摘要
本研究利用2022年9月第11号台风过程系统监测资料,欧洲中心ERA5再分析数据,结合气象要素和空气质量数据,研究了9月3—10日台风“轩岚诺”靠近、转向对盐城臭氧污染的影响。结果表明:台风靠近盐城期间,外围风圈作用下,风速最高达13.7 m∕s,风场为东北风控制,东北方向海上的湿热水汽输送至盐城,带来了零散的降水过程,O_(3)浓度与气温相关性不高,主要为高湿度对O_(3)的生成起到了抑制作用,近地面盛行上升气流,扩散条件较好;台风转向后,与蒙古冷涡合并,风场为西南风控制,内陆地区高温低湿水汽输送至盐城,同时副高北上控制盐城,气温迅速升高,O_(3)浓度与温度正相关性显著达0.88,与湿度负相关性显著达-0.79。高温低湿的大气条件为臭氧生成提供了有利的光化学条件,此外受下沉气流影响,近地面污染物不易扩散,造成了O_(3)中度污染。
Using the monitoring data of the 11th typhoon process system on September 11,2022,the European Center ERA5 reanalysis data,combined with meteorological elements and air quality data,studied the impact of typhoon"Hinnamnor"approaching and turning on ozone pollution in Yancheng from September 3 to 10 in this study.The results showed that during the typhoon′s approach to Yancheng,the wind speed reached a maximum of 13.7 m∕s under the influence of the outer wind circle,the wind field was controlled by northeast winds,and the humid and hot water vapor from the northeast direction was transported to Yancheng,bringing scattered precipitation processes,the correlation between O3 concentration and temperature was not high,mainly due to the inhibitory effect of high humidity on the generation of O3.Upwelling airflow was prevalent near the ground,and the diffusion conditions were good;after the typhoon turned,it merged with the Mongolian cold vortex,and the wind field was controlled by southwest winds,high temperature and low humidity water vapor in the inland areas were transported to Yancheng,while the subtropical high moved northward to control Yancheng,causing a rapid increase in temperature,the positive correlation between O3 concentration and temperature was significantly to 0.88,and the negative correlation with humidity was significantly to-0.79.The high temperature and low humidity atmospheric conditions provide advantageous photochemical conditions for ozone generation,in addition,due to the influence of sinking airflow,pollutants near the ground are not easily diffused,resulting in moderate pollution of O3.
作者
咸月
沈磊
郭振东
徐曼嫚
孙楠
XIAN Yue;SHEN Lei;GUO Zhendong;XU Manman;SUN Nan(Yancheng Environmental Center of Jiangsu Province,Yancheng 224000,China;Jiangsu Yangjing Environmental Protection Service Co.,Ltd,Lianyungang 222000,China;Nanjing University of Information Science and Technology,Nanjing 211200,China)
出处
《环境影响评价》
2024年第6期90-96,共7页
Environmental Impact Assessment
基金
监测科研基金(2121)。
关键词
台风
O_(3)
气象要素
天气形势
typhoon
O3
meteorological elements
weather situation
作者简介
咸月(1984-),女,江苏盐城人,本科,主要从事环境影响评价、环境手工、自动监测等工作,E-mail∶xianyue620@163.com;通讯作者:孙楠(2001-),男,江苏南京人,本科,主要从事环境污染溯源、环境影响评价等工作,E-mail∶1146834823@qq.com。
