infrared-derived atmospheric property validation w. feltz, t. schmit, j. nelson, s. wetzel-seeman,...
TRANSCRIPT
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INFRARED-DERIVED ATMOSPHERIC INFRARED-DERIVED ATMOSPHERIC PROPERTY VALIDATION PROPERTY VALIDATION
W. Feltz, T. Schmit, J. Nelson, S. Wetzel-Seeman,
J. Mecikalski and J. Hawkinson
3rd Annual MURI Workshop
University of Wisconsin CIMSS/SSEC
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OUTLINEOUTLINE
• Satellite Derived Product Overview
• Validation Efforts
• Overview of Satellite/Aircraft/Ground-based Infrared Thermodynamic Retrieval Products
• Summary and Future Efforts
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GOALGOAL
To evaluate quality of current satellite, aircraft and, groundbased infrared derived atmospheric properties such as stability and cloud products using latest in situ and remotely sensed meteorological validation data.
Then relate current IR-derived atmospheric products to future GIFTS retrieval products.
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Derived Products from IR DataDerived Products from IR Data• Total Precipitable Water Vapor (TPW)
Important for NWP assimilation and nowcasting
• Stability Indices
Lifted Index (LI) – measure of instability magnitude
Convective Available Potential Energy/ Convective Inihibition (CAPE/CIN) – amount of energy available
Functions of the average equivalent potential temperature within the PBL and temperature profile
Important for nowcasting convection
• Cloud Top Pressure
Important for NWP assimilation and short-term forecasting
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Validation of GOES/MODIS/AIRS and
GIFTS Atmospheric Products Using DOE ARM
Microwave Radiometer
MillimeterMicrowaveCloud Radar
RadiosondesRaman Lidar
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Satellite Derived Product ValidationSatellite Derived Product Validation
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Example of Validation of GOES-8 Sounder Hourly 3x3 TPW Validation Using ARM Microwave Radiometer (Black - MWR; Red - GOES TPW; Blue - ETA First Guess)
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Example of Near Realtime Validation of GOES-12 Sounder Hourly 3x3 TPW Validation Using ARM Microwave Radiometer
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VALIDATION OF GOES SOUNDER DERIVED PBL VALIDATION OF GOES SOUNDER DERIVED PBL EQUIVALENT POTENTIAL ENERGY AND LIEQUIVALENT POTENTIAL ENERGY AND LI
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GOES-11 1x1 IHOP DERIVED PRODUCTSGOES-11 1x1 IHOP DERIVED PRODUCTS
30 - minute SFOV Sounder and 5 - minute Imager30 - minute SFOV Sounder and 5 - minute Imager
Lifted Index
Total Precipitable Water
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GOESGOES MODISMODIS
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GOES vs MODIS Derived ProductsGOES vs MODIS Derived Products24 June 2002 TPW24 June 2002 TPW
MODIS
Temporal – twice daily
Spatial resolution – 1 km
GOES SounderTemporal resolution - Hourly
Spatial resolution – 10 km
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MODIS Derived Product ValidationMODIS Derived Product Validation24 June 2002 TPW24 June 2002 TPW
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Aircraft Derived Product Validation Aircraft Derived Product Validation
NASA DC-8
S-HIS
NASA PROTEUS
NAST-I
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NAST-I IHOP 9 June 2002 Total NAST-I IHOP 9 June 2002 Total Precipitable WaterPrecipitable Water
20 UTC
19 UTC
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IHOP S-HIS Retrieval ValidationIHOP S-HIS Retrieval Validation
S-HIS Water Vapor*NASA LaRC LASE DIAL Water Vapor*
* Courtesy of Rich Ferrare NASA LaRC and Paolo Antonelli CIMSS/SSEC
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Groundbased Derived Product ValidationGroundbased Derived Product Validation
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AERI SPECIFICATIONSAERI SPECIFICATIONS
• Spectral Resolution better than 1 cm-1 wavenumber from 520-3000 cm-1 (3 - 20 um)
• Calibrated to 1% ambient radiance (better than 1 K ambient temperature)
• Automated and environmentally hardened• Time resolution: 6 - 10 minutes (adjustable)• Ground-based and portable
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AERI SYSTEMS AROUND THE WORLD
UW AERI - 2 (AERIBAGO, SSEC)
DOE AERI - 8 (Kansas/Oklahoma, Alaska, S. Pacific)
U-Miami M-AERI - 3 (Florida)
Bomem AERI - 6 (Italy, California, Maryland, Canada)
U Idaho P-AERI - 1 (Antarctica)
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AERI CHANNEL RETRIEVAL SPECTRAL REGIONS
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DOE ARM SGP AERI LOCATIONS
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AERIplus Cross Section ExamplesAERIplus Cross Section Examples
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AERIplus and Radiosonde ComparisonsAERIplus and Radiosonde Comparisons
Vici Lamont
Hillsboro
Purcell
Morris
3 June 0230 UTC
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AERI
West – East AERI water vapor cross sections
for IHOP
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AERI Retrieved IHOP water vapor time height cross sections from 12 AERI Retrieved IHOP water vapor time height cross sections from 12 June 2002 indicating rapid water vapor oscillations also indicated by June 2002 indicating rapid water vapor oscillations also indicated by GPS retrieved integrated water vaporGPS retrieved integrated water vapor
Total Precipitable Water
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IHOP AERIplus Retrieval RMS StatisticsIHOP AERIplus Retrieval RMS Statistics
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IHOP AERIplus Retrieval RMS StatisticsIHOP AERIplus Retrieval RMS Statistics
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AERI VS RADIOSONDE 100 MB SURFACE PARCEL ENERGY AND LIFTED INDEX
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Real-time RetrievalsReal-time RetrievalsSix AERI systems (including MSN) are currently processing PBL retrievals in near real-time, allowing “on the fly” validation:
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Continue to assess GOES and MODIS meteorological derived products with DOE ARM data in near realtime
Study precursors of convective initiation from AERI/NAST-I/S-HIS retrievals during IHOP and THORPEX
Evaluate AIRS derived stability products once available
Use DOE ARM Tropical Western Pacific site at Nauru and Manus Islands in South Pacific to evaluate GOES-9, MODIS, and AIRS retrieved products
Future Research PlansFuture Research Plans