| 1 |
dimitri |
1.19 |
C $Header: /u/gcmpack/MITgcm/pkg/exf/exf_set_uv.F,v 1.18 2008/01/28 06:17:01 dimitri Exp $ |
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dimitri |
1.1 |
C $Name: $ |
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#include "EXF_OPTIONS.h" |
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subroutine exf_set_uv( |
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& uvecfile, uvecstartdate, uvecperiod, |
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& exf_inscal_uvec, uvec, uvec0, uvec1, uvecmask, |
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& uvec_lon0, uvec_lon_inc, uvec_lat0, uvec_lat_inc, |
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heimbach |
1.10 |
& uvec_nlon, uvec_nlat, |
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& uvec_remove_intercept, uvec_remove_slope, |
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dimitri |
1.1 |
& vvecfile, vvecstartdate, vvecperiod, |
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& exf_inscal_vvec, vvec, vvec0, vvec1, vvecmask, |
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& vvec_lon0, vvec_lon_inc, vvec_lat0, vvec_lat_inc, |
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dimitri |
1.3 |
& vvec_nlon, vvec_nlat, |
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heimbach |
1.10 |
& vvec_remove_intercept, vvec_remove_slope, |
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dimitri |
1.1 |
& mycurrenttime, mycurrentiter, mythid ) |
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c ================================================================== |
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c SUBROUTINE exf_set_uv |
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c ================================================================== |
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c |
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c o Read-in, interpolate, and rotate wind or wind stress vectors |
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c from a spherical-polar input grid to an arbitrary output grid. |
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c |
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c menemenlis@jpl.nasa.gov, 8-Dec-2003 |
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c |
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c ================================================================== |
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c SUBROUTINE exf_set_uv |
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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 "DYNVARS.h" |
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#include "GRID.h" |
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jmc |
1.15 |
#include "EXF_PARAM.h" |
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#include "EXF_FIELDS.h" |
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#include "EXF_CONSTANTS.h" |
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dimitri |
1.1 |
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#ifdef ALLOW_AUTODIFF |
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# include "ctrl.h" |
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# include "ctrl_dummy.h" |
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#endif |
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c == routine arguments == |
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c *vec_lon_0, :: longitude and latitude of SouthWest |
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c *vec_lat_0 corner of global input grid for *vec |
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c *vec_nlon, *vec_nlat :: input x-grid and y-grid size for *vec |
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c *vec_lon_inc :: scalar x-grid increment for *vec |
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c *vec_lat_inc :: vector y-grid increments for *vec |
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heimbach |
1.5 |
character*(128) uvecfile, uvecfile0, uvecfile1 |
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dimitri |
1.1 |
_RL uvecstartdate, uvecperiod |
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_RL exf_inscal_uvec |
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heimbach |
1.10 |
_RL uvec_remove_intercept, uvec_remove_slope |
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dimitri |
1.1 |
_RL uvec (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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_RL uvec0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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_RL uvec1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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character*1 uvecmask |
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_RL uvec_lon0, uvec_lon_inc |
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_RL uvec_lat0, uvec_lat_inc(MAX_LAT_INC) |
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INTEGER uvec_nlon, uvec_nlat |
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heimbach |
1.5 |
character*(128) vvecfile, vvecfile0, vvecfile1 |
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dimitri |
1.1 |
_RL vvecstartdate, vvecperiod |
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_RL exf_inscal_vvec |
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heimbach |
1.10 |
_RL vvec_remove_intercept, vvec_remove_slope |
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dimitri |
1.1 |
_RL vvec (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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_RL vvec0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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_RL vvec1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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character*1 vvecmask |
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_RL vvec_lon0, vvec_lon_inc |
