These Landsat 8 Collection 1 Tier 1 composites are made from Tier 1 orthorectified scenes, using the
computed top-of-atmosphere (TOA) reflectance.
See Chander et al. (2009)
for details on the TOA computation.
These composites are created from
all the scenes in each
8-day period beginning from the first day of the year and continuing
to the 360th day of the year. The last composite of the year,
beginning on day 361, will overlap the first composite of the
following year by 3 days. All the images from each 8-day period are
included in the composite, with the most recent pixel as the composite value.
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
These Landsat 8 Collection 1 Tier 1 composites are made from Tier 1 orthorectified scenes, using the computed top-of-atmosphere (TOA) reflectance. See Chander et al. (2009) for details on the TOA computation. These composites are created from all the scenes in each 8-day period beginning from the first day of …
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eProvides Landsat 8 Collection 1 Tier 1 8-day composites, created from orthorectified scenes using top-of-atmosphere (TOA) reflectance.\u003c/p\u003e\n"],["\u003cp\u003eIncludes spectral bands ranging from coastal aerosol to thermal infrared, with varying spatial resolutions (15m, 30m).\u003c/p\u003e\n"],["\u003cp\u003eOffers data from April 7, 2013, to January 1, 2022, with composites covering 8-day periods.\u003c/p\u003e\n"],["\u003cp\u003eResides in the public domain and can be used freely with proper USGS acknowledgment.\u003c/p\u003e\n"],["\u003cp\u003eAccessible through Google Earth Engine for analysis and visualization.\u003c/p\u003e\n"]]],["The Landsat 8 dataset, provided by Google, spans from April 7, 2013, to January 1, 2022, and includes 8-day composites of Tier 1 orthorectified scenes with top-of-atmosphere (TOA) reflectance. Composites are generated from all images in each 8-day period, using the most recent pixel as the composite value. The dataset comprises 11 bands with varying spatial and spectral resolutions, in addition to a quality assessment (BQA) band. Landsat data is in the public domain and may be used freely with proper USGS citation.\n"],null,["Dataset Availability\n: 2013-04-07T00:00:00Z--2022-01-01T00:00:00Z\n\nDataset Provider\n:\n\n\n [Google](https://earthengine.google.com)\n\nTags\n:\n[8day](/earth-engine/datasets/tags/8day) [landsat](/earth-engine/datasets/tags/landsat) [toa](/earth-engine/datasets/tags/toa) [usgs](/earth-engine/datasets/tags/usgs) \n\nDescription \nThese Landsat 8 Collection 1 Tier 1 composites are made from Tier 1 orthorectified scenes, using the\ncomputed top-of-atmosphere (TOA) reflectance.\nSee [Chander et al. (2009)](https://www.sciencedirect.com/science/article/pii/S0034425709000169)\nfor details on the TOA computation.\n\nThese composites are created from\nall the scenes in each\n8-day period beginning from the first day of the year and continuing\nto the 360th day of the year. The last composite of the year,\nbeginning on day 361, will overlap the first composite of the\nfollowing year by 3 days. All the images from each 8-day period are\nincluded in the composite, with the most recent pixel as the composite value.\n\nBands\n\n**Bands**\n\n| Name | Pixel Size | Wavelength | Description |\n|-------|------------|------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `B1` | 30 meters | 0.43 - 0.45 μm | Coastal aerosol |\n| `B2` | 30 meters | 0.45 - 0.51 μm | Blue |\n| `B3` | 30 meters | 0.53 - 0.59 μm | Green |\n| `B4` | 30 meters | 0.64 - 0.67 μm | Red |\n| `B5` | 30 meters | 0.85 - 0.88 μm | Near infrared |\n| `B6` | 30 meters | 1.57 - 1.65 μm | Shortwave infrared 1 |\n| `B7` | 30 meters | 2.11 - 2.29 μm | Shortwave infrared 2 |\n| `B8` | 15 meters | 0.52 - 0.90 μm | Band 8 Panchromatic |\n| `B9` | 15 meters | 1.36 - 1.38 μm | Cirrus |\n| `B10` | 30 meters | 10.60 - 11.19 μm | Thermal infrared 1, resampled from 100m to 30m |\n| `B11` | 30 meters | 11.50 - 12.51 μm | Thermal infrared 2, resampled from 100m to 30m |\n| `BQA` | 30 meters | | Landsat Collection 1 QA Bitmask ([See Landsat QA page](https://www.usgs.gov/land-resources/nli/landsat/landsat-collection-1-level-1-quality-assessment-band)) |\n| Bitmask for BQA - Bit 0: Designated Fill - 0: No - 1: Yes - Bit 1: Terrain Occlusion - 0: No - 1: Yes - Bits 2-3: Radiometric Saturation - 0: No bands contain saturation - 1: 1-2 bands contain saturation - 2: 3-4 bands contain saturation - 3: 5 or more bands contain saturation - Bit 4: Cloud - 0: No - 1: Yes - Bits 5-6: Cloud Confidence - 0: Not Determined / Condition does not exist. - 1: Low, (0-33 percent confidence) - 2: Medium, (34-66 percent confidence) - 3: High, (67-100 percent confidence) - Bits 7-8: Cloud Shadow Confidence - 0: Not Determined / Condition does not exist. - 1: Low, (0-33 percent confidence) - 2: Medium, (34-66 percent confidence) - 3: High, (67-100 percent confidence) - Bits 9-10: Snow / Ice Confidence - 0: Not Determined / Condition does not exist. - 1: Low, (0-33 percent confidence) - 2: Medium, (34-66 percent confidence) - 3: High, (67-100 percent confidence) - Bits 11-12: Cirrus Confidence - 0: Not Determined / Condition does not exist. - 1: Low, (0-33 percent confidence) - 2: Medium, (34-66 percent confidence) - 3: High, (67-100 percent confidence) ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\nTerms of Use\n\n**Terms of Use**\n\nLandsat datasets are federally created data\nand therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.\n\nAcknowledgement or credit of the USGS as data source should be provided\nby including a line of text citation such as the example shown below.\n\n(Product, Image, Photograph, or Dataset Name) courtesy of\nthe U.S. Geological Survey\n\nExample: Landsat-7 image courtesy of the U.S. Geological Survey\n\nSee the\n[USGS Visual Identity System Guidance](https://www.usgs.gov/information-policies-and-instructions/usgs-visual-identity-system)\nfor further details on proper citation and acknowledgement of USGS products.\n**Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine) \n[Landsat 8 Collection 1 Tier 1 8-Day TOA Reflectance Composite](/earth-engine/datasets/catalog/LANDSAT_LC08_C01_T1_8DAY_TOA) \nThese Landsat 8 Collection 1 Tier 1 composites are made from Tier 1 orthorectified scenes, using the computed top-of-atmosphere (TOA) reflectance. See Chander et al. (2009) for details on the TOA computation. These composites are created from all the scenes in each 8-day period beginning from the first day of ... \nLANDSAT/LC08/C01/T1_8DAY_TOA, 8day,landsat,toa,usgs \n2013-04-07T00:00:00Z/2022-01-01T00:00:00Z \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://earthengine.google.com)"]]
