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Access to the Space Physics Data Facility (SPDF) public archive by directory, with additional access methods(including web services).
Coordinated Data Analysis Web (CDAWeb) provides data browsing and downloads in many formats, with access via web services, for most heliophysics level-2 datasets in CDF and netCDF files. Pre-generated plots for some missions can be easily viewed with Plot Walk (new)
The Satellite Situation Center (SSCWeb) provides orbits from multiple spacecraft in listings and plots, and interactively with the 4D orbit display. It also enables complex queries based on geophysical regions, magnetic field tracing, and ground stations.
Search the international registry of heliophysics data products (based on the uniform metadata provided by the uniform Space Physics Archive Search and Extract (SPASE) terminology).
Heliophysics studies the nature and dynamic interactions of the Sun, the heliosphere, and the plasma environments of the planets and interstellar space. The Heliophysics Digital Resource Library (HDRL) archives and serves the heliophysics data, as a project in the Heliophysics Science Division (HSD) at NASA's Goddard Space Flight Center. Space Physics Data Facility (SPDF) is the active and permanent archive for the space physics data, while solar data is archived at Solar Data Analysis Center (SDAC), as components of the HDRL, per NASA’s Heliophysics Science Data Management Policy. Visit NASA Heliophysics Data for more information, policy, and document templates.
SPDF provides multi-project, cross-disciplinary access to data to enable correlative and collaborative research across discipline and mission boundaries with present and past missions. Many datasets from current missions are updated regularly (even daily), including reprocessed data for older time periods, and SPDF only preserves the latest version. SPDF maintains the CDAWeb data explorer and browsing system, the SSCweb database of spacecraft orbits, the OMNIWeb cross-normalized database, and the Common Data Format (CDF) self-describing science data format and associated software.
2025 April: The hourly ephemeris data (xxx_helio1hr_position) for heliospheric/planetary missions, planets and comets are generated and added to SPDF archive and the CDAWeb system. They are made from the ASCII orbit data in HelioWeb ( https://omniweb.gsfc.nasa.gov/coho/helios/heli.html). The daily orbit data values equal to the hourly orbit data values at the beginning of each day (hour = 0). The daily ephemeris data (xxx_helio1day_position) will be removed from CDAWeb soon.
2025 March: The PSP data have been extended to December 2024 (availability depending on the data sets), covering Encounters 20 and 21 and the inbound leg of Orbit 22. Please check the CDAWeb system, the PSP inventory plot and the annual inventory plots for details.
2025 March: Atmospheric Waves Experiment (AWE) Level 3 data are now available in the CDAWeb system and in the archive.
2024 December: A new CDF version 3.9.1 distribution is now available. See the CDF home page for links to the software/documentation and the 3.9.1 Release Notes.
Join Email list for SPDF Announcements related to SPDF software and services (changes, upgrades, outages). Postings will be very infrequent but are especially useful to regular users of our services.
Please contact us with any questions, problems, suggestions, and other comments by emailing NASA-SPDF-Support@nasa.onmicrosoft.com
Access to the Space Physics Data Facility (SPDF) public archive by directory, with additional access methods(including web services).
Coordinated Data Analysis Web (CDAWeb) provides data browsing and downloads in many formats, with access via web services, for most heliophysics level-2 datasets in CDF and netCDF files. Pre-generated plots for some missions can be easily viewed with Plot Walk (new)
The Satellite Situation Center (SSCWeb) provides orbits from multiple spacecraft in listings and plots, and interactively with the 4D orbit display. It also enables complex queries based on geophysical regions, magnetic field tracing, and ground stations.
Search the international registry of heliophysics data products (based on the uniform metadata provided by the uniform Space Physics Archive Search and Extract (SPASE) terminology).
Process and requirements for submitting new data to HDRL archives (SPDF and SDAC)
The OMNI dataset provides cross-normalized solar wind field and plasma data mapped to the nose of the bow shock, geomagnetic and solar activity indices, and energetic particle flux data. COHOweb provides access to magnetic field, plasma, energetic particle, and spacecraft position (also at HelioWeb) data from many deep-space spacecraft (Voyager, Ulysses, STEREO, Pioneer, Helios, etc.).
CDF scientific file format stores multi-dimensional data in a platform-independent self-describing format, with associated software libraries, including SKTeditor for defining the structure and metadata for new datasets.
Process and requirements for submitting new data to HDRL archives (SPDF and SDAC)
