Data News

Following a reset of the DPR to Standby Mode that occurred on April 22, 2020, the DPR Ka radar data acquisition has been restored. PPS is releasing the DPR and downstream data for distribution from April 22, 2020 - April 30, 2020. There are continuing short data outages for the radar that are being investigated and corrective measures are scheduled to be applied on May 14, 2020. PPS will be releasing May 2020 data in stages with an expected return to normal data availability soon after the corrective measures are applied. For Level-1 and Level-2 products, users should check the dataQuality flag given per scan to check validity of the data. For a list of orbits that were impacted by the radar anomalies, please see: GPM Spacecraft Data Discrepancies and Anomalous Events Table (https://pps.gsfc.nasa.gov/Documents/gpm_anomalous.html

 

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At 07:56:59GMT (3:56:59AM EDT) on April 22, 2020 both units on the Dual Precipitation Radar reset from Observation Mode to Standby Mode. The recovery process is ongoing for the Ka radar and we expect production of all radar products to resume normal operations soon. GMI operations and data products continue to be nominal during this time.

PPS Production:
PPS has put all radar and downstream product distribution on hold. Once products are released users should expect to see some partial and/or fully empty radar products. PPS will provide a complete listing of the anomaly orbits once we have all the information after recovery.

GPM Near-Real-time (NRT):
Ku radar data is continuing to be received and Level-2 Ku products are currently being made available. As of April 26, 2020 the Combined 2BCMB product is using Ku radar and GMI data as input without the Ka data available. Updates will be sent once normal Ka data operations have been restored.
 

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PPS is converting all of the V7 TMPA 3B42 and 3B43 data products to the HDF5 format.  These products will be available from the PPS archive after the products are produced and archived at:

ftp://arthourhou.pps.eosdis.nasa.gov 
The data will be located under the 'trmmdata'  directory along side of the current HDF4 products and also through STORM (PPS's Online Data Ordering Interface): 
https://storm.pps.eosdis.nasa.gov 

Please note that the file name will match the HDF4 file name with the exception of the file extension which will be HDF5.  Also, as HDF5 uses internal compression, there will be no gzipped files in the archive.

If you are not already registered with PPS, you can go to our registration portal at: 
https://registration.pps.eosdis.nasa.gov/registration/

NASA/GSFC requires this mandatory and simple step.

Starting on June 1, 2020 PPS will start STORM support for HDF5 and cease support of HDF4.  There will only be ONE version of the 3B42/3B43 products visible in STORM at any one time.  Users wishing to order the HDF5 products using STORM will need to wait until after June 1, 2020.  Products will be available directly from the PPS archive as soon as they are processed.

The following datasets will be converted to HDF5:


DataType             DataStart                             DataStop
3B42                     1997-12-31 22:30:00    2019-12-31 22:29:59
3B43                     1998-01-01 00:00:00     2019-12-31 22:29:59   

We thank you for your attention.  Please inform us if you have any questions or concerns. 
 

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Effective 1 June 2020, ftp will no longer be available on the NRT server

jsimpson.pps.eosdis.nasa.gov 

Effective that date the primary access method will be ftps.  A number of different ways to use ftps are available:

1. Python 3 ftplib supports ftps
2. In Linux lftp is a ftps client
3. curl works with ftps
4. wget works with ftps
5. Packages are available for Windows

You will need to have your system administrators open ports 64000-65000 in order for you ftps connection to jsimpsonftps.pps.eosdis.nasa.gov to work. If your attempt fails (hangs), it is likely that these ports are not available.

You may use jsimpsonftps.pps.eosdis.nasa.gov immediately and continue to use it after 1 June 2020. On 1 June 2020 jsimpson.pps.eosdis.nasa.gov will also be an IP name for the PPS NRT ftps server. Effective on 1 June 2020 both

jsimpsonftps.pps.eosdis.nasa.gov
          and
jsimpson.pps.eosdis.nasa.gov

are valid names (URL) for the PPR NRT ftps service.  Connections should always be made using the full name and not an alias.

For those people who can't use the preferred ftps connection we have made available an https server that has a REST service available so that you do not have to screen scrape XML pages. The REST https server uses the following URL:

https://jsimpsonhttps.pps.eosdis.nasa.gov/text/

This will provide text responses and not XML.

If you use the standard URL:

https://jsimpsonhttps.pps.eosdis.nasa.gov

You will get XML to scrape.

Documentation for this https service can be downloaded now via ftp from jsimpson.pps.eosdis.nasa.gov. Please retrieve it and read it. You should find the https server easy to use.

Also please note that jsimpsonhttps is likely to be down much longer during maintenance as the Apache software used is much more complicated to update.
Our experience shows that there are often problems with the working configurations after an update is installed.

On some occasions, jsimpsonhttps might be down for more than half day. All depends upon the complexity of the Apache update. As https is not the primary access mechanism to PPS NRT data, there is no redundent server for jsimpsonhttps.pps.eosdis.nasa.gov. So, recovery from a catastrophic server failure may take much longer. During this down period the https service may not be available.  PPS, of course, will do its utmost to repurpose another server for https services as fast as it can.

However, jsimpsonftps will retain the same uptime as the current ftp server.  So, it is suggested that if possible longer downtimes are a problem for you:  use of GPM NRT data, you should use ftps rather than https.  We will, of course, work hard to keep downtime on all the NRT servers down to the absolute minimum necessary to complete maintenance.

For questions, please email: erich.f.stocker@nasa.gov. However, if questions are about https, please ensure that you have read the documentation first. It might provide the answer that your are seeking.
 

