Data News

Beginning with August 19, 2019 at 13:00 UTC, noise in the form of random horizontal lines over the Eastern Pacific began appearing, with most of the problems appearing each following day in the 12:00, 12:30, and 13:00 half-hours, with at least one instance of 13:30. This was traced to noise in the GOES-W Tb’s (as the result of the faulty sensor cooling system), which made it past the filtering at CPC, where the Merged Global 4-km IR dataset is assembled. The Early and Late datasets contain these errors, which will be dealt with in the Final computation.

PPS will halt the NOAA-19 L1C and GPROF products for the time being due to problems with the input received. Indications are that the NOAA-19 MHS channel 2 has failed. The input data (MSPPS_ORB) used for producing the NOAA-19 MHS L1C product is flagging all the Ta as missing, and as a result the L1C and GPROF products for NOAA-19 have ceased. We will inform you when and if we have any new details or announcements. Thank you for your attention and patience during this time.

PPS will resume to process NOAA-19 MHS L1C and GPROF products for the granules starting from 09/20/2019 10:22:10 UTC. There was an issue with the satellite drifting which caused issues with the pre-processing. NOAA/NESDIS updated the processing coefficient and made the NOAA-19 MHS channel 2 L1B data back to normal.

The Precipitation Processing System (PPS) has begun the TRMM and GPM Goddard Convective-Stratiform Heating (CSH) V06A level 2 and level 3 data reprocessing on, Monday October 21, 2019. This reprocessing will cover the whole life for TRMM and the period from the launch to current for GPM. The release notes (CHS V06) explaining the key changes from V05A and improvements implemented in the current V06A product will be available later this week and will be posted on the following PPS public web pages as soon as it's provided: https://pps.gsfc.nasa.gov/GPMprelimdocs.html https://pps.gsfc.nasa.gov

PPS will replace GPM Ka/Ku L1B products from JAXA and will reprocess the affected data including Level 2 and 3 data. If you have already obtained products with orbit#32319 from our archive or through a standing order, etc., please discard and use the replacement products when available. PPS will replace the following GPM Ka/Ku L1B data: GPMCOR_KUR_1911060353_0525_032319_1BS_DUB_05C.h5 GPMCOR_KAR_1911060353_0525_032319_1BS_DAB_05C.h5 PPS will reprocess the affected L2-3 downstream products. If you have obtained any of these products from our archive or through a Standing Order, etc., please

Difficulties with accessing NOAA CPC 4-km Merged Global IR data resulted in the loss of IR data in IMERG Early Run for 12 November 12:00-21:30 UTC and 14 November 10:00-15 November 10:30 UTC, and in IMERG Late Run for 12 November 12:00-20:30 UTC and 14 November 10:00-15 November 09:30 UTC. Subsequently, the IR data were retrieved for use in the Final Run.

For the period 03Z August 21 to 16Z August 22, the IMERG real time system experienced an outage of CPC 4-km IR data. Despite the outage, IMERG EARLY and LATE products continued to be produced but users should be aware that the quality of these products during this period may be suspect and should be used judiciously. Furthermore, the products for the first few hours after the outage are less than optimal due to IMERG restart but should be acceptable for most users. Detailed Impacts: (1) The precipitation propagation vectors for the period slowly degraded after 03Z August 21 due to the missing

L1C NPP ATMS intercalibration table has been updated to account for the NPP ATMS SDR calibration update occurred on March 8, 2017. As a result, PPS will change the L1C NPP ATMS product version to V05B. The downstream L2 - L3 product versions will also be advanced one letter from V05C to V05D. DataType ProductVersion Start of version End of version 1CNPPATMS V05A 2011-12-09 23:39:12 2018-08-19 22:54:33 2AGPROFNPPATMS V05C 2014-01-31 23:41:54 2018-08-19 22:54:33 3GPROFNPPATMS V05C 2014-02-01 00:00:00 2018-07-31 23:59:59 3GPROFNPPATMS_DAY V05C 2014-02-01 00:00:00 2018-08-18 23:59:59 Please let us

PPS is releasing version 3.80.44 build of the PPS TKIO toolkit using the 14.0.1 Fortran compiler for GPM. As detailed in our earlier announcement that you received on Thursday, June 28th, 2018, titled; "PPS is Reprocessing TRMM PR Data as TRMM GPM, Version 06A HDF5 products in Early July 2018" This is the version of the PPS I/O Toolkit that will be used for these radar products. The release notes are in this directory and are also attached to this Email: ftp://gpmweb2.pps.eosdis.nasa.gov/pub/PPStoolkit/GPM/tkio-3.80.44/ The tar file can be found at: ftp://gpmweb2.pps.eosdis.nasa.gov/pub

The TRMM Version 7 Precipitation Radar (PR) products will be superseded by new GPM era products with a reprocessing that will generate TRMM retrievals from the beginning of the TRMM mission to the end of data collection using a single frequency retrieval algorithm similar to that used for GPM Ku. This reprocessing will begin in early July, 2018. Retrievals previously available in the TRMM Version 7 products 2A21, 2A23, 2A25, and 3A25 will be available in the new 2APR and 3PR products. Note that these new GPM era products are in HDF5 format and similar in structure to those used for GPM DPR