Thermodynamic and cloud parameter retrieval using infrared spectral data

Details Thermodynamic and cloud parameter retrieval using infrared spectral data Thermodynamic and cloud parameter retrieval using infrared spectral data

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3215805z&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 15, CiteID L15805

Physics

Optics

9

Atmospheric Composition And Structure: Cloud Optics, Atmospheric Composition And Structure: General Or Miscellaneous, Global Change: Atmosphere (0315, 0325), Geodesy And Gravity: Atmosphere Monitoring With Geodetic Techniques (6952)

Scientific paper

High-resolution infrared radiance spectra obtained from near nadir observations provide atmospheric, surface, and cloud property information. A fast radiative transfer model, including cloud effects, is used for atmospheric profile and cloud parameter retrieval. The retrieval algorithm is presented along with its application to recent field experiment data from the NPOESS Airborne Sounder Testbed - Interferometer (NAST-I). The retrieval accuracy dependence on cloud properties is discussed. It is shown that relatively accurate temperature and moisture retrievals can be achieved below optically thin clouds. For optically thick clouds, accurate temperature and moisture profiles down to cloud top level are obtained. For both optically thin and thick cloud situations, the cloud top height can be retrieved with an accuracy of approximately 1.0 km. Preliminary NAST-I retrieval results from the recent Atlantic-THORPEX Regional Campaign (ATReC) are presented and compared with coincident observations obtained from dropsondes and the nadir-pointing Cloud Physics Lidar (CPL).

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