Synergistic use of optical and microwave data in agrometeorological applications

Details Synergistic use of optical and microwave data in agrometeorological applications Synergistic use of optical and microwave data in agrometeorological applications

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..239m&link_type=abstract

Advances in Space Research, Volume 13, Issue 5, p. 239-248.

Physics

1

Scientific paper

Remotely sensed optical and microwave data can be synergistically used to infer land surface properties. Optical data can be used to estimate surface albedo, radiation absorption by vegetation canopies and their photosynthetic efficiencies. Vegetation canopy reflectance at red and near-infrared wavelengths can be used to correct for vegetation effect on microwave emissivities at low frequencies for estimating soil moisture. Optical data can also provide information about surface and air temperatures, precipitable water vapor, cloud top temperature and its water content. This information can be utilized to correct microwave data for atmospheric effects. These points are illustrated with theoretical analyses and by application to satellite data. The basic physical mechanisms operative at the various wavelengths are also discussed.

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