Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum -: Part 1:: experiments and large-scale features
Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum -: Part 1:: experiments and large-scale features
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DOI：
10.5194/cp-3-261-2007
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发表时间：
2007-01-01
影响因子：
4.3
通讯作者：
Zhao, Y.
中科院分区：
文献类型：
--
作者：
Braconnot, P.;Otto-Bliesner, B.;Zhao, Y.
通过古气候建模相互比较项目（PMIP 2）的第二阶段，现在可以使用最先进的气候模型对末次冰期最大期和全新世中期进行一套海洋-大气耦合模拟。本研究介绍了模拟气候的大尺度特征，并将新模型的结果与PMIP第一阶段的大气模型的结果进行了比较，PMIP第一阶段的海表温度是使用简单的板状海洋公式规定或计算的。我们考虑了气候变化的大尺度特征，指出了不同实验组之间的一些主要差异。我们特别表明，PMIP 1和PMIP 2模拟之间的系统差异是由于相互作用的海洋，如非洲季风在中全新世的放大或在LGM中纬度地区的降水变化。此外，PMIP 2模拟一般比PMIP 1模拟更好地与数据一致。
A set of coupled ocean-atmosphere simulations using state of the art climate models is now available for the Last Glacial Maximum and the Mid-Holocene through the second phase of the Paleoclimate Modeling Intercomparison Project ( PMIP2). This study presents the large-scale features of the simulated climates and compares the new model results to those of the atmospheric models from the first phase of the PMIP, for which sea surface temperature was prescribed or computed using simple slab ocean formulations. We consider the large-scale features of the climate change, pointing out some of the major differences between the different sets of experiments. We show in particular that systematic differences between PMIP1 and PMIP2 simulations are due to the interactive ocean, such as the amplification of the African monsoon at the Mid-Holocene or the change in precipitation in mid-latitudes at the LGM. Also the PMIP2 simulations are in general in better agreement with data than PMIP1 simulations.