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Record Details

Record 69 of 350
Nimbus 7 CZCS - Reduction of its radiometric sensitivity with time
Author and Affiliation:
Gordon, H. R.(Miami Univ., Coral Gables, FL, United States)
Brown, J. W.(Miami University, Coral Gables, FL, United States)
Brown, O. B.(Miami Univ., Coral Gables, FL, United States)
Evans, R. H.(Miami University, Miami, FL, United States)
Clark, D. K.(NOAA, National Environmental Satellite, Data, and Information Service, Washington, DC, United States)
Abstract: Preliminary results are described for an effort to quantify the sensitivity decay of a radiometry sensor (the Coastal Zone Color Scanner or CZCS aboard Nimbus 7). The method used in the study is to (1) compute the water-leaving radiance for imagery acquired in regions where this radiance is known or can be independently estimated, and (2) adjust the sensor calibration to force agreement between the two radiances. Decay factors for orbit numbers from 0 to 20,000 are plotted, and surface and space measurements are compared for the Gulf Stream and the Northern Sargasso Sea at different seasons. The fact that a seasonal variability in the chlorophyll a concentration in the Sargasso Sea was found in the sensor analysis (apparently the first such satellite observation) increases confidence in the method.
Publication Date: Dec 15, 1983
Document ID:
19840035415
(Acquired Nov 28, 1995)
Accession Number: 84A18202
Subject Category: SPACECRAFT INSTRUMENTATION
Document Type: Journal Article
Publication Information: Applied Optics (ISSN 0003-6935); 22; 3929-393
Publisher Information: United States
Contract/Grant/Task Num: NAS5-22963
Financial Sponsor: NASA; United States
Organization Source: Miami Univ.; Coral Gables, FL, United States
Miami Univ.; FL, United States
National Oceanic and Atmospheric Administration; Washington, DC, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COASTAL ZONE COLOR SCANNER; NIMBUS 7 SATELLITE; REMOTE SENSORS; SENSITIVITY; CALIBRATING; DEGRADATION; RADIANCE; TIME RESPONSE
Imprint And Other Notes: Applied Optics (ISSN 0003-6935), vol. 22, Dec. 15, 1983, p. 3929-3931.
Availability Source: Other Sources
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