Maybe something worth mentioning ....
When we established the "geostationary" projection earlier this year, we needed
to establish a "sweep angle" projection parameter for tyhe projection software
to properly locate pixels on the earth for both the Meteosat and GOES satellite.
checkout ...
http://trac.osgeo.org/proj/wiki/proj%3Dgeos
---------- Original Message ----------------------------------
From: Tom Whittaker <whittaker@xxxxxxxx>
Date: Tue, 21 Aug 2012 16:05:04 -0500
>Hello Ghansham...
>
>I hope you are well.
>
>I believe the "scan direction" (either "up/down" or "left/right") is a
>matter of perspective -- if the frame of reference is on the
>satellite, looking "forward" along the flight path, then I would be
>more inclined to say "left/right", as "up/down" would refer to some
>vertical scanning -- from my frame of reference on the satellite.
>
>Regarding CF Conventions. There are no conventions for dealing with
>this. There have been discussions in the past dealing with "swath
>data", and you might have a Google of that (plus 'netcdf') and see
>what others have been thinking about.
>
>There is also at least one reference to some data already being
>written to hdf files, which might prove of interest. The sad fact is
>that the satellite community for the longest time did not embrace
>NetCDF, and so we must play "catch-up" with the people who have
>defined conventions for model/gridded data and in-situ data.
>
>My take is that some common characteristics (like 'band' and
>'central_wavelength' (or _wavenumber) should be defined using
>conventions and "standard_names", but that characteristics of
>particular platforms must, by necessity, be defined for those
>platforms. I also think that the use of the "standard_names" will go
>a long way toward helping application developers in writing file
>readers that can understand some of the basic structures of the data,
>while at the same time providing end users an opportunity to write
>specialized interfaces that meet their particular research or
>operational needs.
>
>Best wishes,
>
>tom
>
>
>--
>Tom Whittaker
>University of Wisconsin-Madison
>Space Science & Engineering Center (SSEC)
>Cooperative Institute for Meteorological Satellite Studies (CIMSS)
>1225 W. Dayton Street
>Madison, WI 53706 USA
>ph: +1 608 262 2759
>
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