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Centre for Dynamic Modelling (CDM)

Centre for Dynamic Modelling (CDM) was established January 1, 2020, as a part of the International Cooperative Programme on Modelling and Mapping of Critical Levels and Loads and Air Pollution Effects, Risks and Trends (ICP Modelling and Mapping).

The primary role of CDM is to promote and develop wide use of dynamic models in the work of the Convention External link, opens in new window..

CDM offers support to all Convention bodies in their work with dynamic models of the air pollution effects, i.e. models that consider time dimension in the air pollution cause-impact relationship. CDM also provides a connection to research groups and projects outside the Convention that are concerned with similar or related issues.

CDM mandate External link, opens in new window. has been defined at the same time when the mandates of other WGE bodies were revised External link, opens in new window..

The functions of the Centre for Dynamic Modelling are to:

  • Develop and promote methods focusing on dynamic modelling to complement ecosystem effect assessment work in collaboration with all Working Group on Effects bodies.
  • Develop, test and elaborate suitable indicators of biodiversity using dynamic models that can be utilized for calculating critical loads, in close collaboration with the Coordination Centre for Effects, the International Cooperative Programme on Modelling and Mapping of Critical Levels and Loads and Air Pollution Effects, Risks and Trends Task Force and other international cooperative programmes.
  • Identify gaps in ecosystem effect modelling under the Working Group on Effects, and propose areas where additional effort would be beneficial.
  • Carry out the development and maintenance of the common Working Group on Effects website, with the aim of providing common access to the work of the Working Group on Effects from one entry point.
  • Facilitate cooperation between the Working Group on Effects and non-Convention research groups and organizations to increase visibility and widen use of results achieved by the International Cooperative Programme on Modelling and Mapping of Critical Levels and Loads and Air Pollution Effects, Risks and Trends specifically and other international cooperative programmes in general, in a cost-effective way.
  • Promote participation of all Parties and relevant Convention bodies and seek ways in which collectively gathered knowledge and information can be used in the common framework of dynamic models.
  • Provide links between long-term monitoring and dynamic model development groups within the Convention.

The full document can be read here. External link, opens in new window.

a diagram of the structure of CDM

From JEG DM to CDM

The Joint Expert Group on Dynamic Modelling (JEG DM) started in 1999 as an ad hoc group directed towards the future development of dynamic modelling and was financed by the Swedish EPA. In 2001 JEG DM was included under the Working Group on Effects (WGE).

JEG DM was a forum to discuss science with focus on dynamic modelling and ecosystems. Over the years the discussions included issues such as modelling biodiversity change, development of indicators, interactions of air pollution with climate change and land use and interactions between nitrogen-carbon-phosphorous.

JEG DM organised yearly meetings with experts and held its last 19th meeting in Sitges, Spain, 30 October to 1 November 2019. The outcomes of the meetings were reported to the WGE and published in reports (available at the page Publications”) and also at the UN ECE website.

CDM Organisation

The CDM program centre is hosted by IVL Swedish Environmental Institute, Gothenburg, Sweden. It currently has a staff of six IVL employees, recruited during 2020.

Filip Moldan is the CDM Chair. He is responsible for planning, leading and supervising the work of the CDM.

Sara Jutterström and Johanna Stadmark are together with Filip Moldan managing and carrying out tasks in the work plan for the CDM, such as model development and development of indicators.

Jan Plue, biodiversity expert, supports the biodiversity modelling work and biodiversity indicator development.

Ragnhild Berglund is communications officer.

Last updated: 2022-03-09
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