热带印度洋环流动力与季风相互作用研究进展

Research progress on the interaction between tropical Indian Ocean circulation dynamics and monsoon

围绕中国科学院战略性先导科技专项"泛第三极环境变化与绿色丝绸之路建设"之子课题"热带印度洋环流动力与季风相互作用及其影响",从热带印度洋上层海洋环流、盐度变异对印度洋典型海气耦合过程的影响、印度洋海气相互作用及其对泛第三极水汽输送的影响方面回顾了热带印度洋环流动力与季风相互作用的研究进展.针对国内外研究发展的现状,提出热带印度洋上层经向、纬向、垂向流系间三维联动机制,海盆尺度热盐再分配对局地海-气模态变异的响应和反馈机制,热带印度洋典型海气耦合模态对泛第三极地区气候变化的影响机理等关键科学问题亟待解决.开展该子课题研究的最终目标是:全面认识和理解热带印度洋上层环流体系,加深印度洋海洋环流动力与海气相互作用及其对泛第三极经向水汽输送作用的理解,提高泛第三极地区气候预测水平,提升丝绸之路海上观测航道监测保障能力,从而为"一带一路"倡议和"21世纪海上丝绸之路"建设服务.

Based on the sub-project“Interaction between tropical Indian Ocean circulation dynamics and monsoon and its effect”of the Strategic Priority Research Program of the Chinese Academy of Sciences“Pan-Third Pole environment change study for green Silk Road development”,this paper summarizes research progresses on the upper tropical Indian Ocean circulations,the effect of salinity variability on the classical air-sea coupled processes in the Indian Ocean,and the climatic influence of air-sea interaction in the Indian Ocean on the moisture transport over the Pan-Third Pole.Three key scientific issues are then emphasized as follow:three-dimensional linkage mechanism of the upper Indian Ocean circulation variability,response and feedback mechanism of air-sea interactions to the basin-scale thermohaline redistribution in the Indian Ocean,and influence mechanism of Indian Ocean air-sea coupled modes on the climate change over the Pan-Third Pole.Finally,the ultimate objective of this sub-project are also stated,which are:to overall understand the upper ocean circulation systems in the tropical Indian Ocean and advance the understanding of the influence of air-sea interaction in the Indian Ocean on the moisture transport over the Pan-Third Pole;to improve the prediction skill of the Pan-Third Pole climate and promote the security ability of Indian Ocean expedition and channel monitor on the maritime Silk Road;and finally to serve the Belt and Road Initiative.