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Proceedings Paper

Determination of outgoing longwave radiation and its diurnal variation using ERBE and Meteosat observations
Author(s): Robert S. Kandel; F. Cheruy; Jean-Philippe Duvel
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Paper Abstract

The outgoing longwave radiation is an indicator of the overall state of the Earthatmosphere system and its diurnal variation reveals how the system responds to the solar diurnal forcing. The Earth Radiation Budget Experiment (ERBE) is the first attempt to use a multi-satellite system to obtain improved time sampling necessary for determining diurnal variation. We have used 3-hourly Meteosat data to improve the time sampling still further as compared to the four observations per 24 hours obtained during most of the ERBE lifetime. Regression techniques and radiative transfer calculations allow us to convert the relatively narrow-band Meteosat infrared window (IRW: 11 pm) and " water vapor" (WV: 6. 3 m) channel data into estimates of broad-band longwave (LW) radiant exitances. We compare the diurnal variations obtained from these data with the ERBE diurnal cycle estimates. Results show that the ERBE diurnal modelling algorithms generally perform very well and that most of the discrepancies that are observed would not have occurred if the system had been complete with scanners functioning together on 3 satellites as originally planned. 1.

Paper Details

Date Published: 1 September 1990
PDF: 10 pages
Proc. SPIE 1299, Long-Term Monitoring of the Earth's Radiation Budget, (1 September 1990); doi: 10.1117/12.21382
Show Author Affiliations
Robert S. Kandel, Lab. de Meteorologie Dynamique/CNRS (France)
F. Cheruy, Lab. de Meteorologie Dynamique/CNRS (France)
Jean-Philippe Duvel, Lab. de Meteorologie Dynamique/CNRS (France)

Published in SPIE Proceedings Vol. 1299:
Long-Term Monitoring of the Earth's Radiation Budget
Bruce R. Barkstrom, Editor(s)

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