Gravity waves, cold pockets and CO2 clouds in the Martian mesosphere
Gravity waves, cold pockets and CO2 clouds in the Martian mesosphere
复制标题
火星中间层的重力波、冷区和二氧化碳云
DOI：
10.1029/2011gl050343
复制
发表时间：
2012
影响因子：
5.2
通讯作者：
Francois Forget
中科院分区：
文献类型：
--
作者：
A. Spiga;F. González;M. López‐Valverde;Francois Forget
许多独立的测量表明，在火星中间层发现了极冷的温度。这些中间层“冷袋”可能是大气波传播的结果。最近的观测成果也暗示了这种寒冷的口袋，揭示了通过二氧化碳冷凝形成的中间层云，火星大气的主要成分。到目前为止，针对火星中间层存在冷袋的建模研究已经探索了大尺度环流的影响。中尺度现象，如重力波，受到的关注较少。在这里，我们通过多尺度气象模拟表明，中尺度重力波可能在形成有利于CO2凝结的中间层冷袋中发挥关键作用。
Many independent measurements have shown that extremely cold temperatures are found in the Martian mesosphere. These mesospheric “cold pockets” may result from the propagation of atmospheric waves. Recent observational achievements also hint at such cold pockets by revealing mesospheric clouds formed through the condensation of CO2, the major component of the Martian atmosphere. Thus far, modeling studies addressing the presence of cold pockets in the Martian mesosphere have explored the influence of large‐scale circulations. Mesoscale phenomena, such as gravity waves, have received less attention. Here we show through multiscale meteorological modeling that mesoscale gravity waves could play a key role in the formation of mesospheric cold pockets propitious to CO2 condensation.