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Re: 20010321: dcreanal update
- Subject: Re: 20010321: dcreanal update
- Date: Wed, 21 Mar 2001 16:10:02 -0700
Bill,
We were involved in User Committee meetings the end of last week so
time was limited. The LDEO site seems to have extractions of the
reanalysis data sets that I originally created the conversion
program for. These subset files from their web interface do not contain
all the global attributes of the original "reanalysis" files- which
leads to the trouble of creating a generic conversion routine.
I have attatched an updated copy of dcreanal.c (for the
$NAWIPS/unidata/ldmbridge/dcreanal directory) which handles the
"Intrinsic" NetCDF files found on the LDEO page. These are the
CED grids.
The "diagnostic" files I found on the CDAS pages are not on a rectangular
grid- the files do not define projection (eg they only give lats and
lons of grid points), so dcreanal won't handle them.
Steve Chiswell
Unidata User Support
Forwarded: Wed, 21 Mar 2001 14:30:52 -0700
Forwarded: chiz@unidata
From address@hidden Mon Mar 19 12:01:35 2001
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Date: Mon, 19 Mar 2001 14:01:33 -0500 (EST)
From: Bill Ramstrom <address@hidden>
To: Unidata Support <address@hidden>
cc: Lodovica Illari <address@hidden>, address@hidden
Subject: Re: 20010315: 20010315: 20010314: From netCDF to gempak
In-Reply-To: <address@hidden>
Message-ID: <address@hidden>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Hi Steve,
I was just wondering if you had had a chance to work on this
update yet. Let me know when you have a chance.
Thanks,
Bill Ramstrom
On Thu, 15 Mar 2001, Unidata Support wrote:
>
> Bill,
>
> This data set seems to use a different convention than the reanalysis
> files I had access to which identified themselves as COARDS in the global
> attributes.
>
> Where dcreanal expects "lat" and "lon" and the variable names,
> your data has "X" and "Y". For time, dcreanal expects "time", and
> your file has "T". For "level", you file just has "P". And instead of
> "GRIB_id", your file has "GRIBgridcode".
>
> I can update the dcreanal code to handle this. What is the source of these
> files? Is it the new reanal2 files? The file looks almost identical except the
> dimension and variable ids, except there is no way to identify the vertival
> level as pressure unless you happen to be looking for "P".
>
> Steve Chiswell
> Unidata User Support
>
>
> >From: Bill Ramstrom <address@hidden>
> >Organization: UCAR/Unidata
> >Keywords: 200103152020.f2FKKnL03434
>
> >Here is the output from ncdump -h
> >
> >===============================================
> >
> >
> >netcdf z {
> >dimensions:
> > Y = 73 ;
> > X = 144 ;
> > T = 5 ;
> > P = 17 ;
> >variables:
> > float Y(Y) ;
> > Y:long_name = "Latitude" ;
> > Y:gridtype = 0 ;
> > Y:units = "degree_north" ;
> > float X(X) ;
> > X:long_name = "Longitude" ;
> > X:gridtype = 1 ;
> > X:units = "degree_east" ;
> > int T(T) ;
> > T:long_name = "Time" ;
> > T:calendar = "standard" ;
> > T:defaultvalue = 19427 ;
> > T:gridtype = 0 ;
> > T:units = "days since 1948-01-01" ;
> > int P(P) ;
> > P:long_name = "Pressure" ;
> > P:gridtype = 0 ;
> > P:units = "mb" ;
> > float phi(T, P, Y, X) ;
> > phi:scale_max = 32480.f ;
> > phi:calendar = "standard" ;
> > phi:units = "gpm" ;
> > phi:PTVersion = 2 ;
> > phi:PDS_TimeRange = 113 ;
> > phi:GRIBgridcode = 2 ;
> > phi:long_name = "Geopotential height" ;
> > phi:process = "62 wave triangular, 28 layer Spectral model
> >from \"Medium Range
> > Forecast\" run" ;
> > phi:center = "US Weather Service - National Met. Center" ;
> > phi:grib_name = "HGT" ;
> > phi:subcenter = "NCEP Reanalysis Project" ;
> > phi:scale_min = -594.f ;
> > phi:gribleveltype = 100 ;
> > phi:gribparam = 7 ;
> > phi:missing_value = 9.999e+20f ;
> > phi:Compression.compressiontype = "null" ;
> >}
> >
> >
> >
> >
> >
> >===============================================
> >
> >
> >On Thu, 15 Mar 2001, Unidata Support wrote:
> >
> >>
> >> Lodovica,
> >> could you send me the output from "ncdump -h" so that I ca see what
> >> the cdl looks like?
