C-CAP Washington 1995-2000-Era Land Cover Change Analysis Metadata

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Frequently-anticipated questions:


What does this data set describe?

Title:
C-CAP Washington 1995-2000-Era Land Cover Change Analysis Metadata
Abstract:
This data set contains the 1995-era and 2000-era classifications of Coastal Washington and can be used to analyze change.This data set utilized 45 full or partial Landsat 5 and 7 Thematic Mapper scenes which were analyzed according to the Coastal Change Analysis Program (C-CAP) protocol to determine land cover.
  1. How should this data set be cited?

    National Oceanographic and Atmospheric Administration (NOAA) Coastal Services Center (CSC)/Coastal Change Analysis Program (C-CAP), 20041001, C-CAP Washington 1995-2000-Era Land Cover Change Analysis Metadata: NOAA Coastal Change Analysis Program (C-CAP), NOAA CSC, Charleston, SC.

    Online Links:

    This is part of the following larger work.

    This layer contains the 1995 an, 1995 Landsat 5 data, and change info, 20041001, C-CAP US (United States) West Coast Land Cover Project: NOAA Coastal Change Analysis Program (C-CAP), NOAA CSC, Charleston, SC.

    Other_Citation_Details:
    This Classification and change analysis is based on Landsat TM scenes p45r26 (07/13/1996), (03/21/2001), (07/16/2000), (10/18/1999) p45r27 (07/13/1996), (03/26/2000), (07/22/2002), (10/04/2000) p45r28 (07/13/1996), (03/21/2001), (07/16/2000), (08/17/2000) p46r26 (08/21/1996), (05/07/2001), (08/11/2001), (09/12/2001) p46r27 (08/21/1996), (05/31/2001), (07/07/2000), (09/25/2000) p46r28 (08/21/1996), (04/10/2000), (07/07/2000), (09/25/2000) p47r26 (08/12/1996), (02/13/2000), (07/30/2000), (10/05/2001) p47r27 (08/12/1996), (02/26/2002), (07/30/2000), (11/01/1999) p47r28 (07/11/1996), (02/26/2002), (07/01/2001), (10/16/1999) p48r26 (09/18/1995), (04/03/2001), (07/21/2000), (09/23/2000) p48r27 (09/18/1995), (01/31/1993), (04/03/2001), (07/03/2000), (09/23/2000)

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -125.378929
    East_Bounding_Coordinate: -118.554782
    North_Bounding_Coordinate: 48.634880
    South_Bounding_Coordinate: 46.097660

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 18-Sep-1995
    Ending_Date: 26-Feb-2002
    Currentness_Reference: Date of the Landsat scenes

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: Map

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Raster data set.

    2. What coordinate system is used to represent geographic features?

      The map projection used is Albers Conical Equal Area.

      Projection parameters:
      Standard_Parallel: 29.5
      Standard_Parallel: 45.5
      Longitude_of_Central_Meridian: 96 West
      Latitude_of_Projection_Origin: 23 North
      False_Easting: 0.00000
      False_Northing: 0.00000

      Planar coordinates are encoded using Row and column
      Abscissae (x-coordinates) are specified to the nearest 30 meter
      Ordinates (y-coordinates) are specified to the nearest 30 meter
      Planar coordinates are specified in Meters

      The horizontal datum used is North American Datum 1983.
      The ellipsoid used is GRS80.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257.

  7. How does the data set describe geographic features?

    US West Coast Coastal Zone
    US West Coast coastal zone as delineated by NOAA using scene boundaries, hydrological units, and county boundaries (Source: unknown)

    Change Description
    Landcover Change from circa 1995 to circa 2000 NOAA Coastal Change Analysis Program (C-CAP): Guidance for Regional Implementation (Source: Dobson, J. et al, NOAA Coastal Change Analysis Program (C-CAP): Guidance for Regional Implementation, NOAA Technical Report NMFS (National Marine Fisheries Service) 123, U.S. Department of Commerce, April 1995)

    ValueDefinition
    1Unclassified (Cloud, Shadow, etc.) to Unclassified (Cloud, Shadow, etc)
    2Unclassified (Cloud, Shadow, etc.) to High Intensity Developed
    3Unclassified (Cloud, Shadow, etc.) to Medium Intensity Developed


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?


