60205
C-CAP Land Cover Change, Commonwealth of the Northern Mariana Islands (CNMI), Guguan, 2004 - 2016
Data Set
Published / External
47841
C-CAP
Project
Completed
2020-07-07
This data set contains the 2004 and 2016 classifications of Guguan, CNMI and can be used to analyze change. This data set utilized 2 full WorldView2 and Quickbird multispectral scenes and the 2004 high-resolution Guguan C-CAP data set, which were analyzed according to the Coastal Change Analysis Program (C-CAP) protocol to determine land cover.
To create a baseline inventory of land cover features which can be utilized by state and local resource managers.
11491
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND USE/LAND COVER CLASSIFICATION
Theme
ISO 19115 Topic Category
imageryBaseMapsEarthCover
Spatial
Global Change Master Directory (GCMD) Location Keywords
OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > MICRONESIA > NORTHERN MARIANA ISLANDS
Instrument
Global Change Master Directory (GCMD) Instrument Keywords
CAMERAS
Platform
Global Change Master Directory (GCMD) Platform Keywords
Airplane > Airplane
Platform
Global Change Master Directory (GCMD) Platform Keywords
WORLDVIEW-2 > DigitalGlobe WORLDVIEW-2
Platform
Global Change Master Directory (GCMD) Platform Keywords
WORLDVIEW-3 > DigitalGlobe WORLDVIEW-3
Theme
Land Cover
Theme
Land Cover Analysis
Theme
Remotely Sensed Imagery/Photos
Temporal
2004
Temporal
2016
Spatial
CNMI
Spatial
Coastal Zone
Spatial
Guguan
Office for Coastal Management
Charleston
SC
Data Set
5 years
Image (digital)
Users must assume responsibility to determine the usability of these data.
Data Steward
2020-07-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2020-07-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2020-07-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2020-07-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Acquisition date of the WorldView Scene
145.827223
145.856094
17.324907
17.293226
Range
2004-01-08
2016-02-08
Yes
3
Point
No
Row
1453
Column
1306
Vertical
1
Unclassified
None
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.
https://coast.noaa.gov/dataviewer/#/landcover/search/where:ID=9147
https://coast.noaa.gov/digitalcoast/data/ccaphighres
Online Resource
https://coast.noaa.gov/htdata/raster1/landcover/bulkdownload/hires/cnmi/
Online Resource
2016-05-23
Date that the source FGDC record was last modified.
2017-11-14
Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.
2018-02-08
Partial upload of Positional Accuracy fields only.
2018-03-13
Partial upload to move data access links to Distribution Info.
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.2.1350
Attribute accuracy report does not exist
12 meters CE90
There was no terrain correction in the geo-referencing procedure.
Data does not exist for all classes.
There are no pixels representing class 9 (Deciduous Forest), 11 (Mixed Forest), 24 (Tundra), 25 (Perennial Ice/Snow), 26 (Dwarf Scrub - Alaska specific class), 27 (Sedge/Herbaceous), and 28 (Moss - Alaska specific). Developed classes have been altered to exclude the percentage breakdown of impervious surfaces as the breakdown is not appropriate for high resolution mapping (Developed High Intensity (2), Developed Medium Intensity (3), and Developed Low Intensity (4) are reduced to Impervious (Class 2)).
Tests for logical consistency indicate that all row and column positions in the selected latitude/longitude window contain data. Conversion and integration with vector files indicates that all positions are consistent with earth coordinates covering the same area. Attribute files are logically consistent.
1
This dataset was created by NOAA's Ocean Service, Office for Coastal Management (OCM).
This dataset contains the classifications of 2004 imagery and 2016 imagery. It is used for change analysis between these years. The
attributes include a from-to change description category. There are
481 classes corresponding to the 481 possible from-to change combinations.
In this section of the metadata, the 2005 classification
procedure is described, then the 2016 change detection classification procedure is
described. Finally in the post-processing section, the process of combining
the maps to generate a spatial matrix of change is discussed.
Early Date (2004) Classification: This dataset was created by Sanborn (www.sanborn.com). This version of the classification is the High Resolution Land Cover (2004-era) for the Island of Guguan, CNMI. This section outlines the classification procedure for the Guguan, CNMI High Resolution C-CAP. This island has no man-made impervious surfaces, thus an impervious layer was not created. The mapping approach utilized a boundary summary and refinement procedure developed by Sanborn to leverage previous United States Forest Service mapping efforts to create the high resolution land cover data set. A calibration visit was conducted and training data was collected for classification. Non impervious features were mapped using a 0.5 acre minimum mapping unit (MMU).