> >>
> >> dcreanal doesn't use udunits, so no trouble there. The program is set up
> >> according to the coards conventions that were used in the reanalysis
> >> files I had access to. The parameter variables were 3 or 4 dimensional.
> >>
> >> Steve Chiswell
> >> Unidata User Support
> >>
> >>
> >>
> >>
> >>
> >> >From: Lodovica Illari <address@hidden>
> >> >Organization: UCAR/Unidata
> >> >Keywords: 200103151842.f2FIglL27392
> >>
> >> >Hi Steve,
> >> >
> >> >I have installed dcreanal in my gempak distribution, but when we tried to
> >> >use it no gempak files were created.
> >> >
> >> >This is the output:
> >> >
> >> > dcreanal z.cdf zwind.gem
> >> > Changing center table to cntrgrib1.tbl
> >> > Changing vertical coord table to vcrdgrib1.tbl
> >> > Changing WMO parameter table to ncarncep1.tbl
> >> > Changing center parameter table to ncarncep1.tbl
> >> >---------------------------------------------------
> >> >We checked the netcdf file with ncdump and it is fine.
> >> >
> >> >What do you think is going wrong?
> >> >
> >> >By the way I have compiled dcreanal without the udunits lib, because
> >> >there were not available on our system. Could this create some problem?
> >> >
> >> >Thanks again
> >> >
> >> >Lodovica
> >> >.
> >> >
> >> >
> >> >On Wed, 14 Mar 2001, Unidata Support wrote:
> >> >
> >> >> >From: Lodovica Illari <address@hidden>
> >> >> >Organization: UCAR/Unidata
> >> >> >Keywords: 200103141850.f2EIoYL09674
> >> >>
> >> >> >Hi,
> >> >> >
> >> >> >I have some reanalysis data in netCDF format. I would like to make a
> >> >> >gempak file from that? We are running gempak5.4 and we don't have
> >> >> >dcreanal. Can you give us a patch?
> >> >> >
> >> >> >Thanks for your help
> >> >> >
> >> >> >Lodovica Illari
> >> >> >
> >> >>
> >> >>
> >> >> Lodovica,
> >> >>
> >> >> There is a source tarfile for 5.4 in the gbuddy ftp account:
> >> >> ftp to ftp.unidata.ucar.edu
> >> >> login: gbuddy
> >> >> password: 41gempak
> >> >>
> >> >> cd nawips-5.4/contrib
> >> >> get dcreanal.tar.Z
> >> >>
> >> >>
> >> >> The installation instructions are in the archives at:
> >> >> http://www.unidata.ucar.edu/projects/coohl/mhonarc/MailArchives/gempak/ms
> > g02
> >> > 840.html
> >> >>
> >> >> You will need to have NetCDF library installed on your system and make
> >> >> su
> > re
> >> > that
> >> >> the NETCDF and NETCDFINC definitions in Makeinc.common are set
> >> >> appropriat
> > ely
> >> > .
> >> >>
> >> >>
> >> >> The dcreanal program does not know how to deal with the reanalysis data
> >> >> on Gaussian grids.
> >> >>
> >> >> Since there can be many times in a NetCDF file, and you are limited to
> >> >> 1000 times in a grid file, I generally suggest monthly GEMPAK output
> >> >> since 365 days x 4 analysis per day exceeds 1000.
