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ARS Home » Research » Publications at this Location » Publication #97170
Title: LENGTH SCALE ANALYSIS OF SURFACE ALBEDO, TEMPERATURE AND NDVI IN A DESERT GRASSLAND.

Author
item PELGRUM, PELGRUM - WINAND STARING CTR
item Schmugge, Thomas
item Rango, Albert
item Ritchie, Jerry
item Kustas, William - Bill

Submitted to: Water Resources Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/3/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary: This papers studies and assesses the characteristic length scales of surface features using remotely sensed data. This research will benefit scientists and industries.

Technical Abstract: The JORNada Experiment (JORNEX) on the USDA/ARS Jornada Experimental Range aims to describe the surface energy balance of a desert grassland ecosystems through the use of remotely sensed data. Airborne data with a spatial resolution of 4m have been used to infer characteristic length scales of the following surface parameter: surface temperature, albedo and NDVI. These length scales have been determined with both variogram and wavelet analysis. Three sites with different vegetation types were studied: grass, shrub and a mixture of the two. Both techniques gave similar results. As expected the grass site with most uniformity had the longest length scales and the shrub sites had the shortest for all three parameters.