Multispectral remote sensing contribution to land surface evaporationThe global water cycle is perhaps the most important of all the biogeochemical cycles and evaporation, which is a significant component of the water cycle, is also linked with the energy and carbon cycles. Long-term evaporation over large areas has generally been computed as the difference of precipitation and river runoff. Analysis of short-term evaporation rate and its spatial pattern, however, is extremely complex, and multispectral remotely sensed data could aid in such analysis. Multispectral data considered here are visible and near-infrared reflectances, infrared surface temperature and the 37 GHz brightness temperatures. These observations are found to be not totally independent of each other. A few of their relationships are established and discussed considering physically-based models.
Document ID
19910052081
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Choudhury, B. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)