PROVE Land Cover and Leaf Area of Jornada Experimental Range, New Mexico, 1997

Field measurement of shrubland ecological properties is important for both site monitoring and validation of remote-sensing information. During the NASA Earth Observing System Prototype Validation Exercise (PROVE) at the Jornada Experimental Range, New Mexico, on May 20-30, 1997, we calculated plot-level plant area index, leaf area index, total fractional cover, and green fractional cover with data from four instruments: (1) a Dycam Agricultural Digital Camera (ADC), (2) a LI-COR LAI-2000 plant canopy analyzer, (3) a Decagon sunfleck ceptometer, and (4) a laser altimeter. Estimates from the LAI-2000 and ceptometer were very similar (plant area index 0.3, leaf area index 0.22, total fractional cover 0.19, green fractional cover 0.14), but the ADC produced values 5 to 10% higher. Laser altimeter values, depending on the height cutoff used to establish total fractional cover, were either higher or lower than the other instruments' values: a 10-cm cutoff produced values approximately 80% higher, whereas a 20-cm cutoff produced values approximately 30% lower.

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Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated May 18, 2026, 20:53 (UTC)
Created April 1, 2025, 18:27 (UTC)
accessLevel public
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/665
license https://www.usa.gov/government-works
modified 2026-05-14T22:12:40Z
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publisher ORNL_DAAC
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spatial [[{"WestBoundingCoordinate":-106.75,"NorthBoundingCoordinate":32.5,"EastBoundingCoordinate":-106.75,"SouthBoundingCoordinate":32.5}],"CARTESIAN"]
temporal 1997-05-13/1997-05-31
theme {"Earth Science"}