EMEP GRID - comparisons

Comparison of 50x50km² and 0.1°x0.1° grid data for 2015

The objective of this approach is to compare the new 0.1°x0.1° long-lat grid from the new gridding system with the 50x50km² PS grid from the old system. Therefore the national total emissions from each pollutant in the 0.1°x0.1° grid are added up to the 50x50km² grid.

In the comparison maps you can see the 0.1°x0.1° resolution grid for all main pollutants and particulate matter as well as 50x50km² comparison grids, with the original  50x50km² grid on the left side and the aggregated 0.1°x0.1° grid on the right side. With a slider you can move steplessly between the original 50x50km² grid and the aggregated 0.1°x0.1° grid.

By clicking on a certain cell in the comparison map a popup dialogue with the emission values from the original  50x50km² grid cell and the aggregated 0.1°x0.1° grid cell appears.




To compare emissions from the new 0.1°x0.1° (long-lat) gridding system with gridded 50x50km² PS data or data from other models (like MACC or IISSA ECLIPSE) there are challenges related to differences in grid resolution, projection and category definitions.


The figure shows the 50x50km² PS grid and the 0.1°x0.1° long-lat grid at local scale. The extent is located at the boarder of Austria, Slovakia and Hungary respectively and shows no matching between the grid systems. Therefore for comparison a workflow is needed.