Global Precipitation Measurement (GPM) mission Precipitation Processing System (PPS)
GPM Data Products and PPS Erich Franz Stocker NASA/GSFC Code 610.2
[email protected] Erich Franz Stocker - Page 1
GV International Workshop-Seoul Korea
May 12, 2015
Topics
• Standard GPM mission products available • Obtaining GPM mission products
• Current version numbers for production • Reprocessing plans
Erich Franz Stocker - Page 2
GV International Workshop-Seoul Korea
May 12, 2015
Obtaining All GPM Mission products • Must be a registered PPS user – Register at URL: http://registration.pps.eosdis.nasa.gov – Required information • Valid, reachable email • Affiliation • GPM product interest – Will receive an email to the registered address and must then validate
• Registered email address is used as username AND password for both the query and search interface – STORM: http://storm.pps.eosdis.nasa.gov – ftp location: arthurhou.pps.eosdis.nasa.gov
• All products including gridded text products are online and available through STORM or FTP • FTP access is really a special anonymous ftp implementation. – For Linux and Mac it is possible to make a .netrc entry – A .netrc entry will facilitate downloading data via scripts without requiring manual entry of username and password. Erich Franz Stocker - Page 3
GV International Workshop-Seoul Korea
May 12, 2015
GPM Production Swath Products Toolkit ID
Granule
Description
1AGMI
Gorbit
GMI unpacked packet data
1BGMI
Gorbit
GMI Brightness Temperatures
1CGMI
Gorbit
GPM Common Calibrated Brightness Temperature
GMIBASE
Gorbit
GMI Antenna Temperatures
1BKa
Gorbit
Ka Power
1BKu
Gorbit
Ku Power
2AGPROFGMI
Gorbit
Radiometer Precipitation/profiling
2BCMB
Gorbit
L-2 Combined DPR and GMI
2ADPR
Gorbit
DPR precipitation
2AKa
Gorbit
Ka precipitation
2AKu
Gorbit
Ku precipitation
Gorbit- Southernmost point of orbit to southernmost Erich Franz Stocker - Page 4
GV International Workshop-Seoul Korea
May 12, 2015
GPM Mission Gridded Products
Toolkit ID
Granule
Description
3AGMIGPROF
Daily & Monthly
GMI GPROF precip .25 deg x .25 deg
3APartnerGPROF
Daily & Monthly
Partner Constellation GPROF precip .25 deg x .25 deg
3ADPR
Daily & Monthly
Radiometer Precipitation/profiling Ku/Ka/DPR
3ADPR
Daily
3ACMB
Daily & Monthly
Subset of the full product in row above L-2 Combined DPR and GMI
3IMERG-HH*
Half-hour
.1 deg x .1 deg merged radiometer/IR Precip
3IMERG-Mo
Monthly
.1 deg x .1 deg merged radiometer/IR Precip
Gridded Text Product (ASCII)
Hourly in daily files
.25 deg x .25 deg radiometer,Ku,Ku/Ka matched, GMI/Ku/Ka matched
* Full product in HDF5 a GIS_friendly format subset in TIFF+WorldFile Erich Franz Stocker - Page 5
GV International Workshop-Seoul Korea
May 12, 2015
GPM Near-realtime (NRT) Products Toolkit ID
Description
1CGMI
GPM Common Calibrated Brightness Temperature (5min)
2AGPROFGMI
Radiometer Precipitation/profiling (5min)
2AKu
Ku 3-D profile of precipitation (30min)
2AKa
Ka 3-D profile of precipitation (30min)
2ADPR
Dual-Frequency 3-D profile of precipitation (30min)
2BCMB
Level-2 DPR and GMI Combined (30min
3IMERGH*
I-MERG 30-minute (.1 x .1 grid) (early and Late)
•
1C for each contributing radiometer (size depending upon instrument)
• *
GPROF for each contributing radiometer (size depending upon instrument) A subset is also available as TIFF+WorldFile
Erich Franz Stocker - Page 6
GV International Workshop-Seoul Korea
May 12, 2015
Current Production Data Product Versions For Swath Products •
GMI – – – –
1A-V03B 1B/Base-V03C 1C-V03C GPROF-V03D
•
Partner radiometers – 1C MHS –V02B – 1C SSMIS-V02C (F16-F18) – 1C SSMIS –V03A (F19) – 1C AMSR2-V03C – 1C SAPHIR-V02B – GPROF MHS-V03C – GPROF SSMIS –V03C – GPROF AMSR2-V03D – GPROF SAPHIR-V03A
•
Radar – Ku - V03B – Ka - V03B – DPR – V03B
• Combined: V03D after Dec 2014 and V03C before Dec 2014 Erich Franz Stocker - Page 7
GV International Workshop-Seoul Korea
May 12, 2015
Level 3 Gridded Product Version
• All Level 3 at V03D Except – SAPHIR GPROF at V03A – Ku/Ka/DPR at V03C – Gridded Text product at V03A
Erich Franz Stocker - Page 8
GV International Workshop-Seoul Korea
May 12, 2015
Reprocessing Plans for GPM •
Currently the first “fully GPM” reprocessing of all mission data scheduled for September 28, 2015.
•
V04A will be the data product version for reprocessed data – Should see fewer letter version changes – JPST needs to approve whether a “changed” algorithm allowed to be inserted (this one of the ways letters change) – JPST determines whether a change is big enough to require reprocessing of the entire mission data stream back to March 2014
•
Algorithm development teams currently working on V04
•
JAXA has provided 1 year of changed 1B Ku/Ka which adjusts the calibration of Ku and Ka
•
L2 Radar development team working with this data
•
End of May stable L2 radar data to combined team
•
End of June stable combined data to radiometer team to build the databases
•
August GPM intercalibrated tables for partner 1C products (X-cal team)
•
August V04 data available for analysis and validation
•
Once GPROF algorithms validated for GPM period will go back and reprocess partner radiometer data to January 1998 using GPM algorithms
•
IMERG reprocessing starts 3 months AFTER the GPM mission era reprocessing starts
Erich Franz Stocker - Page 9
GV International Workshop-Seoul Korea
May 12, 2015
