ndab,wshs,lsh,work,lwork,ierr) CALL error('shses',ierr) END IF DEALLOCATE(aa,bb) END SUBROUTINE spatial_filter_m ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE grid_noro0(xin,yin,zin,xou,you,zphi,mask) ! !------------------------------------------------------------------------------- ! Purpose: Sub-cell scales orographic parameters coomputation. Angles in radians ! Notes: Input coordinates contain a longitude periodic redundant point. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, INTENT(IN) :: xin(:), yin(:) !--- INPUT COORDINATES (nxi) (nyi) REAL, INTENT(IN) :: zin(:,:) !--- INPUT FIELD (nxi, nyi) REAL, INTENT(IN) :: xou(:), you(:) !--- OUTPUT COORDINATES (nxo+1) (nyo) REAL, INTENT(OUT) :: zphi(:,:) !--- GEOPOTENTIAL (nxo+1, nyo) REAL, INTENT(OUT) :: mask(:,:) !--- FRACTIONAL MASK (nxo+1, nyo) !------------------------------------------------------------------------------- ! Local variables: REAL, ALLOCATABLE :: xi(:), xo_w(:), yo_s(:), zi(:,:), num_tot(:,:) REAL, ALLOCATABLE :: yi(:), xo_e(:), yo_n(:), w(:,:), num_lan(:,:) REAL :: dx, dy, wx, wy, zx, zy, ex, ey INTEGER :: nxi, nxo, i, ii, nn INTEGER :: nyi, nyo, j, jj, di !------------------------------------------------------------------------------- nxi=SIZE(xin); nxo=SIZE(xou)-1; ex=SIGN(1.,xin(nxi)-xin(1)) nyi=SIZE(yin); nyo=SIZE(you); ey=SIGN(1.,yin(nyi)-yin(1)) !--- MARGIN TO ENSURE OUTPUT CELLS HAVE MATCHING INPUT CELLS di=CEILING(1.+MAXVAL([xou(2:nxo+1)-xou(1:nxo)])/MINVAL([xin(2:nxi)-xin(1:nxi-1)])) !--- EXTENSION OF THE INPUT DATABASE TO PROCEED COMPUTATIONS AT BOUNDARIES ALLOCATE(xi(nxi+2*di)); xi(:)=[xin(nxi-di:nxi-1)-2.*xpi,xin,xin(2:di+1)+2.*xpi] ALLOCATE(yi(nyi+2)); yi(:)=[2.*yin(1)-yin(2),yin,2.*yin(nyi)-yin(nyi-1)] ALLOCATE(zi(nxi+2*di,nyi+2)) zi(1 +di:nxi+ di,2:nyi+1)=zin(:,:) zi(1 : di,2:nyi+1)=zin(nxi-di:nxi-1,:) zi(1+nxi +di:nxi+2*di,2:nyi+1)=zin(2 :di+1 ,:) zi(1 :nxi/2+di, 1)=zi (1+nxi/2:nxi +di, 2) zi(1+nxi/2+di:nxi+2*di, 1)=zi (1 :nxi/2+di, 2) zi(1 :nxi/2+di, nyi+2)=zi (1+nxi/2:nxi +di,nyi+1) zi(1+nxi/2+di:nxi+2*di, nyi+2)=zi (1 :nxi/2+di,nyi+1) ! write(*,'(a,2f10.5,a,2f10.5)')'xin=',xin(1:2),'...',xin(nxi-1:nxi) ! write(*,'(a,2f10.5,a,2f10.5)')'yin=',yin(1:2),'...',yin(nyi-1:nyi) ! write(*,'(a,2f10.5,a,2f10.5)')'xou=',xou(1:2),'...',xou(nxo:nxo+1) ! write(*,'(a,2f10.5,a,2f10.5)')'you=',you(1:2),'...',you(nyo-1:nyo) ! write(*,*)'xi=',xi(1:di+1),'...',xi(nxi+di:nxi+2*di) ! write(*,'(a,3f10.5,a,3f10.5)')'yi=',yi(1:3),'...',yi(nyi:nyi+2) !--- COMPUTE LIMITS OF MODEL GRIDPOINT AREA (REGULAR GRID) bdac ALLOCATE(xo_w(nxo+1)); xo_w=(xou+[2.*xou( 1)-xou( 2),xou(1:nxo )])/2.0 ALLOCATE(yo_s(nyo )); yo_s=(you+[2.*you( 1)-you( 2),you(1:nyo-1)])/2.0 ALLOCATE(xo_e(nxo+1)); xo_e=(xou+[xou(2:nxo+1),2.*xou(nxo+1)-xou(nxo)])/2.0 ALLOCATE(yo_n(nyo )); yo_n=(you+[you(2:nyo ),2.*you(nyo)-you(nyo-1)])/2.0 !--- INITIALIZATIONS: ALLOCATE(w(nxo+1,nyo)); w(:,:)=0.0; zphi(:,:)=0.0 !--- SUMMATION OVER GRIDPOINT AREA zx=2.*xpi/REAL(nxi) !--- LON CELL LENGTH (1-SPHERE) dx=zx/2. !--- HALF " ALLOCATE(num_tot(nxo+1,nyo)); num_tot(:,:)=0. ALLOCATE(num_lan(nxo+1,nyo)); num_lan(:,:)=0. DO ii=1,nxo+1 DO jj=1,nyo DO j=2,nyi+1 zy=xpi/REAL(nyi)*COS(yi(j)) !