Insolation forcing of the Australian monsoon as controls of Pleistocene mega‐lake events
Insolation forcing of the Australian monsoon as controls of Pleistocene mega‐lake events
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DOI：
10.1029/2003gl018486
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发表时间：
2003-12
影响因子：
5.2
通讯作者：
K. Wyrwoll;P. Valdes
中科院分区：
文献类型：
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作者：
K. Wyrwoll;P. Valdes
最后一个C。在澳大利亚北方的季风区，30万年前就出现了面积比今天大一个数量级的大型湖泊。大气全球环流模式（AGCM）敏感性实验的结果表明，在更新世期间重复出现的大型湖泊阶段，以及这意味着强烈的季风流，可能与米兰科维奇日射强迫有关。AGCM实验集中在南半球低纬度，115，000年前的夏季日照高。详细的结果表明，澳大利亚季风的强烈反应，在当时较高的日照，与季风季节较长，降水量增加，从而产生更高的径流比现在。
During the last c. 300,000 years mega‐lakes with areas an order of magnitude greater than those of today occurred in the monsoon region of northern Australia. The results of an Atmosphere Global Circulation Model (AGCM) sensitivity experiment show that the repeated occurrence of mega‐lake phases during the Pleistocene, and the strong monsoon flow that this implies, can be related to Milankovitch insolation forcing. The AGCM experiment is centred on the Southern Hemisphere low‐latitude, summer insolation high of 115,000 years ago. The details of the results indicate a strong response of the Australian monsoon to the higher insolation at that time, with a longer monsoon season, increased precipitation and higher resultant runoff than at present.