Influence of plate reference frames on deep-time climate simulations
Influence of plate reference frames on deep-time climate simulations
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DOI：
10.1016/j.gloplacha.2023.104352
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发表时间：
2024-01-13
影响因子：
3.9
通讯作者：
Guo，Zhengtang
中科院分区：
文献类型：
--
作者：
Zhang，Zijian;Zhang，Zhongshi;Guo，Zhengtang
利用地幔或古地磁参照系，可以在板块构造模型上绘制深部古地理图。板块位置是古气候模拟的重要边界条件，不同的参考框架会导致板块位置的差异。在这里，使用三个早始新世古地理图，我们展示了参考框架的影响，模拟大气环流与挪威地球系统模型。这三个地图，一个使用古地磁和其他两个使用地幔参考框架，我们的模拟显示出显着的差异，在模拟的一般气候特征，特别是在太平洋地区。与地幔参考架相比，古地磁参考架导致太平洋步行者环流变窄变强，Hadley环流变不对称，北太平洋副热带高压变强。
Deep-time paleogeographic maps can be constructed on plate tectonic models that utilize mantle or paleomagnetic reference frames. Different reference frames result in divergence in plate positions, which are important boundary conditions in deep-time paleoclimate simulations. Here, using three early Eocene paleogeographic maps, we demonstrate the impact of reference frames on the simulated atmospheric circulations with the Norwegian Earth System Model. With these three maps, one using the paleomagnetic and the other two using the mantle reference frame, our simulations show significant differences in the simulated general climatic characteristics, especially in the Pacific region. The paleomagnetic reference frame leads to a narrower and stronger Pacific Walker Circulation, more asymmetrical Hadley Circulations, and a stronger subtropical high in the North Pacific, compared to the mantle reference frame.