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The HRD Hurricane Field Program—2006 and 2007

John Gamache, Jason Dunion, Joe Cione and Eric Uhlhorn (john.gamache@noaa.gov) Hurricane Research Division, Atlantic Oceanographic and Meteorological Laboratory Miami, Florida

During the 2006 Hurricane Season, the Hurricane Research Division flew on missions in Tropical Cyclones Debby, Ernesto, and Helene. The G-IV and P-3 flights in Debby and Helene were either Saharan Air Layer Experiment (SALEX) flights or Ocean Winds Experiments. The P-3 flights in Ernesto were Stepped Frequency Microwave Radiometer(SFMR)/Three Dimensional Doppler Winds flights in support of the Tropical Prediction Center (TPC) and the Environmental Modeling Center (EMC).

Two G-IV only SALEX flights were conducted on 25 and September in Debby.

The two flights in Ernesto, on 29 and 31 August 2006 were tasked by joint decision of TPC and EMC. Both flights were within hours of landfall, and were specifically in support of operational determination of surface winds from the SFMR (flight-level data and several airborne Doppler wind analyses were also relayed TPC). Automatically quality controlled Doppler radial observations were also recorded for later use in assimilation development of the Hurricane Weather and Research and Forecasting model, currently being readied for operations in 2007. A mapping of the ocean temperature field by Airborne Expendable Bathythermographs under Ernesto was accomplished during the flight on 31 August.

HRD also participated on 4 Hurricane-Helene (17-20 September 2006,) P-3 research flights tasked either by HRD or the Marine Observing Systems Team of the Office of Research and Applications of NESDIS (National Environmental Satellite, Data, and Information Service), as well as four G-IV SALEX research flights on 15, 16, 18, and 20 September. The primary mission of the P-3s on 18 and 20 September were SALEX, while the primary missions on 17 and 19 September were the NESDIS Ocean Winds experiment designed for scatterometer calibration.

Finally, HRD scientists participated in some G-IV synoptic surveillance flights tasked by TPC. On these flights they assisted in the editing of GPS dropsonde data for assimilation in hurricane forecast models.

During the talk (or on the poster) we will discuss preliminary analyses or findings from the 2006 missions and will discuss the P-3 and aerosonde flight strategies for 2007. HRD’s primary focus in 2007 will be in assisting NCEP operations, particularly in its development of airborne-Doppler radar-data assimilation.

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