> >> >>
> >> >> Execution example:
> >> >> dcreanal slp.1948.nc YYYYMM_slp.gem
> >> >>
> >> >> The above reads from the NetCDF file slp.1948.nc and writes to monthly
> >> >> Gempak files using the YYYYMM template.
> >> >>
> >> >> Steve Chiswell
> >> >> *************************************************************************
> > ***
> >> > <
> >> >> Unidata User Support UCAR Unidata
> >> >> Prog
> > ram
> >> > <
> >> >> (303)497-8644 P.O. Box
> >> >> 3
> > 000
> >> > <
> >> >> address@hidden Boulder, CO 80
> > 307
> >> > <
> >> >> -------------------------------------------------------------------------
> > ---
> >> > <
> >> >> Unidata WWW Service http://www.unidata.ucar.edu/
> >> >>
> >
> >> > <
> >> >> *************************************************************************
> > ***
> >> > <
> >> >>
> >> >
> >>
> >> ****************************************************************************
> > <
> >> Unidata User Support UCAR Unidata
> >> Program
> > <
> >> (303)497-8644 P.O. Box
> >> 3000
> > <
> >> address@hidden Boulder, CO 80307
> > <
> >> ----------------------------------------------------------------------------
> > <
> >> Unidata WWW Service http://www.unidata.ucar.edu/
> >>
> > <
> >> ****************************************************************************
> > <
> >>
> >
>
> **************************************************************************** <
> Unidata User Support UCAR Unidata Program <
> (303)497-8644 P.O. Box 3000 <
> address@hidden Boulder, CO 80307 <
> ---------------------------------------------------------------------------- <
> Unidata WWW Service http://www.unidata.ucar.edu/ <
> **************************************************************************** <
>
From address@hidden Thu Mar 15 13:45:01 2001
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Date: Thu, 15 Mar 2001 15:45:00 -0500 (EST)
From: Bill Ramstrom <address@hidden>
To: Unidata Support <address@hidden>
cc: Lodovica Illari <address@hidden>, address@hidden
Subject: Re: 20010315: 20010315: 20010314: From netCDF to gempak
In-Reply-To: <address@hidden>
Message-ID: <address@hidden>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
I got the data from the Columbia web page:
http://ingrid.ldeo.columbia.edu/SOURCES/.NOAA/.NCEP-NCAR
I do not know if it is a reanal2 file... That would be great if you could
update the conversion program to handle this, we would appreciate it.
Thanks,
Bill
On Thu, 15 Mar 2001, Unidata Support wrote:
>
> Bill,
>
> This data set seems to use a different convention than the reanalysis
> files I had access to which identified themselves as COARDS in the global
> attributes.
>
> Where dcreanal expects "lat" and "lon" and the variable names,
> your data has "X" and "Y". For time, dcreanal expects "time", and
> your file has "T". For "level", you file just has "P". And instead of
> "GRIB_id", your file has "GRIBgridcode".
>
> I can update the dcreanal code to handle this. What is the source of these
> files? Is it the new reanal2 files? The file looks almost identical except the
> dimension and variable ids, except there is no way to identify the vertival
> level as pressure unless you happen to be looking for "P".
