西北太平洋地区臭氧的分布特征及其与台风过程的关系

Analyse on the ozone distribution pattern and the relationship with typhoon process in the Pacific Northwest

分析了西北太平洋地区O_3的时空分布特征,利用欧洲中心O_3垂直分层再分析资料和O_3柱总量资料,对西北太平洋地区对流层内各个等压面上O_3的分布情况进行逐一分析.使用后向轨迹法追踪台风对O_3分布的影响可知:台风中心附近的上升气流将低层O_3含量较低的空气向上层输送,使得较上层的O_3减少,形成O_3低值区.利用个例分析方法分析"鲇鱼"及"风神"台风发生区域内大气O_3柱总量变化趋势,得出以下结论:台风中心邻近区域出现大气O_3柱总量距平低值区,在台风的发展及成熟阶段,台风强度指数PDI和大气O_3柱总量的距平值具有一定的相关性.

The ozone distribution at North western Pacific Ocean was analysed based on the vertical ozonereanalysis data and total ozone column data derived from the European Centre for Medium-Range Weather Fore-casts ,by analyzing the ozone distribution of the isobaric troposphere in the North western Pacific Ocean.Based onHYSPLIT of NOAA Air Resources laboratory to track the typhoon＇s influence on the distribution of ozone, the ac-tivity of typhoon can modify the lower tropospheric ozone distribution, the updraft carried the low level air withless ozone concentration to the upper layers, causing the decrease of the ozone.The changes of total ozone columnduring the typhoon process of Megi and Fengshen around region are analyzed as a case study.The following con-clusions indicate that the typhoon center adjacent area in total atmospheric column ozone is a low value area, thetyphoon intensity index PDI and the value of the total atmospheric column ozone has a certain relationship in thedevelopment and mature of the typhoon.