--- LAT CELL LENGTH (1-SPHERE) dy=zy/2. wy=MAX(0.,MIN(zy,MINVAL(dy+ey*[yo_n(jj)-yi(j),yi(j)-yo_s(jj)]))) IF(wy==0.) CYCLE DO i=2,nxi+2*di-1 wx=MAX(0.,MIN(zx,MINVAL(dx+ex*[xo_e(ii)-xi(i),xi(i)-xo_w(ii)])*COS(yi(j)))) IF(wx==0.) CYCLE num_tot(ii,jj)=num_tot(ii,jj)+1.0 IF(zi(i,j)>=1.) num_lan(ii,jj)=num_lan(ii,jj)+1.0 w (ii,jj)= w(ii,jj)+wx*wy zphi(ii,jj)=zphi(ii,jj)+wx*wy*zi(i,j) END DO END DO END DO END DO !--- COMPUTE FRACTIONAL MASK AND GEOPOTENTIAL WHERE(w(:,:)/=0.0) mask=num_lan(:,:)/num_tot(:,:) nn=COUNT(w(:,:)==0.0) IF(nn/=0) WRITE(*,*)'Problem with weight ; vanishing occurrences: ',nn WHERE(w/=0.0) zphi=zphi/w WHERE(w==0.0.OR.mask<0.1) zphi=0.0 zphi(nxo+1,:)=zphi(1,:) zphi(:, 1)=SUM(w(1:nxo, 1)*zphi(1:nxo, 1))/SUM(w(1:nxo, 1)) zphi(:,nyo)=SUM(w(1:nxo,nyo)*zphi(1:nxo,nyo))/SUM(w(1:nxo,nyo)) END SUBROUTINE grid_noro0 ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE nc(ncres,var) ! !------------------------------------------------------------------------------- ! Purpose: NetCDF errors handling. !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: INTEGER, INTENT(IN) :: ncres CHARACTER(LEN=*), OPTIONAL, INTENT(IN) :: var !------------------------------------------------------------------------------- ! Local variables: CHARACTER(LEN=256) :: msg !------------------------------------------------------------------------------- IF(ncres/=NF90_NoErr) THEN msg='Error in routine '//TRIM(sub) IF(fnam/='') msg=TRIM(msg)//' for file "'//TRIM(fnam)//'"' IF(PRESENT(var)) msg=TRIM(msg)//'" and variable "'//TRIM(var)//'"' WRITE(*,*)TRIM(msg)//': '//NF90_STRERROR(ncres); STOP END IF END SUBROUTINE nc ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! ELEMENTAL FUNCTION int2str(val) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: convert an integer into a string. !------------------------------------------------------------------------------- ! Arguments: CHARACTER(LEN=128) :: int2str INTEGER, INTENT(IN) :: val !------------------------------------------------------------------------------- ! Local variable: CHARACTER(LEN=128) :: s1 !------------------------------------------------------------------------------- WRITE(s1,*)val; int2str=TRIM(ADJUSTL(s1)) END FUNCTION int2str !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE err(ierr,str) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Argument: LOGICAL, INTENT(IN) :: ierr CHARACTER(LEN=*), INTENT(IN) :: str !------------------------------------------------------------------------------- IF(.NOT.ierr) RETURN WRITE(*,*)TRIM(str) STOP END SUBROUTINE err ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE error(sub,ierr) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: CHARACTER(LEN=*), INTENT(IN) :: sub INTEGER, INTENT(IN) :: ierr !------------------------------------------------------------------------------- IF(ierr==0) RETURN WRITE(*,*)'In routine "'//TRIM(sub)//'": error in the specification of argume& nt nr. '//TRIM(int2str(ierr)) STOP END SUBROUTINE error ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! ELEMENTAL FUNCTION real2str(val) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: convert an integer into a string. !