Seasonal/cultural change in Central America an analysis application of NOAA-AVHRR imagery

Global Vegetative Index (GVI) array NOAA-AVHRR imagery was processed to analyze the seasonal differences in reflectivity of Central America. In addition, the Ambroziak Color Coordinate system was used to produce a time series of "natural color" images. The dates examined range from 82-319...

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Bibliographic Details
Published in:Revista geográfica - Instituto panamericano de geografía e historia 1986-01 (103), p.19-34
Main Authors: Ludeke, Aaron Kim, Holz, Robert K., Phillips, Pamela L., Nerem, R. Steve
Format: Article
Language:English
Subjects:
Advanced very high resolution radiometers
Artificial satellites
Clouds
Dry seasons
Landsat
Rain
Remote sensing
Sustainable agriculture
Vegetation
Vegetation index
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Summary:Global Vegetative Index (GVI) array NOAA-AVHRR imagery was processed to analyze the seasonal differences in reflectivity of Central America. In addition, the Ambroziak Color Coordinate system was used to produce a time series of "natural color" images. The dates examined range from 82-319 the week ending 14 November 1982 to 83-073 the week ending 14 March 1983. The images were compared with historical meteorological and natural resource data. The images were also analyzed by natural resource planners and managers familiar with the study area. The results of this study demonstrate that NOAA-AVHRR GVI data does provide useful information about change in vegetation due to seasonal/cultural effects on a regional/national level. These data products could provide valuable first stage analysis of areas with frequent cloud cover due to the cloud subtraction feature of the GVI algorithm. Also, the cost of data acquisition is relatively inexpensive. These two features recommend NOAA-AVHRR GVI data as an attractive complement to Landsat MSS data for developing countries in the humid tropics.
ISSN:0031-0581