Atmospheric excess phases and auxiliary data used for generating atmospheric profiles. Removal of clock errors is based on single differencing. The velocity precision of the conPhs files is estimated to be less than 0.15 mm/s RMS.
GPS navigation data modulation bits used for processing open loop data in the lower troposphere. The velocity precision of the conPhs files is estimated to be less than 0.15 mm/s RMS.
Atmospheric profiles of bending angle, refractivity, and dry temperature.
Atmospheric profiles of refractivity, temperature and water vapor. These profiles are based on 1D variational analysis using ECMWF low resolution analysis data (found in the ecmPrf files).
Temperature, pressure and moisture profiles generated from the ECMWF gridded analysis and colocated with occultation profiles.
Temperature, pressure and moisture profiles
ERA-40 Interim reanalysis - Temperature, pressure and moisture profiles generated from the ERA interim model.
Radio sonde comparison profiles.
Vertical profile through gridded NCEP operational analysis NetCDF files.
Contains results in BUFR format from both atmPrf and wetPrf. The refractivity profile in bfrPrf is equivalent to the one in the corresponding atmPrf file, but may differ from the one in wetPrf.
Grid of averaged radio occultation data, an MMC grid, where MMC means Monthly Mean Climatology.
Absolute total electron content from the POD antennas (including ionospheric occultations). The accuracy is believed to be within 1-3 TECU, but has not been verified. Note: Data arcs from some antennas may be un-calibrated for the receiver differential code bias.
Ionospheric excess phases and auxiliary data used for generating ionospheric profiles. Note: No differencing is applied - expect receiver clock errors on L1 and L2.
Ionospheric profiles of electron density. The accuracy is genereally about 104-105 cm-3. Caveats: Some profiles may be affected by cycle-slips.
Geo-located measurements from the Tiny Iononospheric Photometer. Each file contains data from one dump.
Derived S4 scintillation index provided every second. Caveats: Intermittent anomalies in the CA SNRs from some antennas may result in false S4 index values.
Atmospheric occultation data in a simple custom binary format. This data file contains all high rate atmospheric data sent us by the GPS receiver on the LEO.
Raw L1 and L2 pseudo-range and carrier phase tracking data in compressed RINEX 2.20 format
Attitude and rough position data from the COSMIC spacecraft andthe GOX navigation solutions.
Precise COSMIC spacecraft orbits. The orbit precision based on internal orbit overlap comparisons is on average less than 15 cm 3D RMS (0.15 mm/s 3D velocity).
This file contains clock offset values for each GPS satellite during the period specified in the file name. These data are in Bernese 'CLK' ASCII format.