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ms2gt MODIS reprojection toolkit [message #70634]

Tue, 27 April 2010 02:43

Maarten[1]
Messages: 176
Registered: November 2005

Senior Member

Hi Folks,

I'm trying to set up the 'modis swath to grid toolkit' reprojection
software [1]. With some other background documents [2, 3], I think I
have the tools set up correctly (the verification in [1] passes), but
it seems I can't get the thing to run properly. Oh, in case you're
wondering why I post in this group: the code is a collision of IDL,
Perl and C, with more folks over here with knowledge of map
projections than in the Perl and C newsgroups.

I'd like to reproject to a Cylindrical Equidistant grid (yes, I've
read [3]), for later use with other satellite data (OMI/Aura most
likely). The trouble with MODIS is that it is just too much data, and
I always found plotting it too hard to bother. However, with the
recent eruption of Eyjafjallajökull we felt the need to combine MODIS/
Aqua (RGB, aerosol) with OMI/Aura (aerosol, SO2). So, here I am,
trying to get ms2gt to run, to have at least one of the instruments on
an easy to visualize grid.

The Cylindrical Equidistant map projection is one of the supported
projections according to the documentation, however, no matter how
hard I try, I always get a message that Cylindrical Equidistant is not
supported (followed by a list of supported projections which,
annoyingly, includes Cylindrical Equidistant).

* Can someone supply me with a working set of configuration files to
start with MODIS 1KM data (so the 250 and 500 m channels are
aggregated into 1 km bins) and end up with a Cylindrical Equidistand
grid?

* If someone has a suggestion on how to do this with reasonable
accuracy within IDL alone, then I'm all ears.

So, with that last question I even managed to get back to the main
subject of the newsgroup...

Best,

Maarten

[1] http://nsidc.org/data/modis/ms2gt/
[2] http://geospatialmethods.org/documents/ppgc.html
[3] http://nsidc.org/data/psq/grids/ece_grids.html~

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[Message index]

		ms2gt MODIS reprojection toolkit By: Maarten[1] on Tue, 27 April 2010 02:43
		Re: ms2gt MODIS reprojection toolkit By: David Fanning on Thu, 29 April 2010 05:02
		Re: ms2gt MODIS reprojection toolkit By: Klemen on Thu, 29 April 2010 02:00
		Re: ms2gt MODIS reprojection toolkit By: Maarten[1] on Thu, 29 April 2010 01:07
		Re: ms2gt MODIS reprojection toolkit By: Klemen on Wed, 28 April 2010 15:59
		Re: ms2gt MODIS reprojection toolkit By: Klemen on Wed, 28 April 2010 09:35
		Re: ms2gt MODIS reprojection toolkit By: Klemen on Wed, 28 April 2010 09:26
		Re: ms2gt MODIS reprojection toolkit By: David Fanning on Wed, 28 April 2010 09:23
		Re: ms2gt MODIS reprojection toolkit By: Maarten[1] on Wed, 28 April 2010 09:00
		Re: ms2gt MODIS reprojection toolkit By: Klemen on Wed, 28 April 2010 08:34
		Re: ms2gt MODIS reprojection toolkit By: lbusett@yahoo.it on Wed, 28 April 2010 01:25

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