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Proceedings Paper

Improved cloud detection in AVHRR daytime and nighttime scenes over the ocean
Author(s): James Simpson; T. McIntire; J. Stitt; Gary Hufford
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Paper Abstract

Accurate cloud detection is needed for many geophysical applications. Unfortunately, a significant source of residual error in such satellite-based products is undetected cloud. Here, a new computationally efficient cloud detection procedure for both daytime and nightime Advanced Very High Resolution Radiometer data is developed. It differs substantially from out prior related work. First, a new clustering procedure is used which produces very homogeneous and distinct clusters. Second, the input information vector is reduced in size, incorporates both radiance and spatial components and each components is normalized. Third, the enhanced performance makes possible the use of a multipass procedure which is very effective in identifying the complex multilayer cloud structures common in satellite data. Validation with independent lidar observations confirms the accuracy of the new procedure. Marine low stratiform clouds also are detected effectively.

Paper Details

Date Published: 31 January 2001
PDF: 8 pages
Proc. SPIE 4168, Remote Sensing of Clouds and the Atmosphere V, (31 January 2001); doi: 10.1117/12.413879
Show Author Affiliations
James Simpson, Scripps Institution of Oceanography (United States)
T. McIntire, Scripps Institution of Oceanography (United States)
J. Stitt, Scripps Institution of Oceanography (United States)
Gary Hufford, U.S. National Weather Service (United States)


Published in SPIE Proceedings Vol. 4168:
Remote Sensing of Clouds and the Atmosphere V
Jaqueline E. Russell; Klaus Schaefer; Olga Lado-Bordowsky, Editor(s)

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