The workshop was attended by 80 experts from the following 19 Parties to the Convention : Austria , Canada , Croatia , the Czech Republic , Denmark , France , Germany , Hungary , Ireland , Italy , the Netherlands , Norway , Poland , Portugal , Slovakia , Sweden , Switzerland , the United Kingdom and the United States . The European Commission , the EMEP Meteorological Synthesizing Centre - West ( MSC-W ) , the International Institute for Applied Systems Analysis and the secretariat were represented .