Ute Karstens
Forskare
Atmospheric CO2 inversions on the mesoscale using data-driven prior uncertainties : quantification of the European terrestrial CO2 fluxes
Författare
Summary, in English
Optimized biogenic carbon fluxes for Europe wereestimated from high-resolution regional-scale inversions, uti-lizing atmospheric CO2measurements at 16 stations for theyear 2007. Additional sensitivity tests with different data-driven error structures were performed. As the atmosphericnetwork is rather sparse and consequently contains large spa-tial gaps, we use a priori biospheric fluxes to further constrainthe inversions. The biospheric fluxes were simulated by theVegetation Photosynthesis and Respiration Model (VPRM)at a resolution of 0.1◦and optimized against eddy covari-ance data. Overall we estimate an a priori uncertainty of0.54 GtC yr−1related to the poor spatial representation be-tween the biospheric model and the ecosystem sites. The sinkestimated from the atmospheric inversions for the area of Eu-rope (as represented in the model domain) ranges between0.23 and 0.38 GtC yr−1(0.39 and 0.71 GtC yr−1up-scaled togeographical Europe). This is within the range of posteriorflux uncertainty estimates of previous studies using ground-based observations.
Avdelning/ar
- eSSENCE: The e-Science Collaboration
Publiceringsår
2018-03-02
Språk
Engelska
Sidor
3047-3064
Publikation/Tidskrift/Serie
Atmospheric Chemistry and Physics
Volym
18
Issue
4
Dokumenttyp
Artikel i tidskrift
Förlag
Copernicus GmbH
Ämne
- Meteorology and Atmospheric Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1680-7324