Ozone pollution over China and India: seasonality and sources

Gao, Meng1,2,3; Gao, Jinhui4; Zhu, Bin3; Kumar, Rajesh5; Lu, Xiao2; Song, Shaojie2; Zhang, Yuzhong2; Jia, Beixi1; Wang, Peng6; Beig, Gufran7; Hu, Jianlin8; Ying, Qi6; Zhang, Hongliang9; Sherman, Peter10; McElroy, Michael B.2,10

2020-04-16

10.5194/acp-20-4399-2020

ATMOSPHERIC CHEMISTRY AND PHYSICS   影响因子和分区

1680-7316

1680-7324

A regional fully coupled meteorology-chemistry model, Weather Research and Forecasting model with Chemistry (WRF-Chem), was employed to study the seasonality of ozone (O-3) pollution and its sources in both China and India. Observations and model results suggest that O-3 in the North China Plain (NCP), Yangtze River Delta (YRD), Pearl River Delta (PRD), and India exhibit distinctive seasonal features, which are linked to the influence of summer monsoons. Through a factor separation approach, we examined the sensitivity of O-3 to individual anthropogenic, biogenic, and biomass burning emissions. We found that summer O-3 formation in China is more sensitive to industrial and biogenic sources than to other source sectors, while the transportation and biogenic sources are more important in all seasons for India. Tagged simulations suggest that local sources play an important role in the formation of the summer O-3 peak in the NCP, but sources from Northwest China should not be neglected to control summer O-3 in the NCP. For the YRD region, prevailing winds and cleaner air from the ocean in summer lead to reduced transport from polluted regions, and the major source region in addition to local sources is Southeast China. For the PRD region, the upwind region is replaced by contributions from polluted PRD as autumn approaches, leading to an autumn peak. The major upwind regions in autumn for the PRD are YRD (11 %) and Southeast China (10 %). For India, sources in North India are more important than sources in the south. These analyses emphasize the relative importance of source sectors and regions as they change with seasons, providing important implications for O-3 control strategies.

SCI

英语

其他

National Key Research and Development Programme -Science, Technology, and Innovation Cooperation with Hong Kong, Macau, and Taiwan[2017YFE0191000]

Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences

Environmental Sciences ; Meteorology & Atmospheric Sciences

WOS:000527606700001

COPERNICUS GESELLSCHAFT MBH

GEOSCIENCES

Web of Science

1.Hong Kong Baptist Univ, State Key Lab Environm & Biol Anal, Dept Geog, Hong Kong, Peoples R China
2.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA
3.Nanjing Univ Informat Sci & Technol, China Meteorol Adm, Key Lab Aerosol Cloud Precipitat, Nanjing, Peoples R China
4.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen, Peoples R China
5.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA
6.Texas A&M Univ, Zachry Dept Civil & Environm Engn, College Stn, TX USA
7.Indian Inst Trop Meteorol, Pune, Maharashtra, India
8.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, 219 Ningliu Rd, Nanjing, Peoples R China
9.Fudan Univ, Dept Environm Sci & Engn, Shanghai, Peoples R China
10.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA

Gao, Meng,Gao, Jinhui,Zhu, Bin,et al. Ozone pollution over China and India: seasonality and sources[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(7):4399-4414.

Gao, Meng.,Gao, Jinhui.,Zhu, Bin.,Kumar, Rajesh.,Lu, Xiao.,...&McElroy, Michael B..(2020).Ozone pollution over China and India: seasonality and sources.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(7),4399-4414.

Gao, Meng,et al."Ozone pollution over China and India: seasonality and sources".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.7(2020):4399-4414.