Landsat-Based Land Cover of 2002 in Twin Cities Metropolitan Area Metadata

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Landsat-Based Land Cover of 2002 in Twin Cities Metropolitan Area


This page last updated:Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Remote Sensing and Geospatial Analysis Laboratory, University of Minnesota
Abstract Raster-based land cover data set derived from 30 meter resolution Thematic Mapper satellite imagery. The coverage consists of 7 classes including: agriculture, extraction, forest, grass, urban, water, and wetland.
Browse Graphic View a sample of the data
Time Period of Content Date
Currentness Reference Landsat imagery of May 21 and July 16, 2002
Access Constraints The Remote Sensing and Geospatial and Analysis Laboratory, University of Minnesota, has attempted to produce accurate maps, statistics and information of land cover and impervious surface area. However, it makes no representation or warranties, either expressed or implied, for the data accuracy, currency, suitability or reliability for any particular purpose. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the source data and processing may be present in the data supplied. Users are reminded that all geospatial maps and data are subject to errors in positional and thematic accuracy. The user accepts the data “as is” and assumes all risks associated with its use. The University of Minnesota and the Metropolitan Council assume no responsibility for actual or consequential damage incurred as a result of any user's reliance on the data. The data are the intellectual property of the University of Minnesota.
Use Constraints This data may be used for educational and non-commercial purposes, provided proper attribution is given. Secondary distribution of the data is permitted, but not supported by the University of Minnesota. By accepting the data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user includes with the data a copy of this disclaimer.
Distributor Organization Remote Sensing and Geospatial Analysis Lab, Univeristy of Minnesota
Ordering Instructions see website or contact info
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.


Full metadata for Landsat-Based Land Cover of 2002 in Twin Cities Metropolitan Area


Go to Section:
1. Identification_Information
2. Data_Quality_Information
3. Spatial_Data_Organization_Information
4. Spatial_Reference_Information
5. Entity_and_Attribute_Information
6. Distribution_Information
7. Metadata_Reference_Information


Section 1 Identification Information Top of page
Originator Remote Sensing and Geospatial Analysis Laboratory, University of Minnesota
Title Landsat-Based Land Cover of 2002 in Twin Cities Metropolitan Area
Abstract Raster-based land cover data set derived from 30 meter resolution Thematic Mapper satellite imagery. The coverage consists of 7 classes including: agriculture, extraction, forest, grass, urban, water, and wetland.
Purpose
Time Period of Content Date
Currentness Reference Landsat imagery of May 21 and July 16, 2002
Progress Complete
Maintenance and Update Frequency None planned
Spatial Extent of Data Twin City Metro Area, 7 county metro area of Minneapolis and St. Paul Minnesota
Bounding Coordinates -94.031165
-92.719441
45.421386
44.460328
Place Keywords Minnesota, Minnespolis, St. Paul, Carver County, Dakota County, Hennepin County, Ramsey County, Scott County, Washington County
Theme Keywords
Theme Keyword Thesaurus
Access Constraints The Remote Sensing and Geospatial and Analysis Laboratory, University of Minnesota, has attempted to produce accurate maps, statistics and information of land cover and impervious surface area. However, it makes no representation or warranties, either expressed or implied, for the data accuracy, currency, suitability or reliability for any particular purpose. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from the source data and processing may be present in the data supplied. Users are reminded that all geospatial maps and data are subject to errors in positional and thematic accuracy. The user accepts the data “as is” and assumes all risks associated with its use. The University of Minnesota and the Metropolitan Council assume no responsibility for actual or consequential damage incurred as a result of any user's reliance on the data. The data are the intellectual property of the University of Minnesota.
Use Constraints This data may be used for educational and non-commercial purposes, provided proper attribution is given. Secondary distribution of the data is permitted, but not supported by the University of Minnesota. By accepting the data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user includes with the data a copy of this disclaimer.
Contact Person Information Marvin Bauer, Professor
Remote Sensing and Geospatial Analysis Lab, Univeristy of Minnesota
1530 Cleveland Avenue North
St. Paul , MN 55108
Phone: (612)624-3703
Fax: (612)625-5212
Email : mbauer@umn.edu
Browse Graphic View a sample of the data
Browse Graphic File Description
Associated Data Sets Additional years of metro and statewide land cover is available.

Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy Producer’s User’s
Agriculture 95.8 96.4
Forest 97.3 88.8
Grass 98.1 78.9
Urban 89.6 99.8
Water 95.9 96.7
Wetland 81.9 84.3

The reference data for the 2002 classification were acquired
from three sources. The primary data was a field verified set of
reference sites collected in the fall of 2002. This data set was
created by collecting cover type information for a stratified
random sample of 300 points with 60 points per level 1 class
(excluding extraction and water). The strata were from a previous
classification of 2000 Landsat TM imagery (Yuan et al.,
2005). At each sample point a field computer with ArcPad GIS
and GPS was used to digitize a polygon of the area of the 2002
cover type identified, along with other cover types in the vicinity
of the randomly generated point. This procedure resulted in 646
reference sites. The second source of data was a randomly
selected forest cover type data set with 425 additional polygons,
created and field verified during the summer of 2002 by
Loeffelholz (2004). The third source was 30 small grain fields
derived from interpretation of high-resolution color DOQs
acquired in the summer of 2002. The 1101 potential reference
sites were buffered by 30 m to avoid boundary pixels, leaving
672 polygons (0.75% of the total pixels) from which 354 sites
were selected for training and 318 for testing.