>
> Steve Chiswell
> Unidata User Support
>
>
> >From: Bill Ramstrom <address@hidden>
> >Organization: UCAR/Unidata
> >Keywords: 200103152020.f2FKKnL03434
>
> >Here is the output from ncdump -h
> >
> >===============================================
> >
> >
> >netcdf z {
> >dimensions:
> > Y = 73 ;
> > X = 144 ;
> > T = 5 ;
> > P = 17 ;
> >variables:
> > float Y(Y) ;
> > Y:long_name = "Latitude" ;
> > Y:gridtype = 0 ;
> > Y:units = "degree_north" ;
> > float X(X) ;
> > X:long_name = "Longitude" ;
> > X:gridtype = 1 ;
> > X:units = "degree_east" ;
> > int T(T) ;
> > T:long_name = "Time" ;
> > T:calendar = "standard" ;
> > T:defaultvalue = 19427 ;
> > T:gridtype = 0 ;
> > T:units = "days since 1948-01-01" ;
> > int P(P) ;
> > P:long_name = "Pressure" ;
> > P:gridtype = 0 ;
> > P:units = "mb" ;
> > float phi(T, P, Y, X) ;
> > phi:scale_max = 32480.f ;
> > phi:calendar = "standard" ;
> > phi:units = "gpm" ;
> > phi:PTVersion = 2 ;
> > phi:PDS_TimeRange = 113 ;
> > phi:GRIBgridcode = 2 ;
> > phi:long_name = "Geopotential height" ;
> > phi:process = "62 wave triangular, 28 layer Spectral model
> >from \"Medium Range
> > Forecast\" run" ;
> > phi:center = "US Weather Service - National Met. Center" ;
> > phi:grib_name = "HGT" ;
> > phi:subcenter = "NCEP Reanalysis Project" ;
> > phi:scale_min = -594.f ;
> > phi:gribleveltype = 100 ;
> > phi:gribparam = 7 ;
> > phi:missing_value = 9.999e+20f ;
> > phi:Compression.compressiontype = "null" ;
> >}
> >
> >
> >
> >
> >
> >===============================================
> >
> >
> >On Thu, 15 Mar 2001, Unidata Support wrote:
> >
> >>
> >> Lodovica,
> >> could you send me the output from "ncdump -h" so that I ca see what
> >> the cdl looks like?
> >>
> >> dcreanal doesn't use udunits, so no trouble there. The program is set up
> >> according to the coards conventions that were used in the reanalysis
> >> files I had access to. The parameter variables were 3 or 4 dimensional.
> >>
> >> Steve Chiswell
> >> Unidata User Support
> >>
> >>
> >>
> >>
> >>
> >> >From: Lodovica Illari <address@hidden>
> >> >Organization: UCAR/Unidata
> >> >Keywords: 200103151842.f2FIglL27392
> >>
> >> >Hi Steve,
> >> >
> >> >I have installed dcreanal in my gempak distribution, but when we tried to
> >> >use it no gempak files were created.
> >> >
> >> >This is the output:
> >> >
> >> > dcreanal z.cdf zwind.gem
> >> > Changing center table to cntrgrib1.tbl
> >> > Changing vertical coord table to vcrdgrib1.tbl
> >> > Changing WMO parameter table to ncarncep1.tbl
> >> > Changing center parameter table to ncarncep1.tbl
> >> >---------------------------------------------------
> >> >We checked the netcdf file with ncdump and it is fine.
> >> >
> >> >What do you think is going wrong?
> >> >
> >> >By the way I have compiled dcreanal without the udunits lib, because
> >> >there were not available on our system. Could this create some problem?
> >> >
> >> >Thanks again
> >> >
> >> >Lodovica
> >> >.
> >> >
> >> >
> >> >On Wed, 14 Mar 2001, Unidata Support wrote:
> >> >
> >> >> >From: Lodovica Illari <address@hidden>
> >> >> >Organization: UCAR/Unidata
> >> >> >Keywords: 200103141850.f2EIoYL09674
> >> >>
> >> >> >Hi,
> >> >> >
> >> >> >I have some reanalysis data in netCDF format. I would like to make a
> >> >> >gempak file from that? We are running gempak5.4 and we don't have
> >> >> >dcreanal. Can you give us a patch?
