File : D3.13
Author : Christoph Gerbig (MPI-BGC)
Biosphere-atmosphere exchange of CO2 and its interaction with climate drivers is an important player in the carbon cycle. To estimate net ecosystem exchange (NEE) fluxes, VERIFY includes both, biospheric models for bottom-up estimation of fluxes, and a regional inversion for a top-down estimation.
The Jena CarboScope-Regional (CSR) inversion system has been deployed for the 2006-2020 period to estimate biosphere-atmosphere exchange fluxes from the top-down perspective, using recent atmospheric observations up to 2020. This deliverable provides details about the inversion. The results include a priori fluxes (used as initial guess) from the diagnostic light use efficiency model VPRM and FLUXCOM model, and posterior fluxes from the CSR inversion.
Figure 1 : Annually integrated posterior NEE for 2020 from 5 inversions (first row) differing in the biosphere flux models (VPRM in column 1, FLUXCOM in column 2), ocean flux models (costal fluxes combined with CarboScope ocean in column 3, climatological ocean fluxes in column 4), and emission products obtained from EDGAR-BP in column 5