Logical Consistency
Completeness Data provides coverage over the stated extent of the 7 county area.
Horizontal Positional Accuracy
Lineage
Landsat-7 Enhanced Thematic Mapper plus multi-temporal imagery was classified over county-based areas using a supervised maximum likelihood classification within Erdas/Imagine software. A 3 by 3 majority filter was performed in post-processing step to remove the salt-and-pepper effect.

More information available from article "Land cover classification and change analysis of the Twin Cities (Minnesota)
Metropolitan Area by multitemporal Landsat remote sensing"
http://land.umn.edu/pubs.html

Source Scale Denominator

Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment Erdas Imagine 8.5
Geographic Reference for Tabular Data
Spatial Object Type Raster
Vendor Specific Object Types
Tiling Scheme

Section 4 Spatial Reference Information Top of full metadata Top of page
Horizontal Coordinate Scheme Universal Transverse Mercator
Ellipsoid Geodetic Reference System 80
Horizontal Datum NAD83
Horizontal Units Meters
Distance Resolution 30
Altitude Datum Not applicable
Depth Datum Not applicable
Cell Width 30.000000
Cell Height 30.000000
UTM Zone Number 15

Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview agriculture = tan
extraction = orange
forest = dark green
grass = light green
urban = white
water = blue
wetland = purple
Entity and Attribute Detailed Citation Seven level one land cover classes are listed along with a detailed description below:

1. Urban/Developed -

An area containing any amount of impervious cover of man-made solid materials or compacted soils including areas with interspersed vegetation. Examples: parking lots, shopping malls, warehouses, industrail parks, highways, sparse development, single family residential developments, single lane roads, and mines.

2. Agriculture -

An area where the primary cover type during the growing season is an agricultural covertype including row crops, forage crops and small grains. Examples: corn, soybeans, alfalfa, oats, wheat and barley.

3. Grassland -

An upland area covered by cultivated or non-cultivated herbaceous vegetation predominated by grasses, grass-like plants and forbs. Includes non-agricultural upland vegetation dominated by short manicured grasses and forbs as well as non-cultivated herbaceous upland vegetation dominated by native grasses and forbs. Examples: golf courses, lawns, athletic fields, dry priaries and pastures.

4. Forest -

An upland area of land covered with woody perennial plants, the tree reaching a mature height of at least 6 feet tall with a definite crown. To be considered a forested cover type the stand must have a combined species minimum of 3 cords/acre or 1,251 bdft/acre or 251 stems per acre depending on size class (MNCSA Standards) Note: all forest training sites were obtained from the MNDNR Forest Inventory and Management (FIM) dataset and thus an effort was made to match the cover type descriptions between the two data sets within the limitations of remote sensing capabilities. Examples: white pine, red pine, oak, mixed conifer and mixed deciduous.

5. Water -

An area of open water with none or very little above surface vegetaton. Example:lakes, streams, rivers and open wetlands.

6. Wetland -

A lowland area with a cover of persistent and non-persistent herbaceous plants standing above the surface of wet soil or water. Examples: cattails, march grass, sedges and peat.

7. Shrubland -

An upland or lowland area with vegetation that has a persistent woody stem, generally with several basal shoots, low growth of less than 20 feet in height. Area has less than 251 stems per acre of commercial tree species, the shrub species are fairly uniformly distributed throughout and the density of the coverage is moderate to high. (Examples: alder, willow, buckthorn, hazel, sumac, and scrub oak) Note: all shrubland training sites were obtained from the MNDNR Forest Inventory (CSA) and thus an effort was made to match the cover type descriptions between the two data sets within the limitations of remote sensing capabilities.


Section 6 Distribution Information Top of full metadata Top of page
Publisher Remote Sensing and Geospatial Analysis Lab, Univeristy of Minnesota
Publication Date
Contact Person Information Marvin Bauer, Professor
Remote Sensing and Geospatial Analysis Lab, Univeristy of Minnesota
1530 Cleveland Avenue North
St. Paul , MN 55108
Phone: (612)624-3703
Fax: (612)625-5212
Email: mbauer@umn.edu
Distributor's Data Set Identifier class_02_fei_editfinal_filter.img
Distribution Liability This data may be used for educational and non-commercial purposes, provided proper attribution is given. Secondary distribution of the data is permitted, but not supported by the University of Minnesota. By accepting the data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user includes with the data a copy of this disclaimer.
Transfer Format Name Erdas/Imagine Export and GeoTiff
Transfer Format Version Number
Transfer Size 12 megabytes
Ordering Instructions see website or contact info
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date
Contact Person Information Marvin Bauer, Professor
Remote Sensing and Geospatial Analysis Lab, Univeristy of Minnesota
1530 Cleveland Avenue North
St. Paul , MN 55108
Phone: (612)624-3703
Fax: (612)625-5212
Email: mbauer@umn.edu
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.gis.state.mn.us/stds/metadata.htm


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