- Dataset Availability
- 1984-03-16T16:20:00Z–2012-05-05T17:54:06Z
- Dataset Provider
- USGS
- Earth Engine Snippet
-
ee.ImageCollection("LANDSAT/LT05/C01/T1_SR")
- Tags
Description
This dataset is the atmospherically corrected surface reflectance from the Landsat 5 ETM sensor. These images contain 4 visible and near-infrared (VNIR) bands and 2 short-wave infrared (SWIR) bands processed to orthorectified surface reflectance, and one thermal infrared (TIR) band processed to orthorectified brightness temperature. The VNIR and SWIR bands have a resolution of 30m / pixel. The TIR band, while originally collected with a resolution of 120m / pixel (60m / pixel for Landsat 7) has been resampled using cubic convolution to 30m.
These data have been atmospherically corrected using LEDAPS, and include a cloud, shadow, water and snow mask produced using CFMASK, as well as a per-pixel saturation mask.
Strips of collected data are packaged into overlapping "scenes" covering approximately 170km x 183km using a standardized reference grid.
Note that Landsat 7's orbit has been drifting to an earlier acquisition time since 2017.
See also the USGS page on SR QA bands.
SR can only be produced for Landsat assets processed to the L1TP level
Data provider notes:
- SR is not run for a scene with a solar zenith angle greater than 76°.
- Users are cautioned to avoid using SR for data acquired over high latitudes (> 65°).
- The panchromatic band (ETM+ Band 7, OLI Band 8) is not processed to Surface Reflectance.
- Efficacy of SR correction will be likely reduced in areas
where atmospheric correction is affected by adverse conditions:
- Hyper-arid or snow-covered regions
- Low sun angle conditions
- Coastal regions where land area is small relative to adjacent water
- Areas with extensive cloud contamination
This product is generated by Google using a Docker image supplied by USGS.
Bands
Resolution
30 meters
Bands
| Name | Units | Scale | Wavelength | Description | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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B1 |
0.0001 | 0.45-0.52 μm | Band 1 (blue) surface reflectance |
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B2 |
0.0001 | 0.52-0.60 μm | Band 2 (green) surface reflectance |
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B3 |
0.0001 | 0.63-0.69 μm | Band 3 (red) surface reflectance |
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B4 |
0.0001 | 0.77-0.90 μm | Band 4 (near infrared) surface reflectance |
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B5 |
0.0001 | 1.55-1.75 μm | Band 5 (shortwave infrared 1) surface reflectance |
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B6 |
K | 0.1 | 10.40-12.50 μm | Band 6 brightness temperature. While originally collected with a resolution of 120m / pixel (60m / pixel for Landsat 7), this band has been resampled using cubic convolution to 30m. |
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B7 |
0.0001 | 2.08-2.35 μm | Band 7 (shortwave infrared 2) surface reflectance |
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sr_atmos_opacity |
0.001 | Atmospheric opacity; < 0.1 = clear; 0.1 - 0.3 = average; > 0.3 = hazy |
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sr_cloud_qa |
Cloud quality attributes. Note: pixel_qa is likely to present more accurate results than sr_cloud_qa for cloud masking. See page 14 in the LEDAPS product guide. |
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pixel_qa |
Pixel quality attributes generated from the CFMASK algorithm. |
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radsat_qa |
Radiometric saturation QA |
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Image Properties
Image Properties
| Name | Type | Description |
|---|---|---|
| CLOUD_COVER | DOUBLE | Percentage cloud cover (0-100), -1 = not calculated. (Obtained from raw Landsat metadata) |
| CLOUD_COVER_LAND | DOUBLE | Percentage cloud cover over land (0-100), -1 = not calculated. (Obtained from raw Landsat metadata) |
| EARTH_SUN_DISTANCE | DOUBLE | Earth-Sun distance (AU) |
| ESPA_VERSION | STRING | Internal ESPA image version used to compute SR |
| GEOMETRIC_RMSE_MODEL | DOUBLE | Combined RMSE (Root Mean Square Error) of the geometric residuals (meters) in both across-track and along-track directions. (Obtained from raw Landsat metadata) |
| GEOMETRIC_RMSE_MODEL_X | DOUBLE | RMSE (Root Mean Square Error) of the geometric residuals (meters) measured on the GCPs (Ground Control Points) used in geometric precision correction in the along-track direction. (Obtained from raw Landsat metadata) |
| GEOMETRIC_RMSE_MODEL_Y | DOUBLE | RMSE (Root Mean Square Error) of the geometric residuals (meters) measured on the GCPs (Ground Control Points) used in geometric precision correction in the across-track direction. (Obtained from raw Landsat metadata) |
| IMAGE_QUALITY | INT | Image quality, 0 = worst, 9 = best, -1 = quality not calculated. (Obtained from raw Landsat metadata) |
| LANDSAT_ID | STRING | Landsat Product Identifier (Collection 1) |
| LEVEL1_PRODUCTION_DATE | INT | Date of production for raw Level 1 data as ms since epoch |
| PIXEL_QA_VERSION | STRING | Version of the software used to produce the 'pixel_qa' band |
| SATELLITE | STRING | Name of satellite |
| SENSING_TIME | STRING | Time of the observations as in ISO 8601 string. (Obtained from raw Landsat metadata) |
| SOLAR_AZIMUTH_ANGLE | DOUBLE | Solar azimuth angle |
| SR_APP_VERSION | STRING | LEDAPS version used to process surface reflectance |
| WRS_PATH | INT | WRS path number of scene |
| WRS_ROW | INT | WRS row number of scene |
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.