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Its a geostationary satellite imagery full disk dataset. If you want I can upload a sample product. I hope you are able to conceptualize why it is unavoidable to do away eith cold space. regards Ghansham On Mar 2, 2014 6:19 PM, "rhorne@xxxxxxxxxxxxxxxxx" <rhorne@xxxxxxxxxxxxxxxxx> wrote: > Ghanshsan: > > I have a question about the variables (data structures) you are using to > store the image data. > > If your data is on a lat/lon grid of some sort (e.g. 90 degrees of > longitude and 180 degrees of latitude, which from a data structure > perspective is rectangular and all pixels/data points are on-earth), what > is the motivation for including off-earth regions in the data variable ? > > very respectfully, > > randy > > > > ------------------------------ > *From*: "Ghansham Sangar" <ghanshamsangar@xxxxxxxxx> > *Sent*: Sunday, March 02, 2014 5:58 AM > *To*: "cf-satellite" <cf-satellite@xxxxxxxxxxxxxxxx> > *Subject*: Re: [cf-satellite] missing value in auxillary coordinate > variables > > > what is your opinion about geostationary satellites where we have to cold > space all around the imaged disk and we are providing geolocation > information per pixel lat /lon as 2D lat/lon arrays. > Regards > Ghansham > On Mar 1, 2014 12:46 AM, "Jim Biard" <jbiard@xxxxxxxxxx> wrote: >> >> Ghansam, >> >> Actually, in the satellite world (or any trajectory or swath-type case), >> it is entirely possible that you might have acquired measurements at a >> point, but the location information for that point may have been garbled or >> lost. If we don't require linkage, then we can preserve the maximum amount >> of data. >> >> Grace and peace, >> >> Jim >> >> [image: CICS-NC] <http://www.cicsnc.org/>Visit us on >> Facebook <http://www.facebook.com/cicsnc> *Jim Biard* >> *Research Scholar* >> Cooperative Institute for Climate and Satellites NC <http://cicsnc.org/> >> North Carolina State University <http://ncsu.edu/> >> NOAA's National Climatic Data Center <http://ncdc.noaa.gov/> >> 151 Patton Ave, Asheville, NC 28801 >> e: jbiard@xxxxxxxxxx >> o: +1 828 271 4900 >> >> >> >> On Feb 28, 2014, at 2:12 PM, Ghansham Sangar <ghanshamsangar@xxxxxxxxx> >> wrote: >> >> >> hi sir >> thanks a lot for the prompt reply. >> obviously data should be missing where coordinates are missing. >> ghansham >> On Mar 1, 2014 12:22 AM, "Jim Biard" <jbiard@xxxxxxxxxx> wrote: >>> >>> Ghansham, >>> >>> I would say yes, unreservedly, but others are insisting that this only >>> OK if you also have missing values in all the associated data variables. >>> >>> Grace and peace, >>> >>> Jim >>> >>> [image: CICS-NC] <http://www.cicsnc.org/>Visit us on >>> Facebook <http://www.facebook.com/cicsnc> *Jim Biard* >>> *Research Scholar* >>> Cooperative Institute for Climate and Satellites NC <http://cicsnc.org/> >>> North Carolina State University <http://ncsu.edu/> >>> NOAA's National Climatic Data Center <http://ncdc.noaa.gov/> >>> 151 Patton Ave, Asheville, NC 28801 >>> e: jbiard@xxxxxxxxxx >>> o: +1 828 271 4900 >>> >>> >>> >>> On Feb 28, 2014, at 12:53 PM, Ghansham Sangar <ghanshamsangar@xxxxxxxxx> >>> wrote: >>> >>> >>> hi sir >>> Is it possible to specify missing value in auxillaery coordinate >>> variables (2-D lat/lon variables). >>> Regards >>> Ghansham >>> _______________________________________________ >>> cf-satellite mailing list >>> cf-satellite@xxxxxxxxxxxxxxxx >>> For list information or to unsubscribe, visit: >>> http://www.unidata.ucar.edu/mailing_lists/ >>> >>>
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