Thermal infrared propagation across the surf-influenced marine atmospheric boundary layer

Rowena M. Carlson; David B. Law; Christina J. Csanadi; Gerald D. Edwards; Ronald M. Tong

doi:10.1117/12.283900

23 September 1997 Thermal infrared propagation across the surf-influenced marine atmospheric boundary layer

Rowena M. Carlson, David B. Law, Christina J. Csanadi, Gerald D. Edwards, Ronald M. Tong

Author Affiliations +

Proceedings Volume 3125, Propagation and Imaging through the Atmosphere; (1997) https://doi.org/10.1117/12.283900
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Thermal infrared propagation data has been collected across the surf influenced marine atmospheric boundary layer as a part of the Electro-Optical Propagation in a Coastal Environment (EOPACE) surf zone experiment. This data was collected at Scripps Pier, La Jolla, California in January-February 1996. Preliminary analysis shows that the changes in transmittance are highly correlated with changes in bulk environmental parameters such as wind speed and direction, humidity, and marine haze. The effect of wave height is unclear from this preliminary analysis. An unexpected result was the up to 30% drop in transmission measured during the transition period when the wind speed drops and the air mass flow changes direction. This change occurs in the evening when the wind changes direction from onshore to offshore and in the morning when the wind changes from offshore to onshore. A similar drop in transmittance was not found under any other conditions. This is possibly due to the topography of the site with the steep hill rising up from the beach. The onshore-offshore flow may be very much influenced by this land form.

Citation Download Citation

Rowena M. Carlson, David B. Law, Christina J. Csanadi, Gerald D. Edwards, and Ronald M. Tong "Thermal infrared propagation across the surf-influenced marine atmospheric boundary layer", Proc. SPIE 3125, Propagation and Imaging through the Atmosphere, (23 September 1997); https://doi.org/10.1117/12.283900

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