Using Windows-based GrADS to examine TRMM orbit data files

[Mike Bosilovich]

If you really want the orbital data, rather than a higher level gridded
product, I'm pretty sure that you need an intermediate step to put the
swath(s) in a grid that grads is friendly with. For MODIS L2 swaths, I used
hdflook (on linux) to save lat-lon grids from the swaths. However it was
very cumbersome, and you would not want to do that with large amounts of
data.

I haven't seen grads open swaths (and the other replies confirm that), but I
might make use of such a utility. So, you need an HDF tool, for the PC that
will open swath, and write a grid. That grid would go into PCgrads.

Good Luck,

Mike

On Mon, Jul 21, 2008 at 8:11 AM, Mr Aaron Pratt <aspratt2000 at yahoo.com>
wrote:

>  Hello,
>
> I am trying to create plots derived from the TRMM 2A12 orbital product
> (it's the hydrometeor profile data) . It's not gridded data, but rather in
> orbital swaths. The files are HDF files, so that's why I thought that GrADS
> might be able to open them. However, I wasn't sure if the HDF files needed
> to be converted into a GrADS type file (like a .ctl file and the
> corresponding .dat file). I was told that the files could be converted
> through the following link: http://disc2.nascom.nasa.gov/data/TRMM/;
> however I don't see anywhere on the website where this is possible. Thanks
> in advance for any help that can be provided.
>
> Aaron
>
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