Local and Remote Impacts of Atmospheric Cloud Radiative Effects Onto the Eddy‐Driven Jet
Local and Remote Impacts of Atmospheric Cloud Radiative Effects Onto the Eddy‐Driven Jet
复制标题
大气云辐射效应对涡驱动射流的本地和远程影响
DOI：
10.1002/2017gl074901
复制
发表时间：
2017
影响因子：
5.2
通讯作者：
D. Frierson
中科院分区：
文献类型：
--
作者：
Oliver Watt‐Meyer;D. Frierson
本研究探讨了大气云辐射效应（ACRE）在大气环流模式中对大气外环流响应的传播原因。云开-关Klimate相互比较实验aquaplanet模拟的集合表明，这些响应包括不同大小的涡动驱动喷流的赤道向和极向位移。尽管热带地区的反应相对一致：对流层上层的加热，导致哈德利环流的加强，但这些不同的对流层外反应仍然发生。有人认为，涡驱动喷流响应是两种效应之间的竞争：云驱动喷流通过ACRE中的纬向梯度移动的局部影响，以及加强的Hadley单体的远程影响，导致涡驱动喷流向赤道移动。云辐射效应在热带和热带外分别开启的模拟明确地证明了这一点。
This study examines the cause of the spread of extratropical circulation responses to the inclusion of atmospheric cloud radiative effects (ACRE) across atmospheric general circulation models. The ensemble of Clouds On‐Off Klimate Intercomparison Experiment aquaplanet simulations shows that these responses include both equatorward and poleward shifts of the eddy‐driven jet of varying magnitudes. These disparate extratropical responses occur despite the relatively consistent response in the tropics: a heating in the upper troposphere, which leads to a strengthening of the Hadley cell. It is argued that the eddy‐driven jet response is a competition between two effects: the local influence of clouds driving shifts of the jet through meridional gradients in ACRE and the remote impact of a strengthened Hadley cell causing an equatorward shift of the eddy‐driven jet. Simulations in which cloud radiative effects are separately turned on in the tropics and extratropics demonstrate this explicitly.
影响因子：
4.4
作者：
Bracegirdle, Thomas J.;Shuckburgh, Emily;Wilcox, Laura J.
通讯作者：
Wilcox, Laura J.
影响因子：
6.8
作者：
Crueger, Traute;Stevens, Bjorn
通讯作者：
Stevens, Bjorn