A SGER Proposal to Study the Sunlit Cusp at Sondre Stromfjord, Greenland During Winter 2000-2001

这项3万美元的SGER奖支持波士顿大学科学家的一项运动，该运动旨在获得格陵兰岛桑德雷·斯特罗姆峡湾的日间观测数据。这项工作将以应用两个复杂的成像光谱仪为基础，这两个成像光谱仪的设计目的是在白天天空中存在大量瑞利散射连续体的情况下测量极光发射。这些测量将与Sonderstrom雷达对电子密度剖面的观测同时进行，以确定e区电离层电导率。该数量的雷达测量值将与基于e区电子密度与从光学测量推断出的极光中沉淀粒子能量的模型计算出的电导进行比较。这一努力将确定白天应用两种光学仪器的可行性，并将利用当前的太阳极大活动期。

This SGER award for $30,000 supports a campaign by Boston University scientists designed to obtain daytime observations at Sondre Stromfjord, Greenland. This effort would be based upon the application of two sophisticated imaging spectrographs designed to make measurements of auroral emissions in the presence of the large Rayleigh-scattered continuum of the daytime sky. These measurements would be conducted simultaneously with the Sonderstrom radar observations of electron density profiles to obtain a determination of the ionospheric conductances in the E-region. The radar measurements of this quantity would be compared with the calculated conductance based upon a model that relates E-region electron densities to the energy of precipitating particles in aurora that would be inferred from the optical measurements. This effort would establish the feasibility of the daytime application of both optical instruments and would also take advantage of the current period of solar maximum activity.