Climate Anomalies Induced by the Arctic and Antarctic Oscillations: Glacial Maximum and Present-Day Perspectives
Climate Anomalies Induced by the Arctic and Antarctic Oscillations: Glacial Maximum and Present-Day Perspectives
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北极和南极涛动引起的气候异常：盛冰期和当今的观点
DOI：
10.1175/2007jcli1703.1
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发表时间：
2008
影响因子：
4.9
通讯作者：
W. Peltier
中科院分区：
文献类型：
--
作者：
F. Justino;W. Peltier
摘要基于现代气候和极盛期气候的多世纪耦合模拟，本文着重研究了北极涛动（AO）和南极涛动（AAO）对地球表面气候的影响。两个气候时期的数值试验中获得的结果的相互比较表明，高度显着的地面气候变化预测已经发生的AO和AAO的阶段。这些气候异常在现代和末次盛冰期（LGM）状态之间有很大的不同，并在后一种条件下表现出强烈的季节性循环。进一步的研究表明，在北大西洋和北太平洋的副热带环流的加强，在AO的正相位期间诱导起着关键作用，在中纬度地区的海表温度（SST）正异常的发展。在南半球，类似的显著和系统性的气候变化被证明是由于...
Abstract Based on multicentury coupled climate simulations of both modern and glacial maximum conditions, this study focuses on the impact of the Arctic Oscillation (AO) and the Antarctic Oscillation (AAO) on the earth’s surface climate. Intercomparison of the results obtained in numerical experiments for both climate epochs demonstrates that highly significant changes of surface climate are predicted to have occurred depending upon the phase of the AO and AAO. These climate anomalies differ substantially between the modern and Last Glacial Maximum (LGM) states and exhibit a strong seasonal cycle under the latter conditions. Additional investigation has revealed that an intensification of the subtropical gyres in the North Atlantic and North Pacific that are induced during the positive phase of the AO plays a key role in the development of positive sea surface temperature (SST) anomalies in midlatitudes. In the Southern Hemisphere, similarly significant and systematic climate shifts are shown to occur due...