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heimbach |
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C $Header: /u/gcmpack/MITgcm/pkg/ecco/cost_readscatxfields.F,v 1.4 2007/10/09 00:02:50 jmc Exp $ |
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jmc |
1.4 |
C $Name: $ |
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heimbach |
1.1 |
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#include "COST_CPPOPTIONS.h" |
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subroutine cost_ReadscatxFields( |
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I irec, |
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I mythid |
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& ) |
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c ================================================================== |
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c SUBROUTINE cost_ReadscatxFields |
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c ================================================================== |
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c |
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c o Read a given record of the SST data. |
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c |
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c started: Christian Eckert eckert@mit.edu 25-May-1999 |
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c |
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c changed: Christian Eckert eckert@mit.edu 25-Feb-2000 |
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c |
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c - Restructured the code in order to create a package |
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c for the MITgcmUV. |
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c |
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c ================================================================== |
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c SUBROUTINE cost_ReadscatxFields |
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c ================================================================== |
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implicit none |
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c == global variables == |
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#include "EEPARAMS.h" |
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#include "SIZE.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "cal.h" |
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#include "ecco_cost.h" |
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c == routine arguments == |
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integer irec |
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jmc |
1.4 |
integer mythid |
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heimbach |
1.1 |
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c == local variables == |
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integer bi,bj |
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integer i,j,k |
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integer itlo,ithi |
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integer jtlo,jthi |
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integer jmin,jmax |
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integer imin,imax |
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integer nobs |
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integer scatxrec |
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integer beginscatx |
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integer beginrun |
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_RL spval |
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_RL vartile |
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heimbach |
1.2 |
cnew( |
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integer il |
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integer mody, modm |
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integer iyear, imonth |
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character*(80) fnametmp |
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logical exst |
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cnew) |
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c == external functions == |
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1.4 |
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heimbach |
1.2 |
integer ilnblnk |
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external ilnblnk |
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heimbach |
1.1 |
c == end of interface == |
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1.4 |
parameter (spval = -1.8 ) |
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heimbach |
1.1 |
ce --> there is certainly a better place for this. |
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jtlo = mybylo(mythid) |
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jthi = mybyhi(mythid) |
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itlo = mybxlo(mythid) |
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ithi = mybxhi(mythid) |
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jmin = 1 |
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jmax = sny |
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imin = 1 |
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imax = snx |
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heimbach |
1.2 |
c beginscatx = scatxstartdate(1)/10000 |
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c beginrun = modelstartdate(1)/10000 |
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c if ( beginscatx .eq. beginrun ) then |
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c scatxrec = mod(modelstartdate(1)/100,100) - |
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c & mod(scatxstartdate(1)/100,100) + irec |
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c else |
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c scatxrec = ( beginrun - beginscatx - 1)*nmonthyear + |
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c & (nmonthyear - mod(scatxstartdate(1)/100,100) + |
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c & 1) + mod(modelstartdate(1)/100,100) - 1 + irec |
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c endif |
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cnew( |
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mody = modelstartdate(1)/10000 |
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modm = modelstartdate(1)/100 - mody*100 |
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iyear = mody + INT((modm-1+irec-1)/12) |
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imonth = 1 + MOD(modm-1+irec-1,12) |
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il=ilnblnk(scatxdatfile) |
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write(fnametmp(1:80),'(2a,i4)') |
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& scatxdatfile(1:il), '_', iyear |
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inquire( file=fnametmp, exist=exst ) |
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if (.NOT. exst) then |
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write(fnametmp(1:80),'(a)') scatxdatfile(1:il) |
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imonth = irec |
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heimbach |
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endif |
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heimbach |
1.2 |
call mdsreadfield( fnametmp, cost_iprec, cost_yftype, 1, |
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& scatxdat, imonth, mythid ) |
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cnew) |
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heimbach |
1.1 |
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nobs = 0 |
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heimbach |
1.2 |
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heimbach |
1.1 |
do bj = jtlo,jthi |
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do bi = itlo,ithi |
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k = 1 |
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do j = jmin,jmax |
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do i = imin,imax |
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heimbach |
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if (maskW(i,j,k,bi,bj) .eq. 0.) then |
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heimbach |
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scatxmask(i,j,bi,bj) = 0. _d 0 |
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else |
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scatxmask(i,j,bi,bj) = 1. _d 0 |
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endif |
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if (scatxdat(i,j,bi,bj) .lt. spval) then |
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scatxmask(i,j,bi,bj) = 0. _d 0 |
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endif |
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if (scatxdat(i,j,bi,bj) .eq. 0. _d 0 ) then |
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scatxmask(i,j,bi,bj) = 0. _d 0 |
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endif |
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scatxmask(i,j,bi,bj) = scatxmask(i,j,bi,bj)*frame(i,j) |
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scatxdat(i,j,bi,bj) = scatxdat(i,j,bi,bj)* |
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& scatxmask(i,j,bi,bj) |
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nobs = nobs + int(scatxmask(i,j,bi,bj)) |
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enddo |
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enddo |
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enddo |
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enddo |
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c-- Calculate the field variance for present subdomain. |
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c-- One could of course do a global sum here. |
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vartile = 0. _d 0 |
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do bj = jtlo,jthi |
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do bi = itlo,ithi |
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do j = jmin,jmax |
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do i = imin,imax |
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vartile=vartile+scatxdat(i,j,bi,bj)*scatxdat(i,j,bi,bj) |
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enddo |
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enddo |
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enddo |
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enddo |
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if (nobs .gt. 0) then |
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vartile = vartile/float(nobs) |
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else |
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vartile = spval |
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endif |
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return |
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end |
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