COSMIC-2 Data

Near Real-Time Operational Datasets

COSMIC-2 data processed operationally in near-real time ar

e published daily by 0200 UTC the following day at https://data.cosmic.ucar.edu/gnss-ro/cosmic2/nrt/. The following are available:

• Level 0
  • Binary instrument data (open source reader software is available here)
• Level 1a
  • Spacecraft attitude information (leoAtt format)
  • Precise orbit determination antenna tracking data (podCrx/RINEX2 format)
  • Radio occultation antenna tracking data (opnGns format)
• Level 1b
  • Precise orbit determination solutions (SP3 format)
  • Atmospheric excess phase (conPhs format)
  • Absolute total electron content (podTc2 format) (GLONASS from February 1, 2021 onwards)
• Level 2
  • Atmospheric profiles as atmPrf (RO retrieval), wetPf2 (1D-var retrieval, same as wetPrf format), and BUFR formats
• Release notes
  • Space Weather Data Release Memo
  • Neutral atmosphere product release notes
  • Absolute GPS total electron content product release notes
  • Absolute GLONASS total electron content product release notes

These datasets are available from Oct. 1, 2019 onwards unless otherwise noted.

Near Real-Time Provisional Datasets

COSMIC-2 provisional data processed in near-real time are published daily by 0200 UTC the following day at https://data.cosmic.ucar.edu/gnss-ro/cosmic2/provisional/spaceWeather/. The following are available:

• Level 2
  • Electron density profiles (ionPrf format)
• Provisional space weather product release notes

These datasets are available from Oct. 1, 2019 onwards. Once operational maturity is reached, they will become part of the near real-time operational datasets above.

Provisional neutral atmospheric datasets are no longer updated as of Feb. 25, 2020. Relative GLONASS total electron content products are no longer updated as of January 31, 2021.

Post-Processed Datasets

COSMIC-2 data are post-processed with about 6 weeks delay and are available at https://data.cosmic.ucar.edu/gnss-ro/cosmic2/postProc/. The following are available:

• Level 1b
  • Absolute total electron content (podTc2 format)
• Level 2
  • IVM in-situ density (ivmL2m, same as ivmLv2 format with unvalidated data type fields set to NaN)
• Release notes
  • Absolute GPS total electron content product release notes
  • Absolute GLONASS total electron content product release notes
  • IVM in-situ density release notes

Digital Object Identifier (DOI)

UCAR has obtained a DOI for the COSMIC-2 data published by the CDAAC:

https://doi.org/10.5065/t353-c093

The DOI redirects to this page. DOIs are assumed to persist indefinitely, so they are preferable to using standard URLs in your citations. Here is a suggested citation in the AMS citation style:

UCAR COSMIC Program, 2019: COSMIC-2 Data Products [Data set]. UCAR/NCAR - COSMIC, Access date [insert date], https://doi.org/10.5065/T353-C093