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

Citation:

Citation Information:

Originator: Goddard Space Flight Center (GSFC), and Center for International Earth Science Information Network (CIESIN)/Columbia University
Publication Date: 2009
Title: Indicators of Coastal Water Quality: Change in Chlorophyll-a Concentration 1998-2007
Edition: 1.00
Geospatial Data Presentation Form: tabular, map
Publication Information:

Publication Place: Palisades, NY
Publisher: NASA Socioeconomic Data and Applications Center (SEDAC)

Online Linkage: http://sedac.ciesin.columbia.edu/data/set/icwq-change-in-chlorophyll-a-concentration-1998-2007

Description:

Abstract:
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).
Purpose:
To provide tabular data on the trends of chlorophyll-a concentration on a pixel by pixel basis for identifying areas with improving, declining, and stable coastal water quality that can provide guidance for decision making in the context of coastal management.
Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 1998
Ending Date: 2007

Status:

Progress: Complete
Maintenance and Update Frequency: As needed

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -180.000000
East Bounding Coordinate: 180.000000
North Bounding Coordinate: 90.000000
South Bounding Coordinate: -90.000000

Keywords:

Theme:

Theme Keyword Thesaurus: General
Theme Keyword: Chlorophyll
Theme Keyword: Coastal Zones
Theme Keyword: SeaWiFS

Theme:

Theme Keyword Thesaurus: ISO Topic
Theme Keyword: Oceans

Theme:

Theme Keyword Thesaurus: SEDAC Topic
Theme Keyword: Sustainability Indicators

Theme:

Theme Keyword Thesaurus: WDC Theme
Theme Keyword: Sustainability

Theme:

Theme Keyword Thesaurus: CIESIN Indexing Vocabulary Version 2.1 (GCMD Format)
Theme Keyword: CIESIN > Environmental Protection > Water Characteristics > Salt Water
Theme Keyword: CIESIN > Environmental Protection > Water Forms > Coastal Waters
Theme Keyword: CIESIN > Environmental Protection > Water Forms > Coastal Zones
Theme Keyword: CIESIN > Environmental Protection > Water Forms > Oceans
Theme Keyword: CIESIN > Environmental Protection > Water Quality

Theme:

Theme Keyword Thesaurus: GCMD Parameter Valids
Theme Keyword: EARTH SCIENCE > Oceans > Ocean Chemistry > Pigments > Chlorophyll

Theme:

Theme Keyword Thesaurus: CSA-NBII Biocomplexity
Theme Keyword: Coastlines

Theme:

Theme Keyword Thesaurus: Data Granularity
Theme Keyword: Country

Theme:

Theme Keyword Thesaurus: EI Gateway Vocabulary
Theme Keyword: Conservation

Place:

Place Keyword Thesaurus: CIESIN Location Terms, version 2.0
Place Keyword: Region > Equatorial
Place Keyword: Global
Place Keyword: Region > Mid-Latitude
Place Keyword: Continent > North America
Place Keyword: Region > Oceania
Place Keyword: Region > Polar
Place Keyword: Continent > South America

Access Constraints: None
Use Constraints:
The Goddard Space Flight Center (GSFC) and Trustees of Columbia University in the City of New York hold the copyright of this data set. Users are prohibited from any commercial, non-free resale, or redistribution without explicit written permission from GSFC or CIESIN. Users should acknowledge GSFC and CIESIN as the source used in the creation of any reports, publications, new data sets, derived products, or services resulting from the use of this data set. GSFC or CIESIN also request reprints of any publications and notification of any redistributing efforts.
Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: NASA Socioeconomic Data and Applications Center (SEDAC)

Contact Address:

Address Type: mailing and physical address
Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: NY
Postal Code: 10964
Country: USA

Contact Voice Telephone: +1 845-365-8920
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: ciesin.info@ciesin.columbia.edu

Cross Reference:

Citation Information:

Originator: Goddard Space Flight Center (GSFC), and Center for International Earth Science Information Network (CIESIN)/Columbia University
Publication Date: 2009
Title: Indicators of Coastal Water Quality: Annual Chlorophyll-a Concentration 1998-2007
Edition: 1.00
Geospatial Data Presentation Form: raster
Publication Information:

