Investigating the effect of the Tibetan Plateau on the ITCZ using a coupled Earth system model

被引：0

作者：

Chuqiao Yan ^{[1
,2
]}

Jie Yao ^{[3
]}

Xingchen Shen ^{[4
]}

Haijun Yang ^{[1
,2
]}

机构：

[1] Department of Atmospheric and Oceanic Sciences and CMA-FDU Joint Laboratory of Marine Meteorology,Fudan University

[2] Shanghai Scientific Frontier Base for Ocean-Atmosphere Interaction Studies,Fudan University

[3] Department of Atmospheric and Oceanic Sciences,School of Physics,Peking University

[4] Science & Technology on Integrated Information System Laboratory,Institute of Software,Chinese Academy of Sciences

来源：

Atmospheric and Oceanic Science Letters | 2023年 / 16卷 / 01期

基金：

中国国家自然科学基金;

关键词：

青藏高原; 热带辐合带; 耦合地球气候模式; Hadley环流; 热量输送;

D O I：

暂无

中图分类号：

P46 [气候学]; P73 [海洋基础科学];

学科分类号：

0706 ; 070601 ; 0707 ;

摘要：

本文利用耦合地球气候系统模式研究了青藏高原对热带辐合带(ITCZ)的影响.我们研究发现热带大西洋ITCZ的位置对青藏高原存在与否有明显的敏感性.与目前真实情况相比,移除青藏高原会导致北半球海面降温,南半球海面升温.这种海面温度变化在大西洋表现得尤为明显,导致热带大西洋最大海温中心向南移动,从而迫使大气对流中心向南移动,即表现为ITCZ的南移.相应地,夏季热带大气Hadley环流的上升支也发生明显南移.北(南)半球海洋变冷(变暖)这种态势要求增强跨赤道向北的大气经向热量输送,从而维持各个半球的能量平衡,而这需要ITCZ位置的南移才能实现.本文研究表明,青藏高原的存在在现今ITCZ气候态的形成中可能扮演了重要角色.

引用

页码：55 / 60

页数：6

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