TY - JOUR
T1 - A precaution regarding cirrus cloud detection from airborne imaging spectrometer data using the 1.38 μm water vapor band
AU - Ben-Dor, E.
N1 - Funding Information:
The author is grateful to Dr. J. Boardman from CSES, University of Colorado for providing the A VIRIS and the DEM data and for his help in running the registration process, and to Mr. A. T. Shapiro for his programming assistance. The author also wishes to thank the reviewer for his helpful comments. This work was partially supported by the Cooperative Institute for Research in the Environmental Sciences of the University of Colorado at Boulder through a Visiting Fellowship.
PY - 1994/12
Y1 - 1994/12
N2 - A case study that shows a malfunction of the water vapor channel at 1.38 μm to detect cirrus clouds is presented in this article. A combination of elevation, vegetation coverage, water vapor content, and albedo characteristics (mostly governed by the terrain) are the major factors affecting cirrus cloud detection. Using the criteria of relative low radiance and high signal-to-noise ratio amongst several targets and across the 1.84-1.92 μm spectral region, the 1.8489-μm channel was found to more effectively mask ground signals than the 1.3827-μm channel. Over targets having moderate elevation, dry conditions, minimal vegetation, and high albedos, both spectra regions present significant ground signals that can mistakenly be attributed to cirrus cloud particles. It is strongly recommended that for accurate cirrus cloud detection, both spectral regions around 1.38 μm and 1.88 μm be examined along with the above-mentioned factors.
AB - A case study that shows a malfunction of the water vapor channel at 1.38 μm to detect cirrus clouds is presented in this article. A combination of elevation, vegetation coverage, water vapor content, and albedo characteristics (mostly governed by the terrain) are the major factors affecting cirrus cloud detection. Using the criteria of relative low radiance and high signal-to-noise ratio amongst several targets and across the 1.84-1.92 μm spectral region, the 1.8489-μm channel was found to more effectively mask ground signals than the 1.3827-μm channel. Over targets having moderate elevation, dry conditions, minimal vegetation, and high albedos, both spectra regions present significant ground signals that can mistakenly be attributed to cirrus cloud particles. It is strongly recommended that for accurate cirrus cloud detection, both spectral regions around 1.38 μm and 1.88 μm be examined along with the above-mentioned factors.
UR - https://www.scopus.com/pages/publications/0028669095
U2 - 10.1016/0034-4257(94)90084-1
DO - 10.1016/0034-4257(94)90084-1
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AN - SCOPUS:0028669095
SN - 0034-4257
VL - 50
SP - 346
EP - 350
JO - Remote Sensing of Environment
JF - Remote Sensing of Environment
IS - 3
ER -