Upper Atmosphere/Ionosphere Studies with the Middle and Upper (MU) Atmosphere Radar

该奖项支持PI的活动，博士后研究员和研究生继续分析电离层观测数据，这些观测数据是由位于日本茂木大学的非相干散射雷达获得的。该仪器是亚洲地区唯一一台能够观测f区电离层中自由电子产生的弱非相干散射的仪器。它是一种相位雷达，可以同时探测多个方向的信号。这种独特的能力被用来研究重力波在f区域内的传播，根据发生的统计和传播方向。该项目研究将强调四个主题：风、温度、海浪和电场。将开发模型和新的数据同化算法来表示这些测量结果，以便与根据第一性原理开发的全球环流模型进行比较。这些结果构成了亚洲地区此类测量的唯一长期单站时间序列，将是一项特别宝贵的资源。特别令人感兴趣的是新的数据分析程序，称为“层风”技术，它可以更有效地分析原始数据，以更大的信噪比提取多普勒频移信息。

ATM-0001265Oliver, WilliamThis award supports the activities of the PI, a post-doctoral fellow, and a graduate student in continuing the analysis of the ionospheric observations obtained by the MU incoherent scatter radar located in Shigaraki, Japan. This instrument is the only one located in the Asian sector that is capable of observing the weak incoherent scatter originating from free electrons existing in the F-region ionosphere. It is a phase radar which makes possible the simultaneous detection of signals in multiple directions. This unique capability is used to study the propagation of gravity waves within the F-region in terms of statistics of occurrences and directions of propagation. The project research will emphasize four themes: winds, temperatures, waves, and electric fields. Models and new data assimilation algorithms will be developed to represent these measurements for comparison with global circulation models that are developed from first principles. These results form the only long-term, single-station time series of such measurements from the Asian sector and will be a particularly valuable resource. Of particular interest is the new data analysis procedure called the "layer wind" technique that enables the raw data to be analyzed more effectively to extract Doppler shift information with a greater ratio of signal to noise.