CDAAC GNSS Radio Occultation Datasets
CDAAC processes and makes available data from more than a dozen GNSS radio occultation missions.
Detailed information about the COSMIC-1 and COSMIC-2 mission is on separate pages.
For missions other than COSMIC-1 and COSMIC-2 the table below lists processing mode, available date range, link to the data, and file types published.
| champ2016 | cnofs | geoopt | gpsmet | gpsmetas | grace | kompsat5 | metopa2016 | metopa | metopb2016 | metopb | metopc | paz | sacc | spire | tdx | tsx | |
| Processing mode | R | P | N | P | P | P | P | R | P | R | P | P | P | P | N | P | P |
| Date range | 2001.139 - 2008.279 | 2010.060 - 2011.365 |
2020.351 - 2021.014 |
1995.111 - 1997.047 | 1995.237 - 1997.016 | 2007.059 - 2017.334 | 2015.022 - 2021.059 | 2007.274 - 2015.365 | 2016.001 - 2021.059 | 2013.032 - 2015.365 | 2016.001 - 2021.059 | 2019.195 - 2021.059 | 2018.130 - 2021.059 | 2006.068 - 2011.215 |
2020.352 - 2021.015 |
2016.001 - 2021.059 | 2008.041 - 2021.059 |
| Data | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link | Link |
| DOIs | https://doi.org/10.5065/qan9-we09 | https://doi.org/10.5065/8r12-hs65 |
https://doi.org/10.5065/0dxg-nn57 |
https://doi.org/10.5065/rgpy-g566 | https://doi.org/10.5065/rgpy-g566 | https://doi.org/10.5065/chk8-fx07 | https://doi.org/10.5065/7m8g-ja33 | https://doi.org/10.5065/789w-m137 | https://doi.org/10.5065/789w-m137 | https://doi.org/10.5065/1k0w-2272 | https://doi.org/10.5065/1k0w-2272 | https://doi.org/10.5065/p8es-mc74 | https://doi.org/10.5065/k9vg-t494 | https://doi.org/10.5065/82ny-407 |
https://doi.org/10.5065/1a8d-yh72 |
https://doi.org/10.5065/1TDC-0Z47 | https://doi.org/10.5065/fv7s-ax27 |
| File types | |||||||||||||||||
| atmPhs | x | x | x | x | x | x | x | x | x | x | x | x | |||||
| atmPrf | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| bfrPrf | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| conPhs | x | x | x | x | x | ||||||||||||
| echPrf | x | x | x | x | x | x | x | x | x | x | x | x | x | ||||
| ecmPrf | x | x | x | x | |||||||||||||
| er5Prf | x | x | |||||||||||||||
| eraPrf | x | x | x | x | x | ||||||||||||
| gfsPrf | x | x | x | x | x | x | x | x | x | x | x | ||||||
| gpsBit | x | x | x | x | |||||||||||||
| ionPhs | x | x | x | x | |||||||||||||
| ionPrf | x | x | |||||||||||||||
| leoAtt | x | x | x | x | x | x | x | x | |||||||||
| leoClk | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | |
| leoOrb | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| opnG[pn]s | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | |
| podCrx | x | x | x | x | x | x | x | x | x | x | x | x | x | x | |||
| podTec | x | x | x | x | x | x | x | x | x | x | x | x | |||||
| scnLv1 | |||||||||||||||||
| wetPf2 | x | x | x | x | x | x | x | ||||||||||
| wetPrf | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
N = near real-time; P = post-processed; R = reprocessed
File Formats
Further information on each file type:
- 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 or conPhs 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)
- ERA-40 Interim reanalysis data (eraPrf format)
- NCEP operational analysis data (gfsPrf format)
- Ionospheric profiles (ionPrf format)
- Atmospheric profiles with moisture (wetPrf format)
Supporting Documentation
Standard RO Inversions in the Neutral Atmosphere 2013 - 2020 (Processing Steps and Explanation of Data)