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.
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.
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.
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.
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.
Comparison of calculated depositions, analysis of the effects and creation of tables and maps and summary report.
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.
Mr. Jerzy BartnickiNorwegian Meteorological
Synthesizing Centre – WestPhone: +47 22 96 33 email@example.com
EMEP websitePLC-7 project