CEDAR: Theoretical Modelling for the MISETA Initiative

拟议的研究是为了支持低纬度热层和电离层的数值模拟和理论建模，作为拟议的MISETA倡议的一部分。MISETA（赤道热层航空多仪器研究）试图在秘鲁的Jicamarca和Arequipa进行测量，使用相干和非相干散射雷达、地空探空仪、间隔闪烁接收器、Fabry Perot干涉仪和全天成像仪。这些仪器将提供中性和噪声大气的数据，包括垂直和纬向漂移的测量、电子密度、离子、电子和中性温度、纬向和经向中性风、扩散f和电喷流观测。重点讨论了热层-电离层耦合动力学；要探讨的主题包括大气重力波在观测扩散f现象中的作用，纬向中性风和半球间运输对赤道电动力学的纬度梯度的重要性，午夜压力膨胀对理解扩散f的开始及其对季节的依赖的意义，以及地磁风暴对低纬度地区的影响。这个特别的提案寻求资助，允许达特茅斯学院的一名研究生参与MISETA计划。该学生将参与MISETA数据集的数值模拟和NCAR热层-电离层环流模式（TIGCM）和热层-电离层-电动力学环流模式（TIEGCM）的理论研究。

The proposed research is to support numerical simulations and theoretical modelling of the low latitude thermosphere and ionosphere as part of the proposed MISETA initiative. MISETA (Multi-Instrument Studies of Equatorial Thermosphere Aeronomy) seeks to carry out measurements at Jicamarca and Arequipa, Peru, by coherent and incoherent scatter radar, digisonde, spaced scintillation reciever, Fabry Perot interferometer and all-sky imager. These instruments will provide data on the neutral and inoized atmosphere including measurements of vertical and zonal drifts, electron densities, ion, electron, and neutral temperatures, zonal and mericonal neutral winds, and spread_F and electrojet observations. Emphasis is on the coupled thermosphere- ionosphere dynamics; topics to be explored include the role of atmosphereic gravity waves in seeing spread-F phenomena, the importance of latitudinal gradients in the zonal neutral wind and interhemispheric transport for equatorial electrodynamics, the significance of the midnight pressure bulge in understanding the onset of spread-F and its dependence upon season, and geomagnetic storm effects at low latitudes. This particular proposal seeks funding to allow participation of a graduate student at Dartmouth College in the MISETA initiative. The student would participate in numerical simulations of the MISETA data sets and theoretical studies with the NCAR thermosphere-ionosphere general circulation model (TIGCM) and the thermosphere-ionosphere-electrodynamics general circulation model (TIEGCM).