AVHRR-Derived NDVI Metrics Product Development. Version 1.0.

摘要

Advanced Very High Resolution Radiometer (AVHRR) data are being used by the National Park Service (NPS), Alaska Region Inventory & Monitoring (I&M) Program and the University of Alaska-Geographic Information Network of Alaska (GINA) to monitor and study the interannual variability of vegetation across Alaska. GINA acquires standardized AVHRR-derived Normalized Difference Vegetation Index (NDVI) data, derives NDVI metrics, and distributes the NDVI data and NDVI metrics data. This document briefly introduces how to acquire the standardized AVHRR products from existing archives at the USGS-EROS Data Center, as well as how to deliver the processed results. It also describes the NDVI metrics algorithm and its usage