Extratropical control of tropical climate, the atmospheric bridge and oceanic tunnel
Extratropical control of tropical climate, the atmospheric bridge and oceanic tunnel
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DOI：
10.1029/2002gl016492
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发表时间：
2003-03
影响因子：
5.2
通讯作者：
Zhengyu Liu;Haijun Yang
中科院分区：
文献类型：
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作者：
Zhengyu Liu;Haijun Yang
一项海气耦合模式研究表明，温带对热带气候的影响与热带对温带气候的影响一样强烈。全球温带海表温度升高2°C会使赤道海洋表层和次表层温度升高约1°C。表层温度变化是由哈得来环流的大气桥（70%）和温跃层俯冲的海洋通道（30%）引起的，而次表层温度变化主要是由海洋通道驱动的。此外，对赤道的主要影响来自南半球的大气和海洋。
A coupled ocean‐atmosphere model study shows that the extratropical impact on tropical climate is as strong as the tropical impact on extratropical climate. A 2°C SST warming in the global extratropics increases equatorial ocean temperature by ∼1°C in the surface and subsurface. The surface temperature change is caused by the atmospheric bridge of the Hadley circulation (70%) and the oceanic tunnel of thermocline subduction (30%), while the subsurface temperature change is forced predominantly through the oceanic tunnel. Furthermore, the dominant influence on the equator comes from the southern hemisphere atmosphere and ocean.