Sources of emission and their impacts on PM2.5 in Nanjing and Shanghai

DOI

10.2991/ifeesm-17.2018.207How to use a DOI?

Keywords

Emission, PM2.5, industry, power, residential, transportation, agriculture

Abstract

Emission is a key factor to govern the mass concentrations of air pollutants including PM2.5, but currently remains large uncertainties. In this study, we firstly analyzed a commonly used emission invertory-MECI10, to understand the situations of emissions from the different major sources such as industry, power, transportation, residential, and agriculture in Nanjing and Shanghai. The analysis shows that industry contributes the most to PM and most gases in both Nanjing and Shanghai, and power contributes more to NOx than industry at Shanghai, while agriculture dominates NH3 emission. The modeled meteorology including temperature, wind speed (direction) and precipitation is then evaluated against the observations during the same time periods, and shows the overall good agreement with the observations. The simulated PM2.5 exhibits quite consistent seasonal variations compared to the observed, though the magnitudes are overall higher in the model. The impacts of emissions from various sources on PM2.5 was finally investigated and the results indicate that the contribution from industry contributes more than 40% to the total PM2.5 during April, July and Fall, with slightly higher percentage in Shanghai than in Nanjing. Different from other seasons, residential contributes the most due to heating in winter. Agriculture is the second largest contributor to the total PM2.5 throughout the year, while the contributions from residential and transportation are the least.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Song Gao
AU  - Long Zhuang
AU  - Yanan Hu
AU  - Xiaoyan Ma
AU  - Tong Sha
AU  - Qikun Guan
AU  - Ruolin Li
AU  - Zeyu Fu
PY  - 2018/02
DA  - 2018/02
TI  - Sources of emission and their impacts on PM2.5 in Nanjing and Shanghai
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 1132
EP  - 1137
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.207
DO  - 10.2991/ifeesm-17.2018.207
ID  - Gao2018/02
ER  -