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    • West Africa Coastal Vulnerability Mapping: Subset of JRC Map of Accessibility

    Metadata Updated: April 24, 2025

    The West Africa Coastal Vulnerability Mapping: Subset of JRC Map of Accessibility data set is a 30 arc-second raster of travel time to major cities in West Africa within 200 kilometers of the coast. Extensive literature shows that road networks and market accessibility play an important role in development and access to health care and other social services. Greater spatial isolation is assumed to produce higher vulnerability to climate stressors. Market accessibility is defined as the travel time to a location of interest using land (road/off road) or water (navigable river, lake, and ocean) based travel. A team at the Joint Research Centre (JRC) in Ispra, Italy, created a global raster of accessibility using a cost-distance algorithm which computes the "cost" (in Units of time) of traveling between two locations on a regular raster grid. The raster grid cells contain values which represent the cost required to travel across them, hence this raster grid is often termed a friction-surface. The friction-surface contains information on the transport network, and environmental and political factors that affect travel times between locations. Transport networks can include road and rail networks, navigable rivers, and shipping lanes. The locations of interest are termed targets, and in the case of this data set, the targets are cities with a population of 50,000 or greater in the year 2000.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    References

    https://doi.org/10.7927/H4F769H4
    https://doi.org/10.7927/H45T3HFZ
    https://doi.org/10.7927/H4222RQJ
    https://doi.org/10.7927/H4X9287N
    https://doi.org/10.7927/H4SJ1HHX
    https://doi.org/10.7927/H4J10131
    https://doi.org/10.7927/H4DB7ZR7
    https://doi.org/10.7927/H48K7719
    https://doi.org/10.7927/H44T6G9K
    https://doi.org/10.7927/H4125QK5
    https://doi.org/10.7927/H4RJ4GCJ
    https://doi.org/10.7927/H4MS3QP8
    https://doi.org/10.7927/H4H41PCK
    https://doi.org/10.7927/H49K485P
    https://doi.org/10.7927/H4K0726D
    http://doi.org/10.3390/ijgi4042561

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date April 24, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date April 24, 2025
    Publisher SEDAC
    Maintainer
    Identifier C1577578302-SEDAC
    Data First Published 2018-12-06
    Language en-US
    Data Last Modified 2025-04-23
    Category WACVM, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 5b5f1507-3fb9-47f6-a07b-4a3ba2ee655e
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.7927/H4W95738
    Metadata Type geospatial
    Old Spatial -16.71 1.65 16.21 13.9
    Program Code 026:001
    Related Documents https://doi.org/10.7927/H4F769H4, https://doi.org/10.7927/H45T3HFZ, https://doi.org/10.7927/H4222RQJ, https://doi.org/10.7927/H4X9287N, https://doi.org/10.7927/H4SJ1HHX, https://doi.org/10.7927/H4J10131, https://doi.org/10.7927/H4DB7ZR7, https://doi.org/10.7927/H48K7719, https://doi.org/10.7927/H44T6G9K, https://doi.org/10.7927/H4125QK5, https://doi.org/10.7927/H4RJ4GCJ, https://doi.org/10.7927/H4MS3QP8, https://doi.org/10.7927/H4H41PCK, https://doi.org/10.7927/H49K485P, https://doi.org/10.7927/H4K0726D, http://doi.org/10.3390/ijgi4042561
    Source Datajson Identifier True
    Source Hash 9d2e663501b6c196cce8229946d95f80ee8f823fd7f56573fa2a9c9fbc221d75
    Source Schema Version 1.1
    Spatial
    Temporal 1987-01-01T00:00:00Z/2008-12-31T00:00:00Z

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