10 September 2018

CIAM Report 1/2018: The 2017 critical loads data: Differences to earlier estimates and implications for current and future ecosystems protections

In 2017, the Coordination Centre for Effects (CCE) of the Working Group on Effects compiled a new data set on critical loads in Europe, based on the submissions of national focal centres to the 2015-17 call for data. This data set has now been introduced into the GAINS integrated assessment model, the main tool for policy analyses for the Convention.

This report analyses the implications of the new data on the findings derived from the earlier version compiled in 2012, which served as the basis for the policy analyses for the negotiations on the revised Gothenburg Protocol and the EU clean air policy. It is found that the 2017 updates to the critical loads databases confirm and even strengthen the key policy conclusions derived from the earlier analyses. Current levels of nitrogen deposition are a major threat to the biodiversity of European ecosystems, with even higher exceedances of the critical loads emerging from the new data. The less optimistic evaluations persist also for the baseline projections for 2030.


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Last edited: 19 October 2018

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