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Proceedings Paper

Surface radiation budget in a subalpine lake using a combined modeling/remote sensing method
Author(s): Alessandro de Carli; Claudia Giardino; Eugenio Zilioli
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Paper Abstract

Four Landsat-5 Thematic Mapper (TM) images acquired between May 1996 and June 1998 were selected in order to define a procedure to compute the surface temperatures and the daily energy budgets of Lake Iseo, located in northern Italy. TM data were atmospherically corrected by using the radiative transfer code LOWTRAN 6 (Low Resolution Transmittance Code), and results in some locations were evaluated comparing satellite derived temperatures with in situ measurements collected simultaneously to the TM overpasses. The root mean square error (ESQM) between satellite and measured temperatures was lower than 1 degree Celsius. Then, a method combining modelled values of incoming short and longwave radiation, remotely sensed measurements of surface temperatures and albedo was used to retrieve the instantaneous surface radiation budget and the net radiation of the basin. Using hourly meteorological measurements and a model founded in literature the daily energy budget and its accuracy were finally evaluated and compared to reference values.

Paper Details

Date Published: 17 December 1999
PDF: 8 pages
Proc. SPIE 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, (17 December 1999); doi: 10.1117/12.373139
Show Author Affiliations
Alessandro de Carli, IRRS-CNR (Italy)
Claudia Giardino, IRRS-CNR (Italy)
Eugenio Zilioli, IRRS-CNR (Italy)

Published in SPIE Proceedings Vol. 3868:
Remote Sensing for Earth Science, Ocean, and Sea Ice Applications
Giovanna Cecchi; Edwin T. Engman; Eugenio Zilioli, Editor(s)

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