Dynamics of the Antarctic MLT Region Using Ground-Based Radar and TIMED Instruments

使用地基雷达和 TIMED 仪器研究南极 MLT 区域的动态

• 批准号: 0000957
• 负责人: Susan Avery
• 金额: $ 22.48万
• 依托单位: University of Colorado at Boulder
• 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: 2000-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000957&HistoricalAwards=false
• 关键词: Dynamics; Antarctic; MLT; Region; Using

ATM0000957absThe investigators will study the dynamics of the mesosphere and lower thermosphere over Antarctica using measurements from the TIMED instruments and a meteor radar to be installed at South Pole station. Specific science objectives include: the space-time decomposition of wave motions; delineation of the spatial climatology over Antarctica with emphasis on the structure of the polar vortex; dynamical response to energetic events; and interannual variability. The proposed meteor radar is a VHF system that will be able to measure the spatial structure and temporal evolution of the horizontal wind field over the South Pole. The investigators will also make use of existing ground-based radars at Davis, Syowa, Rothera, and Scott Base in the determination of the spatial climatology. Wind and temperature measurements to be made by NASA's TIMED satellite during orbits over the South Pole will provide opportunities for combined ground-based and space-based experiments and validation activities.

ATM0000957调查人员将利用计时仪器和将安装在南极站的流星雷达的测量结果，研究南极上空中间层和低热层的动力学。具体的科学目标包括：波动的时空分解；描述南极洲上空的空间气候学，重点是极地涡旋的结构；对高能事件的动力反应；以及年际变化。拟议的流星雷达是一种甚高频系统，将能够测量南极上空水平风场的空间结构和时间演变。调查人员还将利用戴维斯、西奥瓦、罗瑟拉和斯科特基地现有的地面雷达来确定空间气候学。美国国家航空航天局的定时卫星将在南极上空轨道上测量风和温度，这将为地面和空间联合进行实验和验证活动提供机会。