The EDGARv4.tox2 is part of the Emission Database for Global Atmospheric Research (EDGAR), which provides time-series of man-made emissions of greenhouse gases, air pollutants and toxic pollutants. The EDGARv4.tox2 contains emissions of total mercury and of the following mercury species: gaseous elemental mercury (GEM) (Hg0), gaseous oxidised mercury (GOM) (Hg2 +) and particle bound mercury (PBM) (Hg-P). This is an independent global mercury emissions inventory consistent across all world countries, which includes emissions from all key mercury emitting sources. Given the local-scale impacts of mercury, the emissions are gridded on 0.1 × 0.1 degree resolution maps using detailed proxy data.
- Greet Janssens-Maenhout
How to cite
Muntean, Marilena; Crippa, Monica; Guizzardi, Diego; Schaaf, Edwin; Janssens-Maenhout, Greet (2018): EDGARv4.tox2 Emission Maps. European Commission, Joint Research Centre (JRC) [Dataset] PID: http://data.europa.eu/89h/jrc-edgar-emissionmapsv4tox2
In the EDGARv4.tox2, mercury emissions are disaggregated by sector and gridded emission data files are provided in two formats: netCDF (in kg/m2/s) and .txt (in t/cell). The EDGARv4.tox2 contains 0.1x0.1 emission gridmaps of total mercury and mercury species from 1970-2012. The emissions of total mercury (Hg), gaseous elemental mercury (Hg_G), gaseous oxidized mercury (Hg_D) and particle bound mercury (Hg_P) are aggregated by sector as following: 1. Cement production (cement); 2. Glass production (glass); 3. Chlor-alkali industry, mercury cell technology (chlor); 4. Combustion in power generation and in industry (comb_power_ind); 5. Combustion in residential and other (comb_res_oth); 6. Artisanal and small-scale gold production (gold_A); 7. Large scale gold production (gold_L); 8. Iron and steel production (iro); 9. Production of Zn, Cu, Pb and Hg (nfe_oth) and 10. Solid waste incineration and agricultural waste burning (waste); 11. Road Transport (tro); 12. Shipping (ship). Complete documentation is provided in the paper: Evaluating EDGARv4.tox2 speciated mercury emissions ex-post scenarios and their impacts on modelled global and regional wet deposition patterns.
- PERGAMON-ELSEVIER SCIENCE LTD, OXFORD, ENGLAND
Speciated mercury gridded emissions inventories together with chemical transport models and concentration measurements are essential when investigating both the effectiveness of mitigation measures and the mercury cycle in the environment. Since different mercury species have contrasting behaviour in the atmosphere, their proportion in anthropogenic emissions could determine the spatial impacts. In this study, the time series from 1970 to 2012 of the EDGARv4.tox2 global mercury emissions inventory are described; the total global mercury emission in 2010 is 1772 tonnes. Global grid-maps with geospatial distribution of mercury emissions at a 0.1°×0.1° resolution are provided for each year. Compared to the previous tox1 version, tox2 provides updates for more recent years and improved emissions in particular for agricultural waste burning, power generation and artisanal and small-scale gold mining (ASGM) sectors. We have also developed three retrospective emissions scenarios based on different hypotheses related to the proportion of mercury species in the total mercury emissions for each activity sector; improvements in emissions speciation are seen when using information primarily from field measurements. We evaluated them using the GEOS-Chem 3-D mercury model in order to explore the influence of speciation shifts, to reactive mercury forms in particular, on regional wet deposition patterns. The reference scenario S1 (EDGARv4.tox2_S1) uses speciation factors from the Arctic Monitoring and Assessment Programme (AMAP); scenario S2 (“EPA_power”) uses factors from EPA's Information Collection Request (ICR); and scenario S3 (“Asia_filedM”) factors from recent scientific publications. In the reference scenario, the sum of reactive mercury emissions (Hg-P and Hg2+) accounted for 25.3% of the total global emissions; the regions/countries that have shares of reactive mercury emissions higher than 6% in total global reactive mercury are China+ (30.9%), India+ (12.5%) and the United States (9.9%). In 2010, the variations of reactive mercury emissions amongst the different scenarios are in the range of −19.3 t/yr (China+) to 4.4 t/yr (OECD_Europe). However, at the sector level, the variation could be different, e.g., for the iron and steel industry in China reaches 15.4 t/yr. Model evaluation at the global level shows a variation of approximately±10% in wet deposition for the three emissions scenarios. An evaluation of the impact of mercury speciation within nested grid sensitivity simulations is performed for the United States and modelled wet deposition fluxes are compared with measurements. These studies show that using the S2 and S3 emissions of reactive mercury, can improve wet deposition estimates near sources.
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