Pre-processing steps: The Quickbird mosaic utilized for this project was provided from Digital Globe as an orthorectifed, georeferenced product and was consistent with the quoted 1:12000 spatial accuracy.
Field-Collected Data: Training data was collected in the field between March 14th and 27th, 2008. Land cover observations were recorded by analysts. The referenced dataset went through a QA/QC procedure to ensure it met accuracy standards.
Classification: Segmentation - Image segmentation was completed at multiple scales using the multispectral (2.4 m) imagery in order to group like spectral and textural objects within the imagery. For consistency, the associated impervious data set was incorporated into the segmentation layer as a boundary delimiter. Segments can share boundaries of an impervious surface, but can never overlap an impervious surface. Automated Classification, Image segments are classified using a decision tree classifier in See5 software and an iterative nearest neighbor classifier in Definiens software. Nearest neighbor training data is collected through analyst interpretation or ancillary data sets and used to calibrate the classification algorithm.
Automated Classification Refinement - Models are built to refine or reclassify land cover areas by utilizing the wealth of attribute information linked to each segment within Definiens.
2020-06-30T00:00:00
2
Classification Edits - As with any automated or semi-automated land cover classification there are often inconsistencies in the land cover map. The final step before map finalization was to remove inaccuracies through manual segment labeling as interpreted by an analyst.
Map Finalization - Sanborn used independent reviewer's comments to further refine the land cover map. Attributes for this product are as follows: 0 Background 1 Unclassified 2 Impervious 3 4 5 Developed, Open Space 6 Cultivated Crops 7 Pasture/Hay 8 Grassland/Herbaceous 9 Deciduous Forest 10 Evergreen Forest 11 Mixed Forest 12 Scrub/Shrub 13 Palustrine Forested Wetland 14 Palustrine Scrub/Shrub Wetland 15 Palustrine Emergent Wetland 16 Estuarine Forested Wetland 17 Estuarine Scrub/Shrub Wetland 18 Estuarine Emergent Wetland 19 Unconsolidated Shore 20 Bare Land 21 Open Water 22 Palustrine Acquatic Bed
Late Date (2016) Classification: This section outlines the classification procedure for the Island of Guguan, CNMI High Resolution C-CAP. Non impervious features were mapped using a 0.5 acre minimum mapping unit (MMU).
Pre-processing steps:
The Worldview-2 mosaic utilized for this project was provided from United States Department of Agriculture, Natural Resources Conservation Service as an orthorectifed, georeferenced product.
Classification:
Segmentation - Image segmentation was completed at multiple scales using the multispectral (2.4 m) imagery in order to group like spectral and textural objects within the imagery. For consistency with previous land cover mapping efforts, the generation of objects was partially constrained by the 2004 NOAA Guguan C-CAP land cover product.
Classification- The image segements from the 2016 Worldview-2 imagery were overlaid on imagery and analysts counducted a visual analysis to identify areas of change.
Map Finalization - NOAA OCM performed two rounds of internal product review. Reviewer comments were incorporated to further refine the final land cover product.
Attributes for this product are as follows:
0 Background
1 Unclassified
2 Impervious
3
4
5 Developed, Open Space
6 Cultivated Crops
7 Pasture/Hay
8 Grassland/Herbaceous
9 Deciduous Forest
10 Evergreen Forest
11 Mixed Forest
12 Scrub/Shrub
13 Palustrine Forested Wetland
14 Palustrine Scrub/Shrub Wetland
15 Palustrine Emergent Wetland
16 Estuarine Forested Wetland
17 Estuarine Scrub/Shrub Wetland
18 Estuarine Emergent Wetland
19 Unconsolidated Shore
20 Bare Land
21 Open Water
22 Palustrine Acquatic Bed
Post-Processing Steps:
A GIS matrix algorithm was run with 2004 and 2016 datasets as inputs. The algorithm generates
a from-to file where each combination is uniquely labeled from 1 to 481.
2020-06-30T00:00:00
gov.noaa.nmfs.inport:60205
Erik Hund
2020-07-07T13:47:44
SysAdmin InPortAdmin
2023-07-03T17:07:52
2020-07-07
Office for Coastal Management
OCM
1002
Public
No
2020-07-07
1 Year
2021-07-07