> >> >> >
> >> >> >Thanks for your help
> >> >> >
> >> >> >Lodovica Illari
> >> >> >
> >> >>
> >> >>
> >> >> Lodovica,
> >> >>
> >> >> There is a source tarfile for 5.4 in the gbuddy ftp account:
> >> >> ftp to ftp.unidata.ucar.edu
> >> >> login: gbuddy
> >> >> password: 41gempak
> >> >>
> >> >> cd nawips-5.4/contrib
> >> >> get dcreanal.tar.Z
> >> >>
> >> >>
> >> >> The installation instructions are in the archives at:
> >> >> http://www.unidata.ucar.edu/projects/coohl/mhonarc/MailArchives/gempak/ms
> > g02
> >> > 840.html
> >> >>
> >> >> You will need to have NetCDF library installed on your system and make
> >> >> su
> > re
> >> > that
> >> >> the NETCDF and NETCDFINC definitions in Makeinc.common are set
> >> >> appropriat
> > ely
> >> > .
> >> >>
> >> >>
> >> >> The dcreanal program does not know how to deal with the reanalysis data
> >> >> on Gaussian grids.
> >> >>
> >> >> Since there can be many times in a NetCDF file, and you are limited to
> >> >> 1000 times in a grid file, I generally suggest monthly GEMPAK output
> >> >> since 365 days x 4 analysis per day exceeds 1000.
> >> >>
> >> >> Execution example:
> >> >> dcreanal slp.1948.nc YYYYMM_slp.gem
> >> >>
> >> >> The above reads from the NetCDF file slp.1948.nc and writes to monthly
> >> >> Gempak files using the YYYYMM template.
> >> >>
> >> >> Steve Chiswell
> >> >> *************************************************************************
> > ***
> >> > <
> >> >> Unidata User Support UCAR Unidata
> >> >> Prog
> > ram
> >> > <
> >> >> (303)497-8644 P.O. Box
> >> >> 3
> > 000
> >> > <
> >> >> address@hidden Boulder, CO 80
> > 307
> >> > <
> >> >> -------------------------------------------------------------------------
> > ---
> >> > <
> >> >> Unidata WWW Service http://www.unidata.ucar.edu/
> >> >>
> >
> >> > <
> >> >> *************************************************************************
> > ***
> >> > <
> >> >>
> >> >
> >>
> >> ****************************************************************************
> > <
> >> Unidata User Support UCAR Unidata
> >> Program
> > <
> >> (303)497-8644 P.O. Box
> >> 3000
> > <
> >> address@hidden Boulder, CO 80307
> > <
> >> ----------------------------------------------------------------------------
> > <
> >> Unidata WWW Service http://www.unidata.ucar.edu/
> >>
> > <
> >> ****************************************************************************
> > <
> >>
> >
>
> **************************************************************************** <
> Unidata User Support UCAR Unidata Program <
> (303)497-8644 P.O. Box 3000 <
> address@hidden Boulder, CO 80307 <
> ---------------------------------------------------------------------------- <
> Unidata WWW Service http://www.unidata.ucar.edu/ <
> **************************************************************************** <
>
/***************************************************************
** Dcreanal **
** This program will convert a NCAR/NCEP reanalysis Netcdf **
** data set into a GEMPAK gridded data file. COARDS data **
** conventions are assumed. **
** **
** Steve Chiswell Unidata/UCAR July, 1998 **
***************************************************************/
#include <stdio.h>
#include <math.h>
#include <netcdf.h>
#include <ulog.h>
#include <geminc.h>
#include <gemprm.h>
#ifdef UNDERSCORE
#define in_bdta in_bdta_
#define gd_clos gd_clos_
#define fl_mnam fl_mnam_
#define open_gemgrid open_gemgrid_
#define put_gemgrid put_gemgrid_
#define na_init na_init_
#define na_rtbl na_rtbl_
#endif
unsigned long
gregdate_to_julday(year, month, day)
int year; /* Gregorian year */
int month; /* Gregorian month (1-12) */
int day; /* Gregorian day (1-31) */
{
long igreg = 15 + 31 * (10 + (12 * 1582));
int iy; /* signed, origin 0 year */
int ja; /* Julian century */
int jm; /* Julian month */
int jy; /* Julian year */
unsigned long julday; /* returned Julian day number */
/*
* Because there is no 0 BC or 0 AD, assume the user wants the start of
* the common era if they specify year 0.
