Data Access



File Transfer Protocol (FTP)

PO.DAAC's datasets are accessible via our anonymous FTP server.



Open-source Project for a Network Data Access Protocol (OPeNDAP)

OPeNDAP 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. For a list of PO.DAAC data accessible through OPeNDAP, see PO.DAAC OPeNDAP data. For the complete list of OPeNDAP datasets, please see the Unidata OPeNDAP Datasets list.

OPeNDAP data are accessible to users through: MATLABIDLFerretLive Access Server.


Thematic Realtime Environmental Distributed Data Services (THREDDS)

THREDDS Data Server (TDS) is a web server that provides metadata and data access for scientific datasets, using a variety of remote data access protocols (i.e.: OPeNDAP, OGC WMS and WCS, HTTP, etc.)

Webservices image

Web Services

PO.DAAC Web Services are application programming interfaces (APIs) that can be accessed through standard web protocols.  The W3C defines a Web Service in part as, "A software system designed to support interoperable machine-to-machine interaction over a network," (for the full definition, see ). The PO.DAAC Web Services use a Representational State Transfer (REST) model with calls issued over a Hypertext Transfer Protocol (HTTP) connection.  On receipt of a request message, our services return the response in either an Extensible Markup Language (XML) structure or, optionally, a JavaScript Object Notation (JSON) format.



State of the Ocean 2D (SOTO 2D)

State of the Ocean 2D provides near real-time data layers (vector and image) that are visualized in an HTML5 interface utilizing open-source tools such as Leaflet.js. SOTO 2D data layers are annotated to give contextual descriptions of the ocean's features and events, and kml overlays (ice extent, hurricane tracks, clouds). Some layer implementations include Sea Surface Temperature (SST), wind vectors, and ocean current vectors.


Aquarius L3 Image Browser

Images are produced from the validated Version 4.0 Aquarius/SAC-D data.




High-level Tool for Interactive Data Extraction (HiTIDE) (L2 Subsetter)

HiTIDE is a web-based interface facilitating the search, imaging, and extraction of select Level 2 "swath" datasets from PO.DAAC's archive.  HiTIDE's  user interface is powered by a set of web services which facilitate machine to machine interoperability. 

PO.DAAC LAS v7.3 LAS Product Server

Live Access Server (LAS) (L3 Subsetter)

LAS enables the web user to: visualize data with on-the-fly graphics; request custom subsets of variables in a choice of file formats; access background reference material about the data (metadata); compare (difference) variables from distributed locations. LAS is a highly configurable web server designed to provide flexible access to geo-referenced scientific data.




Explore PO.DAAC's New Ideas, Prototypes and Tools.
Offer feedback directly to the engineers who developed them. 




Reverb is NASA's next generation metadata and service discovery tool, which provides search and access capabilities for dataset holdings at all of the Distributed Active Archive Centers (DAACs) as well as the PO.DAAC.


Global Change Master Directory (GCMD)

GCMD holds Earth science data set and service descriptions, such as location of the data or service, associated investigators and other contacts, spatial and temporal coverage, and resolution that provide vital information to help determine whether the data or service meets the user’s needs. Use the GCMD to search for information about data and services; to order EOSDIS data, use search-and-order systems such as the EDG or DAAC-specific systems.