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OLI Resources
Earthdata resources for users working with NASA’s Operational Land Imager (OLI) include tutorials and other learning resources, news announcements such as instrument updates and data releases, user guides and related documents, and frequently asked questions.
OLI Learning Resources
FIRMS has incorporated additional capabilities into the HLS dropdown menu of its interactive map, including four vegetation indices and the ability for user to create their own red, green, blue (RGB) image composites through the TiTiler-CMR service.
Tutorial
April 29, 2026
This three-part ARSET training covers flood monitoring via remote sensing, NASA flood products, and GEOGLOWS streamflow predictions.
Training
June 18-25, 2026
Create your own Harmonized Landsat Sentinel 2 (HLS) image composite or select from a preset list.
Tutorial
April 29, 2026
This ARSET training covers how to acquire, use, and derive NDVI imagery from Landsat and MODIS.
Training
Feb. 10 - March 2, 2016
This ARSET training explores how the R statistical coding language can be used to classify land cover and quantify changes in land cover over time.
Training
Feb. 24-26, 2026
This ARSET training introduces STREAM, a web tool for monitoring chlorophyll-a concentration, Secchi disk depth, and total suspended solids in inland lakes and coastal regions.
Training
Feb. 10-17, 2026
Using SNWG's OPERA DSWx product, USGS is able to monitor streamflow from space, augmenting hazardous in-person collection techniques.
Data in Action
July 8, 2025
Learn how to search for, access, and process HLS data.
External Resource
GitHub Repository
Sept. 20, 2024
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To celebrate GIS Day, take a peek at these illuminating examples of NASA Earth Science leveraging Geographic Information Systems (GIS) to understand our home planet.
News
Nov. 20, 2024
False-color reflectance image of burned areas near the Greek town of Marathon acquired on Aug 18, 2024.
Worldview Image of the Week
Aug. 22, 2024
Assessment of the 2022 Satellite Needs Working Group (SNWG) survey identified six science activities to address U.S. Federal civilian agency satellite needs.
News
July 18, 2024
A combination of Landsat and Sentinel-2 imagery, NASA near real-time data, and machine learning provides near real-time access to high-resolution water quality maps.
News
June 27, 2024
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Frequently Asked Questions
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