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Just use "sdfopen ersst.198901.nc" iinstead of "open ersst.ctl",
then "d sst".<br>
The name of the variable in the netcdf file is sst, not tsm defined
in the ctl file.<br>
<br>
Good luck,<br>
Hui<br>
<br>
On 5/17/2012 7:02 PM, diego wrote:
<blockquote
cite="mid:1337295768.71991.YahooMailNeo@web132403.mail.ird.yahoo.com"
type="cite">
<div style="color: rgb(0, 0, 0); background-color: rgb(255, 255,
255); font-family: times new roman,new york,times,serif;
font-size: 12pt;">
<div>Hi all:<br>
</div>
<div><br>
</div>
<div>I have taken a netcdf data file from the following link:<br>
</div>
<a class="moz-txt-link-freetext" href="ftp://ftp.ncdc.noaa.gov/pub/data/cmb/ersst/v3b/netcdf/">ftp://ftp.ncdc.noaa.gov/pub/data/cmb/ersst/v3b/netcdf/</a><br>
While I try to open this file in GrADS I got the following error
message:<br>
<br>
ga-> open ersst.ctl<br>
Scanning description file: ersst<br>
Data file ersst.198901.nc is open as file 1<br>
LON set to 0 360 <br>
LAT set to -88 88 <br>
LEV set to 0 0 <br>
Time values set: 1989:1:1:0 1989:1:1:0 <br>
E set to 1 1 <br>
ga-> q file<br>
File 1 : <br>
Descriptor: ersst.ctl<br>
Binary: ersst.198901.nc<br>
Type = Gridded<br>
Xsize = 180 Ysize = 89 Zsize = 1 Tsize = 1 Esize = 1<br>
Number of Variables = 3<br>
tsm 0 1,y,x temperature<br>
an 0 1,y,x anomalia<br>
er 0 1,y,x error<br>
ga-> d tsm<br>
gancgrid error: nc_get_vara_double failed; NetCDF: Index exceeds
dimension bound<br>
Data Request Error: Error for variable 'tsm'<br>
Error ocurred at column 1<br>
DISPLAY error: Invalid expression <br>
Expression = tsm<br>
ga-> quit<br>
<br>
can anywhere help me ?<br>
<br>
Thanks<br>
<br>
<br>
<span style="font-weight: bold;">My ctl file is </span>:<br>
<br>
DSET ^ersst.198901.nc<br>
*DSET ^ersst.%y4%m2.nc<br>
*OPTIONS template<br>
DTYPE netcdf<br>
UNDEF -999s<br>
xdef 180 linear 0 2<br>
ydef 89 linear -88 2<br>
zdef 1 levels 0<br>
TDEF 1 linear jan1989 1mo <br>
vars 3<br>
sst=>tsm 0 1,y,x temperature<br>
anom=>an 0 1,y,x anomalia <br>
err=>er 0 1,y,x error<br>
endvars <br>
<br>
<br>
<span style="font-weight: bold;">The Netcdf file Is:</span><br>
<br>
ncdump ersst.199908.nc <br>
<br>
netcdf ersst.199908 {<br>
dimensions:<br>
time = 1 ;<br>
zlev = 1 ;<br>
lat = 89 ;<br>
lon = 180 ;<br>
variables:<br>
float time(time) ;<br>
time:long_name = "Center time of the day" ;<br>
time:units = "days since 1854-01-15" ;<br>
time:delta_t = "0000-01-00" ;<br>
time:avg_period = "0000-01-00" ;<br>
float zlev(zlev) ;<br>
zlev:long_name = "Sea surface height" ;<br>
zlev:units = "meters" ;<br>
zlev:actual_range = "0, 0" ;<br>
float lat(lat) ;<br>
lat:long_name = "Latitude" ;<br>
lat:units = "degrees_north" ;<br>
lat:grids = "Uniform grid from -88 to 88 by 2" ;<br>
float lon(lon) ;<br>
lon:long_name = "Longitude" ;<br>
lon:units = "degrees_east" ;<br>
lon:grids = "Uniform grid from 0 to 358 by 2" ;<br>
short sst(time, zlev, lat, lon) ;<br>
sst:long_name = "Extended reconstructed sea surface
temperature" ;<br>
sst:units = "degrees_C" ;<br>
sst:_FillValue = -999s ;<br>
sst:add_offset = 0.f ;<br>
sst:scale_factor = 0.01f ;<br>
sst:valid_min = -300s ;<br>
sst:valid_max = 4500s ;<br>
short anom(time, zlev, lat, lon) ;<br>
