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    • Indicators of Coastal Water Quality: Change in Chlorophyll-a Concentration 1998-2007

    Metadata Updated: December 6, 2023

    The Change in Chlorophyll-a Concentrations 1998-2007 component of the Indicators of Coastal Water Quality Collection represents a tabular time series of the chlorophyll-a concentrations for each grid cell, derived from the "Indicators of Coastal Water Quality: Annual Chlorophyll-a Concentration 1998-2007" data set. Chlorophyll-a concentrations are derived from NASA's Sea-viewing Wide Field-of-view Sensor (SeaWiFS). The grid cells are organized by country, and the percentage of change from 1998-2007 is calculated for each cell. Each time series was assessed with a linear regression, and cells with statistically significant trends in chlorophyll-a concentrations are identified. The rows of the table are linked to a sequence grid from the "Indicators of Coastal Water Quality: Ancillary Data" collection to facilitate the mapping of the trend values for selected countries and areas of interest. The data are processed and compiled by the Columbia University Center for International Earth Science Information Network (CIESIN).

    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/H4DN4300
    https://doi.org/10.7927/H4J96490

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date December 6, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Maps Download Page

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date December 6, 2023
    Publisher SEDAC
    Maintainer
    Identifier C179002070-SEDAC
    Data First Published 2009-12-31
    Language en-US
    Data Last Modified 2009-12-31
    Category ICWQ, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Goddard Space Flight Center - GSFC, and Center for International Earth Science Information Network - CIESIN - Columbia University. 2009-12-31. Indicators of Coastal Water Quality: Change in Chlorophyll-a Concentration 1998-2007. Version 1.00. Palisades, NY. Archived by National Aeronautics and Space Administration, U.S. Government, NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/H48W3B88. https://doi.org/10.7927/H48W3B88.
    Creator Goddard Space Flight Center - GSFC, and Center for International Earth Science Information Network - CIESIN - Columbia University
    Graphic Preview Description Maps Download Page
    Graphic Preview File https://sedac.ciesin.columbia.edu/data/set/icwq-change-in-chlorophyll-a-concentration-1998-2007/maps
    Harvest Object Id 280507e5-4eba-456c-8dca-9ab24e653353
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.7927/H48W3B88
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Related Documents https://doi.org/10.7927/H4DN4300, https://doi.org/10.7927/H4J96490
    Release Place Palisades, NY
    Source Datajson Identifier True
    Source Hash 6aa1818de86784d20fcd8d3c74dcfd2e4c46c065d021a813189734918bbfda9d
    Source Schema Version 1.1
    Spatial
    Temporal 1998-01-01T00:00:00Z/2007-12-31T00:00:00Z

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