Simulating the role of subtropical stratocumulus clouds in driving Pacific climate variability
Simulating the role of subtropical stratocumulus clouds in driving Pacific climate variability
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模拟副热带层积云在驱动太平洋气候变化中的作用
DOI：
10.1175/jcli-d-13-00548.1
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发表时间：
2014
影响因子：
4.9
通讯作者：
B. Stevens
中科院分区：
文献类型：
--
作者：
K. Bellomo;A. Clement;T. Mauritsen;G. Rädel;B. Stevens
摘要本研究探讨了东北和东南太平洋副热带层积云区域对由与板状海洋耦合的大气环流模型（ECHAM6）模拟的太平洋气候变率模式的影响。在大气模型的辐射模块中改变了云液态水对底层海温的敏感性，以增加两个区域低云正反馈的强度。增强的低云反馈增加了十年和更长时间尺度上气候变化主要模式的持久性和变化。其他整合表明，东南太平洋影响赤道 ENSO 地区的气候变化，而东北太平洋的影响仍然仅限于北太平洋。本文的结果表明，海温、云量和大规模大气环流之间的正反馈可以解释太平洋的年代际气候变化。特别是亚热带地区的云反馈...
AbstractThis study examines the influence of the northeast and southeast Pacific subtropical stratocumulus cloud regions on the modes of Pacific climate variability simulated by an atmospheric general circulation model (ECHAM6) coupled to a slab ocean. The sensitivity of cloud liquid water to underlying SST is changed in the radiation module of the atmospheric model to increase the strength of positive low-cloud feedback in the two regions. Enhanced low-cloud feedback increases the persistence and variance of the leading modes of climate variability at decadal and longer time scales. Additional integrations show that the southeast Pacific influences climate variability in the equatorial ENSO region, whereas the effects of the northeast Pacific remain confined to the North Pacific. The results herein suggest that a positive feedback among SST, cloud cover, and large-scale atmospheric circulation can explain decadal climate variability in the Pacific Ocean. In particular, cloud feedbacks over the subtropica...
影响因子：
4.6
作者：
Dommenget, Dietmar;Haase, Sabine;Frauen, Claudia
通讯作者：
Frauen, Claudia
影响因子：
5.2
作者：
D. Dommenget
通讯作者：
D. Dommenget