| 2016—2019年唐山市臭氧污染及其与气象条件的关系 |
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| 引用本文： | 张晓东,王冠,王秀玲,崔粉娥,郑艳萍.2016—2019年唐山市臭氧污染及其与气象条件的关系[J].气象与环境学报,2022,38(2):62-69. |
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| 作者姓名： | 张晓东 王冠 王秀玲 崔粉娥 郑艳萍 |
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| 作者单位： | 1. 唐山市气象局生态气候中心, 河北 唐山 0630002. 河北省气象与生态环境重点实验室, 河北 石家庄 0500213. 秦皇岛市气象局, 河北 秦皇岛 066000 |
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| 基金项目： | 河北省气象局科研开发项目“大气污染气象条件精细化预测技术研究”(19kyd01);“唐山市臭氧污染气象预报模型及潜在源分析”(21ky18) |
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| 摘 要： | 利用2016—2019年唐山市逐时O3浓度和气象数据，分析了O3污染特征及其与气象条件的关系。结果表明: 2016年唐山市O3超标天数为53 d，2017—2019年O3超标天数每年在70 d以上，污染程度偏重。O3月平均浓度值呈双峰型分布，6月O3平均浓度值最大，达112.26 μg·m-3，9月次之。O3浓度超标日分布在3—10月，夏季超标天数最多，其他依次为春季、秋季，具有明显的季节变化特征。O3日均浓度为15:00最大，日变化呈单峰型分布。O3浓度与温度、风速正相关，与相对湿度负相关。气温高是导致O3浓度超标的重要因素，日最高温度超过25 ℃时要考虑O3浓度出现超标现象。相对湿度在50%左右及60%—80%时，O3浓度超标率均大于30%，在60%—70%时O3-8h浓度平均值达到最大。夏秋季O3浓度超标率高与地面小风、较低的混合层高度有关。当日均风速1＜V≤4 m·s-1时，O3浓度超标率较高。容易产生中度以上O3污染的天气形势场为500 hPa高空受西北气流或高压脊影响，850 hPa有西南或偏南气流经过，地面大多处在高压后部、低压前部或低压辐合区内。
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| 关 键 词： | 臭氧浓度超标 臭氧污染 气象条件 |
| 收稿时间： | 2021-01-09 |
Characteristics of ozone pollution and its relationship with meteorological conditions from 2016 to 2019 in Tangshan |
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| Xiao-dong ZHANG,Guan WANG,Xiu-ling WANG,Fen-e CUI,Yan-ping ZHENG.Characteristics of ozone pollution and its relationship with meteorological conditions from 2016 to 2019 in Tangshan[J].Journal of Meteorology and Environment,2022,38(2):62-69. |
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| Authors: | Xiao-dong ZHANG Guan WANG Xiu-ling WANG Fen-e CUI Yan-ping ZHENG |
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| Institution: | 1. Ecological Climate Center of Tangshan Meteorological Service, Tangshan 063000, China2. Key Laboratory of Meteorology and Ecological Environment of Hebei Province, Shijiazhuang 050021, China3. Qinhuangdao Meteorological Service, Qinhuangdao 066000, China |
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| Abstract: | Based on the hourly data of O3 concentration and meteorological data in Tangshan from 2016 to 2019, the characteristics of O3 pollution and its relationship with meteorological conditions were analyzed.The results show that the number of days when the concentration of O3 exceeds the threshold value in Tangshan is 53 days in 2016 and that in 2017 to 2019 is more than 70 days per year, so the pollution degree is high.The monthly average concentration of O3 shows a bimodal distribution.The concentration of O3 is the highest (with 112.26 μ g ·m-3) in June, followed by September.The days with the concentration of O3 exceeding the standard occur from March to October, and mostly happen in summer, followed by spring and autumn.The concentration of O3 reaches its maximum at 15:00, and shows a unimodal distribution during the day.O3 concentration is positively correlated with temperature and wind speed, and negatively correlated with relative humidity.High temperature is an important factor leading to excessive concentration of O3.When the daily maximum temperature exceeds 25℃, it should be considered that the concentration of O3 exceeds the standard.When the relative humidity is about 50% and ranges from 60% to 80%, the overstandard rate of O3 concentration is more than 30%.When the relative humidity is 60% to 70%, the average concentration of O3-8h reaches the maximum.The over standard rate of O3 concentration in summer and autumn is related to the surface breeze and lower mixing layer height during the daytime.When the average wind speed during the day is greater than 1 m · s-1 and less than or equal to 4 m ·s-1, the overstandard rate of O3 concentration is higher.The weather situation prone to moderate or above O3 pollution is influenced by northwest airflow or high-pressure ridge at 500 hPa, and southwest or south airflow passes through at 850 hPa.The ground is mostly in the rear of high pressure, front of the low pressures, or convergence area of low pressure. |
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| Keywords: | Ozone concentration exceeded the standard value Ozone pollution Meteorological conditions |
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