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Assessing spatial and seasonal variations in grasslands with spectral reflectances from a helicopter platformThe helicopter system data acquisition technique has shown to be a viable means of gathering surface data with spectral detail adequate for intersite, intrasite, and temporal characterizations and for assessing temporal and spatial variability throughout the FIFE 1987 IFCs. The successful employment of nadir measurements for grassland assessments is notable given the reflectance anisotropy (Middleton, 1992). Though only five sites were repetitively observed, the conclusions reached from this particular sample of sites agree well with assessments from other data sources (Sellars et al., 1990 and Kittel et al., 1990).
Document ID
19930036624
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Walthall, Charles L.
(Maryland Univ. College Park, United States)
Middleton, Elizabeth M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
November 30, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: D17
ISSN: 0148-0227
Subject Category
Earth Resources And Remote Sensing
Accession Number
93A20621
Funding Number(s)
PROJECT: RTOP 677-21-40
PROJECT: RTOP 677-21-36
Distribution Limits
Public
Copyright
Other

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