The algorithm for the Integrated Multi-satellitE Retrievals for GPM (IMERG) Early and Late Runs has now been upgraded to Version 04.  The transition to V04 began at 15 UTC on March 13 and both the early and the late products were back to their target latency by 01:00 UTC, March 14.

The transition took longer than planned but the core IMERG version 04 products are now running automatically as the original V03. The product version is V04A and you will see this in the name of the IMERG HDF5 products. 

For IMERG late the V03 products have remained before February 05, 2017. For IMERG early V03 products remain before March 12 hour 14. 

The GIS friendly TIFF/TFW late products are available from Feb 5, hour 00 through Feb 28, hour 23.  We are in the process of catching up to ensure that TIFF/TFW late products are at V04 for the entire period of Feb 5, hour 00 to the current time. This will take several more days.  

IMERG GIS early TIFF/TFW are available in V04 from March 12 hours 16:00 forward. During the next week we will work on creating TIFF/TFW early products at V04.

Version 04 supersedes all prior IMERG versions, and users are urged to shift to the new datasets as soon as practical.

Release notes and other documentation for IMERG V04 are available on the NRT ftp site: ftp://jsimpson.pps.eosdis.nasa.gov  in the directory: /NRTPUB/documentation.

Please contact us for any questions regarding this transition.