Source-receptor relationships for atmospheric mercury deposition in the context of global change

There have been growing concerns about mercury pollution in the global environment and better understanding of source-receptor relationships for deposition context change is greatly needed. We use a 3-D chemical transport model (GEOS-Chem) to examine between various regions as well impacts from changes anthropogenic emissions, climate, land cover. Through an extensive set sensitivity simulations, we quantify relative contributions sources (such domestic vs. foreign sources; natural sources) total specific receptor (East Asia, South Europe, North America, Laurentian Great Lakes). Under 2050 A1B emission scenario (the higher with fast economic growth balanced emphasis on all energy sources), emissions each region are calculated increase general, while ocean terrestrial found decrease. On other hand, B1 lower rapid introduction clean resource-efficient technologies), find show different signs over regions, reflecting divergent trends future (notably, Asia decrease East Asia). Compared deposition, climate use/land cover generally smaller magnitudes but stronger spatial variations.