Updates to AMSR-E GPROF over Land Rain Algorithm & Applications to AMSR-2 Ralph Ferraro 1,2, Patrick...
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Updates to AMSR-E GPROF over Land Rain Algorithm & Applications to AMSR-2 Ralph Ferraro 1,2, Patrick Meyers 2, Nai-Yu Wang 2, Dave Randel 3, Chris Kummerow
Updates to AMSR-E GPROF over Land Rain Algorithm &
Applications to AMSR-2 Ralph Ferraro 1,2, Patrick Meyers 2, Nai-Yu
Wang 2, Dave Randel 3, Chris Kummerow 3 1 NOAA/NESDIS 2 Cooperative
Institute for Climate and Satellites (CICS), University of Maryland
College Park, MD 3 Cooperative Institute for Research in the
Atmosphere (CIRA) Colorado State University Fort Collins, CO AMSR-E
Science Team Meeting Oxnard, CA4-5 September 20131
Slide 2
2 Outline GPROF2010V2 AMSR-E TMI SSMIS Independent evaluations
AMSR-2 examples 4-5 September 2013AMSR-E Science Team Meeting
Oxnard, CA
Slide 3
3 Review of GPROF2010 Over Land Changes (N.Y. Wang) Driven by
TRMM V7 reprocessing Main focus of effort - make improvements over
V6 and develop synergy with PR V7 Previous TRMM versions were
always out of sync between TMI and PR TRMM 2A12 V7 = GPROF2010 What
was changed Improve Convective-Stratiform separation TB85V-RR
relationships to remove warm season bias More versatile/precise
land/ocean/coast (Dave Randel) Use of GPM X-Cal L1 TBs What was NOT
changed Regional biases IF-THEN-ELSE screening logic (Grody and
GSCAT heritage) End result closer agreement between TRMM V7 2A12
and 2A25 34-5 September 2013AMSR-E Science Team Meeting Oxnard,
CA
Slide 4
A TMI Example 4 Note the better gradient in the rain rates in
V7 compared to V6 and PR; V6 tended to smear rain areas due to
poorer CSI 4-5 September 2013AMSR-E Science Team Meeting Oxnard,
CA
Slide 5
GPROF2010 V2 (Meyers, Randel, Wang) Goal was to improve AMSR-E
from TMI version Beyond TRMM domain, snow becomes a major issue Can
we improve desert sand as well? Can we start to eliminate
IF-THEN-ELSE? (Goal of GPROF2014) Also, port to other sensors e.g.,
AMSR-2, SSMI/S Time series continuity for climate/blended products
(e.g., NASA/IMERG) Unbiased retrievals between AMSR-E, SSMI, SSMIS,
TMI, AMSR-2, Real-time user continuity (NOAA JPSS/GCOM effort)
Benchmark for GPM (GPROF2014) to improve upon What we wound up
doing: Use L1C from X-cal, but still some empirical adjustments to
TBs TMI vs. AMSR-E frequencies, etc. Same for AMSR-2, but not for
SSM/I and SSMIS Use of ancillary data sets - Monthly snow
climatology, Static desert mask Re-engineering of code Some changes
for coast definition, databases, etc. AMSR-E Science Team Meeting
Oxnard, CA4-5 September 20135
Slide 6
Example - Screening Problem Convective core screened out thinks
its snow on the ground 4-5 September 2013AMSR-E Science Team
Meeting Oxnard, CA6
Slide 7
Interactive Multisensor Snow and Ice Mapping System (IMS)
Northern Hemisphere Multisensor (AVHRR, SSM/I, GOES, AMSR-E) Human
in the loop Daily 24 km snow product 1997-present AMSR-E Monthly
Snow Product Southern Hemisphere L3 25km Snow Water Equivalent
Global 1/4 map of likelihood of snow coverage If (p > 75%), snow
likely, pixel flagged Climatological Snow Screening 74-5 September
2013AMSR-E Science Team Meeting Oxnard, CA
Slide 8
Climatological Snow Screening 4-5 September 2013AMSR-E Science
Team Meeting Oxnard, CA8
Slide 9
Climatological Desert Screening International
Geosphere/Biosphere Programme 1/12 scene types 4-5 September
2013AMSR-E Science Team Meeting Oxnard, CA9
Slide 10
GPROF2010V2 Land Screening 4-5 September 2013AMSR-E Science
Team Meeting Oxnard, CA10 New Old Now used less often
Slide 11
Putting it all together 4-5 September 2013AMSR-E Science Team
Meeting Oxnard, CA11
Slide 12
Example - Screening Problem Convective core screened out
Convective core intact 4-5 September 2013AMSR-E Science Team
Meeting Oxnard, CA12
Slide 13
Rain Rate January 2010 mmday -1 4-5 September 2013AMSR-E
Science Team Meeting Oxnard, CA13 AMSR-E GPROF2010 mmday -1 AMSR-E
GPROF2010V2 NEW - OLD More convective cores included Less due to
snow climatology
Slide 14
AMSR-E Monthly Rain July 2010 4-5 September 2013AMSR-E Science
Team Meeting Oxnard, CA14
Slide 15
Comparison to GPCP 4-5 September 2013AMSR-E Science Team
Meeting Oxnard, CA15
Slide 16
4-5 September 2013AMSR-E Science Team Meeting Oxnard, CA16
Comparison to GPCP 75% Snow Climo.
