ENIRED

Estimation of reductions of atmospheric nitrogen deposition achievable by implementing the Gothenburg Protocol/EU‐NEC Directive (2017-2018)


Airborne deposition of nitrogen is a substantial contribution to the total input of this nutrient into the Baltic Sea environment. It originates from nitrogen emissions from HELCOM countries as well as beyond the Baltic Sea catchment area. The reduction of the air emissions of oxidized and reduced nitrogen is the subject for Gothenburg Protocol (revised in 2012) and EU NEC Directive 2016/2284.

The data on air emission and subsequent deposition of nitrogen on the Baltic Sea water area is the task fulfilled by the Meteorological Synthesizing Centre of the Co‐operative Programme for Monitoring and Evaluation of the Long Range Transmission of Air Pollutants in Europe (EMEP). The EMEP compiles various data on nitrogen air emission from all countries and other sources and model transmission of the compounds and their deposition. The EMEP database is a unique compilation of the emission data which allows not only to trace changes in emissions and deposition of nitrogen during the past decades but also to estimate future reductions in case of implementation of requirements of Gothenburg protocol and EU NEC Directive.

The estimation of reductions of atmospheric nitrogen deposition achievable by implementing the Gothenburg protocol and the EU NEC directive with project to 2020 and 2030 years has been carried out within the project, as relevant information for the assessment of total potential of the nitrogen input reduction into the Baltic Sea and effectiveness of measures to be undertaken.

The final product of the project is calculation of nitrogen deposition to Baltic Sea basin and its sub-basins in 2020 and 2030. The data will be utilized to assess input of nutrients by HELCOM PLC-7 project.

Activities 

  1. Preparation of updated emissions data from the HELCOM countries and ship traffic from the Baltic Sea for the years 2005, 2020 and 2030. - The countries are to be invited to verify national emission data for the reference year 2005. The updates then will be included into the EMEP model input data.

  2. Calculation of nitrogen deposition to Baltic Sea basin and its sub-basins used for estimation of nitrogen inputs in the PLC-7 project. - The calculation of nitrogen deposition will be made for the years 2020 and 2030.

  3. Comparison of calculated depositions, analysis of the effects and creation of tables and maps and summary report.

Expected results


EMEP will produce maps of nitrogen deposition on the water area of the Baltic Sea and its sub-basins in 2020 and 2030. The calculation of deposition will be based on the estimates of nitrogen emission in the respective years taking into account reductions of atmospheric emission of nitrogen achievable by implementing the Gothenburg Protocol/EU‐NEC Directive. The maps will be produced based on the EMEP deposition grid.

Further the modelling results will be recalculated to the sub-basins of the Baltic Sea which are used to assess input of nutrients by HELCOM PLC-7 project. The final results will also include calculation of percentage of potential reduction of airborne input of nutrients. The data will further be used to evaluate contribution of measures on reduction of airborne input of nitrogen into the total potential of nitrogen input reduction.

For further information, please contact:

Mr. Jerzy Bartnicki
Norwegian Meteorological Institute
EMEP/Meteorological Synthesizing Centre – West
Phone: +47 22 96 33 15
jerzy.bartnicki@met.no


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