[gradsusr] Error opening NetCDF file
Jeff Duda
jeffduda319 at gmail.com
Thu May 17 20:08:12 EDT 2012
Do you need to include the "1" for the number of vertical levels if the
dimension size is just 1?
On Thu, May 17, 2012 at 6:02 PM, diego <diego333medina at yahoo.es> wrote:
> 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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>
>
--
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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