NDLI: ASTER observations of the spectral emissivity for arid lands

Content Provider	IEEE Xplore Digital Library
Author	Schmugge, T. French, A. Ritchie, J. Chopping, M. Rango, A.
Copyright Year	2001
Description	Author affiliation: USDA-ARS Hydrology Lab., Beltsville, MD, USA (Schmugge, T.)
Abstract	On May 9, 2000 the Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) on the Terra satellite obtained data over the Jornada Experimental Range test site along the Rio Grande river and the White Sand National Monument in New Mexico. ASTER has 14 channels from the visible and near-infrared (VNIR) through the thermal infrared (TIR) with 15 m resolution in the VNIR and 90 m in the TIR. The overpass time is approximately 11 a.m. With 5 channels between 8 and 12 /spl mu/m these multispectral TIR data from ASTER provide the opportunity to separate the temperature and emissivity effects observed in the thermal emission from the land surface. Ground measurements during these overflights included surface temperature, vegetation type and condition and limited surface emissivity measurements. There was also an aircraft flight with the MODIS/ASTER simulator on June 14, 2000, unfortunately not coincident with a satellite overpass. Preliminary results indicate good agreement between ASTER brightness temperatures and ground measures. Analysis of earlier aircraft data has shown that the multispectral TIR data are very effective for estimating both the surface temperature and emissivity. These results will be compared with those obtained from the ASTER data for this site. With multispectral, thermal infrared observations provided by ASTER it is possible for the first time to estimate the spectral emissivity. variation for these surfaces on a global basis at high spatial resolution.
Starting Page	715
Ending Page	717
File Size	205894
Page Count	3
File Format	PDF
ISBN	0780370317
DOI	10.1109/IGARSS.2001.976612
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-07-09
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Land surface temperature Land surface Satellite broadcasting Aircraft Reflection Radiometry Testing Rivers Vegetation MODIS
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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