2014—2017年哈尔滨地区供暖前与供暖期空气污染特征分析

doi:10.3969/j.issn.1673-503X.2022.06.010

Abstract

Abstract:

Using conventional meteorological data, air pollutant concentration monitoring data, and meteorological reanalysis data (The European Centre for Medium-Range Weather Forecasts, ECMWF, and National Centers for Environmental Prediction, NCEP) in Harbin from 2014 to 2017, we compared the evolution and diurnal variation of five criteria air pollutants (PM_2.5, PM₁₀, CO, SO₂, and NO₂) before and after the winter heating period from 2014 to 2017, and analyzed the causes of air pollution in combination with meteorological data.The results indicated that during the heating period, the concentration of five criteria air pollutants increase significantly and remain at a relatively high level.The daily mean SO₂ concentration is mostly affected by heating among all the five air pollutants.Concentrations of PM_2.5, PM₁₀, CO, and NO₂ all have peak values or larger values in early November.PM_2.5 and PM₁₀ vary consistently with each other, exhibiting high homology.In terms of diurnal variation, PM_2.5, PM₁₀, NO₂, SO₂, and CO all exhibit bimodal distributions, but their variations are not completely consistent.Air pollutants released by coal burning during the heating period and the meteorological conditions that are not conducive to pollutants' diffusion lead to the aggravation of air pollution in Harbin.During the overlapping period of straw burning and heating emissions, straw burning seriously affects air quality, which can contribute to 69.4% of PM_2.5 concentration.

Key words: Air pollution, Heating, Straw burning, Meteorological condition

CLC Number:

Shu ZHANG,Lin-jing QUE,Ying WANG,Lei WANG,Chen LUAN,Zhao-bin SUN. Characteristics of air pollution before and during winter heating period in Harbin from 2014 to 2017[J]. Journal of Meteorology and Environment, 2022, 38(6): 81-88.

Figures/Tables 8

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时间	PM_2.5/(μg·m^-3)	PM₁₀/(μg·m^-3)	NO₂/(μg·m^-3)	SO₂/(μg·m^-3)	CO/(mg·m^-3)
供暖前	25	49	34	10	0.7
供暖期	114	145	57	58	1.2
供暖前15 d	36	62	39	14	0.8
供暖开始15 d	114	146	55	32	1.1

时间	气压/hPa	气温/℃	相对湿度/(%)	风速/(m·s^-1)
供暖前	997	17	71	2.5
供暖期	1007	-7	66	2.7

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Characteristics of air pollution before and during winter heating period in Harbin from 2014 to 2017

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