Download - AMSR-E Ocean Rainfall Algorithm Status
AMSR-E Ocean RainfallAlgorithm Status
AMSR-E Science Team MeetingAsheville, NC27-28 June, 2011
C. KummerowColorado State University
~ 10 km
TB observed
TB model #1
TB model #2
TB model #3
Bayesian Inversion
~10 km
TB observed
TB model #3
TB model #2
TB model #1
Cloud Resolving Model Database
)|()()|( RTRTR bb PPP ×∝
TRMM PR/TMI & Model Database
GPROF_2008GPROF_2010
GPROF_2004
GPROF2010 continues to be a Bayesian algorithm consisting of:
P(R|Tb) = P(Tb|R)•P(R)/P(Tb)
No more rain screens. All pixels are compared to database. Bayes’ theorem determines rain or no rain. Consequence: almost all pixels have a very small probability of rain.
No more convective/stratiform separation. Only necessary because CRM database was skewed to convective pixels. Entire code is now exceedingly simple.
Pixels are classified only by background SST and TPW. Database entries within ±1K in SST and ±2 mm in TPW are searched for potential solutions. Error covariances are established from fit between observed and simulated Tb in the a-priori database.
GPROF 2010 (Ocean)
Cloud profile database is partitioned into separate SST and TPW bins
GPROF 2010 Status
• Databases created based upon PR/TMI. Change from GPROF 2008 to GPROF 2010 is TRMM V7 products.
• Delivered TMI V7 to PPS in mid-June
• In house version of AMSR-E code tested for 6 mo. Further testing expected in July 2011
• Ready to work with MSFC starting in August to get code into operations
• Need team discussion on output parameters. Currently, pixel level output is only Lat/Lon/Sfc rain/Conv. Rain.
Pre-Processors
TMI_L1CTMI_1B11AME_L1BAME_L2ASSMI_L1C
GPROF10 input file
Spacecraft position Pixel Location Pixel Time, Tbs, EIA
Elevation Land masks Sea Surface Temp Clustered Profiles
GPROF2010
Native Binary Output
Land - All Coast – SSM/I Ocean - Each Sensor
HDF HDF-EOS
NetCDF
Profile Databases Ancillary Datasets
Format Converter*
Sensor Data
Temporary Files
Programs
Input Data
Output Files
SST directory spec Ancillary dir spec Sat, Sensor Info Channel Freqs, Errs Profile dbase names
Ancillary Info
GPROF 2010 Processing Algorithm
GPROF 2010 Complete Parameter List
Orbit Header
SatelliteSensorAlgorithm VersionPre Processor VersionOceanDatabaseLand DatabaseOriginal fileStructure FlagStart DateCreation DateGranuleHgt Layer Top(28)Missing DataN scansN PixelsN layersN speciesN clustersNHgt Indicies
Scan Header
ScanDateSpaceCraft LatSpaceCraft LonSpaceCraft Altitude
Pixel Data
Latitude, LongitudePixel Status, Surface Type, Quality FlagLand Ambiguous Flag, Screen FlagOcean ExtendedDbase, SearchRadius Freezing Height Index ChiSquared Probability Of Precip Sun Glint AngleFreezing HeightCluster Number(nspecies) Cluster Scale(nspecies)Surface Precipitation (Liquid+ Frozen)Convective PrecipitationSurface Rain Cloud Water PathRain Water PathIce Water Path Sea Surface TemperatureTotal Precipitable WaterWind Speed
Hydro-MeteorAnd LH Profiles
Cloud WaterRain WaterCloud IceSnow WaterGraupelLatent Heating
TMI
Jan 2007
AMSR-E
GPROF 2010 TMI/AMSR-E Coincident matchups
Jan – Dec. 2007 accumulations
TMI
Jan 2007
AMSR-E
TMI
Jan 2007AMSR-E
SSMI F13
For 2007: F13 F14 F15 AMSR-EEquatorial Crossing times 18:30 18:00 20:30 13:30
Jan 2007
Jan 2007
GPROF 2010 Surface Precipitation (Liquid+Frozen)
Jan 2007
GPROF 2010 Convective Rain
Jan 2007
GPROF 2010 Probability of Precipitation
Jan 2007
GPROF 2010 Cloud Water Path
Jan 2007
GPROF 2010 Rain Water Path
Jan 2007
GPROF 2010 Ice Water Path
Jan 2007
GPROF 2010 Freezing Height
Jan 2007
GPROF 2010 Sea Surface Temperature
Jan 2007
GPROF 2010 Total Precipitable Water
Jan 2007
GPROF 2010 Wind Speed
Jan 2007
GPROF 2010 Surface Type
Jan 1st, 2007
GPROF 2010 Quality Flag0 = Best Quality1 = Sun-glint, Bayesian Expansion, Coastal contamination, database expanding2 = Ambiguous over Land
GPROF 2010 Complete Parameter List
Orbit Header
SatelliteSensorAlgorithm VersionPre Processor VersionOceanDatabaseLand DatabaseOriginal fileStructure FlagStart DateCreation DateGranuleHgt Layer Top(28)Missing DataN scansN PixelsN layersN speciesN clustersNHgt Indicies
Scan Header
ScanDateSpaceCraft LatSpaceCraft LonSpaceCraft Altitude
Pixel Data
Latitude, LongitudePixel Status, Surface Type, Quality FlagLand Ambiguous Flag, Screen FlagOcean ExtendedDbase, SearchRadius Freezing Height Index ChiSquared Probability Of Precip Sun Glint AngleFreezing HeightCluster Number(nspecies) Cluster Scale(nspecies)Surface Precipitation (Liquid+ Frozen)Convective PrecipitationSurface Rain Cloud Water PathRain Water PathIce Water Path Sea Surface TemperatureTotal Precipitable WaterWind Speed
Hydro-MeteorAnd LH Profiles
Cloud WaterRain WaterCloud IceSnow WaterGraupelLatent Heating
GPROF 2008
+ TRMM radar
GPROF 2008
Hurricane FloydSeptember 13, 1999
GPROF 2008 example
GPROF2008
Hurricane Floyd Sep 3, 1999 TMI Algorithm Comparison 0.25 x 0.25 gridded
1.28 mm/day
RSS
GSmap
0.96 mm/day
0.99 mm/day