| 2015-2018年海南省臭氧污染特征及其天气类型 |
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| 引用本文： | 符传博,丹利,徐文帅,刘丽君.2015-2018年海南省臭氧污染特征及其天气类型[J].气象与环境学报,2021,37(6):27-35. |
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| 作者姓名： | 符传博 丹利 徐文帅 刘丽君 |
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| 作者单位： | 1. 海南省气象科学研究所, 海南 海口 5702032. 中国科学院大气物理研究所东亚区域气候-环境重点实验室, 北京 1000293. 海南省环境科学研究院, 海南 海口 5711264. 海南省南海气象防灾减灾重点实验室, 海南 海口 570203 |
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| 基金项目： | 国家自然科学基金(4265010);国家自然科学基金(41775011);海南省重大科技计划项目(ZDKJ202007);海南省气象局科研项目(HNQXXT202002) |
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| 摘 要： | 根据2015—2018年海南省18个市县32个空气质量监测站O3浓度资料，分析了区域性O3污染（O3-8h浓度超标市县≥3个）时空变化特征，并对造成O3污染的天气系统进行主观分型。结果表明：2015—2018年海南省共有40 d发生了区域性O3污染，发生概率为2.73%。其中2015年和2017年达到了13 d，发生概率为3.56%，2018年为11 d（3.01%），2016年仅为3 d（0.82%）。发生区域性O3污染主要有4种天气类型：冷空气偏西下型、冷空气偏东下型、变暖高压脊型和热带系统型。其中冷空气偏西下型是最主要的天气类型，共出现了14 d，占所有天数的35%，且污染较重。不同天气类型下海南省O3污染表现出不同的分布特征。500 hPa有下沉气流、低层受东北风控制，有相对湿度低值区从中国东部向海南省延伸，地面位于冷高压底部或热带气旋西北侧，温度露点差在5 ℃以上等条件均有利于海南省区域性O3污染天气出现。
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| 关 键 词： | 臭氧 气象条件 天气分型 |
| 收稿时间： | 2020-07-24 |
Characteristics of ozone pollution and synoptic classifications in Hainan province from 2015 to 2018 |
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| Chuan-bo FU,Li DAN,Wen-shuai XU,Li-jun LIU.Characteristics of ozone pollution and synoptic classifications in Hainan province from 2015 to 2018[J].Journal of Meteorology and Environment,2021,37(6):27-35. |
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| Authors: | Chuan-bo FU Li DAN Wen-shuai XU Li-jun LIU |
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| Institution: | 1. Hainan Institute of Meteorological Science, Haikou 570203, China2. Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China3. Hainan Research Academy of Environmental Sciences, Haikou 571126, China4. Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China |
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| Abstract: | Based on the O3 concentration data at 32 air quality monitoring stations in 18 cities and counties in Hainan province from 2015 to 2018, the spatio-temporal variation characteristics of regional O3 pollution (defined as ≥ 3 cities and counties with O3 concentration during eight hours exceeding the standard) were analyzed, and the subjective classification of synoptic weather systems causing O3 pollution was conducted.The results show that 40 days are occurring regional O3 pollution in Hainan province from 2015 to 2018, with an occurrence probability of 2.73%.In 2015 and 2017, it reaches 13 days, with a probability of 3.56%, the following is 11 days in 2018 (3.01%), and the minimum is only 3 days in 2016 (0.82%).The synoptic systems affecting regional O3 pollution are classified into four patterns, including cold air westward circulation pattern, cold air eastward circulation pattern, warming high-pressure ridge pattern, and tropical system pattern.The cold air westward circulation pattern is the predominant regional O3 pollution pattern, occurring for 14 days, accounting for 35% of all days, with heavy pollution.Different synoptic system patterns show different distributed characteristics of regional O3 pollution.The conditions with downdraft at 500 hPa, northeast wind at a lower level, low relative humidity area extending from eastern China to Hainan province, Hainan locating at the bottom of cold high pressure or locating at the northwest side of the tropical cyclone, temperature dew point difference above 5℃ are helpful to occur the regional O3 pollution in Hainan province. |
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| Keywords: | Ozone Meteorological conditions Weather classification |
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