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_RL vvec_lat0, vvec_lat_inc(MAX_LAT_INC) |
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INTEGER vvec_nlon, vvec_nlat |
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_RL mycurrenttime |
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integer mycurrentiter |
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integer mythid |
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heimbach |
1.4 |
#ifdef USE_EXF_INTERPOLATION |
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dimitri |
1.1 |
c == local variables == |
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logical first, changed |
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_RL fac, x1, x2, x3, x4, y1, y2, y3, y4, dx, dy |
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_RL tmp_u (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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_RL tmp_v (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy) |
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dimitri |
1.16 |
integer count0, count1 |
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dimitri |
1.1 |
integer i, j, bi, bj |
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heimbach |
1.5 |
integer il, interp_method |
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integer year0, year1 |
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c == external == |
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integer ilnblnk |
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external ilnblnk |
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dimitri |
1.1 |
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c == end of interface == |
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dimitri |
1.11 |
IF ( usingCurvilinearGrid ) THEN |
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dimitri |
1.1 |
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heimbach |
1.13 |
if ( uvecfile .NE. ' ' .and. vvecfile .NE. ' ' ) then |
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dimitri |
1.1 |
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c get record numbers and interpolation factor |
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heimbach |
1.13 |
call exf_GetFFieldRec( |
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I uvecstartdate, uvecperiod |
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I , useExfYearlyFields |
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O , fac, first, changed |
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O , count0, count1, year0, year1 |
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I , mycurrenttime, mycurrentiter, mythid |
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& ) |
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dimitri |
1.1 |
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heimbach |
1.13 |
if ( first ) then |
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mlosch |
1.17 |
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call exf_GetYearlyFieldName( |
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I useExfYearlyFields, twoDigitYear, uvecperiod, year0, |
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I uvecfile, |
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O uvecfile0, |
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dimitri |
1.18 |
I mycurrenttime, mycurrentiter, mythid ) |
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mlosch |
1.17 |
call exf_GetYearlyFieldName( |
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I useExfYearlyFields, twoDigitYear, vvecperiod, year0, |
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I vvecfile, |
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O vvecfile0, |
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dimitri |
1.18 |
I mycurrenttime, mycurrentiter, mythid ) |
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mlosch |
1.17 |
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dimitri |
1.1 |
c scalar interpolation to (xC,yC) locations |
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dimitri |
1.14 |
interp_method=12 |
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heimbach |
1.13 |
call exf_interp( uvecfile0, exf_iprec |
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& , tmp_u, count0, xC, yC |
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& , uvec_lon0,uvec_lon_inc |
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& , uvec_lat0,uvec_lat_inc |
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& , uvec_nlon,uvec_nlat,interp_method,mythid |
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& ) |
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dimitri |
1.14 |
interp_method=22 |
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heimbach |
1.13 |
call exf_interp( vvecfile0, exf_iprec |
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& , tmp_v, count0, xC, yC |
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& , vvec_lon0,vvec_lon_inc |
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& , vvec_lat0,vvec_lat_inc |
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& , vvec_nlon,vvec_nlat,interp_method,mythid |
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& ) |
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dimitri |
1.1 |
c vector rotation |
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heimbach |
1.13 |
do bj = mybylo(mythid),mybyhi(mythid) |
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do bi = mybxlo(mythid),mybxhi(mythid) |
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do j = 1,sny |
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do i = 1,snx |
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dimitri |
1.16 |
x1=xG(i,j,bi,bj) |
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x2=xG(i+1,j,bi,bj) |
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x3=xG(i,j+1,bi,bj) |
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x4=xG(i+1,j+1,bi,bj) |