Why was the data set created?

To improve the understanding of coastal uplands and wetlands, and their linkages with the distribution,abundance, and health of living marine resources.


How was the data set created?

  1. From what previous works were the data drawn?

    NOAA CSC (source 1 of 1)
    Imaging, Space, 20041001, C-CAP Classification for Washington Coastal Zone, Late-Date: NOAA Coastal Services Center, Charleston SC.

    Online Links:

    Type_of_Source_Media: CD-ROM
    Source_Contribution: NOAA CSC

  2. How were the data generated, processed, and modified?

    (process 1 of 1)
    This dataset was created by Space Imaging. This dataset contains the classifications of 1995-era imagery and 2000- era imagery. It is used for change analysis between these years. The attributes include a from-to change description category. There are 484 classes corresponding to the 484 possible from-to change combinations. In this section of the metadata, first the 2000-era classification procedure is described, then the 1995-era classification procedure is described. Then in the post-processing section, the process of combining the maps to generate a spatial matrix of change is discussed.
    Late Date (2000-era) Classification: This section outlines the classification procedure for the Washington C-CAP. The three dates of imagery were first reviewed for image quality and shifts between image dates. Training points were used as the dependent variable in a CART (Classification Analysis by Regression Tree) approach. Ancillary data layers were calculated from the TM data and were used as additional independent variables in the analysis. Different versions of the map were produced using different combinations of independent variables. The rough map represented the output from the CART classification routine. Ancillary data were used in spatial models were applied to the rough map to produce the provisional map. This represented a fully automated product. This product was then altered by hand edits to refine the classification. In addition, a percent impervious data layer developed from TM data using high resolution imagery, was imbedded into the classification to define the developed classes. This produced the final-with-edits version which is the final version of the classification and is the one described here. Pre-processing steps: Each Landsat TM scene was geo-referenced by USGS (United States Geological Survey) EROS Data Center. The Space Imaging staff reviewed the spectral and spatial quality of the imagery. Areas that were greater than 1-2 pixels off were sent back to USGS for reprocessing. The data was geo-referenced to Albers Conical Equal Area, with a spheroid of GRS 1980, and Datum of WGS84.

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    This data contains both 1995-era and 2000-era information. An accuracy assessment was completed for the 2000-era classification only because the ground truth was collected in 2002 and 2003.
    While the accuracy of a 1995-era classification is hard to determine based on 2000-era ground truth, the 1995-era classification is composed of approximately 95.5% of the final 2000-era classification. This is because only the areas of change between 1995 and 2000 were classified for the early-date classification. Then the classified early-date layer was overlaid onto the late-date classification. Therefore the accuracy assessment for the late-date classification is still a good estimate of the accuracy of the early-date classification.
    According to accuracy assessment performed by Space Imaging, the overall accuracy is 86.1% and 85.0% Kappa. The accuracy results shown below are from a combined accuracy completed on both Oregon and Washington

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None, except for a possible fee.
Use_Constraints:
Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

  1. Who distributes the data set? (Distributor 1 of 1)

    NOAA Coastal Services Center
    c/o Clearinghouse Manager
    Clearinghouse Manager
    2234 South Hobson Avenue
    Charleston, SC 29405-2413
    USA

    (843)740-1210 (voice)
    (843)740-1224 (FAX)
    clearinghouse@csc.noaa.gov

    Hours_of_Service: Monday-Friday, 8-5 EST
  2. What's the catalog number I need to order this data set?

    CCAP Change Analysis from 1995 to 2000 of Coastal Washington

  3. What legal disclaimers am I supposed to read?

    This product is available for distribution.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 27-Dec-2006
Last Reviewed: 27-Dec-2006
Metadata author:
NOAA Coastal Services Center
c/o Metadata Specialist
Metadata Specialist
2234 S Hobson Ave.
Charleston, SC 29405
USA

843-740-1210 (voice)
843-740-1224 (FAX)
csc@csc.noaa.gov

Hours_of_Service: 8:00 am to 5:00 pm EST.
Metadata standard:
FGDC (Federal Geographic Data Committee) CSDGM (Content Standard for Digital Geospatial Metadata) (FGDC-STD-001-1998)


Generated by mp version 2.9.6 on Wed Apr 10 12:34:36 2013