5th GOES Users' Conference


Comparison of atmospheric profiles from hyperspectral and multispectral IR radiances on depicting hurricane thermodynamic structures

Hong Qiu, CIMSS/Univ. of Wisconsin, Madison, WI; and J. Li, E. Weisz, and C. Y. Liu

An algorithm has been developed to retrieve atmospheric temperature and moisture vertical profiles from hyperspectral infrared (IR) alone radiances (Zhou et al. 2007; Weisz et al. 2007). This study demonstrates that hyperspectral IR satellite data alone can yield important information about hurricanes. Using this type of data, high vertical and spatial resolution moisture and temperature structures within hurricane eyes and their surrounding environment can be depicted. These measurements are useful in both clear and cloudy skies. On the other hand, multispectral IR radiances provide high spatial resolution but low vertical resolution profiles, which help depict the spatial features of the moisture distribution. Data from Moderate Resolution Imaging Spectroradiometer (MODIS) and Atmospheric Infrared Sounder (AIRS) onboard the Earth Observing System (EOS) Aqua platform are used to derive the high spatial resolution (from MODIS) and high vertical resolution (from AIRS) profiles for this hurricane study. The study demonstrates the great advantage of future geostationary hyperspectral IR instrument over the current GOES Sounder on providing three dimensional atmospheric temperature and water vapor with high temporal resolution. In addition, the combination of hyperspectral IR sounding and high spatial multispectral imaging data provides better depiction of hurricane thermodynamic structures. The hyperspectral IR sounding data with high temporal resolution will be very important for hurricane track and intensity forecasts.

Poster Session 1, Fifth GOES Users' Confererence Poster Session
Wednesday, 23 January 2008, 2:30 PM-4:00 PM, Exhibit Hall B

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