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The Open-source Project for a Network Data Access Protocol (OPeNDAP), developed at the University of Rhode Island, enables remote datasets to be accessed through familiar data analysis and visualization packages, just as if they resided locally on the user's machine. OPeNDAP handles transport, translation, and subsetting of data residing in most Earth science data formats, and provides tools for transforming existing applications into OPeNDAP clients (for example, enabling them to remotely access OPeNDAP served data). View OPeNDAP documentation and resources.

OPeNDAP requires the use of Earthdata Login account. Watch our video tutorial to learn how to sign up for an account.

Tool at a Glance

OPeNDAP News

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The  Climate Prediction Center (CPC) 4 km Infrared (IR) dataset archive now extends back to January 1998, offering over 25 years of high-resolution infrared observations and continuing into the present.
News
June 20, 2025
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OPeNDAP Learning Resources

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Join us on Tuesday, 15 March 2016, 2 - 3 PM ET​ to learn about web based services at the NASA Land Processes DAAC. Participants will learn how to interact with and use them, and will see how LP DAAC utilized them to build User Interfaces such as AppEEARS, a point-based extraction tool.
Webinar
April 15, 2022
Learn how to use the Application for Extracting and Exploring Analysis Ready Samples (AppEEARS) data tool to retrieve analysis-ready data.
Tutorial
April 11, 2016
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While NASA data are openly available without restriction, an Earthdata Login is required to download data and to use some tools with full functionality.

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Frequently Asked Questions

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