Derivation of precipitable water from METEOR and NOAA infrared window measurements

This presentation describes the procedures for inferring the precipitable water content (PW) from cloud free infrared radiance observations in the atmospheric window 10.5 – 12.5 μm provided by the METEOR - 3 instrument (single channel) and by the NOAA radiometer AVHRR (two split-window channels). Tw...

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Bibliographic Details
Published in:Advances in space research 1996, Vol.18 (7), p.17-20
Main Authors: Uspensky, A.B., Scherbina, G.I.
Format: Article
Language:English
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Summary:This presentation describes the procedures for inferring the precipitable water content (PW) from cloud free infrared radiance observations in the atmospheric window 10.5 – 12.5 μm provided by the METEOR - 3 instrument (single channel) and by the NOAA radiometer AVHRR (two split-window channels). Two types of algorithms for PW retrieval over sea from both kinds of satellite data have been proposed. The first algorithm utilizes the parametric model of satellite measurements and best linear estimator; the second one is based on statistical regression. Verification of remote sensed PW against collocated analysis data gives RMS errors in the range 0.55 – 0.70 cm (0.54 – 0.62 cm) for single - channel (two - channel) methods. The problem of PW retrieval over land with varying surface temperatures and emissivities is under discussion.
ISSN:0273-1177
1879-1948
DOI:10.1016/0273-1177(95)00283-9