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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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Image captured on Feb 18, 2024, by the MSI instrument aboard ESA's Sentinel 2B satellite.
Worldview Image of the Week
Feb. 22, 2024
The open-source Cyanobacteria Finder (CyFi) uses machine learning to pinpoint areas that may contain harmful algal blooms in lakes, reservoirs, rivers, and other small water bodies.
Blog
Feb. 13, 2024
NASA researchers are tweaking algorithms and combining data from multiple satellites to track tropical forest fires in Brazil.
Feature Article
Feb. 1, 2024
Image captured on Jan 20, 2024, by the OLI and OLI-2 instruments aboard the NASA/USGS Landsat 8 and 9 satellites.
Worldview Image of the Week
Jan. 25, 2024
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Frequently Asked Questions
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