Publication Place: Palisades, NY
Publisher: NASA Socioeconomic Data and Applications Center (SEDAC)

Online Linkage: http://sedac.ciesin.columbia.edu/data/set/icwq-annual-chlorophyll-a-concentration-1998-2007

Cross Reference:

Citation Information:

Originator: Goddard Space Flight Center (GSFC), and Center for International Earth Science Information Network (CIESIN)/Columbia University
Publication Date: 2009
Title: Indicators of Coastal Water Quality: Ancillary Data
Edition: 1.00
Geospatial Data Presentation Form: vector, raster
Publication Information:

Publication Place: Palisades, NY
Publisher: NASA Socioeconomic Data and Applications Center (SEDAC)

Online Linkage: http://sedac.ciesin.columbia.edu/data/set/icwq-ancillary-data

Lineage:

Process Step:

Process Description:
Yearly concentrations contained in "Indicators of Coastal Water Quality: Annual Chlorophyll-a Concentration 1998-2007" were combined into a time series table, and the following statistics were calculated to characterize trends over time: slope of regression of chlorophyll-a concentration on year (SLOPE), r-square values of regression (R2), change in percent between 1998 and 2007 (expressed relative to 1998) (CHANGE), and p-value of regression (P). Percentage change from all grid cells showing significant trends were combined in the column SCHANGE, and cells with non-significant trends were given the value -999999. Region assignments followed UN classifications. For more details on procedures, see project documentation available at http://sedac.ciesin.columbia.edu/es/seawifs.html.

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization: NASA Socioeconomic Data and Applications Center (SEDAC)

Contact Address:

Address Type: mailing and physical address
Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: NY
Postal Code: 10964
Country: USA

Contact Voice Telephone: +1 845-365-8920
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: ciesin.info@ciesin.columbia.edu

Resource Description: CIESIN_SEDAC_ICWQ_CCHLOA
Distribution Liability:
CIESIN follows procedures designed to ensure that data disseminated by CIESIN are of reasonable quality. If, despite these procedures, users encounter apparent errors or misstatements in the data, they should contact SEDAC User Services at +1 845-365-8920 or via email at ciesin.info@ciesin.columbia.edu. Neither CIESIN nor NASA verifies or guarantees the accuracy, reliability, or completeness of any data provided. CIESIN provides this data without warranty of any kind whatsoever, either expressed or implied. CIESIN shall not be liable for incidental, consequential, or special damages arising out of the use of any data provided by CIESIN.
Standard Order Process:

Ordering Instructions:
The data in Microsoft Excel (XLS)and Comma Separated Values (CSV), and maps in Portable Document Format (PDF) and Joint Photographic Experts Group (JPG) formats are available from the from the NASA Socioeconomic Data and Applications Center (SEDAC).
Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: XLSX, CSV
File Decompression Technique: Unzip

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: http://sedac.ciesin.columbia.edu/data/set/icwq-change-in-chlorophyll-a-concentration-1998-2007/data-download

Access Instructions: Data accessible via direct download.

Digital Form:

Digital Transfer Information:

Format Name: PDF, PNG

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: http://sedac.ciesin.columbia.edu/data/set/icwq-change-in-chlorophyll-a-concentration-1998-2007/maps

Access Instructions: Maps accesible via direct download.

Available Time Period:

Time Period Information:

Single Date/Time:

Calendar Date: 2009

Metadata Date: 2009/07/15
Metadata Review Date: 2013/02/28
Metadata Future Review Date: 2014/02/28
Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Center for International Earth Science Information Network (CIESIN) Metadata Administration

Contact Address:

Address Type: mailing and physical address
Address: CIESIN, Columbia University, 61 Route 9W, P.O. Box 1000
City: Palisades
State or Province: NY
Postal Code: 10964
Country: USA

Contact Voice Telephone: +1 845-365-8988
Contact Facsimile Telephone: +1 845-365-8922
Contact Electronic Mail Address: metadata@ciesin.columbia.edu

Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998