A full description of the current GAINS integrated assessment framework has been published (December 2011):

• Amann M, Bertok I, Borken-Kleefeld J, Cofala J, Heyes C, Höglund-Isaksson L, Klimont Z, Nguyen B, Posch M, Rafaj P, Sandler R, Schöpp W, Wagner F, Winiwarter W. (2011)
  Cost-effective control of air quality and greenhouse gases in Europe: Modeling and policy applications.
  Environmental Modelling & Software, 26(12):1489-1501 (December 2011) (Published online 15 September 2011) [doi:10.1016/j.envsoft.2011.07.012]

This paper describes the methodological approach of the GAINS model and its components. It presents a recent policy analysis that explores the likely future development of emissions and air quality in Europe in the absence of further policy measures, and assesses the potential and costs for further environmental improvements. To inform the forthcoming negotiations on the revision of the Gothenburg Protocol of the Convention on Long-range Transboundary Air Pollution, the paper discusses the implications of alternative formulations of environmental policy targets on a cost-effective allocation of further mitigation measures.

IIASA has prepared a background report for the 49th meeting of the Working Group on Strategies and Review (Geneva, September 12-15, 2011) to inform negotiations on the revision of the Gothenburg Protocol about the scope for further environmental improvements. This report presents revised emission control scenarios that would achieve the environmental targets laid out in the earlier CIAM 1/2011 report, taking into account the latest updated information on national emission inventories and projections provided by Parties to the Convention on Long‐range Transboundary Air Pollution. Download report ...

Updated data sheets with details of country-specific measures are available.

Following the WGSR meeting the chair of the Task Force on Integrated Assessment Modelling has prepared tables giving emission reduction percentages for all ambition options on the basis of the emission data in CIAM report 4/2011.

A background paper prepared for the 14th meeting of the UNECE Task Force on Health describes a revised approach to the assessment of the health impact related to exposure to fine particulate matter in the GAINS model.  While the current GAINS assessment is based on all-cause mortality, the new approach employs cause‐specific concentration‐response relationships for lung cancer, cardio‐vascular and respiratory diseases for European countries.

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Nitrogen pollution costs the EU between €70-€320 billion annually. This is a key finding of a new study on the impacts of N, which is essential for food production, but contributes to climate change and biodiversity loss. The report, involving IIASA’s Wilfried Winiwarter and Zbigniew Klimont, provides guidance to the EU on how to reduce N pollution and protect human health and the environment.

Further information is available in this summary, from an article in Nature, and in the video produced for the launch of the assessment.