热带海洋学报 ›› 2015, Vol. 34 ›› Issue (4): 23-30.doi: 10.11978/j.issn.1009-5470.2015.04.003

• 海洋水文学 • 上一篇    下一篇

基于HYCOM和遥感资料研究障碍层在促进台风海展过程中的作用

陈俊尧1, 2, 杜岩1, 张玉红1   

  1. 1. 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301;
    2. 中国科学院大学, 北京 100049;
  • 收稿日期:2014-10-30 出版日期:2015-08-10 发布日期:2015-08-21
  • 通讯作者: 杜岩。E-mail: duyan@scsio.ac.cn
  • 作者简介:陈俊尧(1989~), 男, 广东省东莞市人, 硕士研究生, 主要从事海气相互作用。E-mail: chenjunyao@scsio.ac.cn
  • 基金资助:

    中国科学院先导专项(XDA11010103); 全球变化研究国家重大科学研究计划(“973”)项目(2012CB955603)

Impact of barrier layer on typhoon Haiyan intensification based on HYCOM and remote-sensing data

CHEN Jun-yao1, 2, DU Yan1, ZHANG Yu-hong1   

  1. 1.State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences),Guangzhou 510301, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China;
  • Received:2014-10-30 Online:2015-08-10 Published:2015-08-21

摘要:

台风海燕是历史上罕见的超强台风, 本研究利用HYCOM再分析资料和卫星遥感资料数据, 研究了热带西太平洋暖池区障碍层对台风海燕发展的促进作用。台风海燕在热带西北太平洋东部生成后向西移动, 2013年11月3日到11月5日从热带低压发展为超强台风, 此时经过的海域普遍存在深厚的障碍层。由于障碍层内暖水的存在, 热带气旋引起的垂直混合作用和抽吸作用较难使温跃层的冷水进入混合层, 海表面降温效应减弱。高的海表面温度通过潜热释放的方式持续提供能量给热带气旋, 促进其强度提升。此外, 在台风海燕过境时产生了大量降水, 上层海洋层化加强, 混合层变浅, 又使得其路径及周边海域障碍层加厚。

关键词: HYCOM, 遥感, 障碍层, 台风海燕

Abstract:

Typhoon Haiyan was a supertyphoon rarely seen in history. Based on HYCOM and remote-sensing data, we investigated the role of barrier layer in the developing phase of typhoon Haiyan evolution. Typhoon Haiyan moved westward over the warm water with a thick barrier layer underneath after it was generated in the eastern part of the Northwest Pacific warm pool. It became a tropical depression on November 3 and developed into a supertyphoon on November 5, 2013. Due to the warm water in barrier layer, the barrier layer reduced vertical mixing and entrainment caused by Typhoon Haiyan, preventing the cold thermocline water from entering the mixed layer. As a result, self-induced sea surface temperature cooling associated with Typhoon Haiyan was suppressed. Further, high sea surface temperature continued to provide heat to Typhoon Haiyan in the form of latent heat flux releasing, which favored quick intensification of typhoon. As Typhoon Haiyan passed by, large amount of precipitation resulted in the shoaling of mixed layer, which favored a new barrier layer to form along its path.

Key words: HYCOM, remote sensing, barrier layer, Typhoon Haiyan