One more observation: while trying to investigate the problem
further, I've tried to turn the logging feature of the ‘oc’
library (which is part of NetCDF) on via setting the ‘OCLOGFILE’
environment variable to point to a file. Instantly, the issue
was no more. Consider, e. g.:
$ OCLOGFILE=/dev/null \
ncdump -h
http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20110128/gfs_hd_00z\?tmpsfc
netcdf gfs_hd_00z {
dimensions:
lat = 361 ;
lon = 720 ;
time = 65 ;
variables:
float tmpsfc(time, lat, lon) ;
tmpsfc:_FillValue = 9.999e+20f ;
tmpsfc:missing_value = 9.999e+20f ;
tmpsfc:long_name = "** surface temperature [k] " ;
// global attributes:
:title = "GFS half degree (0.5x0.5) fcst starting from
00Z28jan2011, downloaded Jan 28 04:33 UTC" ;
:Conventions = "COARDS\n",
"GrADS" ;
:dataType = "Grid" ;
:history = "Fri Jan 28 04:37:22 UTC 2011 : imported by GrADS
Data Server 2.0" ;
}
$
… A Heisenbug?
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