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Preliminary modelling and mapping of critical loads for cadmium and lead in Europe, 2002

Summary

At its 20th session the Working Group on Effects (WGE) of the Convention on Long-range Transboundary Air Pollution of the United Nations Economic Commission for Europe (UNECECLRTAP), noted the need to further develop and test the methodology for mapping critical loads for cadmium and lead. To this end, the WGE invited the International Cooperative Programme on Modelling and Mapping (ICP M&M) and its Coordination Center for Effects at the RIVM (RIVMCCE) to issue, by the end of 2001, a call for relevant data to be provided by its network of National Focal Centers (NFCs) on a voluntary basis.

This report describes the results of this call for data. NFCs were requested to apply (1) an effectbased methodology, identifying atmospheric deposition (critical loads) that will not lead to concentrations of heavy metals above critical limits for microbiota, plants and invertabrates and/or (2) a stand-still approach identifying atmospheric deposition (stand-still loads) that will not lead to any further accumulation of heavy metals in the soil. Seventeen NFCs responded of which eleven provided data.

The report, includes

• the methodological guidance provided to the NFCs at the time of the call.                                                                                                                                             

• preliminary European maps of both critical and stand-still loads loads based on the response from Bulgaria, Belarus, The Czech Republic, Germany, Italy, The Netherlands, Russia, Slovakia,Switzerland, Ukrain, and the United Kingdom.

• preliminary exceedance maps produced in collaboration with the EMEP-Meteorological Synthesizing Centre East under the UNECE-CLRTAP.

The results of the call for data described in this report have been presented and discussed at the 12th CCE workshop and the 18th Task Force of the ICP M&M which were held back-to-back in Italy(Sorrento, 14-19 April 2002). Main recommendations include the further review of methods and national data, the review of atmospheric as well as other heavy metal inputs (in particular on agricultural soils), the exploration of critical limits including those related to human health and the exploration of effect-based approaches for mercury.

The ICP M&M recommended the work of the Expert Group on Critical Limits and the Expert Group on Transfer Functions to continue its work in 2003, using the results of the preliminary call for data on critical loads of cadmium and lead.

 

Preliminary modelling and mapping of critical loads for cadmium and lead in Europe(pdf 6 MB) 

J-P Hettelingh, J. Slootweg, M posch (eds.)

S. Dutchak, I Ilyin (EMEP/MSC-E)

Rivm reportno. 259101011/2002

Last update 27 February 2015

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