V04 Processing processing of GMI GPROF retrievals began at 11:20 UTC, May 2.
Please note the the GPM Near-realtime (NRT) subsystem began to run the V04A GPROF precipitation retrieval effective 11:20UTC, May 2, 2016.
Information about changes in the version can be found in the document GMI.V4.Release.Notes_05.01.2016.pdf that is located in directory /NRTPUB/V4ReleaseInfo
The biggest change in the retrieval is the use of an a-priori database constructed...
Beginning on April 6, anomalies in the input SSMIS F17 precipitation estimates were detected in the IMERG Early and Late runs. These anomalies manifest as episodic “swath shaped” areas of high precipitation over land which appear to affect most orbits to some degree. The root cause is degradation in the 37 GHz V polarization channel. On April 13 the issue was somewhat mitigated but we continue to monitor the situation. Please let us know if you detect these (or other...
Late on March 2, 2016, the GPM NRT system will begin using V04 algorithms
Level 1B GMI
Level 1C GMI
Level 1 Radar
Level 2 Radar
Level 2 Combined
V04 is the first version that uses GPM as the calibrator for the constellation
rather than TRMM. The GPROF database is built using the combined observations.
GMI is extremely well calibrated and the brightness temperatures in 1B and 1C
are an important improvement over those in V03.
V04 also made improved retrievals in the Ku, Ka, and DPR...
Thursday, February 25, 2016
Thursday, February 18, 2016
The Washington, DC area is about to get hit with a record-level snow storm, with attendant disruptions to work schedules, travel, communications, and power. If you find that the TMPA-RT or IMERG products drop out, it is safe to assume that some combination of these effects is preventing production, and we will work to restore service when that is possible.
With the turnover of the year to 2016, the suite of 3B40RT, 3B41RT, and 3B42RT failed to process. Despite the holiday weekend, this was traced to a very old quality control on the date/time, fixed, and retrospectively processed to give a complete time series. Thanks to Erich Stocker and David Bolvin for this effort.
The affected date/times are 160101 00UTC through 160102 12UTC.
Thursday, November 19, 2015
One of our scientists noticed that the 85GHz H and V channels have missing values in ascending passes just south of 20 deg S. In that region it appears consistently since 10:45UTC which is the earliest we checked. The other channels seem fine.
The counts for the 85GHz channels appear to be fine as is the geolocation. However both the 1B and 1 Base files have the missing values in that area. We are checking what is causing the algorithm to list the values as ...
PPS web services are now functioning normally. PPS has identified and fixed the previous production web server problem which caused the intermittent unavailability and/or slow response times experienced for the last few days. If you experience any further problems or inconsistencies with PPS web services including:
ftp://arthurhou.pps.eosdis.nasa.gov (GPM FTP data)
http://pps.gsfc.nasa.gov (PPS home page)
https://storm-pps.gsfc.nasa.gov (PPS STORM)