*/
if (year == 0)
year = 1;
iy = year;
if (year < 0)
iy++;
if (month > 2)
{
jy = iy;
jm = month + 1;
}
else
{
jy = iy - 1;
jm = month + 13;
}
/*
* Note: SLIGHTLY STRANGE CONSTRUCTIONS REQUIRED TO AVOID PROBLEMS WITH
* OPTIMISATION OR GENERAL ERRORS UNDER VMS!
*/
julday = day + (int)(30.6001 * jm);
if (jy >= 0)
{
julday += 365 * jy;
julday += 0.25 * jy;
}
else
{
double xi = 365.25 * jy;
if ((int)xi != xi)
xi -= 1;
julday += (int)xi;
}
julday += 1720995;
if (day + (31* (month + (12 * iy))) >= igreg)
{
ja = jy/100;
julday -= ja;
julday += 2;
julday += ja/4;
}
return julday;
}
julday_to_gregdate(julday, year, month, day)
unsigned long julday; /* Julian day number to convert */
int *year; /* Gregorian year (out) */
int *month; /* Gregorian month (1-12) (out) */
int *day; /* Gregorian day (1-31) (out) */
{
long ja, jb;
int jc;
long jd;
int je, iday, imonth, iyear;
double xc;
if (julday < 2299161)
ja = julday;
else
{
int ia = ((julday - 1867216) - 0.25) / 36524.25;
ja = julday + 1 + ia - (int)(0.25 * ia);
}
jb = ja + 1524;
xc = ((jb - 2439870) - 122.1) / 365.25;
jc = 6680.0 + xc;
jd = 365 * jc + (int)(0.25 * jc);
je = (jb - jd) / 30.6001;
iday = jb - jd - (int)(30.6001 * je);
imonth = je - 1;
if (imonth > 12)
imonth -= 12;
iyear = jc - 4715;
if (imonth > 2)
iyear -= 1;
if (iyear <= 0)
iyear -= 1;
*year = iyear;
*month = imonth;
*day = iday;
}
void usage()
{
printf("Usage: dcreanal netcdffile gempakfile\n");
}
void do_reanal(cdfid,gemfilin,ier)
int cdfid,*ier;
char *gemfilin;
{
int ndims,nvars,natts,nunlim;
size_t dimsiz,var_i[3],latsize,lonsize,levsize,start_i[4],count_i[4];
int time_id,lat_dimid,lon_dimid,lev_dimid,lat_id,lon_id,pres_id=-1;
int i,iret=0,x,y;
double timeval;
unsigned long julian_day,start_day;
int gyear,gmonth,gday,ghour;
int vcord,lev1,lev2=-1,nbits=10;
float pres_arr[97000],lat,lon;
float lat1,lon1,lat2,lon2;
int iflno=-1,iflcount=0;
int maxgrid = 9800;
char *gemfil,*gemfil_old,dattim[20];
int attnum;
char varname[20],levname[256];
int lev_id,varndims,levcnt,vcid,ivar,gribid;
float scale,offset,missval,vlev;
int gribed, center, edition;
char wmotbl[80],ctbl[80],vtbl[80],ntbl[80];
/* initialize grib tables */
na_init (&iret);
center = 60; gribed = 1; edition = 2;
wmotbl[0] = ntbl[0] = vtbl[0] = ctbl[0] = '\0';
strcat(wmotbl,"ncarncep1.tbl"); strcat(ntbl,"ncarncep1.tbl");
strncat(vtbl,"?",1); strncat(ctbl,"?",1);
na_rtbl(&gribed,¢er,&edition,wmotbl,ntbl,vtbl,ctbl,
&iret,strlen(wmotbl),strlen(ntbl),strlen(vtbl),strlen(ctbl));
gemfil = (char *)malloc(strlen(gemfilin) + 1);
gemfil_old = (char *)malloc(strlen(gemfilin) + 1);
gemfil_old[0] = '\0';
