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本文利用TIMED卫星搭载的SABER探测仪对全球中间层顶信息进行了研究,包括中间层顶的高度、温度及其季节和纬度变化,并对双中间层顶现象进行了分析.中间层顶的温度约在160～180K之间变化,高度在85～100km内变化,温度和高度都是冬季高夏季低,有着较为一致的变化趋势.中间层顶高纬呈现显著年变化,而低纬和赤道呈现弱的半年变化,南北半球的中间层顶信息有着不对称性.高纬地区的双中间层顶现象十分显著,中间层顶一般会从100km附近迅速降低至85km附近.根据长时间范围内平均的结果显示,北半球的双中间层顶现象在20°N—30°N的中纬范围开始发生,证实了北半球双中间层顶现象不再仅限于极区和中高纬地区.而南半球则仍是在50°S才显著发生双中间层顶现象.我们统计了中高纬地区夏季所有的单个观测剖面并且与当年冬季的平均背景剖面相比较,数据显示,较低的夏季第二中间层顶高度绝大多数比冬季中间层顶低12～16km.
In this paper, we use the satellite SABER detector on the TIMED satellite to study the information of the global middle layer, including the height, temperature of the middle layer, seasonal and latitudinal changes of the middle layer, About 160 ~ 180K, the height changes in 85 ~ 100km, the temperature and the height are both high in winter and low in summer, and have a consistent trend of change.The top latitude of the middle layer shows a significant annual change, while the low latitude and the equator show Weak semi-annual change, the information of the middle layer in the northern and southern hemisphere has asymmetric information.The phenomenon of double middle layer top in the high latitudes is very obvious, and the top of the middle layer generally decreases rapidly from around 100 km to 85 km.According to the long-term average The results show that the double middle layer top phenomenon in the northern hemisphere begins in the mid-latitude range of 20 ° N-30 ° N, confirming that the phenomenon of the double middle layer top in the northern hemisphere is no longer limited to the polar region and mid-high latitude regions, while the southern hemisphere is still at 50 ° S. The statistics of all single summer monsoon profiles in mid-high latitudes and compared with the average background profiles of the current winter show that the lower The second intermediate layer top quarter height lower than the majority of 12 ~ 16km top of the intermediate layer in winter.