AI-generated Key Takeaways
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The LANDSAT/LE7_TOA_1YEAR dataset provides annual Landsat 7 composites from 1999 to 2014, created using all images with non-negative sun elevation.
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Reflectance values for bands B1-B5 and B7 are scaled to 8 bits (0-255), while band B6_VCID_2 represents temperature in Kelvin-100.
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These composites are freely available for research, education, and nonprofit use through Google Earth Engine.
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Landsat data is public domain; however, users should acknowledge the USGS as the data source in any publications or presentations.
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The dataset includes spectral bands ranging from blue to shortwave infrared, with a pixel size of 30 meters for most bands and 60 meters for the thermal band.
- Dataset Availability
- 1999-01-01T00:00:00Z–2014-01-01T00:00:00Z
- Dataset Provider
- Tags
Description
These 1-year composites were created from all Landsat 7 images in the specified composite period, excluding images marked with a negative sun elevation in their metadata. The composites were created using the ee.Algorithms.Landsat.simpleComposite() method with its default settings. Reflectance ([0,1]) in bands B1, B2, B3, B4, B5, and B7 is scaled to 8 bits ([0,255]) and temperature in band B6_VCID_2 is converted to units of Kelvin-100.
Bands
Bands
| Name | Pixel Size | Wavelength | Description |
|---|---|---|---|
B1 |
30 meters | 0.45 - 0.52 μm | Blue |
B2 |
30 meters | 0.52 - 0.60 μm | Green |
B3 |
30 meters | 0.63 - 0.69 μm | Red |
B4 |
30 meters | 0.77 - 0.90 μm | Near infrared |
B5 |
30 meters | 1.55 - 1.75 μm | Shortwave infrared 1 |
B6_VCID_2 |
60 meters | 10.40 - 12.50 μm | High-gain Thermal Infrared 1. This band has higher radiometric resolution (sensitivity), although it has a more restricted dynamic range. Resampled from 60m to 30m. |
B7 |
30 meters | 2.08 - 2.35 μm | Shortwave infrared 2 |
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.