Physical retrieval and imaging of sea-surface skin temperature from NAST-I: initial results

Details Physical retrieval and imaging of sea-surface skin temperature from NAST-I: initial results Physical retrieval and imaging of sea-surface skin temperature from NAST-I: initial results

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3756..511n&link_type=abstract

Proc. SPIE Vol. 3756, p. 511-518, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research III, A

Computer Science

Sound

Scientific paper

It is well known that a globally accurate, non-biased, satellite-derived sea surface temperature (SST) database has important applications in quantitative studies of the earth's atmosphere-ocean system. Current satellite SST retrieval algorithms do not provide the instantaneous accuracy of 0.3 K necessary for useful calculations of surface flux in climate modeling. The present study demonstrates the potential for utilizing high spectral resolution infrared radiance data toward the objective of improving global satellite-derived SSTs. The NPOESS aircraft sounder testbed interferometer (NAST-I), a newly developed experimental Fourier transform spectrometer, is employed here. This instrument is flown experimentally from high-altitude aircraft and is capable of cross-track scanning similar to that found on polar orbiting satellites; this unique scanning feature allows the possibility of accurate SST imaging. NAST-I data collected during the Wallops 1998 field campaign are used in a generalized physical multiwindow retrieval method. The combined technology and algorithm is anticipated to allow clear-sky imaging of SST with accuracy limited primarily by the noise and calibration errors of the instruments.

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