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

利用中高层 (MU) 大气雷达进行高层大气/电离层研究

• 批准号: 0001265
• 负责人: William Oliver
• 金额: --
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001265&HistoricalAwards=false
• 关键词: Upper; Atmosphere; Ionosphere; Studies; Middle

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.

ATM-0001265奥利弗，威廉该奖项支持PI，博士后研究员和研究生的活动，继续分析位于日本Shigaraki的MU非相干散射雷达获得的电离层观测结果。这台仪器是位于亚洲区的唯一一台能够观测F区电离层中自由电子产生的微弱非相干散射的仪器。它是一种相位雷达，可以同时检测多个方向的信号。这种独特的能力是用来研究重力波的传播在F-区域内的统计发生和传播方向。该项目的研究将强调四个主题：风，温度，波浪和电场。将开发模型和新的数据同化算法来代表这些测量结果，以便与根据第一原理开发的全球环流模型进行比较。这些结果是亚洲地区此类测量的唯一长期单站时间序列，将是一个特别宝贵的资源。特别令人感兴趣的是称为“层风”技术的新数据分析程序，该技术使原始数据能够更有效地分析，以更大的信噪比提取多普勒频移信息。