TU4.L10 - ASSESSMENT OF ASCAT HIGH WIND RETRIEVALS WITHIN EXTRATROPICAL CYCLONES AT NOAA OCEAN PREDICTION CENTER
1. Assessment of ASCAT High Wind Retrievals within Extratropical Cyclones at NOAA Ocean Prediction Center Khalil A. Ahmad NOAA/NESDIS/StAR – Dell Perot Systems Zorana Jelenak 1 , Joseph Sienkiewicz 2 , and Paul Chang 1 1 NOAA/NESDIS/StAR 2 NOAA/NWS/NCEP/OPC 2010 IEEE International Geoscience and Remote Sensing Symposiom 25 - 30 July 2010 Honolulu, HI
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3. HF Extratropical Cyclone Intense, non-tropical cyclones with hurricane force winds Feb 09, 2007, North Atlantic kts
7. ASCAT vs. QuikSCAT Wind speeds (Extratropical Cyclones) New ASCAT QuikSCAT
8. Operational ASCAT wind product detects STORM force wind. One wind warning category lower than the actual winds. North Atlantic Extratropical Storm Example New ASCAT Operational ASCAT QuikSCAT QuikSCAT & New ASCAT wind products detects HF wind. kts
9. North Pacific Extratropical Storm Example QuikSCAT data reveals an area of HURRICANE force winds Operational ASCAT wind product detects only GALE force wind. Two wind warning categories lower than the actual winds. New ASCAT wind product detects STORM force wind. One warning category lower New ASCAT Operational ASCAT QuikSCAT kts
10. North Pacific Extratropical Storm Example QuikSCAT data reveals an area of HURRICANE force winds Operational GFS wind product detects only GALE force wind. Two wind warning categories lower than the actual winds. New ASCAT wind product detects STORM force wind. One warning category lower New ASCAT Operational GFS QuikSCAT kts
11. HF Extratropical Cyclone Database Surface Analysis Storm ID Date Lat Lon Type Pres Surface Analysis Storm track PAC011007 2007100712 43.93 -169.72 1013 L PAC011007 2007100718 43.23 -164.06 1010 G PAC011008 2007100800 42.37 -158.38 1010 G PAC011008 2007100806 41.33 -152.07 1007 G PAC011008 2007100812 39.87 -143.82 998 S PAC011008 2007100818 40.76 -137.83 974 S PAC011009 2007100900 43.15 -134.94 970 H PAC011009 2007100906 44.46 -134.08 964 H PAC011009 2007100912 46.45 -132.94 966 H PAC011009 2007100918 47.51 -132.81 968 H PAC011010 2007101000 48.90 -132.36 967 S PAC011010 2007101006 50.65 -132.3 964 S PAC011010 2007101012 52.17 -132.36 975 G PAC011010 2007101018 53.67 -131.68 977 G
24. New ASCAT Sonde Wind Speed 28.8m/s SFMR 28m/s New ASCAT 25m/s
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27. The nadir gaps increase the frequency at which ASCAT data do not sample or only partially sample weather systems of interest. ASCAT QuikSCAT QuikSCAT continuous swaths provide more coverage ASCAT vs. QuikSCAT Coverage ( Oct’07 ~ May’08 )
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