Relations between surface conductance and spectral vegetation indices at intermediate (100 m sq to 15 km sq) length scales

Journal Article · Sun Nov 01 00:00:00 EST 1992 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/92JD01096· OSTI ID:6115758

Sellers, P J; Heiser, M D; Hall, F G ^[1]

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1. NASA, Goddard Space Flight Center, Greenbelt, MD (United States) Maryland Univ., College Park (United States)

The relationship between surface conductance and spectral vegetation indices is investigated utilizing the FIFE data set, principally the surface flux station data and images from the TM instrument. It is found that the unstressed canopy conductance for a given site for a given day is near-linearly related to the incident PAR flux. Estimates of unstressed canopy conductance were acquired via a model inversion that separated the soil and vegetation contributions to evapotranspiration and made adjustments for the effects of vapor pressure deficit and soil moisture stress. 30 refs.

• Research Organization: National Aeronautics and Space Administration, Greenbelt, MD (United States). Goddard Space Flight Center
• OSTI ID: 6115758
• Journal Information: Journal of Geophysical Research; (United States), Vol. 97:D17; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
PLANTS
SPATIAL DISTRIBUTION
SOILS
ELECTRIC CONDUCTIVITY
TEMPERATURE DISTRIBUTION
REMOTE SENSING
AERIAL MONITORING
CANOPIES
EVAPORATION
GENERAL CIRCULATION MODELS
GROUND TRUTH
HEAT FLUX
PHOTOSYNTHESIS
SPECTRAL REFLECTANCE
CHEMICAL REACTIONS
DISTRIBUTION
ELECTRICAL PROPERTIES
MATHEMATICAL MODELS
MONITORING
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHOTOCHEMICAL REACTIONS
PHYSICAL PROPERTIES
SYNTHESIS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
540210 - Environment
Terrestrial- Basic Studies- (1990-)