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NDVI (Normalized difference vegetation index) Image of 1998 Landsat Thematic Mapper Image
Identifier:73_1
Publication date:2002
Author(s):
William Stefanov
Abstract:
Normalized difference vegetation index (NDVI) produced from the 1998 Landsat Thematic Mapper(TM) image. NDVI is a means of monitoring density and vigour of green vegetation growth using the spectral reflectivity of solar radiation.
Keywords:
ndvi, Phoenix, Arizona, Sonoran Desert, caplter, Central Arizona Phoenix Longterm Ecological Research, urban, metropolitan area, Landsat TM, Land-Use and Land-Cover Change, Database Remote Sensing GIS Applications, Land Use Changes, Project id 20, caplter created, gis, remote sensing, Primary Production
Temporal Coverage:
1998-06-01
Geographic Coverage:
Geographic Description:Central Arizona Phoenix LTER Study area
Bounding Coordinates:
Longitude:-112.782256 to -111.571088
Latitude:33.846658 to 33.192501
Contact:
Data Manager, Arizona State University,
Global Institute of Sustainability,POB 875401,TEMPE
caplter.data@asu.edu
Methods used in producing this dataset:
NDVI computation
The raw Landsat image was clipped to CAPLTER, georeferenced to NAD27 datum and UTM zone 12 coordinate system. Additional preprocessing include atmospheric correction and radiometric calibration. The model of the following form is then applied: (NIR-RED) / (NIR+RED), where NIR (Near Infra-Red) is the TM band 4 (0.76-0.9 micrometers) and RED is band 3 (0.78-0.82 micrometers). The range of possible values is -1 to +1.
Entities:
Raster: TM5_6_98_ndvi
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Attributes:
Attribute:Value
Description:Index of vegetation density
Measurement Unit:dimensionless
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