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Proceedings Paper

Statistics of Alaskan clouds from the Infrared Cloud Imager (ICI)
Author(s): Joseph A. Shaw; Brentha Thurairajah
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Paper Abstract

The Infrared Cloud Imager (ICI) is a ground-based infrared thermal imaging system used to identify and classify clouds based on the downwelling atmospheric radiance in the 8-14 μm wavelength region. Data obtained during a deployment in Barrow, Alaska during February - May 2002 has been combined with radiosonde and microwave radiometer data to calculate spatial cloud statistics for the months of March and April 2002. The results show a general trend of increasing cloudiness during this period, and a short transition time between clear and cloudy skies. A comparison of cloud statistics computed from the full ICI images with statistics computed from a single ICI pixel suggest that a point sensor would underestimate cloudiness during this data period.

Paper Details

Date Published: 3 November 2003
PDF: 6 pages
Proc. SPIE 5157, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research V, (3 November 2003); doi: 10.1117/12.508605
Show Author Affiliations
Joseph A. Shaw, Montana State Univ. (United States)
Brentha Thurairajah, Montana State Univ. (United States)


Published in SPIE Proceedings Vol. 5157:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research V
Allen M. Larar; Joseph A. Shaw; Zhaobo Sun, Editor(s)

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