HR: 1340h
AN: B43B-0268    [Abstracts]
TI: Sensitivity Analysis of Remote Sensing Data: Comparing the Response of Vegetation Indices in Tropical Areas.
AU: * Bonifaz, R
EM: bonifaz@calmit.unl.edu
AF: CALMIT-University of Nebraska-Lincoln, 102E Nebraska Hall, Lincon, NE 68588-0517 United States
AU: * Bonifaz, R
EM: bonifaz@calmit.unl.edu
AF: Instituto de Geofisica UNAM, Circuito Exterior, Ciudad Universitaria, Mexico, DF 04510 Mexico
AB: During the past two decades, satellite remote sensing systems possessing high temporal resolution, but typically moderate or coarse spatial resolution, have increasingly been used to characterize and map vegetation dynamics. Assessing the seasonality of tropical vegetation has, however, been especially challenging. Tropical regimes of temperature and precipitation are generally less variable and pronounced than those in other biomes, and variations in plant growth are often more subtle. Using samples from selected tropical land cover types (tropical rain forest, tropical grasses, tropical deciduous forest, mixed forest and agricultural areas), sensitivity analysis will be carried out comparing different 'greenness' indices such as the Normalized Difference Vegetation Index (NDVI), the Enhanced Vegetation Index (EVI) and the Wide Dynamic Range Vegetation Index (WDRVI) derived from the MODIS/TERRA sensor. This analysis will potentially allow the selection of the best index to describe the particular behavior of tropical vegetation for further characterization of seasonal changes of such areas.
DE: 0429 Climate dynamics (1620)
DE: 0430 Computational methods and data processing
DE: 0480 Remote sensing
DE: 1631 Land/atmosphere interactions (1218, 1843, 3322)
SC: Biogeosciences [B]
MN: Fall Meeting 2005