TRMM Level 2-Level 3 GPROF Processing Announcement
With the completion of the TRMM era GPM constellation version 8 level 1 processing, PPS will start to process the TRMM era MHS, SSMIS, AMSR2 and ATMS version 8 level 2 and level 3 GPROF products on Monday October 16, 2017. Similar to the TRMM version 8 level 1 constellation products, all level 2 and level 3 GPROF products will be produced as GPM version V05, all products are in HDF5 format, all product names will use the GPM file naming convention:
All users are encouraged to retrieve the improved TRMM version 8 level 2 and level 3 GPROF products to ensure that they use the most recent products. Currently, the only TRMM version 8 level 2 and level 3 GPROF products being reprocessed are listed below with their types, product version, start time and end time:
Data Source Product Version Start of Data End of Data
F16_SSMIS V05A 2005-11-20 02:35:27 2014-01-31 23:33:42
F17_SSMIS V05A 2008-03-19 10:14:53 2014-01-31 22:50:49
F18_SSMIS V05A 2010-03-08 00:32:16 2014-01-31 23:42:12
GCOMW1_AMSR2 V05A 2012-07-02 22:31:17 2014-01-31 23:57:34
METOPA_MHS V05C 2006-12-04 23:27:59 2014-01-31 23:23:50
METOPB_MHS V05C 2013-04-23 21:51:52 2014-01-31 22:37:52
NOAA18_MHS V05C 2005-05-25 16:54:59 2014-01-31 22:43:28
NOAA19_MHS V05C 2009-02-25 00:52:34 2014-01-31 22:42:29
NPP_ATMS V05C 2011-12-09 23:39:12 2014-01-31 23:41:53
PPS will reprocess the entire TRMM era level 2 and level 3 GPROF products. However, any data dated prior to 2006-01-01 will not be commenced until the snow data from December 1997 to December 2005 are available. Currently GPROF for TMI, AMSUB, SSMI, AMSRE, and Level 2- Level 3 TRMM PR is under evaluation. Reprocessing for these will not begin until early 2018. PPS will inform user community once they are available.
Please note that the above Product Version V05C follows the recent PPS announcement: “Starting with data date October 01, 2017, the Level 2-Level 3 GPROF data for METOPA, METOPB, NOAA18, NOAA19 (MHS) and NPP ATMS partner products will be running new code and produced as product version V05C.”
The other note is that the GANAL ancillary data is not available back through the TRMM era. So only the GPROF products using the ECMWF ancillary data will be produced.
All processed TRMM era version 8 level 2 and level 3 GPROF products will be held until they have been reviewed and verified by the Science Team. The processed TRMM era version 8 level 2 and level 3 GPROF products will be released to the public upon their approval.
TRMM version 8 level 2 and level 3 GPROF product release notes and other documentation can be found on the PPS public website at
We will include any new information in a future announcement.