CEDAR: Solar Activity Variations in the Topside Ionosphere Using Defense Meteorological Satellite Program (DMSP)

该项目将利用在整个太阳周期内从国防气象卫星计划（DMSP）获取的数据来扩展我们对上层电离层的了解。低纬度和中纬度的上层电离层受低空F区的影响较大。太阳通量的变化会使F区电离率产生较大的变化。此外，众所周知，F区风调节F峰的高度和密度。这会进一步影响上层电离层的离子组成和温度。这些变化是纬度、经度、季节、一天中的时间以及太阳活动等各种参数的函数。该项目的目标是建立观测到的F区动力学与一个完整太阳周期内上层甲板组成和温度之间的关系，作为上述参数的函数。这项工作将利用卫星数据进行。观测到的上层平均太阳周期变化也将与IRI模型和SAMI2等社区计算模型中反映的F峰数据进行比较。

This project will utilize data taken from the Defense Meteorological Satellite Program (DMSP) during an entire solar cycle to expand our knowledge of the topside ionosphere. The topside ionosphere at low and middle latitudes is strongly influenced by the behavior of the low altitude F region. Changing solar flux can produce large variations in the F region ionization rate. In addition, it is well known that F region winds modulate the height and the density of the F peak. This can further affect the ion composition and temperatures in the topside ionosphere. These changes are functions of various parameters like latitude, longitude, season, time of day as well as solar activity. The objective of this project is to establish the observed relationships between F region dynamics and the topside composition and temperatures over a complete solar cycle as functions of the above-mentioned parameters. This work will be carried out using satellite data. The observed average solar cycle variations in the topside will also be compared with the F peak data reflected in the IRI model and in the community computational models like SAMI2.