iret = nc_inq(cdfid,&ndims,&nvars,&natts,&nunlim);
/*printf("ndims %d nvars %d natts %d nunlim %d\n",ndims,nvars,natts,nunlim);*/
/* see if vertical coordinate level exists */
iret = nc_inq_varid(cdfid,"level",&lev_id);
iret += nc_inq_dimid(cdfid,"level",&lev_dimid);
if(iret != 0) lev_id = -1;
/*printf("level id = %d\n",lev_id);*/
iret = nc_inq_dimlen(cdfid,nunlim,&dimsiz);
iret += nc_inq_varid(cdfid,"time",&time_id);
iret += nc_inq_dimid(cdfid,"lat",&lat_dimid);
iret += nc_inq_dimid(cdfid,"lon",&lon_dimid);
iret += nc_inq_dimlen(cdfid,lat_dimid,&latsize);
iret += nc_inq_dimlen(cdfid,lon_dimid,&lonsize);
if(lev_id != -1)
{
iret += nc_inq_dimlen(cdfid,lev_dimid,&levsize);
iret += nc_get_att_int(cdfid,lev_id,"GRIB_id",&vcid);
}
else
levsize = 1;
iret += nc_inq_varid(cdfid,"lat",&lat_id);
iret += nc_inq_varid(cdfid,"lon",&lon_id);
/*iret += nc_inq_varid(cdfid,"pres",&pres_id);*/
/*printf("number of records %d lats %d lons
%d\n",(int)dimsiz,(int)latsize,(int)lonsize);*/
ivar = 0;
while(ivar < nvars)
{
if(ivar == lev_id)
{
ivar++;
continue;
}
iret = nc_inq_attid(cdfid,ivar,"GRIB_name",&attnum);
if(iret == 0)
{
pres_id = ivar;
iret = nc_get_att_text(cdfid,pres_id,"GRIB_name",varname);
if(iret != 0)
{
printf("Could not get GRIB name\n");
continue;
}
gribid = -9999;
iret += nc_get_att_int(cdfid,pres_id,"GRIB_id",&gribid);
iret += nc_get_att_float(cdfid,pres_id,"scale_factor",&scale);
iret += nc_get_att_float(cdfid,pres_id,"add_offset",&offset);
iret += nc_get_att_float(cdfid,pres_id,"missing_value",&missval);
/*printf("%s %d scale %f offset %f missing
%f\n",varname,gribid,scale,offset,missval);*/
/*printf("processing %s\n",varname);*/
}
else
{
ivar++;
continue;
}
/* get grids and write to gempak file */
iret = nc_inq_varndims(cdfid,pres_id,&varndims);
gyear = 1; gmonth = 1; gday = 1;
start_day = gregdate_to_julday(gyear,gmonth,gday);
var_i[0] = 0;
iret = nc_get_var1_float(cdfid,lat_id,var_i,&lat1);
iret = nc_get_var1_float(cdfid,lon_id,var_i,&lon1);
var_i[0] = latsize - 1;
iret = nc_get_var1_float(cdfid,lat_id,var_i,&lat2);
var_i[0] = lonsize - 1;
iret = nc_get_var1_float(cdfid,lon_id,var_i,&lon2);
if((varndims < 3)||(varndims > 4))
{
printf("can't handle this many dimensions for a variable %d\n",
varndims);
ivar++;
continue;
}
for(i=0;i< (int)dimsiz;i++)
{
var_i[0] = i;
iret = nc_get_var1_double(cdfid,time_id,var_i,&timeval);
if(timeval < 1) continue;
julian_day = (unsigned long)floor(timeval / 24.0);
ghour = (int)(timeval - (julian_day * 24) );
julday_to_gregdate(julian_day+start_day, &gyear, &gmonth, &gday);
/*printf(" %d year/month/day %d/%d/%d hour
%d\n",i,gyear,gmonth,gday,ghour);*/
