File : D3.11

Author : Christoph Gerbig (MPG)

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 2006-2018 period to estimate biosphere-atmosphere exchange fluxes from the top-down perspective, using recent atmospheric observations up to 2018. 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 posterior fluxes from the CSR inversion.

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Figure 1 : Annual and domain-wide integrated NEE for 2001-2014