Page Summary
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This dataset, consisting of Landsat 5 TM composites, has been superseded and is complete as of May 1, 2017, with users advised to switch to a Collection 1-based dataset.
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The dataset provides the Normalized Difference Water Index (NDWI), a measure sensitive to the liquid water content of vegetation, with values ranging from -1.0 to 1.0.
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Composites are created annually from all scenes within each year, using the most recent pixel value.
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The dataset is available from 1984-01-01T00:00:00Z to 2012-01-01T00:00:00Z and is provided by the USGS.
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Landsat datasets are public domain and can be used without copyright restriction, though acknowledgement of the USGS is recommended.
- Dataset Availability
- 1984-01-01T00:00:00Z–2012-01-01T00:00:00Z
- Dataset Provider
- USGS
- Tags
Description
These Landsat 5 TM composites are made from Level L1T orthorectified scenes, using the computed top-of-atmosphere (TOA) reflectance. See Chander et al. (2009) for details on the TOA computation.
As of May 1, 2017, the USGS is no longer producing Pre-Collection Landsat, and therefore this collection is complete. Please switch to a Collection 1-based dataset. See this documentation page for more information.
The Normalized Difference Water Index (NDWI) is sensitive to changes in liquid water content of vegetation canopies. It is derived from the Near-IR band and a second IR band, ≈1.24μm when available and the nearest available IR band otherwise. It ranges in value from -1.0 to 1.0. See Gao (1996) for details.
These composites are created from all the scenes in each annual period beginning from the first day of the year and continuing to the last day of the year. All the images from each year are included in the composite, with the most recent pixel as the composite value.
Bands
Bands
| Name | Pixel Size | Description |
|---|---|---|
NDWI |
30 meters | Normalized Difference Water Index |
Terms of Use
Terms of Use
Landsat datasets are federally created data and therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.
Acknowledgement or credit of the USGS as data source should be provided by including a line of text citation such as the example shown below.
(Product, Image, Photograph, or Dataset Name) courtesy of the U.S. Geological Survey
Example: Landsat-7 image courtesy of the U.S. Geological Survey
See the USGS Visual Identity System Guidance for further details on proper citation and acknowledgement of USGS products.