DocumentCode :
297876
Title :
Spatial and temporal trends in land surface moisture and temperature observable using data from the Nimbus-7 microwave radiometer
Author :
Njoku, Eni G. ; Rague, Brian W.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Volume :
2
fYear :
1996
fDate :
27-31 May 1996
Firstpage :
1054
Abstract :
Nimbus-7 SMMR brightness temperatures have been reprocessed in a form that simplifies the data handling associated with estimation and analysis of global land parameter fields. Spatial and temporal analyses of the brightness temperatures indicate their sensitivities to land surface and atmospheric conditions, and show trends linked to changing surface moisture, temperature, and vegetation patterns. An estimation algorithm is used, calibrated to sites in arid regions and forests, to obtain preliminary estimates of the land parameters for a given geographic region focusing on semiarid areas were the potential for observing moisture variability using the SMMR channels is greatest, the estimates are compared with model output data. Results of the study are helpful in evaluating the potential of future L-band spaceborne radiometer measurements, which would have greatly increased capability for surface moisture estimation if available
Keywords :
UHF measurement; geophysical techniques; hydrological techniques; microwave measurement; moisture measurement; radiometry; remote sensing; soil; L-band; Nimbus-7; SHF; SMMR; UHF radiometry; estimation algorithm; hydrology; land surface; measurement technique; microwave radiometry; remote sensing; soil moisture; surface moisture; temperature; temporal trends; terrain mapping; Brightness temperature; Data handling; L-band; Land surface; Land surface temperature; Moisture; Pattern analysis; Radiometry; Temperature sensors; Vegetation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
Type :
conf
DOI :
10.1109/IGARSS.1996.516564
Filename :
516564
Link To Document :
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