主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2021, Vol. 37 ›› Issue (4): 40-47.doi: 10.3969/j.issn.1673-503X.2021.04.006

• 论文 • 上一篇    下一篇

2018年冬季鲁西北大气污染特征及影响因子分析

代玉田(),杨学斌*()   

  1. 德州市气象局, 山东 德州 253078
  • 收稿日期:2020-07-27 出版日期:2021-08-30 发布日期:2021-09-10
  • 通讯作者: 杨学斌 E-mail:dyutian@163.com;yxb_5@163.com
  • 作者简介:代玉田, 女, 1974生, 高级工程师, 主要从事专业气象服务工作, E-mail: dyutian@163.com
  • 基金资助:
    中国气象局预报员专项(CMAYBY2016-040)

Analysis of air pollution characteristics and influencing factors in the winter of 2018 in Northwest Shandong province

Yu-tian DAI(),Xue-bin YANG*()   

  1. Dezhou Meteorological Service, Dezhou 253078, China
  • Received:2020-07-27 Online:2021-08-30 Published:2021-09-10
  • Contact: Xue-bin YANG E-mail:dyutian@163.com;yxb_5@163.com

摘要:

利用2018年12月至2019年2月滨州、德州和聊城PM2.5、PM10、NO2、SO2、CO和O3逐日质量浓度及其对应的气象资料,分析了鲁西北大气污染特征和影响因子。结果表明:2018年冬季鲁西北大气污染比较严重,聊城、德州和滨州轻度及以上污染天数分别占61%、60%和54%,重度以上染污天数分别占24%、11%和9%;首要污染物均为PM2.5、PM10和NO2,其中PM2.5占60%以上。PM2.5、PM10、SO2、NO2和CO日变化呈双峰双谷型,谷值分别出现在04-07时和15-17时,且下午比清晨更低,峰值出现在上午和下午交通高峰期后2-3 h,且峰值上午大于下午;O3呈单峰型分布,09时出现极小值,18-19时出现极大值。PM2.5是鲁西北主要的首要污染物,与PM10、CO、NO2均为显著正相关,并通过0.01水平显著性检验,与NO2的相关性在低相对湿度(< 60%)时大于高相对湿度(≥ 60%),与CO的相关性在高相对湿度时大于低相对湿度;污染时段(PM2.5>75 μg·m-3)的平均相对湿度和平均温度明显大于清洁时段(PM2.5 ≤ 75 μg·m-3),清洁时段风速和气压比污染时段明显偏大。

关键词: 大气污染, 气象要素, PM2.5

Abstract:

Using the daily mass concentrations of PM2.5, PM10, NO2, SO2, CO, and O3 and the corresponding meteorological data from December of 2018 to February of 2019, the characteristics and influencing factors of air pollution in Northwest Shandong province were analyzed. The results show that in the winter of 2018, air pollution is relatively serious in Northwest Shandong province. In Liaocheng, Dezhou, and Binzhou, the number of days with mild or above pollution is 61%, 60%, and 54%, respectively, and the number of days with severe or above pollution is 24%, 11%, and 9%, respectively. The main pollutants include PM2.5, PM10, and NO2, among which PM2.5 accounts for more than 60%. The diurnal variation of PM2.5, PM10, SO2, NO2, and CO shows a double-peak and double-trough pattern. The diurnal variation of PM2.5, PM10, SO2, NO2, and CO shows a double-peak and double-trough pattern. The diurnal variation of PM2.5, PM10, SO2, NO2, and CO appears at 04:00-07:00 and 15:00-17:00, respectively, and the peak value is lower in the afternoon than in the morning. O3 presents a unimodal distribution, with a minimum value at 09:00 and a maximum value at 18:00-19:00. PM2.5 is the main primary pollutant in the northwest of Shandong province. It is significantly positively correlated with PM10, CO, and NO2, and reaches the significance test of 0.01 level. The correlation between PM2.5 and NO2 at low relative humidity (< 60%) is higher than that at high relative humidity (≥ 60%), and its correlation with CO at high relative humidity is higher than that at low relative humidity. The average relative humidity and temperature in the polluted period (PM2.5>75 μg·m-3) are significantly higher than those in the clean period (PM2.5 ≤ 75 μg·m-3), and the wind speed and air pressure in the clean period are significantly higher than those in the polluted period.

Key words: Air Pollution, Meteorological elements, PM2.5

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