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Land Cover Diversity - Direct Download

Summary

Type of release
ongoing release of a series of related datasets

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Release Date
3 October 2014
Modified Date
3 October 2014
Update Frequency
irregular
Publishers
U.S. Geological Survey, Department of the Interior
Identifier
land-cover-diversity-direct-download
Landing Page
http://catalog.data.gov/dataset/land-cover-diversity-direct-download
Temporal Coverage
1 January 1992 — 1 January 1993

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Description

This map layer is an Arc/INFO grid map of North America, excluding Hawaii and including the Caribbean and most of Mexico, that portrays at 1 sq. km resolution an index of land cover diversity calculated at 729 sq. km. scale. The map layer was created by applying a spatial filter to a published map of seasonal land cover regions (Loveland et al. 1991) known as NASLCR1_2L which was obtained from the USGS EROS Data Center Distributed Active Archive Center (DAAC). The spatial filter computed Simpson's (1949) index of land cover diversity within 729 sq. km. (27 x 27 pixels) windows from the proportions of different land cover types within a window. The [0,1] continuous index was discretized, and a byte representation (range: [1,245], with zero reserved for missing values) of the index value was stored at the center location in each window. The resulting surface map was projected to a standard projection, and clipped to shorelines defined by the STATP075 shoreline map (USGS). The data available through the National Atlas of the United States are in GeoTIFF format. This is a revised version of the May 2002 map layer, with a corrected shoreline for Greenland.

General Information

Legal Information

This dataset has been created by US Government which means it is required to be in the public domain. However US copyright law only allows open access by US citizens, we have assumed the data is equivalently licensed as CC0 for the rest of the world as this is in the spirit of the US Government’s Open Data policy.

  • The rights statement is at

    http://catalog.data.gov/dataset/land-cover-diversity-direct-download Do you think this data is incorrect? Let us know

  • Outside the US, this data is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • There are

    yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

  • The content is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • This data contains

    no data about individuals Do you think this data is incorrect? Let us know

Practical Information

  • The data appears in this collection

    http://catalog.data.gov/organization/usgs-gov Do you think this data is incorrect? Let us know

  • This data changes

    no Do you think this data is incorrect? Let us know

  • The data is

    backed up offsite Do you think this data is incorrect? Let us know

Technical Information

Social Information

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    a URL to download the dataset Do you think this data is incorrect? Let us know

  • Find out how to contact someone about this data at

    http://catalog.data.gov/dataset/land-cover-diversity-direct-download Do you think this data is incorrect? Let us know

  • Find out how to suggest improvements to publication at

    http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/land-cover-diversity-direct-download Do you think this data is incorrect? Let us know

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