论文标题
控制行星气候季节性的关键因素
The Key Factors Controlling the Seasonality of Planetary Climate
论文作者
论文摘要
几个不同的因素会影响行星的季节性周期。这项研究使用一般循环模型和能量平衡模型（EBM）来评估控制季节周期的参数。我们定义两个指标来描述季节性周期，$ ϕ_s $，最高温度的纬度移位和$ΔT$，即最大季节性温度变化幅度。我们表明，除了对倾斜和轨道时期的预期依赖性，在这些参数增加时季节性加强，季节性以非平凡的方式取决于旋转率。虽然季节性振幅随着旋转速度的减速而降低，但纬度偏移（$ ϕ_s $）却在极点移动。相似的结果在扩散的EBM中发生，扩散率提高。这些结果表明，旋转速率对季节性周期的影响源于旋转速率对大气热传输的影响。
Several different factors influence the seasonal cycle of a planet. This study uses a general circulation model and an energy balance model (EBM) to assess the parameters that govern the seasonal cycle. We define two metrics to describe the seasonal cycle, $ϕ_s$, the latitudinal shift of the maximum temperature, and $ΔT$, the maximum seasonal temperature variation amplitude. We show that alongside the expected dependence on the obliquity and orbital period, where seasonality generally strengthens with an increase in these parameters, the seasonality depends in a nontrivial way on the rotation rate. While the seasonal amplitude decreases as the rotation rate slows down, the latitudinal shift, $ϕ_s$, shifts poleward. A similar result occurs in a diffusive EBM with increasing diffusivity. These results suggest that the influence of the rotation rate on the seasonal cycle stems from the effect of the rotation rate on the atmospheric heat transport.
