论文标题
金星边界层动力学：Eolian运输和对流涡流
Venus boundary layer dynamics: eolian transport and convective vortex
论文作者
论文摘要
很少有航天器研究了维纳斯深层大气的动力学，这是了解表面与大气之间的相互作用所需的。最近的全局模拟表明，表面风的昼夜周期对行星边界层的深度产生了强烈的影响。我们建议使用湍流解析模型首次表征金星边界层和表面风的影响。模拟在赤道的低普通和高地形进行，中午和午夜进行。在高地形上解决了强大的昼夜周期，对流层在局部表面上方7 km处，垂直风为1.3 m/s。低平原中的边界层深度与观察到的沙丘场的波长一致。在中午，两个位置的解析表面风场都足够强大，可以提升灰尘颗粒并产生微型凹陷。对流漩涡在金星上首次解决。
Few spacecraft have studied the dynamics of Venus' deep atmosphere, which is needed to understand the interactions between the surface and atmosphere. Recent global simulations suggest a strong effect of the diurnal cycle of surface winds on the depth of the planetary boundary layer. We propose to use a turbulent-resolving model to characterize the Venus boundary layer and the impact of surface winds for the first time. Simulations were performed in the low plain and high terrain at the Equator and noon and midnight. A strong diurnal cycle is resolved in the high terrain, with a convective layer reaching 7 km above the local surface and vertical wind of 1.3 m/s. The boundary layer depth in the low plain is consistent with the observed wavelength of the dune fields. At noon, the resolved surface wind field for both locations is strong enough to lift dust particles and engender micro-dunes. Convective vortices are resolved for the first time on Venus.
