[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
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