NDLI: Retrieval of microwave surface emissivities using multi-sensor satellite remote sensing

Content Provider	IEEE Xplore Digital Library
Author	Al Jassar, H.K. Harris, A. Ridley, J.
Copyright Year	1995
Description	Author affiliation: Dept. of Space & Climate Phys., Univ. Coll. London, UK (Al Jassar, H.K.; Harris, A.; Ridley, J.)
Abstract	The retrieval of surface microwave emissivity can be subject to significant errors due to the contributions from atmospheric emission and absorption. These errors, which depend on both the surface microwave emissivity and atmospheric water vapour content, can be more than 0.1. The errors will affect the interpretation of the geophysical parameters based on the surface microwave emissivity, for example soil moisture, surface roughness and vegetation cover, which are of interest for global change studies and other applications. The authors present a new technique for correcting brightness temperature measurements and retrieving the microwave surface emissivity. The method uses simultaneous measurements from the ERS-1 microwave and infrared radiometers. Radiative transfer simulations using a microwave atmospheric model incorporating a North Atlantic range of atmospheres show that the surface microwave emissivity can be retrieved to an accuracy of 0.001 r.m.s. for atmospheres less than 2.5 gm/cm/sup -3/ in water vapour content. A validation study of the technique over the ocean is presented and possible sources of residual error are discussed.
Starting Page	1189
Ending Page	1191
File Size	340557
Page Count	3
File Format	PDF
ISBN	0780325672
DOI	10.1109/IGARSS.1995.521180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-07-10
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea surface Ocean temperature Rough surfaces Surface roughness Atmospheric measurements Microwave measurements Geophysical measurements Sea measurements Soil measurements Microwave theory and techniques
Content Type	Text
Resource Type	Article

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