anom:long_name = "Extended reconstructed SST anomalies" ;<br>
anom:units = "degrees_C" ;<br>
anom:_FillValue = -999s ;<br>
anom:add_offset = 0.f ;<br>
anom:scale_factor = 0.01f ;<br>
anom:valid_min = -1200s ;<br>
anom:valid_max = 1200s ;<br>
short err(time, zlev, lat, lon) ;<br>
err:long_name = "Estimated error standard deviation of
analyzed_ersst" ;<br>
err:units = "degrees_C" ;<br>
err:_FillValue = -999s ;<br>
err:add_offset = 0.f ;<br>
err:scale_factor = 0.01f ;<br>
err:valid_min = 0s ;<br>
err:valid_max = 1000s ;<br>
<br>
// global attributes:<br>
:title = "ERSST V3b in situ only" ;<br>
:history = "Version 3b" ;<br>
:creation_date = "2010-03-23" ;<br>
:description = "Smith, T.M., and R.W. Reynolds, 2003:
Extended Reconstruction of Global Se<br>
a Surface Temperatures Based on COADS Data (1854-1997). Journal
of Climate, 16, 1495-1510. A vailable at h<br>
ttp://www.ncdc.noaa.gov/img/climate/research/sst/ersst.pdf
Climatology is based on 1971-2000 OI.v2 SST, I<br>
n situ data: ICOADS2.4 before 2006 and NCEP in situ data from
2007 to present" ;<br>
:source = "NOAA/National Climatic Data Center" ;<br>
:contact = "Dick Reynolds, email:
<a class="moz-txt-link-abbreviated" href="mailto:Richard.W.Reynolds@noaa.gov">Richard.W.Reynolds@noaa.gov</a> & Chunying Liu, email: Chuny<br>
<a class="moz-txt-link-abbreviated" href="mailto:ing.liu@noaa.gov">ing.liu@noaa.gov</a>" ;<br>
:Conventions = "CF-1.0" ;<br>
data:<br>
<br>
time = 53172 ;<br>
<br>
zlev = 0 ;<br>
<br>
lat = -88, -86, -84, -82, -80, -78, -76, -74, -72, -70, -68,
-66, -64, -62, <br>
-60, -58, -56, -54, -52, -50, -48, -46, -44, -42, -40, -38,
-36, -34, <br>
-32, -30, -28, -26, -24, -22, -20, -18, -16, -14, -12, -10,
-8, -6, -4, <br>
-2, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28,
30, 32, 34, <br>
36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64,
66, 68, 70, <br>
72, 74, 76, 78, 80, 82, 84, 86, 88 ;<br>
<br>
lon = 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28,
30, 32, 34, 36, <br>
38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66,
68, 70, 72, <br>
74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100,
102, 104, 106, <br>
108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130,
132, 134, <br>
136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158,
160, 162, <br>
164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186,
188, 190, <br>
192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214,
216, 218, <br>
220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, 242,
244, 246, <br>
248, 250, 252, 254, 256, 258, 260, 262, 264, 266, 268, 270,
272, 274, <br>
276, 278, 280, 282, 284, 286, 288, 290, 292, 294, 296, 298,
300, 302, <br>
304, 306, 308, 310, 312, 314, 316, 318, 320, 322, 324, 326,
328, 330, <br>
332, 334, 336, 338, 340, 342, 344, 346, 348, 350, 352, 354,
356, 358 ;<br>
<br>
sst =<br>
_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
_, _, _, _, <br>
_, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
_, _, _, _, <br>
<br>
<br>
<div style="font-family: times new roman,new york,times,serif;
font-size: 12pt;">
<div style="font-family: times new roman,new york,times,serif;
font-size: 12pt;"><br>
</div>
</div>
</div>
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