------------------------------------------------------------------------------- ! Arguments: CHARACTER(LEN=128) :: real2str REAL, INTENT(IN) :: val INTEGER :: r, s !------------------------------------------------------------------------------- s=NINT(val); r=NINT(1000.*(val-REAL(s))) IF(r<0) THEN; s= INT(val); r= INT(1000.*(val-REAL(s))); END IF real2str=TRIM(ADJUSTL(int2str(s)))//'.'//TRIM(ADJUSTL(int2str(r))) END FUNCTION real2str !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! SUBROUTINE flip(a) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Arguments: REAL, ALLOCATABLE, INTENT(INOUT) :: a(:,:) !------------------------------------------------------------------------------- ! Local variables: INTEGER :: k, n REAL, ALLOCATABLE :: tmp(:,:) !------------------------------------------------------------------------------- n=SIZE(a,2) ALLOCATE(tmp(n,SIZE(a,1))); DO k=1,n; tmp(k,:)=a(:,k); END DO CALL MOVE_ALLOC(FROM=tmp,TO=a) END SUBROUTINE flip ! !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ELEMENTAL LOGICAL FUNCTION is_int(str) RESULT(out) !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: tests if str is a valid integer number !------------------------------------------------------------------------------- CHARACTER(LEN=*), INTENT(IN) :: str INTEGER :: k, k0 !------------------------------------------------------------------------------- out=LEN_TRIM(str)/=0; IF(.NOT.out) RETURN k0=1; IF(INDEX('+-',str(1:1))/=0) k0=2 DO k=k0,LEN_TRIM(str); IF(INDEX('0123456789',str(k:k))==0) out=.FALSE.; END DO END FUNCTION is_int !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ELEMENTAL LOGICAL FUNCTION is_dec(str) RESULT(out) !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: tests if str is a valid decimal number or an integer !------------------------------------------------------------------------------- CHARACTER(LEN=*), INTENT(IN) :: str INTEGER :: ix !------------------------------------------------------------------------------- out=LEN_TRIM(str)/=0; IF(.NOT.out) RETURN !--- TEST IF THE NUMBER IS A PURE INTEGER IF(is_int(str)) RETURN !--- CHECK FOR POINT SEPARATOR (SHOULD HAVE A STRING INT BEFORE AND/OR AFTER ix=INDEX(str,'.'); out=ix>0.AND.LEN_TRIM(str)/=1; IF(.NOT.out) RETURN !--- CHECK SURROUNDING STRINGS ARE INTEGERS out=is_int(str(1:ix-1)); IF(ix==LEN_TRIM(str)) RETURN out=out.AND.is_int(str(ix+1:LEN_TRIM(str))) END FUNCTION is_dec !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ELEMENTAL LOGICAL FUNCTION is_num(str) RESULT(out) !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: test if str is a valid integer/decimal/scientific notation number !------------------------------------------------------------------------------- CHARACTER(LEN=*), INTENT(IN) :: str INTEGER :: ix, ls !------------------------------------------------------------------------------- out=LEN_TRIM(str)/=0; IF(.NOT.out) RETURN; ls=LEN_TRIM(str) !