• 3-D Mole Fractions
  
  This is a link to our FTP server, where we have made 3-hourly 3-D CO2 mole fraction fields available in NetCDF format for others to use in their work. Images of the contents of these files are included on the website under CO2 Weather.
• Three-hourly Fluxes
  
  This is a link to our FTP server, where we have made 3-hourly global surface fluxes available in NetCDF format for others to use in their work. Images of the contents of these files are included on the website under Flux Maps.
• Preprocessed Observations
  
  This is a link to the ObsPack page, where the observations as they have been preprocessed for use in the CarbonTracker assimilation system are available in NetCDF format. Images of the contents of these files are included on the website under CO2Time Series. Please note that pre-processed data are NOT actual data. Users should contact the original data providers for access to the actual observations. Please refer to Collaborators for contact information.
• Source Code
  
  This is a link to the CarbonTracker source code. The main body of CarbonTracker is the TM5 two-way nested model written in Fortran-90. Additional data needed to run CarbonTracker yourself can be made available upon request.
• Auxiliary information
  
  • Our inversion regions are defined in the regions.nc file.
  • The set of "extended" regions formed by post-aggregation from the 22 TransCom regions is defined in the postagg_definitions.nc file.
• Archives
  
  This is a link to the CarbonTracker Archive that includes 3-D mole fractions, weekly fluxes, source code, web figures, and documentation from previous releases.
• Other Observations
  
  Users interested in obtaining other observational data used in CarbonTracker should directly contact the measurement laboratory. CarbonTracker collaborators are listed in Collaborators.

National Oceanic and Atmospheric Administration
Earth System Research Laboratory
Global Monitoring Laboratory