[gradsusr] Error opening NetCDF file

diego diego333medina at yahoo.es
Thu May 17 19:02:48 EDT 2012


Hi all:


I have taken a netcdf data file from the following link:
ftp://ftp.ncdc.noaa.gov/pub/data/cmb/ersst/v3b/netcdf/
While I try to open this file in GrADS I got the following error message:

ga-> open ersst.ctl
Scanning description file:  ersst
Data file ersst.198901.nc is open as file 1
LON set to 0 360 
LAT set to -88 88 
LEV set to 0 0 
Time values set: 1989:1:1:0 1989:1:1:0 
E set to 1 1 
ga-> q file
File 1 : 
  Descriptor: ersst.ctl
  Binary: ersst.198901.nc
  Type = Gridded
  Xsize = 180  Ysize = 89  Zsize = 1  Tsize = 1  Esize = 1
  Number of Variables = 3
     tsm  0  1,y,x  temperature
     an  0  1,y,x  anomalia
     er  0  1,y,x  error
ga-> d tsm
gancgrid error: nc_get_vara_double failed; NetCDF: Index exceeds dimension bound
Data Request Error:  Error for variable 'tsm'
  Error ocurred at column 1
DISPLAY error:  Invalid expression 
  Expression = tsm
ga-> quit

can anywhere help me ?

Thanks


My ctl file is :

DSET ^ersst.198901.nc
*DSET ^ersst.%y4%m2.nc
*OPTIONS template
DTYPE netcdf
UNDEF -999s
xdef   180 linear    0  2
ydef    89 linear  -88  2
zdef   1 levels 0
TDEF 1 linear jan1989 1mo     
vars 3
sst=>tsm  0 1,y,x   temperature
anom=>an  0 1,y,x   anomalia 
err=>er   0 1,y,x   error
endvars 


The Netcdf file Is:

 ncdump   ersst.199908.nc 

netcdf ersst.199908 {
dimensions:
    time = 1 ;
    zlev = 1 ;
    lat = 89 ;
    lon = 180 ;
variables:
    float time(time) ;
        time:long_name = "Center time of the day" ;
        time:units = "days since 1854-01-15" ;
        time:delta_t = "0000-01-00" ;
        time:avg_period = "0000-01-00" ;
    float zlev(zlev) ;
        zlev:long_name = "Sea surface height" ;
        zlev:units = "meters" ;
        zlev:actual_range = "0, 0" ;
    float lat(lat) ;
        lat:long_name = "Latitude" ;
        lat:units = "degrees_north" ;
        lat:grids = "Uniform grid from -88 to 88 by 2" ;
    float lon(lon) ;
        lon:long_name = "Longitude" ;
        lon:units = "degrees_east" ;
        lon:grids = "Uniform grid from 0 to 358 by 2" ;
    short sst(time, zlev, lat, lon) ;
        sst:long_name = "Extended reconstructed sea surface temperature" ;
        sst:units = "degrees_C" ;
        sst:_FillValue = -999s ;
        sst:add_offset = 0.f ;
        sst:scale_factor = 0.01f ;
        sst:valid_min = -300s ;
        sst:valid_max = 4500s ;
    short anom(time, zlev, lat, lon) ;
    anom:long_name = "Extended reconstructed SST anomalies" ;
        anom:units = "degrees_C" ;
        anom:_FillValue = -999s ;
        anom:add_offset = 0.f ;
        anom:scale_factor = 0.01f ;
        anom:valid_min = -1200s ;
        anom:valid_max = 1200s ;
    short err(time, zlev, lat, lon) ;
        err:long_name = "Estimated error standard deviation of analyzed_ersst" ;
        err:units = "degrees_C" ;
        err:_FillValue = -999s ;
        err:add_offset = 0.f ;
        err:scale_factor = 0.01f ;
        err:valid_min = 0s ;
        err:valid_max = 1000s ;

// global attributes:
        :title = "ERSST V3b in situ only" ;
        :history = "Version 3b" ;
        :creation_date = "2010-03-23" ;
        :description = "Smith, T.M., and R.W. Reynolds, 2003: Extended Reconstruction of Global Se
a Surface Temperatures Based on COADS Data (1854-1997). Journal of Climate, 16, 1495-1510. A vailable at h
ttp://www.ncdc.noaa.gov/img/climate/research/sst/ersst.pdf  Climatology is based on 1971-2000 OI.v2 SST, I
n situ data: ICOADS2.4 before 2006 and NCEP in situ data from 2007 to present" ;
        :source = "NOAA/National Climatic Data Center" ;
        :contact = "Dick Reynolds, email: Richard.W.Reynolds at noaa.gov & Chunying Liu, email: Chuny
ing.liu at noaa.gov" ;
        :Conventions = "CF-1.0" ;
data:

 time = 53172 ;

zlev = 0 ;

 lat = -88, -86, -84, -82, -80, -78, -76, -74, -72, -70, -68, -66, -64, -62, 
    -60, -58, -56, -54, -52, -50, -48, -46, -44, -42, -40, -38, -36, -34, 
    -32, -30, -28, -26, -24, -22, -20, -18, -16, -14, -12, -10, -8, -6, -4, 
    -2, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 
    36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 
    72, 74, 76, 78, 80, 82, 84, 86, 88 ;

 lon = 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 
    38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 
    74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 
    108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 
    136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 
    164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 190, 
    192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 
    220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 
    248, 250, 252, 254, 256, 258, 260, 262, 264, 266, 268, 270, 272, 274, 
    276, 278, 280, 282, 284, 286, 288, 290, 292, 294, 296, 298, 300, 302, 
    304, 306, 308, 310, 312, 314, 316, 318, 320, 322, 324, 326, 328, 330, 
    332, 334, 336, 338, 340, 342, 344, 346, 348, 350, 352, 354, 356, 358 ;

 sst =
  _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, 
    _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, 
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