Changes in net ecosystem exchange over Europe during the 2018 drought based on atmospheric observations.

ABSTRACT: The 2018 drought was one of the worst European droughts of the twenty-first century in terms of its severity, extent and duration. The effects of the drought could be seen in a reduction in harvest yields in parts of Europe, as well as an unprecedented browning of vegetation in summer. Here, we quantify the effect of the drought on net ecosystem exchange (NEE) using five independent regional atmospheric inversion frameworks. Using a network of atmospheric CO₂ mole fraction observations, we estimate NEE with at least monthly and 0.5° × 0.5° resolution for 2009-2018. We find that the annual NEE in 2018 was likely more positive (less CO₂ uptake) in the temperate region of Europe by 0.09 ± 0.06 Pg C yr^-1 (mean ± s.d.) compared to the mean of the last 10 years o

SUBMITTER: Thompson RL 

PROVIDER: S-EPMC7485096 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature