2008年青岛海域浒苔大爆发天气特征及成因分析

Cause Analysis and Synoptic Characteristics for Outbreaks of Enteromorpha Around Qingdao in 2008

2008年6-7月,青岛近海海域出现了浒苔大爆发事件。本文通过分析卫星遥感的浒苔监测信息和海面风场资料表明,浒苔在5月中旬前后生成于黄海西北部海域,5,6月份黄海上空维持偏南风流场,在风应力作用下产生了偏北向表层海流,青岛海域大量积聚的浒苔是顺流漂移而至的。进一步分析研究气象和水文观测资料表明,浒苔的发生与海洋环境及降水、光照等水文气象条件有关。6,7月份浒苔漂移至青岛海域时,青岛的气温升高,降水较往年偏多,天气特征更加促进了浒苔的生长,因而造成2008年青岛海域浒苔大爆发事件。

By the analysis of satellite remote sensing monitoring of Enteromorpha and sea-surface wind field information, enteromorpha occurred at northwest of Yellow Sea in mid-May. There were southerly wind persistent over the Yellow Sea in the month of May and June, as a result, lots of enteromorpha drifted to the off- shore of Qingdao by northly ocean currents under the wind stress. Further analysis of meteorological and hydrological observation data showed that the marine environment and weather conditions such as heavy rainfall was advantageous for the growth of enteromorpha. When enteromorpha drifted to the offshore of Qingdao. The temperature and abundant precipitation in June and July promoted the growth of enteromorpha, resulting in large outbreaks of enteromorpha around Qingdao in 2008.