气候变化领域集成服务门户(CCPortal): Dust pollution in China affected by different spatial and temporal types ofEl Nino

CCPortal

DOI	10.5194/acp-22-14489-2022
	Dust pollution in China affected by different spatial and temporal types ofEl Nino
	Yang, Yang; Zeng, Liangying; Wang, Hailong; Wang, Pinya; Liao, Hong
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	14489
结束页码	14502
卷号	22 期号:22 页码:14
英文摘要	Dust is an important aerosol affecting air quality in China in the winter and spring seasons. Dust in China is potentially influenced by the interannual climate variability associated with El Nino. Here, the impacts of El Nino with different temporal and spatial types on dust pollution in boreal winter and spring in China and the potential mechanisms are investigated using a state-of-the-art Earth system model (E3SMv1). We find that the eastern Pacific (EP) and central Pacific (CP) El Nino both increase wintertime dust concentrations by 5-50 mu g m-3 over central-eastern China. Due to a stronger wind and lower relative humidity, which favor dust emissions near sources, and a strengthened northwesterly and reduced precipitation, which are conducive to dust transport, dust concentrations during the CP El Nino are 5-20 mu g m-3 higher in northern China than during the EP El Nino, although the changes are mostly insignificant. El Nino with a short duration (SD) increases boreal winter dust concentrations by 20-100 mu g m-3 over northern China relative to the climatological mean, while there is a decrease of 5-50 mu g m-3 during the long-duration (LD) El Nino, which is also related to the El Nino-induced changes in atmospheric circulation, precipitation, and relative humidity. In the following spring season, all types of El Nino events enhance dust over northern China, but only the increase during the LD El Nino is statistically significant, suggesting that the weaker intensity but longer duration of the LD El Nino events can significantly affect spring dust in China. Our results contribute to the current knowledge of the influence of El Nino on dust pollution, which has profound implications for air pollution control and dust storm prediction.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000886150200001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273767
作者单位	Nanjing University of Information Science & Technology; National University of Defense Technology - China; United States Department of Energy (DOE); Pacific Northwest National Laboratory
推荐引用方式 GB/T 7714	Yang, Yang,Zeng, Liangying,Wang, Hailong,et al. Dust pollution in China affected by different spatial and temporal types ofEl Nino[J],2022,22(22):14.
APA	Yang, Yang,Zeng, Liangying,Wang, Hailong,Wang, Pinya,&Liao, Hong.(2022).Dust pollution in China affected by different spatial and temporal types ofEl Nino.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(22),14.
MLA	Yang, Yang,et al."Dust pollution in China affected by different spatial and temporal types ofEl Nino".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.22(2022):14.