Published January 21, 2019
Following the release of the CHE Tier 1 CO2 Global Nature Run, CHE coordinator ECMWF has created an animation that shows the atmospheric-column CO2 variability with respect to the global annual mean of 399 ppm.
The animation shows the atmospheric-column CO2 from the CHE tier 1 nature run. Nature runs are simulations that aim to be as realistic as possible in order to provide a reference that reproduces typical values and variability associated with the different parameters and processes that we would like to monitor with an observing system from satellites to surface stations. In the animation we can see the variability with respect to the global annual mean of 399 ppm and highlights the fast transport associated with weather systems, as well as the slower changes between the hemispheres following the seasonal cycle and the annual growth rate of the biogenic and anthropogenic fluxes of CO2 at the Earth's surface.