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文章摘要
上海海陆风特征及其对臭氧浓度的影响
Characteristics of Sea Land Breeze and Its Impact on Ozone Concentrations in Shanghai
  
DOI:
中文关键词: 臭氧  海陆风  大气污染  统计分析  上海
英文关键词: Ozone  Sea land breeze  Air pollution  Statistical analysis  Shanghai
基金项目:国家自然科学基金资助项目(41271055,91644221);上海市社会发展领域科研基金资助项目(16DZ1204600,17DZ1203100);国家重点研发计划基金资助项目(2016YFC0201805)
作者单位
何礼 华东师范大学 
束炯 华东师范大学 
钟方潜 上海市环境监测中心 
段玉森 上海市环境监测中心 
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中文摘要:
      利用2013—2016年常规气象观测数据和再分析资料,提出上海地区海陆风判断标准,统计了该地区的海陆风发生规律。同时,结合地面空气质量监测数据,分析了海陆风环流对臭氧(O3)浓度的影响。结果表明:上海地区的海陆风发生频率在3—8月份较高,与海陆温差年变化之间存在显著相关性;海风通常开始于当地时间9:00前后,结束于20:00前后,最大风速出现在15:00前后,平均风速为3.9 m/s;海陆风发生时O3质量浓度峰值被抬高(16 μg/m3),且峰值出现时间延后;海陆风的影响可深入上海内陆青浦淀山湖地区,对污染物浓度的影响程度沿海大于内陆。
英文摘要:
      Based on the conventional meteorological data and reanalysis data from 2013 to 2016, a judgment criteria of sea land breeze in Shanghai was established and its characteristics were studied. Meanwhile, combined with air quality monitoring data, the impact of sea land breeze on ozone concentration was analyzed. The results showed that the sea land breeze occurred frequently from March to August, which significantly correlated with the temperature difference between land and sea in Shanghai. Generally, the sea breeze started at around 9:00 and ended at around 20:00, the maximum wind velocity appeared at around 15:00, the average wind speed was 3.9 m/s. When sea land breeze blew, the peak value of ozone concentration rose (16 μg/m3), and delayed occurrence. The sea land breeze would intrude on Shanghai inland area Dianshan Lake, and the pollutant concentration in the coastal region was influenced more than that from inland.
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