These Landsat 7 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.
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_1
60 meters
10.40 - 12.50 μm
Low-gain Thermal Infrared 1. This band has expanded dynamic range
and lower radiometric resolution (sensitivity), with less
saturation at high Digital Number (DN) values. Resampled from
60m to 30m.
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.
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 7 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 …
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["The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/LE07/C01/T1_32DAY_TOA dataset provides 32-day composites of Landsat 7 Collection 1 Tier 1 scenes."],["These composites use top-of-atmosphere (TOA) reflectance and are created from all scenes within each 32-day period."],["The dataset covers the period from 1999-01-01 to 2021-12-19 and includes various spectral bands, including blue, green, red, near infrared, and shortwave infrared."],["Landsat data is public domain and can be used freely with proper USGS acknowledgement."],["The dataset is available through Google Earth Engine."]]],[]]
