京津冀中南部污染气象贡献的时空变化特征

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Abstract In this study, environmental meteorology index (EMI) from model simulation of CMA (China Meteorological Administration) was used to analyze the spatial and temporal distribution characteristics of meteorological conditions variation during 2013~2018 in four key cities of central and southern Beijing-Tianjin-Hebei (BTH) region (Shijiazhuang, Xingtai, Handan and Hengshui). The results showed that, the correlation coefficient between EMI and the detrended PM_2.5 concentration was up to 0.88. EMI had high reliability, and could be applied to atmospheric environment assessment and the meteorological condition evaluation during heavy polluted processes; the contributions of monthly meteorological condition to PM_2.5 concentration variation during 2013~2018 were calculated by the quantitative analysis method based on EMI. The influence of meteorological conditions in months with different atmosphere pollution degrees could be effectively evaluated by quantitatively analyzing the monthly variations of meteorological conditions. In addition, the quantitative analysis method had been effectively applied in the evaluation of meteorological conditions and emission reduction effect on PM_2.5 pollution during important events; According to the spatial distribution of meteorological conditions in winter, it was found that the regions with high positive EMI anomaly percentage concentration were those over central and southern BTH region in front of Taihang-Mountain, which indicated that severe weather conditions were the important reasons for the serious PM_2.5 pollution in central and southern BTH region, in addition to the high anthropogenic emissions.

Key words： environmental meteorology index (EMI) meteorological conditions PM_2.5 pollution quantitative impact

Received: 07 April 2021

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X513

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	Articles by authors
	JIAO Ya-yin
	MENG Kai
	DU Hui-yun
	MA Zhi-chun

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JIAO Ya-yin,MENG Kai,DU Hui-yun等. Spatial-temporal characteristics of the contributions to the particle pollution meteorological conditions in central and southern Beijing-Tianjin-Hebei (BTH) region[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(11): 4982-4989.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I11/4982

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