These Landsat 4 TM composites are made from Level L1T orthorectified scenes, using the
computed top-of-atmosphere (TOA) reflectance. See Chander et al.
(2009)
for details on the TOA computation.
As of May 1, 2017, the USGS is no longer producing Pre-Collection Landsat, and therefore this collection is complete. Please switch to a Collection 1-based dataset. See this documentation page for more information.
The Normalized Difference Vegetation Index is
generated from the Near-IR and Red bands of each scene as (NIR - Red) /
(NIR + Red), and ranges in value from -1.0 to 1.0.
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.
Bands
Bands
Name
Min
Max
Pixel Size
Description
NDVI
-1*
1*
30 meters
Normalized Difference Vegetation Index
* estimated min or max value
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
These Landsat 4 TM composites are made from Level L1T orthorectified scenes, using the computed top-of-atmosphere (TOA) reflectance. See Chander et al. (2009) for details on the TOA computation. As of May 1, 2017, the USGS is no longer producing Pre-Collection Landsat, and therefore this collection is complete. Please switch …
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["This Landsat 4 TM dataset provides 8-day Normalized Difference Vegetation Index (NDVI) composites derived from Level L1T orthorectified scenes."],["The dataset covers the period from August 21, 1982, to December 11, 1993, and is now complete, superseded by a Collection 1-based dataset."],["NDVI values range from -1.0 to 1.0 and are calculated as (NIR - Red) / (NIR + Red) using top-of-atmosphere reflectance."],["The dataset is in the public domain and can be used without copyright restrictions, but users should acknowledge the USGS as the data source."],["Users are encouraged to switch to the updated LANDSAT/LT04/C01/T1_8DAY_NDVI dataset for continued data access."]]],["This Landsat 4 dataset, provided by USGS, contains 8-day Normalized Difference Vegetation Index (NDVI) composites from 1982 to 1993. Images are derived from Level L1T orthorectified scenes with top-of-atmosphere reflectance. USGS discontinued Pre-Collection Landsat production on May 1, 2017. Data users are directed to transition to Collection 1-based datasets and note that the collection is now complete. The NDVI values range from -1 to 1. Data is in the public domain.\n"]]
