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Catalog Record: Arctic Alaska Lake Cover Map
Filename: imported_locations

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Aga arctic ak lake cover 2005

Arctic Alaska Lake Cover Map

Lake cover strongly affects the reflectance of the land surface over large areas of Alaska, and was useful for identifying extensive wetlands. Lake cover was based on the number of AVHRR water pixels in each mapped polygon, divided by the number of pixels in the polygon. Since the imagery has a pixel size of 1 km2, lake cover is underestimated for areas with many small lakes. Pixels within 2 km of the coastline were excluded to avoid ocean water. The percent cover data were grouped into six categories: < 2%, 2-10%, 10-25%, 25-50%, 50-75%, and 75-100%. Since the sum of the last three categories was only 1.5%, (the 75-100% category covered 1% of the map), they were combined for the map into one category, >25%.

Complete

Data and Resources

  • Download

    Download :: GIS Data

    aga_arctic_ak_lake_cover_2005.shp.zip (191 KB)

  • View website

    Website :: Toolik Arctic Geobotanical Atlas

    http://www.arcticatlas.org/maps/themes/ak/aklc

Status: Complete
Type: Data
Data Types: GIS, Image, Map
Primary Contacts
Name: Donald A. (Skip) Walker
Email: dawalker@alaska.edu
Other Contacts
Name: Martha Raynolds
Email: mkraynolds@alaska.edu
Regions
Alaska, Arctic

Source Portal
NSSI Portal

Direct Record Link
http://agc.portal.gina.alaska.edu/catalog/entries/5487-arctic-alaska-lake-cover-map
Direct Full Map Link
http://agc.portal.gina.alaska.edu/catalog/entries/5487-arctic-alaska-lake-cover-map/map