levcnt = 0;
while(levcnt < levsize)
{
if(varndims == 3)
{
lev1 = 0;
start_i[0] = i; start_i[1] = 0; start_i[2] = 0; start_i[3] = 0;
count_i[0] = 1; count_i[1] = latsize; count_i[2] = lonsize; count_i[3]
= 0;
iret = nc_get_att_text(cdfid,pres_id,"level_desc",levname);
if(iret != 0)
vcord = 0;
else
{
vcord = 0;
if(strstr(levname,"Entire Atmosphere") != 0) vcord = 200;
if(strstr(levname,"Surface") != 0)
{
vcord = 0;
iret = nc_get_att_text(cdfid,pres_id,"var_desc",levname);
if((iret == 0)&&(strstr(levname,"10-meter AGL") != 0))
{
lev1 = 10;
vcord = 105;
}
}
/*printf("level_desc name %d %s\n",vcord,levname);*/
}
}
if(varndims == 4)
{
var_i[0] = levcnt;
iret = nc_get_var1_float(cdfid,lev_id,var_i,&vlev);
/*printf("look levsize %d %d %f vcid %d\n",levcnt,levsize,vlev,vcid);*/
lev1 = (int)vlev;
start_i[0] = i; start_i[1] = levcnt; start_i[2] = 0; start_i[3] = 0;
count_i[0] = 1; count_i[1] = 1; count_i[2] = latsize; count_i[3] =
lonsize;
vcord = vcid;
}
iret = nc_get_vara_float(cdfid,pres_id,start_i,count_i,pres_arr);
for(x=0;x<latsize;x++)
for(y=0;y<lonsize;y++)
{
/*pres_arr[(x*lonsize)+y] =
((pres_arr[(x*lonsize)+y]*10)+367650)/100.0;*/
if(pres_arr[(x*lonsize)+y] != missval)
pres_arr[(x*lonsize)+y] = (pres_arr[(x*lonsize)+y]*scale)+offset;
else
pres_arr[(x*lonsize)+y] = -9999.0;
/*
var_i[0] = x;
iret = nc_get_var1_float(cdfid,lat_id,var_i,&lat);
var_i[0] = y;
iret = nc_get_var1_float(cdfid,lon_id,var_i,&lon);
printf("%d %d %d lat %f lon %f pres %f
\n",x,y,(x*lonsize)+y,lat,lon,
pres_arr[(x*lonsize)+y]); */
}
dattim[0] = '\0';
sprintf(dattim,"%02d%02d%02d/%02d00\0",gyear%100,gmonth,gday,ghour);
gemfil[0] = '\0'; strcpy(gemfil,gemfilin);
fl_mnam
(dattim,gemfilin,gemfil,&iret,strlen(dattim),strlen(gemfilin),strlen(gemfil));
if((iflno > -1) && (strcmp(gemfil,gemfil_old) != 0))
{
gd_clos (&iflno, &iret);
iflno = -1;
}
if(iflno < 0)
{
printf("opening %s %s\n",gemfil,dattim);
open_gemgrid(gemfil,&latsize,&lonsize,&lat1,&lon1,&lat2,&lon2,&maxgrid,&iflno,strlen(gemfil));
}
put_gemgrid(&iflno,varname,&gribid,&vcord,&lev1,&lev2,&gyear,&gmonth,&gday,&ghour,
&latsize,&lonsize,pres_arr,&nbits,&lat1,&lon1,&lat2,&lon2,strlen(varname));
strcpy(gemfil_old,gemfil);
levcnt++;
if(varndims == 3) levcnt = levsize;
} /* while levcnt < levsize */
}
if(iflno != -1)
{
gd_clos (&iflno, &iret);
iflno = -1;
}
ivar++;
}
}
main(argc,argv)
int argc;
char *argv[];
{
int cdfid,ier;
if(argc != 3)
{
usage();
exit(-1);
}
ier = nc_open(argv[1],0,&cdfid);
if(ier != 0)
{
uerror("Could not open %s\0",argv[1]);
usage();
exit(-1);
}
in_bdta (&ier);
do_reanal(cdfid,argv[2],&ier);
ier = nc_close(cdfid);
}
