GENERAL CIRCULATION AND THE DYNAMICAL STATE OF THE VENUS ATMOSPHERE
GENERAL CIRCULATION AND THE DYNAMICAL STATE OF THE VENUS ATMOSPHERE
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金星大气环流和动态状态
DOI：
10.2307/j.ctv25c4z16.25
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
G. Schubert
中科院分区：
文献类型：
--
作者：
G. Schubert
金星大气环流的主要模式是整个大气层的纬向逆行超旋转，从最低尺度高度到超过100公里的高度，其角动量约为固体行星角动量的0.15%。这些数值表明，两个水库之间可能存在显著的角动量交换，产生的日长变化可能在数小时的量级，因此可以被地面雷达探测到。涡旋、平均纬向环流和行星尺度波都可能参与逆行角动量的向上输送，以维持大气的反旋。在低层大气中已经观察到涡旋，它也可以在纬度和垂直方向上输送热量和动量。波存在于整个大气中，在很宽的空间尺度范围内。平均纬向环流和纬向环流关于赤道可能不对称。
The principal mode of atmospheric circulation on Venus is a zonal retrograde superrotation of the entire atmosphere, from the lowest scale height to altitudes of more than 100 km, with an angular momentum that is about 0.15 percent of the solid planet angular momentum. These values suggest the possibility of significant angular momentum exchanges between the two reservoirs, yielding day length changes that may be of the order of hours and could therefore be detected by earth-based radar. Eddies, the mean meridional circulation, and planetary-scale waves may all be involved in the upward transport of retrograde angular momentum to maintain atmospheric counterrotation. Eddies have been observed in the lower atmoshere and may also transport heat and momentum latitudinally and vertically. Waves are present throughout the atmosphere, over a wide range of spatial scales. The mean zonal and meridional circulations may not be symmetric about the equator.