Quasi-stationary planetary waves in the middle atmosphere of Mars

Using the temperature profiles retrieved from the Mars Climate Sounder（MCS） instrument onboard Mars Reconnaissance Orbiter（MRO） satellite between November 2006 and April 2013, we studied the seasonal and interannual variability of QuasiStationary Planetary Waves（QSPWs） in the Martian middle atmosphere. The QSPW amplitudes in the Southern Hemisphere（SH） high latitudes are significantly stronger than those in the Northern Hemisphere（NH）. Seasonal variation with maximum amplitude near winter solstice of each hemisphere is clearly seen. The vertical structure of the QSPW in temperature shows double-layer feature with one peak near 50 Pa and the other peak near 1 Pa. The QSPW in geopotential height is clearly maximized in the region between two temperature peaks. The maximum amplitude of QSPW for s=1 is ~8–10 K in temperature and ~1 km in geopotential height in the SH high latitudes. The maximum amplitude at the SH high latitudes in Mars Year（MY） 31 is ~2 K stronger than those in other MYs, suggesting the clear interannual variability. We compared the satellite results with those obtained from the Mars Climate Database（MCD） simulation version 5.0; a reasonable agreement was found. The MCD simulation further suggested that the variability of dust might partially contribute to the interannual variability of QSPW amplitude.

用温度，侧面从火星气候检索了更健全(MCS ) 在在 2006 年 11 月和 2013 年 4 月之间的火星侦察 Orbiter (MRO ) 卫星上的仪器，我们学习了季节并且在火星的中间的空气的伪静止的行星的波浪(QSPW ) 的 interannual 可变性。在南部的半球的 QSPW 振幅(嘘) 高纬度是比在北半球(NH ) 的那些显著地强壮的。有每个半球的冬至附近的最大的振幅的季节的变化清楚地被看见。在温度的 QSPW 的垂直结构在 1 Pa 附近在 50Pa 和另外的山峰附近与一座山峰显示出双层特征。在 geopotential 高度的 QSPW 清楚地在在二座温度山峰之间的区域被最大化。为 s=1 的 QSPW 的最大的振幅在在嘘高的纬度的 geopotential 高度是在温度和 1 km 的 810 K。在火星年里的嘘高的纬度的最大的振幅(我的) 31 是比在另外的 MYs 的那些强壮的 2 K，建议清楚的 interannual 可变性。我们把卫星结果与那些从火星气候数据库(MCD ) 模拟版本获得了作比较 5.0；一个合理协议被发现。MCD 模拟进一步建议灰尘的可变性可能部分贡献 QSPW 振幅的 interannual 可变性。