Expert Workshop on Ammonia | Umweltbundesamt

More than ten years after the recommendation of the updated CLRTAP critical levels for ammonia (Mapping Manual), new findings on the effects of ammonia on vegetation have been discussed in a workshop prepared by CCE and the German Environment Agency (UBA) as a lead. The workshop was held at Dessau on March 28/29 March 2022 and offered the opportunity to exchange information on national or regional programs which have been set up for the monitoring of ammonia in sensitive habitats. Scientists dealing with research on effects of ammonia on vegetation and ecosystems and those involved in the monitoring of ammonia in the environment were also asked to present their recent research.
The workshop was part of the current work plan for the year 2022-2023 of CLRTAP (1.1.1.22) and was organized in the framework of a R&D Project financed by the German Environment Agency (UBA). Due to the corona restrictions, only 15 participants were able to attend in presence and over 100 people were following the live stream via a WebEx online meeting platform from several European countries and the US. In total, there were 145 registered participants from 28 countries including representatives from several bodies to the convention such as the UNECE Secretariat, WGE, ICP Vegetation, ICP Forest, CDM, CIAM, MSC-West, TFRN and representatives from several EU Environment Agencies.19 presentations from presenters from nine countries were dealing with a current review, models and future trends of NH3 across Europe in the first session, different ammonia monitoring networks in the second session and with vegetation effects (recent research on different scales) in the third session.