中文摘要：

热带气旋(TC ) 上的外部核心的表面熵流动(SEF ) 的影响外部雨线活动在这研究被调查与一充分可压缩， nonhydrostatic 模型。有 20% 人工地增加并且减少的外部核心的 SEF 的控制模拟和二个敏感实验分别地被进行检验伪周期的外部雨线行为。更大的否定水平移流在提高 SEF 的实验由于由不对称的旋涡的更大的光线的风和积极贡献导致 outerrainband 活动的一个更长的时期。在控制和减少 SEF 的模拟的开发得好的外部雨线显著地限制 TC 紧张，而如此的紧张抑制影响在提高 SEF 的实验是不显著的。当在外部雨线加热的 diabatic 加强外部核心的正切的风，外部雨线的伪周期的活动贡献 TC 的内部核心的尺寸的伪周期的变化。

英文摘要：

The influence of outer-core surface entropy fluxes （SEFs） on tropical cyclone （TC） outer rainband activity is investigated in this study with a fully compressible,nonhydrostatic model.A control simulation and two sensitivity experiments with the outer-core SEF artificially increased and decreased by 20% respectively were conducted to examine the quasi-periodic outer rainband behavior.Larger negative horizontal advection due to the greater radial wind and the positive contribution by asymmetric eddies leads to a longer period of outer-rainband activity in the SEF-enhanced experiment.The well-developed outer rainbands in the control and SEF-reduced simulations significantly limit the TC intensity,whereas such an intensity suppression influence is not pronounced in the SEF-enhanced experiment.As diabatic heating in outer rainbands strengthens the outer-core tangential wind,the quasi-periodic activity of outer rainbands contributes to the quasi-periodic variations of the inner-core size of the TCs.