Cloud features detected by MODIS but not by CloudSat and CALIOP

The ability to characterize the global cloud cover from space has been greatly enhanced by the availability of MODIS, CloudSat, and CALIOP data. The three sensors provide good complementary information about clouds. In this study, we investigated unexpected observations of certain types of clouds ap...

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Main Authors: Chan, Mark Aaron, Comiso, Josefino C.
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Published: Animo Repository 2011
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Online Access:https://animorepository.dlsu.edu.ph/faculty_research/4128
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Institution: De La Salle University
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spelling oai:animorepository.dlsu.edu.ph:faculty_research-50032021-09-20T01:17:58Z Cloud features detected by MODIS but not by CloudSat and CALIOP Chan, Mark Aaron Comiso, Josefino C. The ability to characterize the global cloud cover from space has been greatly enhanced by the availability of MODIS, CloudSat, and CALIOP data. The three sensors provide good complementary information about clouds. In this study, we investigated unexpected observations of certain types of clouds apparent in the MODIS data but not detected by CloudSat and CALIOP. Several examples are presented and generally these undetected clouds are geometrically thin, low-level clouds. In particular, they are located in the Arctic region and have optical thicknesses of less than 14, top height altitudes of below 2.5km, and layer thickness of less than 1km. CloudSat may miss such low-level clouds because of its coarse vertical resolution of about 500m and it has limited sensitivity near the surface. Unexpectedly, CALIOP with a much higher vertical resolution of 30m also misses these clouds and this is due to the cloud's geometrically thin nature and surface proximity. Copyright 2011 by the American Geophysical Union. 2011-12-28T08:00:00Z text https://animorepository.dlsu.edu.ph/faculty_research/4128 info:doi/10.1029/2011GL050063 Faculty Research Work Animo Repository Radiometers Clouds Electromagnetics and Photonics
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
topic Radiometers
Clouds
Electromagnetics and Photonics
spellingShingle Radiometers
Clouds
Electromagnetics and Photonics
Chan, Mark Aaron
Comiso, Josefino C.
Cloud features detected by MODIS but not by CloudSat and CALIOP
description The ability to characterize the global cloud cover from space has been greatly enhanced by the availability of MODIS, CloudSat, and CALIOP data. The three sensors provide good complementary information about clouds. In this study, we investigated unexpected observations of certain types of clouds apparent in the MODIS data but not detected by CloudSat and CALIOP. Several examples are presented and generally these undetected clouds are geometrically thin, low-level clouds. In particular, they are located in the Arctic region and have optical thicknesses of less than 14, top height altitudes of below 2.5km, and layer thickness of less than 1km. CloudSat may miss such low-level clouds because of its coarse vertical resolution of about 500m and it has limited sensitivity near the surface. Unexpectedly, CALIOP with a much higher vertical resolution of 30m also misses these clouds and this is due to the cloud's geometrically thin nature and surface proximity. Copyright 2011 by the American Geophysical Union.
format text
author Chan, Mark Aaron
Comiso, Josefino C.
author_facet Chan, Mark Aaron
Comiso, Josefino C.
author_sort Chan, Mark Aaron
title Cloud features detected by MODIS but not by CloudSat and CALIOP
title_short Cloud features detected by MODIS but not by CloudSat and CALIOP
title_full Cloud features detected by MODIS but not by CloudSat and CALIOP
title_fullStr Cloud features detected by MODIS but not by CloudSat and CALIOP
title_full_unstemmed Cloud features detected by MODIS but not by CloudSat and CALIOP
title_sort cloud features detected by modis but not by cloudsat and caliop
publisher Animo Repository
publishDate 2011
url https://animorepository.dlsu.edu.ph/faculty_research/4128
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