东亚气候异常与东海赤潮发生频次的关系研究-海洋预报

东亚气候异常与东海赤潮发生频次的关系研究

作者：徐丽丽 ¹ 2 龚茂珣 ² 徐婷婷 ² 郑晓琴 ² 吕忻 ²

单位：1. 南京信息工程大学, 环境科学与工程学院, 江苏南京 211800;
2. 国家海洋局东海预

关键词：海气相互作用赤潮发生频次东亚季风气候变异

分类号：X55

出版年·卷·期（页码）：2013·30·第五期（8-14）

摘要：

从海气相互作用角度,利用东海区20年的赤潮实况资料以及EAR-40海洋高分辨率再分析资料,分析赤潮年际变化规律,重点研究赤潮发生频次与厄尔尼诺年份的相关关系,得出厄尔尼诺次年赤潮发生次数偏多的结论.同时探讨了东亚季风的年际变化及异常对东海赤潮的影响,尤其是东海近海对于气候异常的响应主要表现在近地层大气辐散能力增强,且大值区集中在长江口以南至台湾海峡海域,正与赤潮发生次数剧增的时间和海区相吻合.本文讨论了大尺度的气候异常对东海赤潮的影响,为赤潮的年度预测研究作提供分析依据,也为赤潮的监测和预警报工作提供新的思考角度.

According to the requirements of Marine disaster assessment and the annual forecast work of State Oceanic administration, we study the relationships between the east Asian monsoon anomalous and the red tide occurrence frequency in the East China Sea from the angle of air-sea interaction. Based on the 20 years red tides historical data and EAR - 40 high resolution re-analyzed data, red tide occurred frequency in the annual scale was analyzed, and the relationships between red tide occurrence frequency and El-Ni駉 year was derived, which showed that red tide becomes more frequent in the next year of EI-Ni駉. Meanwhile, the annual variation of the East Asia monsoon and exception on the influence of the red tides was discussed. The response to the climate anomalous in the offshore of the East China Sea performs as atmospheric divergence ability enhancement in the surface layer, and the extreme center appeared in the area from Changjiang river mouth to the Taiwan Strait, which coincided with the time and area of red tide outbreaks frequency excursion. The influence of the large-scale climate anomalies on red tide outbreaks frequency in the East China Sea was discussed, which provided reference for the annual prediction research work of the red tides and new thinking angle for monitoring and forecast warning work of red tide.

参考文献：

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