We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.
Read about the Web Unification Project
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
SHOWING 8 OF 82
Users of NASA’s Fire Information for Resource Management System (FIRMS) can now differentiate between fires caused by burning vegetation and fires from natural heat sources or industrial heat sources.
Blog
March 7, 2025
A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in February 2025.
News
March 6, 2025
These new vegetation indices offer the same near-global coverage, and 30-meter spatial resolution as the initial HLS products.
News
Feb. 19, 2025
Image captured on February 2, 2025, from the OLI instrument aboard the Landsat 8 satellite.
Worldview Image of the Week
Feb. 6, 2025
SHOWING 4 OF 66
Frequently Asked Questions
Earthdata Forum
Our online forum provides a space for users to browse thousands of FAQs about research needs, data, and data applications. You can also submit new questions for our experts to answer.
Submit Questions to Earthdata Forumand View Expert Responses