COSMIC-1 Data

Reprocessed Datasets

COSMIC-1 data are available at https://data.cosmic.ucar.edu/gnss-ro/cosmic1/. The following are available:

• Level 1a
  • Spacecraft attitude information (leoAtt format)
  • Precise orbit determination antenna tracking data (podCrx/RINEX2 format)
  • Radio occultation antenna tracking data (opnGps format)
• Level 1b
  • Atmospheric excess phase (atmPhs format)
  • Navigation bits used for processing open loop data in the lower troposphere (gpsBit format)
  • Ionospheric excess phase (ionPhs format)
  • Clock offset values for each LEO satellite (leoClk format)
  • LEO orbit specification file (leoOrb format)
  • Absolute Total Electron Content and auxiliary data (podTec format)
  • S4 scintillation index and auxiliary data (scnLv1 format)
• Level 2
  • Atmospheric profiles without moisture ( atmPrf format)
  • Atmospheric profiles with moisture (wetPrf format)
  • Low-resolution, atmospheric profile in the BUFR format (bfrPrf format)
  • ERA-40 Interim reanalysis data (eraPrf format)
  • NCEP operational analysis data (gfsPrf format)
  • Ionospheric profiles (ionPrf format)
  • Gradient-assisted ionospheric profiles (igaPrf format)

The latest cosmic2021 reprocessing was published in 2022 and covers the complete mission data. Release notes for cosmic2021 are available here.

Post-Processed Datasets

COSMIC-1 post-processed data are available at ​https://data.cosmic.ucar.edu/gnss-ro/cosmic1/postProc/. The following are available:

• Level 1a
  • Spacecraft attitude information (leoAtt format)
  • Precise orbit determination antenna tracking data (podCrx/RINEX2 format)
  • Radio occultation antenna tracking data (opnGps format)
• Level 1b
  • Atmospheric excess phase (atmPhs format)
  • Navigation bits used for processing open loop data in the lower troposphere (gpsBit format)
  • Ionospheric excess phase (ionPhs format)
  • Clock offset values for each LEO satellite (leoClk format)
  • LEO orbit specification file (leoOrb format)
  • Absolute Total Electron Content and auxiliary data (podTec format)
  • S4 scintillation index and auxiliary data (scnLv1 format)
• Level 2
  • Atmospheric profiles without moisture ( atmPrf format)
  • Low-resolution, atmospheric profile in the BUFR format (bfrPrf format)
  • ECMWF profiles (echPrf format)
  • ERA-40 Interim reanalysis data (eraPrf format)
  • NCEP operational analysis data (gfsPrf format)
  • Ionospheric profiles (ionPrf format)
  • Atmospheric profiles with moisture (wetPrf format)

These datasets are available from 2014-05-01 to 2020-05-01.

Digital Object Identifier (DOI)

UCAR has obtained a DOI for the COSMIC-1 data published by the CDAAC:

https://doi.org/10.5065/ZD80-KD74

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, 2022: COSMIC-1 Data Products [Data set]. UCAR/NCAR - COSMIC, Access date [insert date], https://doi.org/10.5065/ZD80-KD74