Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-434

BOREAS AFM-12 1-km AVHRR Seasonal Land Cover Classification

ABSTRACT: This regional land cover classification is based on the use of multitemporal 1-km Advanced Very High Resolution Radiometer (AVHRR) National Oceanic and Atmospheric Administration (NOAA 11) data that were analyzed in combination with selected Landsat Thematic Mapper (TM) and extensive field observations within a 619-km by 821-km subset of the 1,000-km by 1,000-km BOReal Ecosystem-Atmosphere Study (BOREAS) region (Steyaert et al., 1997). Following the approach developed by Loveland et al. (1991) for 1-km AVHRR land cover mapping in the conterminous United States, monthly Normalized Difference Vegetation Index (NDVI) image composites (April-September 1992) of this subset in the BOREAS region were used in an unsupervised image cluster analysis algorithm to develop an initial set of seasonal land cover classes. Extensive ground data with Global Positioning System (GPS) georeferencing, observations from low-level aerial flights over remote areas, and selected Landsat image composites for the study areas were analyzed to split, aggregate, and label the spectral-temporal clusters throughout the BOREAS region. Landsat TM image composites (bands 5, 4, and 3) were available for the 100-km by 100-km Northern Study Area (NSA) and Southern Study Area (SSA). This AVHRR land cover product was compared with Landsat TM land cover classifications for the BOREAS study areas (Steyaert et al., 1997). Companion files include example thumbnail images that may be viewed and the image data files downloaded using a convenient viewer utility.

daac.ornl.gov

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=434

Identified by : BOREAS_AVHRRLC1

This dataset was released on January 01, 1999.

The time range for this dataset is April 01, 1992 to September 30, 1992.

The spatial range for this dataset is 52° to 57° latitude, and -108° to -96° longitude. map (center)

This dataset uses data from an instance of the advanced-very-high-resolution-radiometer-2 instrument on the national-oceanic-and-atmospheric-administration-11 platform.
DOI : 10.3334/ORNLDAAC/434
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_434 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_434 (ornl lexicon)