[gradsusr] [Ticket 21816] New: How to open TRMM hdf files.

Lynnes, Christopher S. (GSFC-6102) christopher.s.lynnes at nasa.gov
Thu Oct 4 12:11:06 EDT 2012


BTW, some extra info for newcomers to the data processing level classification used by NASA and some other remote sensing agencies:

"L2" (aka Level 2) data are produced in the satellite's native orbit/swath coordinates, not a regular geographic grid. This makes them resistant to GrADS usage (as the Gr stands for Grid).

"L3" (Level 3) data are projected to a recognizable georeferenced grid.

For TRMM data, if the product name starts with a '2', it is Level 2 data, e.g., 2A23.  If it starts with a '3', it is Level 3 data, e.g., 3B42.

On Oct 4, 2012, at 10:38 AM, Zhong Liu wrote:

Dear Ahsan,

GrADS can't read TRMM L-2 products including 2A23. You might consider
to use other software packages, such as those listed here,

http://disc.sci.gsfc.nasa.gov/precipitation/additional/tools

For TRMM L-3 products, we have these sample ctl files,

http://disc.sci.gsfc.nasa.gov/precipitation/Samples_ctl_TRMM_V7.pdf

Hope these help.

Regards,

-Zhong

--
Dr. Christopher Lynnes     NASA/GSFC, Code 610.2    phone: 301-614-5185


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20121004/e8fea009/attachment-0003.html 


More information about the gradsusr mailing list