--- TEST IF THE NUMBER IS A PURE INTEGER OR A PURE DECIMAL NUMBER IF(is_int(str)) RETURN IF(is_dec(str)) RETURN !--- CHECK FOR "D" OR "E" SEPARATOR ix=MAX(INDEX(strLow(str),'d'),INDEX(strLow(str),'e')); out=ix>0 IF(.NOT.out) RETURN !--- CHECK SURROUNDING STRINGS ARE NUMBERS out=is_dec(str(1:ix-1)).AND.is_int(str(ix+1:ls)) END FUNCTION is_num !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- INTEGER FUNCTION str2int(str) RESULT(out) !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: convert a string into an integer !------------------------------------------------------------------------------- CHARACTER(LEN=*), INTENT(IN) :: str INTEGER :: k !------------------------------------------------------------------------------- CALL err(.NOT.is_int(str),'Invalid integer "'//TRIM(str)//'"') out=0 DO k=1,LEN_TRIM(str); out=10*out+INT(INDEX('0123456789',str(k:k))-1); END DO END FUNCTION str2int !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- REAL FUNCTION str2real(str) RESULT(out) !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: Convert a string into an real !------------------------------------------------------------------------------- CHARACTER(LEN=*), INTENT(IN) :: str INTEGER :: ix, l !------------------------------------------------------------------------------- CALL err(.NOT.is_num(str),'Invalid number "'//TRIM(str)//'"') ix=MAX(INDEX(strLow(str),'d'),INDEX(strLow(str),'e')); l=LEN_TRIM(str) IF(ix==0) out=dec2real(str) IF(ix/=0) out=dec2real(str(1:ix-1))*10.**str2int(str(ix+1:l)) END FUNCTION str2real !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ELEMENTAL REAL FUNCTION dec2real(str) RESULT(out) !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: convert a valid (already checked) string into an real !------------------------------------------------------------------------------- CHARACTER(LEN=*), INTENT(IN) :: str INTEGER :: k, k0, ix !------------------------------------------------------------------------------- out=0. k0=1; IF(INDEX('+-',str(1:1))/=0) k0=2; ix=INDEX(str,'.') !--- CHECK SIGN DO k=k0,LEN_TRIM(str); IF(k==ix) CYCLE !--- SKIP .+- out=out*10.+REAL(INDEX('0123456789',str(k:k))-1) END DO IF(ix/=0) out=out*10.**(ix-LEN_TRIM(str)) !--- COMA IF(k0==2) out=-out !--- SIGN END FUNCTION dec2real !------------------------------------------------------------------------------- !------------------------------------------------------------------------------- ! ELEMENTAL CHARACTER(LEN=256) FUNCTION strLow(str) RESULT(out) ! !------------------------------------------------------------------------------- IMPLICIT NONE !------------------------------------------------------------------------------- ! Purpose: Lower case conversion. !------------------------------------------------------------------------------- ! Parameters: CHARACTER(LEN=*), INTENT(IN) :: str !------------------------------------------------------------------------------- ! Local variable: INTEGER :: k, ix !------------------------------------------------------------------------------- out=str DO k=1,LEN(str) ix=IACHAR(str(k:k)); IF(64