These Landsat 4 TM 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 32-day period beginning from the first day of the year and
continuing to the 352nd day of the year. The last composite of the
year, beginning on day 353, will overlap the first composite of the
following year by 20 days. All the images from each 32-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 4 TM 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 32-day period beginning from the first day …
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["The Landsat 4 TM Collection 1 Tier 1 32-Day TOA Reflectance Composite dataset provides 32-day top-of-atmosphere (TOA) reflectance composites from Landsat 4 TM scenes."],["The dataset covers the period from August 13, 1982, to November 17, 1993, with a spatial resolution of 30 meters."],["Composites are created from all scenes within each 32-day period, using the most recent pixel as the composite value."],["Spectral bands include blue, green, red, near-infrared, two shortwave infrared bands, thermal infrared, and a quality assessment band."],["The dataset is provided by the USGS and is freely available for research, education, and non-profit use through Google Earth Engine."]]],["The Landsat 4 TM dataset, available from 1982-08-13 to 1993-11-17, provides 32-day composites of Tier 1 orthorectified scenes, computed using top-of-atmosphere (TOA) reflectance. Composites are generated by combining all scenes within each 32-day period, with the most recent pixel values used. The dataset includes seven spectral bands (blue to shortwave infrared) and a quality assessment bitmask. Data is free for research, education, and nonprofit use.\n"]]