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heimbach |
1.13 |
if ((x2-x1).gt.180) x2=x2-360 |
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if ((x1-x2).gt.180) x2=x2+360 |
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if ((x3-x1).gt.180) x3=x3-360 |
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if ((x1-x3).gt.180) x3=x3+360 |
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if ((x4-x1).gt.180) x4=x4-360 |
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if ((x1-x4).gt.180) x4=x4+360 |
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dimitri |
1.16 |
y1=yG(i,j,bi,bj) |
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y2=yG(i+1,j,bi,bj) |
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y3=yG(i,j+1,bi,bj) |
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y4=yG(i+1,j+1,bi,bj) |
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heimbach |
1.13 |
dx=0.5*(x3+x4-x1-x2) |
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dx=dx* |
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dimitri |
1.16 |
& cos(deg2rad*yC(i,j,bi,bj)) |
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heimbach |
1.13 |
dy=0.5*(y3+y4-y1-y2) |
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vvec1(i,j,bi,bj)= |
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dimitri |
1.16 |
& (tmp_u(i,j,bi,bj)*dx+ |
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& tmp_v(i,j,bi,bj)*dy)/ |
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heimbach |
1.13 |
& sqrt(dx*dx+dy*dy) |
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dx=0.5*(x2+x4-x1-x3) |
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dx=dx* |
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dimitri |
1.16 |
& cos(deg2rad*yC(i,j,bi,bj)) |
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heimbach |
1.13 |
dy=0.5*(y2+y4-y1-y3) |
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uvec1(i,j,bi,bj)= |
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dimitri |
1.16 |
& (tmp_u(i,j,bi,bj)*dx+ |
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& tmp_v(i,j,bi,bj)*dy)/ |
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heimbach |
1.13 |
& sqrt(dx*dx+dy*dy) |
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dimitri |
1.1 |
enddo |
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heimbach |
1.13 |
enddo |
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enddo |
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enddo |
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dimitri |
1.1 |
c apply mask |
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heimbach |
1.13 |
if (exf_yftype .eq. 'RL') then |
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call exf_filter_rl( uvec1, uvecmask, mythid ) |
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call exf_filter_rl( vvec1, vvecmask, mythid ) |
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else |
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call exf_filter_rs( uvec1, uvecmask, mythid ) |
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call exf_filter_rs( vvec1, vvecmask, mythid ) |
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end if |
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endif |
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| 194 |
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if (( first ) .or. ( changed )) then |
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call exf_SwapFFields( uvec0, uvec1, mythid ) |
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call exf_SwapFFields( vvec0, vvec1, mythid ) |
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mlosch |
1.17 |
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call exf_GetYearlyFieldName( |
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I useExfYearlyFields, twoDigitYear, uvecperiod, year1, |
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I uvecfile, |
| 201 |
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O uvecfile1, |
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dimitri |
1.18 |
I mycurrenttime, mycurrentiter, mythid ) |
| 203 |
mlosch |
1.17 |
call exf_GetYearlyFieldName( |
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I useExfYearlyFields, twoDigitYear, vvecperiod, year1, |
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I vvecfile, |
| 206 |
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O vvecfile1, |
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dimitri |
1.18 |
I mycurrenttime, mycurrentiter, mythid ) |
| 208 |
mlosch |
1.17 |
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| 209 |
dimitri |
1.1 |
c scalar interpolation to (xC,yC) locations |
| 210 |
dimitri |
1.14 |
interp_method=12 |
| 211 |
heimbach |
1.13 |
call exf_interp( uvecfile1, exf_iprec |
| 212 |
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& , tmp_u, count1, xC, yC |
| 213 |
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& , uvec_lon0,uvec_lon_inc |
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& , uvec_lat0,uvec_lat_inc |
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& , uvec_nlon,uvec_nlat,interp_method,mythid |
| 216 |
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& ) |
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dimitri |
1.14 |
interp_method=22 |
| 218 |
heimbach |
1.13 |
call exf_interp( vvecfile1, exf_iprec |
| 219 |
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& , tmp_v, count1, xC, yC |
| 220 |
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& , vvec_lon0,vvec_lon_inc |
| 221 |
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& , vvec_lat0,vvec_lat_inc |
| 222 |
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& , vvec_nlon,vvec_nlat,interp_method,mythid |
| 223 |
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& ) |
| 224 |
dimitri |
1.1 |
c vector rotation |
| 225 |
heimbach |
1.13 |
do bj = mybylo(mythid),mybyhi(mythid) |
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do bi = mybxlo(mythid),mybxhi(mythid) |
