| Section 1 | Overview | |||
| Originator | Natural Resources Research Institute, University of Minnesota | |||
| Title | Normalized Difference Water Index | |||
| Abstract | A Normalized Difference Vegetation Index (NDVI) indicates where water is located on the landscape. This NDVI was calculated for the period of June 2015 through Febuary 2018 at a resolution of 10 meters. | |||
| Purpose | Water presence assessment. | |||
| Time Period of Content Date | Jun 23, 2015 - Feb 28, 2018 | |||
| Currentness Reference | ||||
| Progress | Complete | |||
| Maintenance and Update Frequency | As needed | |||
| Spatial Extent of Data | Minnesota | |||
| Bounding Coordinates | -97.23 -89.53 49.37 43.5 | |||
| Place Keywords | Minnesota | |||
| Theme Keywords | imageryBaseMapsEarthCover, water, NDWI | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Categories | |||
| Access Constraints | None | |||
| Use Constraints | This data is licensed under the Creative Commons CC BY 4.0. https://creativecommons.org/licenses/by/4.0/ | |||
| Contact Person Information | Kris Johnson,
GIS Specialist Natural Resources Research Institute, University of Minnesota 5013 Miller Trunk Highway Duluth, MN 55811 Phone: 218-726-6226 Email: kristofj@d.umn.edu | |||
| Browse Graphic | None available | |||
| Associated Data Sets | ||||
| Section 2 | Data Quality | |||
| Attribute Accuracy | ||||
| Logical Consistency | ||||
| Completeness | ||||
| Horizontal Positional Accuracy | ||||
| Lineage | Developed using Google Earth Engine Sentinel-2 satellite imagery. For more information on the Sentinel-2 imagery: https://explorer.earthengine.google.com/#detail/COPERNICUS%2FS2
Script used to derive data: https://code.earthengine.google.com/774e4ed152e4651971dc6e9456998d17 Methods: This is a composite image where each pixel is selected based on the NDWI function (Green-NIR/Green+NIR). This composite thus represents the highest NDWI for every pixel for that location captured by Sentinel-2. Funding Development of this data was supported by a direct appropriation from the Minnesota State Legislature to the Natural Resources Research Institute as part of the Minnesota Mining and Water Innovation Initiative. | |||
| Section 3 | Spatial Data Organization (not used in this metadata) | |||
| Section 4 | Coordinate System | |||
| Horizontal Coordinate Scheme | Universal Transverse Mercator | |||
| UTM Zone Number | 15 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | meters | |||
| Cell Width | 10 | |||
| Cell Height | 10 | |||
| Section 5 | Attributes | |||
| Overview | ||||
| Detailed Citation | ||||
| Table Detail: | ||||
| NDWI Attribute Table | |||
| Field Name | Valid Values | Definition | Definition Source |
|---|---|---|---|
| nodata | enumerated | ||
| -9999 | |||
| NDWI | -1 to 1 | -1 indicates an absence of water or non-aqueous surfaces, -0.2 to 0.2 indicates vegetation or built up areas, and values above 0.5 indicates water surfaces. | |
| Section 6 | Distribution | |||
| Publisher | Natural Resources Research Institute, University of Minnesota | |||
| Publication Date | 03/05/2018 | |||
| Contact Person Information | Catalog Manager,
Natural Resources Research Institute, University of Minnesota 5013 Miller Trunk Highway Duluth, MN 55803 Phone: 218-788-2694 Email: nrri-gis@d.umn.edu | |||
| Distributor's Data Set Identifier | ||||
| Distribution Liability | ||||
| Ordering Instructions | ||||
| Online Linkage | None available | |||
| Section 7 | Metadata Reference | |||
| Metadata Date | 03/05/2018 | |||
| Contact Person Information | Catalog Manager,
Natural Resources Research Institute, University of Minnesota 5013 Miller Trunk Highway Duluth, MN 55803 Phone: 218-788-2694 Email: nrri-gis@d.umn.edu | |||
| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.2 | |||
| Metadata Standard Online Linkage | http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm | |||