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Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
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R/Sir I understand that the ticket is raised for geostationary satellite. But I can show some cases of POES where the satellite coverage is over tropics only. and thats why satellite is scanning along the longitude lines and not latitude lines. I hope I am clear in communicating that. For more information see this link: http://smsc.cnes.fr/MEGHAT/GP_satellite.htm regards Ghansham On Thu, Aug 16, 2012 at 12:48 PM, Martin Raspaud <martin.raspaud@xxxxxxx>wrote: > On 16/08/12 06:39, ghansham sangar wrote: > > R/Sir > > > > I have a query related to something scanning direction. > > Are there any conventions in CF that denote in which direction the > scanning > > is happening. > > Generally all the geostationary and POES satellites scan along the > latitude > > lines. > > But there are some satellite specially designed for tropical region where > > we see that they scan along > > the longitude lines. Are there any ways to denote that. I think if it is > > not there, then we should include > > them somewhere. > > Hi Ghansham, > > I agree with you, this should be specified. > One way to specify this in the geostationary case is to use the soon to > be added "geostationary" projection definition (see here: > https://cf-pcmdi.llnl.gov/trac/ticket/72 ) > > However, this doesn't entirely solve the direction issue, as an > instrument might scan from right to left or left to right (or both), > which might be important to know in some cases. > > Maybe this could be an attribute to the data (eg "scanning_direction") > or even a flag for the cases where several directions are used ? > > Ideally, one could specify the time of capture for each sample, but that > might be overkill (and occupy unnecessary space). > > Best regards, > Martin > > _______________________________________________ > 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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