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do j = 1,sny |
| 228 |
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do i = 1,snx |
| 229 |
dimitri |
1.16 |
x1=xG(i,j,bi,bj) |
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x2=xG(i+1,j,bi,bj) |
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x3=xG(i,j+1,bi,bj) |
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x4=xG(i+1,j+1,bi,bj) |
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heimbach |
1.13 |
if ((x2-x1).gt.180) x2=x2-360 |
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if ((x1-x2).gt.180) x2=x2+360 |
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if ((x3-x1).gt.180) x3=x3-360 |
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if ((x1-x3).gt.180) x3=x3+360 |
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if ((x4-x1).gt.180) x4=x4-360 |
| 238 |
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if ((x1-x4).gt.180) x4=x4+360 |
| 239 |
dimitri |
1.16 |
y1=yG(i,j,bi,bj) |
| 240 |
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y2=yG(i+1,j,bi,bj) |
| 241 |
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y3=yG(i,j+1,bi,bj) |
| 242 |
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y4=yG(i+1,j+1,bi,bj) |
| 243 |
heimbach |
1.13 |
dx=0.5*(x3+x4-x1-x2) |
| 244 |
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dx=dx* |
| 245 |
dimitri |
1.16 |
& cos(deg2rad*yC(i,j,bi,bj)) |
| 246 |
heimbach |
1.13 |
dy=0.5*(y3+y4-y1-y2) |
| 247 |
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vvec1(i,j,bi,bj)= |
| 248 |
dimitri |
1.16 |
& (tmp_u(i,j,bi,bj)*dx+ |
| 249 |
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& tmp_v(i,j,bi,bj)*dy)/ |
| 250 |
heimbach |
1.13 |
& sqrt(dx*dx+dy*dy) |
| 251 |
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dx=0.5*(x2+x4-x1-x3) |
| 252 |
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dx=dx* |
| 253 |
dimitri |
1.16 |
& cos(deg2rad*yC(i,j,bi,bj)) |
| 254 |
heimbach |
1.13 |
dy=0.5*(y2+y4-y1-y3) |
| 255 |
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uvec1(i,j,bi,bj)= |
| 256 |
dimitri |
1.16 |
& (tmp_u(i,j,bi,bj)*dx+ |
| 257 |
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& tmp_v(i,j,bi,bj)*dy)/ |
| 258 |
heimbach |
1.13 |
& sqrt(dx*dx+dy*dy) |
| 259 |
dimitri |
1.1 |
enddo |
| 260 |
heimbach |
1.13 |
enddo |
| 261 |
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enddo |
| 262 |
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enddo |
| 263 |
dimitri |
1.1 |
c apply mask |
| 264 |
heimbach |
1.13 |
if (exf_yftype .eq. 'RL') then |
| 265 |
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call exf_filter_rl( uvec1, uvecmask, mythid ) |
| 266 |
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call exf_filter_rl( vvec1, vvecmask, mythid ) |
| 267 |
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else |
| 268 |
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call exf_filter_rs( uvec1, uvecmask, mythid ) |
| 269 |
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call exf_filter_rs( vvec1, vvecmask, mythid ) |
| 270 |
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end if |
| 271 |
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endif |
| 272 |
dimitri |
1.1 |
|
| 273 |
|
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c Interpolate linearly onto the current time. |
| 274 |
heimbach |
1.13 |
do bj = mybylo(mythid),mybyhi(mythid) |
| 275 |
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do bi = mybxlo(mythid),mybxhi(mythid) |
| 276 |
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do j = 1,sny |
| 277 |
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do i = 1,snx |
| 278 |
|
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uvec(i,j,bi,bj) = exf_inscal_uvec * ( |
| 279 |
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& fac * uvec0(i,j,bi,bj) + |
| 280 |
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& (exf_one - fac) * uvec1(i,j,bi,bj) ) |
| 281 |
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vvec(i,j,bi,bj) = exf_inscal_vvec * ( |
| 282 |
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& fac * vvec0(i,j,bi,bj) + |
| 283 |
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& (exf_one - fac) * vvec1(i,j,bi,bj) ) |
| 284 |
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enddo |
| 285 |
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enddo |
| 286 |
dimitri |
1.1 |
enddo |
| 287 |
heimbach |
1.13 |
enddo |
| 288 |
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| 289 |
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endif |
| 290 |
dimitri |
1.1 |
|
| 291 |
|
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ELSE |
| 292 |
dimitri |
1.16 |
c IF ( .NOT. usingCurvilinearGrid ) |
| 293 |
dimitri |
1.1 |
|
| 294 |
dimitri |
1.14 |
interp_method=12 |
| 295 |
heimbach |
1.13 |
call exf_set_gen( |
| 296 |
|
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& uvecfile, uvecstartdate, uvecperiod, |
| 297 |
|
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& exf_inscal_uvec, |
| 298 |
|
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& uvec_remove_intercept, uvec_remove_slope, |
| 299 |
|
|
& uvec, uvec0, uvec1, uvecmask, |
| 300 |
|
|
& uvec_lon0, uvec_lon_inc, uvec_lat0, uvec_lat_inc, |
| 301 |
|
|
& uvec_nlon, uvec_nlat, xC, yC, interp_method, |
| 302 |
|
|
& mycurrenttime, mycurrentiter, mythid ) |
| 303 |
dimitri |
1.14 |
interp_method=22 |
| 304 |
heimbach |
1.13 |
call exf_set_gen( |
| 305 |
|
|
& vvecfile, vvecstartdate, vvecperiod, |
| 306 |
|
|
& exf_inscal_vvec, |
| 307 |
|
|
& vvec_remove_intercept, vvec_remove_slope, |
| 308 |
|
|
& vvec, vvec0, vvec1, vvecmask, |
| 309 |
|
|
& vvec_lon0, vvec_lon_inc, vvec_lat0, vvec_lat_inc, |
| 310 |
|
|
& vvec_nlon, vvec_nlat, xC, yC, interp_method, |
| 311 |
|
|
& mycurrenttime, mycurrentiter, mythid ) |
| 312 |
|
|
|
| 313 |
dimitri |
1.1 |
ENDIF |
| 314 |
|
|
|
| 315 |
heimbach |
1.4 |
#endif /* USE_EXF_INTERPOLATION */ |
| 316 |
|
|
|
| 317 |
dimitri |
1.1 |
return |
| 318 |
|
|
end |
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