气候变化领域集成服务门户(CCPortal): Establishment of Conceptual Schemas of Surface Synoptic Meteorological Situations Affecting Fine Particulate Pollution Across Eastern China in the Winter

CCPortal

DOI	10.1029/2020JD033153
	Establishment of Conceptual Schemas of Surface Synoptic Meteorological Situations Affecting Fine Particulate Pollution Across Eastern China in the Winter
	Hou X.; Zhu B.; Kumar K.R.; de Leeuw G.; Lu W.; Huang Q.; Zhu X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:23
英文摘要	In the present study, the characteristics of weather conditions and local meteorological variables over the Beijing-Tianjin-Hebei (BTH) and the Yangtze River Delta (YRD) regions in the winter are analyzed using the principal component analysis (PCA) method and daily PM2.5 accumulation rate. Typical synoptic weather patterns over China in the winter can be classified into four types. During the Type 1 synoptic weather pattern, China is under the influence of the Siberian High, and northerly winds prevail; this situation is beneficial to the transport of pollutants from north to south. However, when the Siberian High is weak, southerly winds prevail which may result in the transport of pollutants from south to north. The Type 2 weather pattern refers to a weak high pressure located in the BTH resulting in the accumulation of pollutants. During the Type 3 weather pattern, an intense cold Siberian High moves to the south and affects the northern areas of China. The associated front brings heavy precipitation in the YRD resulting in the wet deposition of pollution. During the Type 4 weather condition, the weak Siberian High is blocked by the northeast cold vortex and moves towards the south, causing the accumulation of pollution in the YRD. The PCA model shows that there are two transport pathways for pollutants to the BTH (YRD) area: one from the YRD (BTH) and Shandong during Types 1 and 2 (Types 1 and 3) situations and the other one from the central provinces during Type 4 (Types 1 and 4). © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	China; conceptual weather models; meteorological variables; synoptic weather circulations
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185597
作者单位	Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disaster, Ministry of Education (KLME), Joint International Research Laboratory of Climate and Environment Change (ILCEC), School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; Department of Physics, Koneru Lakshmaiah Education Foundation (KLEF), Guntur, India; R&D Satellite Observations, Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands
推荐引用方式 GB/T 7714	Hou X.,Zhu B.,Kumar K.R.,et al. Establishment of Conceptual Schemas of Surface Synoptic Meteorological Situations Affecting Fine Particulate Pollution Across Eastern China in the Winter[J],2020,125(23).
APA	Hou X..,Zhu B..,Kumar K.R..,de Leeuw G..,Lu W..,...&Zhu X..(2020).Establishment of Conceptual Schemas of Surface Synoptic Meteorological Situations Affecting Fine Particulate Pollution Across Eastern China in the Winter.Journal of Geophysical Research: Atmospheres,125(23).
MLA	Hou X.,et al."Establishment of Conceptual Schemas of Surface Synoptic Meteorological Situations Affecting Fine Particulate Pollution Across Eastern China in the Winter".Journal of Geophysical Research: Atmospheres 125.23(2020).