|
银川市臭氧污染特征及其气象条件诊断分析 |
Ozone Pollution Characteristic and Its Meteorological Condition Diagnosis in Yinchuan |
|
DOI: |
中文关键词: 臭氧 污染特征 气象条件 预警指标 环流特征 银川市 |
英文关键词: Ozone Pollution characteristic 〖HK〗Meteorological condition Early warning index Circulation characteristic Yinchuan |
基金项目:宁夏回族自治区重点研发计划基金资助项目(2018BEG03067,2019BFG02025);中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室基金资助项目(CAMP-201909) |
|
摘要点击次数: 857 |
全文下载次数: 33 |
中文摘要: |
利用2017年银川市区O3监测数据和同期气象资料,分析O3污染时间变化特征,在对高浓度O3污染发生时段典型气象特征诊断分析的基础上,初步总结银川市O3污染气象要素预警指标和典型环流特征。结果表明:银川市近地面O3浓度春夏季高、秋冬季低,其月浓度峰值一般出现在夏季6月或7月;O3浓度白天高、夜间低,日O3浓度峰值一般出现在14:00—18:00之间;当14:00地面紫外辐射>30 W/m2、气温高于28 ℃、相对湿度低于40%、风向为偏东或偏南风时发生高浓度O3污染的概率较高;500 hPa大陆高压脊前西北气流型和地面热低压底部东南气流型是银川市发生O3污染的典型环流特征。 |
英文摘要: |
According to O3monitoring data and meteorological data in 2017 in Yinchuan, the time varying characteristics of O3 pollution were studied. Based on the diagnosis of typical meteorological characteristics during high O3 pollution, the early warning indexes of meteorological factors and typical circulation characteristics of O3 pollution in Yinchuan were preliminarily summarized. The results showed that near surface O3 concentration in Yinchuan was high in spring and summer, low in autumn or winter. The peak value of O3 monthly concentration occurred in June or July. O3 concentration was high in daytime and low in nighttime. The peak value of O3 daily concentration occurred between 14:00 and 18:00. At 14:00 when surface ultraviolet radiation was greater than 〖GK0!23*3/4〗〖JP〗30 W/m2 , air temperature was higher than 28 ℃, relative humidity was lower than 40% and wind direction was easterly or southerly, high concentration of O3 〖JP〗appeared probably. Northwest airflow pattern of before 500 hPa continental high pressure ridge and southeast airflow pattern of surface thermal depression bottom were typical circulation characteristics of O3 pollution in Yinchuan. |
查看全文
查看/发表评论 下载PDF阅读器 |
关闭 |