NDLI: Cloud top pressure retrieval from measurements within the O/sub 2/-A band with the satellite imaging sensor MERIS

Content Provider	IEEE Xplore Digital Library
Author	Preusker, R. Schuller, L. Fischer, J.
Copyright Year	1999
Description	Author affiliation: Inst. fur Weltraumwissenschaften, Freie Univ. Berlin, Germany (Preusker, R.)
Abstract	In the near future, global coverage space-borne measurements within the absorption band of oxygen at 761 nm (O/sub 2/-A band) with an imaging spectrometer of medium spatial resolution will become available through ESA's Medium Resolution Imaging Spectrometer (MERIS) on ENVISAT. In a cloudy atmosphere, the radiance ratio between an absorbing channel and a window channel is directly related to the averaged photon path length which is mainly determined by the cloud top pressure (ctp). Artificial neural network training has been used to invert the results of radiative transfer simulations. This paper presents the principles of the retrieval scheme, an error and sensitivity analysis to specify the influence of viewing geometry, surface reflection, cloud optical thickness and cloud type on the performance of the algorithm.
Starting Page	143
Ending Page	145
File Size	523586
Page Count	3
File Format	PDF
ISBN	0780352076
DOI	10.1109/IGARSS.1999.773428
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-06-28
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Clouds Pressure measurement MERIS Atmospheric measurements Absorption Optical imaging Spatial resolution Atmosphere Artificial neural networks Atmospheric modeling
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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