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Commencing today, Wednesday January 29, 2020, PPS is producing and releasing new satellite  METOPC MHS GPM Level 1C and GPROF METOPC MHS GPM Level 2 and Level 3 data and Climatology Products V05.  These new products will have the starting date of December 11, 2019.

GPROF METOPC MHS GPM Level 2 and Level 3 Climatology products will be produced once the ERA5 input data is received for December 2019.

See the tables below for pertinent  details.

List of data types, product versions and start dates
+---------------------+----------------+---------------------+
| DataType            | ProductVersion | StartDate           |
+---------------------+----------------+---------------------+
| 1CMETOPCMHS         | V05A           | 2019-12-11 10:35:00 | 
| 2AGPROFMETOPCMHS    | V05D           | 2019-12-11 10:35:00 | 
| 3GPROFMETOPCMHS_DAY | V05D           | 2019-12-11 00:00:00 | 
| 3GPROFMETOPCMHS     | V05D           | 2019-12-01 00:00:00 |

+--------------------------+----------------+---------------------+
| DataType                 | ProductVersion | StartDate           |
+--------------------------+----------------+---------------------+
| 2AGPROFMETOPCMHS_CLIM    | V05E           | 2019-12-11 10:35:00 | 
| 3GPROFMETOPCMHS_DAY_CLIM | V05E           | 2019-12:11 00:00:00 | 
| 3GPROFMETOPCMHS_CLIM     | V05E           | 2019-12-01 00:00:00 |

Please visit our registration portal for access to GPM data products if you have not previously registered with PPS:
https://registration.pps.eosdis.nasa.gov/registration/
 

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As previously announced, with the recent release of the long-record V06B IMERG Early, Late, and Final products in late summer of 2019, processing of the TMPA-RT and TMPA products is ending, with December 2019 being the final month of data.  This means that TMPA-RT products have already ceased production and the TMPA products will end with December 2019 (expected by March 2020).  Thanks go to the PPS team, who managed to keep some really old computer hardware alive long enough to meet this goal!

These legacy products will continue to be hosted at PPS and GES DISC to allow users sufficient time to transition to the current IMERG datasets.  These archives remain the same, except that with the demise of the system that hosted the TRMM-RT archive at PPS, the data are now located at  ftp://arthurhou.pps.eosdis.nasa.gov/trmmopen/.  Note that if you have not previously requested a (free and automatic) account on "arthurhou", you will be prompted to do so the first time.  Questions on the new location of TMPA-RT may be directed to the PPS help desk (helpdesk@mail.pps.eosdis.nasa.gov).
 

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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.

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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 discard these and use the replacement products when available. 

  • 2A.GPM.Ku.V8-20180723.20191106-S035302-E052535.032319.V06A.HDF5
  • 2A.GPM.Ka.V8-20180723.20191106-S035302-E052535.032319.V06A.HDF5
  • 2A.GPM.DPR.V8-20180723.20191106-S035302-E052535.032319.V06A.HDF5
  • 2B.GPM.DPRGMI.CORRA2018.20191106-S035302-E052535.032319.V06A.HDF5
  • 2A.GPM.DPR.GPM-SLH.20191106-S035302-E052535.032319.V06A.HDF5
  • 3A-ORBIT.GPM.DPR.GPM-SLH.20191106-S035302-E052535.032319.V06A.HDF5

If you have any questions, comments or concerns, please do not hesitate to contact us. 
 

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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/atbd.html

The TRMM/GPM CSH V06A L2-L3 products will be made available through the PPS "arthurhou" ftp archive:
ftp://arthurhou.pps.eosdis.nasa.gov/

and STORM (PPS's Online Data Ordering Interface):
https://storm.pps.eosdis.nasa.gov
after these products are produced and archived.

The following data will be reprocessed:
+---------------------+--------+-----------------------------+-----------------------------+--------------------------------------------------------------------+ 

| DataType           | V06A | StartTime                    |
StopTime                      | DOI
+---------------------+---------+----------------------------+-----------------------------+--------------------------------------------------------------------+ 

| 2HCSH_TRMM | V06A | 1997-12-08 21:15:58 | 2015-04-01 11:58:39
|10.5067/GPM/PRTMI/TRMM/CSH/2H/06                   |  3GCSH_TRMM | V06A 
|| 1997-12-08 21:15:58 | 2015-03-31 23:59:59 |
10.5067/GPM/PRTMI/TRMM/CSH/3G/06                  |
| 3HCSH_TRMM | V06A | 1997-12-01 00:00:00 | 2015-03-31 23:59:59 |
10.5067/GPM/PRTMI/TRMM/CSH/3B-MONTH/06  |
| 2HCSH               | V06A | 2014-03-08 22:09:50 | present
|10.5067/GPM/DPRGMI/CSH/2H/06                             |  3GCSH               
|| V06A | 2014-03-08 22:09:50 |
present                         |
10.5067/GPM/DPRGMI/CSH/3G/06                            |
| 3HCSH               | V06A | 2014-03-01 00:00:00 |
present                         |
10.5067/GPM/DPRGMI/CSH/3B-MONTH/06            |
+---------------------+--------+-----------------------------+-----------------------------+---------------------------------------------------------------------+ 


Please visit our registration portal for access to GPM data products if 
you have not previously registered with PPS:
https://registration.pps.eosdis.nasa.gov/registration/

If you have any concerns, comments or questions, please inform the PPS 
Helpdesk at:
helpdesk@mail.pps.eosdis.nasa.gov
 

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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.
 

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