Ionisation of the Middle Atmosphere by Energetic Particles

来自不同来源的高能带电粒子污染大气，从而导致大气的自然变化。高层和中层大气的气候学需要详细描述不同时间尺度上的粒子效应。目前，对沉降颗粒后果的描述在很大程度上依赖于数值模型。EISCAT提供了测试和完善这些模型的独特机会，并开发了大气降水颗粒气候学。除了模式的校准和扩展之外，该项目还试图建立一个考虑粒子事件和磁层条件的大变化的粒子相关气候学。还将特别注意降水粒子和极地中层夏季回波（PMSEs）之间的可能关系。在Bündelantrag内，它与莱比锡大学和IAP的项目直接相关。

Energetic charged particles from different sources ionize the atmosphere and thus contribute to natural atmospheric variability. A climatology of the upper and middle atmosphere requires an elaborate description of particle effects on different temporal scales. Presently, a description of precipitating particle consequences relies heavily on numerical models. EISCAT provides the unique opportunity to test and refine these models and to develop a climatology of the atmosphere due to precipitating particles. Asides from the calibrations and extension of models this project attempts to establish a particle related climatology considering the large variability in particle events as well as magnetospheric conditions. Special attention will also be paid to a possible relation between precipitating particles and polar mesospheric summer echoes (PMSEs). Within the Bündelantrag it is directly related to the projects of the University of Leipzig and the IAP.