Slide 17
4-5 September 2013AMSR-E Science Team Meeting Oxnard, CA17
Comparison to GPCP
Slide 18
4-5 September 2013AMSR-E Science Team Meeting Oxnard, CA18
Comparison to GPCP
Slide 19
GPCC Gauge Comparisons: Jan Jun 2013 4-5 September 2013AMSR-E
Science Team Meeting Oxnard, CA19 GPCC Gauge (mm/mon) AMSR-2
(mm/mon) TMI (mm/mon) GPCC Gauge (mm/mon) SSMIS F18I (mm/mon) GPCC
Gauge (mm/mon) ALL SatelliteI (mm/mon)
Slide 20
AMSR-2 Teaming with CSU on recently selected NASA proposal for
continuity of AMSR-E time series with AMSR-2 NOAA is also using
AMSR-2 as part of JPSS program through separate arrangement with
JAXA Show some examples of AMSR-2 usage (P. Meyers) Super storm
Sandy Moore, OK Tornado Mid-Atlantic Tornado with rapid imagery and
lightning Matchups with TMI (R. Joyce) AMSR-E Science Team Meeting
Oxnard, CA4-5 September 201320
Slide 21
NEXRAD Reflectivity Super Storm Sandy October 2012 4-5
September 2013AMSR-E Science Team Meeting Oxnard, CA21
Slide 22
Moore, OK Tornado May 20, 2013 Agreement in locations of
heaviest precipitation 4-5 September 2013AMSR-E Science Team
Meeting Oxnard, CA22
Slide 23
NMQ-Q2 Validation Smoothed Reflectivities 4-5 September
2013AMSR-E Science Team Meeting Oxnard, CA23
Slide 24
Cross-Track TB Strong scattering in core of storm Negative
polarization at 89 GHz due to large hail? East/West gradient in low
frequency polarization suggests changes in soil moisture due to
rain 4-5 September 2013AMSR-E Science Team Meeting Oxnard,
CA24
Slide 25
Mid-Atlantic Severe Weather - 6/13/13 4-5 September 2013AMSR-E
Science Team Meeting Oxnard, CA25 1 minute GOES visible and DCLMA
Simulate GOES-R ABI and GLM Lightning jumps related to tornadic
storms GPROF AMSR-2 Rain Rates 1 second lighting from DCLMA
Lightning related to 89 GHz scattering
Slide 26
26 GCOM-W1 AMSR2 (top) derived precipitation (mm/hr) TRMM TMI
(bottom) 02:30-03:00 UTC 1 March 2013 Courtesy of Bob Joyce,
NOAA/NWS/NCEP/CPC 4-5 September 2013AMSR-E Science Team Meeting
Oxnard, CA26
Slide 27
27 GCOM-W1 AMSR2 (top) derived precipitation (mm/hr) TRMM TMI
(bottom) 04:00-04:30 UTC 1 March 2013 Courtesy of Bob Joyce,
NOAA/NWS/NCEP/CPC 4-5 September 2013AMSR-E Science Team Meeting
Oxnard, CA27
Slide 28
Summary and Future Plans GPROF2010V2 over land Essentially
produces unbiased estimates for TMI, AMSR-E, AMSR-2, SSM/I, SSMIS
Will allow for continuity from AMSR-E to AMSR-2 Being adopted at
NOAA as part of JPSS/GCOM EDRs Ready for AMSR-E reprocessing (if
not done already) Improved features include Uses snow and desert
climatologies Better CSI for improved rain rates GPROF 2014 in
development (GPM/CSU team) Eliminate empirical RR calculation over
land Identifies emissivity classes for Bayesian retrieval 4-5
September 2013AMSR-E Science Team Meeting Oxnard, CA28
Slide 29
Backup Slides 4-5 September 2013AMSR-E Science Team Meeting
Oxnard, CA29
Slide 30
Slide 31
Slide 32
Slide 33
Slide 34
GPROF VS Radar
Slide 35
Along-Track Tbs Scattering signature down to 18GHz Low
polarization differences at higher frequencies, as expected 4-5
September 2013AMSR-E Science Team Meeting Oxnard, CA35