EMEP/MSC-W calculated SR country tables and data

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Data produced by EMEP/MSC-W are licensed under Norwegian license for public data (NLOD) and Creative Commons 4.0 BY International. Credit should be given to The Norwegian Meteorological institute, shortened "MET Norway", as the source of data. Some suggestions: "Data from The Norwegian Meteorological Institute", "Based on data from MET Norway".




About the SR calculations

Downloable Excel-compatible tables with yearly country-to-country source-receptor matrices and yearly grid-to-grid source-receptor calculations by country for depositions of sulphur and nitrogen, and concentrations of ozone (O3) and particulate matter (PM) are available for years since 2003 and the recalculated years 1997-2006. Calculations for the different years are based on different versions of the EMEP MSC-W model, emissions and meteorological drivers, except for the recalculations (rep2009). In 2009, a consistent set of SR trend runs were created for the years 1997-2006 using the same EMEP/MSC-W model version (3.1) for each year. Thus, tables for all compounds are not available for all years (some O3 and PM compounds). Calculations for the years since 2007 and recalculations of previous years (rep2009) are covering the extended EMEP grid.

The source-receptor (SR) relationships give the change in air concentrations or depositions resulting from a change in emissions from each emitter country. For each country, reductions in six different pollutants have been calculated separately: with an emission reduction of 15% for SOx, NOx, NH3, NMVOC, PPM2.5 or PPMcoarse respectively. The deposition tables show the contribution from one country to another. They have been calculated adding the differences obtained by a 15% reduction for all emissions in one country multiplied by a factor of 100/15, in order to arrive at total estimates. For the concentrations and indicator tables, the differences obtained by the 15% emission reduction of the relevant pollutants are given directly. Thus, the tables should be interpreted as estimates of this reduction scenario from the chemical conditions of the given year.

EMEP MSC-W model calculations are changing with time, not only because of EMEP MSC-W model updates, but also due to modifications of the input data (e.g. revised emission data and meteorology). In broad terms, two types of model results can be distinguished:



User Guide to gridded SR data

Please remember to give suitable filenames to the downloaded files. Please note that the ASCII files are compatible with Excel.

The list-boxes above allow for multiple selections of Countries/Areas, Years and Chemical Components. With [CTRL]-[Left Mouse-Button] several items can be selected or deselected. With [Shift]-[Left Mouse-Button] a continuous list can be selected or deselected. You can also choose the format in which you wish to download the data. Country-to-grid SR data can be downloaded in two formats, either as Excel compatible ASCII files or maps.
When all selections are done, please press the Show Data button. If you need to redo the selection, please press the Clear All button and make your new selections. At least one item from each of the following categories needs to be selected:




Acidification and Eutrophication

Ground Level Ozone

Particulate matter

Additional Particulate matter (only 2011)

Fine Sulphate

Fine Ammonium

Fine and Coarse Nitrate

Fine and Coarse Elemental Carbon


Model versions used

Further descriptions about the different EMEP/MSC-W models can also be found here


Meteorological drivers



The emissions used for the yearly model calculations have been derived from each years official data submissions to CEIP emission database/UNECE CLRTAP and are documented in the appendix of the EMEP Status Reports listed below.