Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/acp-2017-646
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
04 Aug 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).
Comparison and evaluation of anthropogenic emissions of SO2 and NOx<\sub> over China
Meng Li1,3,a, Zbigniew Klimont2, Qiang Zhang1, Randall V. Martin4, Bo Zheng3, Chris Heyes2, Janusz Cofala2, and Kebin He3 1Ministry of Education Key Laboratory for Earth System Modeling, Department for Earth System Science, Tsinghua University, Beijing, China
2International Institute for Applied Systems Analysis (IIASA), Laxenburg, 2361, Austria
3State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
4Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Canada
anow at: Max-Planck Institute for Chemistry, Mainz, Germany
Abstract. Bottom-up emission inventories provide primary understanding of sources of air pollution and essential input of chemical transport models. Focusing on SO2 and NOx, we conducted a comprehensive evaluation of two widely-used anthropogenic emission inventories over China, ECLIPSE and MIX, to explore the potential sources of uncertainties and find the clues in improving emission inventories. We first compared the activity rates and emission factors used in two inventories, and investigated the reasons of differences and the impacts on emission estimates. We found that SO2 emission estimates are consistent between two inventories (with 1 % differences), while NOx emissions in ECLIPSE's estimates are 16 % lower than those of MIX. Discrepancies at sectorial and provincial level are much higher. We then examined the impacts of different inventories on model performance, by using the nested GEOS-Chem model. We finally derived top-down NOx emissions by using the NO2 columns from the Ozone Monitoring Instrument (OMI) and compared with the bottom-up estimates. To our knowledge, this is the first work where source-sector comparisons are made along with the remote sensing retrievals and chemical transport modeling. Through the comparison between bottom-up emission inventories and evaluation with top-down information, we summarized the potential directions for further improvement in inventory development.

Citation: Li, M., Klimont, Z., Zhang, Q., Martin, R. V., Zheng, B., Heyes, C., Cofala, J., and He, K.: Comparison and evaluation of anthropogenic emissions of SO2 and NOx<\sub> over China, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-646, in review, 2017.
Meng Li et al.
Meng Li et al.

Viewed

Total article views: 339 (including HTML, PDF, and XML)

HTML PDF XML Total Supplement BibTeX EndNote
230 107 2 339 13 0 5

Views and downloads (calculated since 04 Aug 2017)

Cumulative views and downloads (calculated since 04 Aug 2017)

Viewed (geographical distribution)

Total article views: 339 (including HTML, PDF, and XML)

Thereof 337 with geography defined and 2 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 23 Sep 2017
Publications Copernicus
Download
Short summary
In this paper, we conducted a comprehensive evaluation of two widely-used anthropogenic emission inventories over China, ECLIPSE and MIX, to explore the potential sources of uncertainties and find the clues in improving emission inventories. We found that SO2 emission estimates are consistent between two inventories (with 1 % differences), while NOx emissions in ECLIPSE’s estimates are 16 % lower than those of MIX. Discrepancies at sectorial and provincial level are much higher.
In this paper, we conducted a comprehensive evaluation of two widely-used anthropogenic emission...
Share