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Proceedings Paper

Remote sensing of global surface shortwave radiation and PAR over the ocean
Author(s): Catherine H. Gautier; Michael L. Byers
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Paper Abstract

During the past few years many methods have been proposed for estimating surface radiative fluxes (shortwave radiation, photosynthetically active radiation -- PAR) from satellite observations. We have developed algorithms for computing the shortwave radiative flux (shortwave irradiance) at the ocean surface from visible radiance observations and they have been found to be quite successful under most atmospheric and cloud conditions. For broken clouds, however, the simple plane parallel assumption for solving the radiative transfer equations may need to be corrected to account for cloud geometry. The estimation of PAR is simpler because the most commonly used satellite radiance measurements cover a similar region of the solar spectrum. We are in the process of producing global $ARDNSW and PAR as a contribution to the Sequoia 2000 project (to implement a distributed processing system designed for the needs of global change researchers). Results from our algorithms developed for Sequoia and preliminary global surface solar irradiance and PAR fields are presented and discussed.

Paper Details

Date Published: 22 December 1992
PDF: 14 pages
Proc. SPIE 1749, Optics of the Air-Sea Interface: Theory and Measurement, (22 December 1992); doi: 10.1117/12.138847
Show Author Affiliations
Catherine H. Gautier, Univ. of California/Santa Barbara (United States)
Michael L. Byers, Santa Barbara Research Ctr. (United States)


Published in SPIE Proceedings Vol. 1749:
Optics of the Air-Sea Interface: Theory and Measurement
Leland Estep, Editor(s)

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