Large- and Small-scale Dynamics and Meteor Studies in the MLT with a New-generation Meteor Radar on King George Island

乔治王岛新一代流星雷达在 MLT 中的大、小尺度动力学和流星研究

• 批准号: 0839084
• 负责人: David Ortland
• 金额: $ 75万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0839084&HistoricalAwards=false
• 关键词: Large; Small; scale; Dynamics; Meteor

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The project will employ a sophisticated meteor radar at the Brazilian Antarctic station Comandante Ferraz on King George Island for a number of synergetic research efforts of high interest to the international aeronomical community. The location of the radar will be at the tip of the Antarctic Peninsula - at a critical southern latitude of 62 degrees - to fill a current measurement gap from 54 to 68 degrees south. The radar will play a key role in Antarctic and inter-hemispheric studies of neutral atmosphere dynamics, defining global mesosphere and lower thermosphere structure and variability (from 80 to 105 km) and guiding advances of models accounting for the dynamics of this high-altitude region, including general circulation models, and climate and numerical weather prediction models. The unique radar measurement sensitivity will enable studies of: (1) the large-scale circulation and planetary waves, (2) the tidal structure and variability, (3) the momentum transport by small-scale gravity waves, (4) important, but unquantified, gravity wave - tidal interactions, (5) polar mesosphere summer echoes, and (6) meteor fluxes, head echoes, and non-specular trails, a number of which exhibit high latitudinal gradients at these latitudes. This radar will support extensive collaborations with U.S. and other scientists making measurements at other Antarctic and Arctic conjugate sites, including Brazilian scientists at C. Ferraz and U.S. and international colleagues having other instrumentation in the Antarctic, Arctic, and within South America. Links to the University of Colorado in the U.S., Instituto Nacional de Pesquisas Espaciais (INPE) in Brazil and Universidad Nacional de La Plata in Argentina will provide unique research opportunities for graduate and undergraduate students in the U.S. and South America.

该奖项是根据2009年《美国复苏与再投资法》（公法111-5）资助的。该项目将在乔治岛国王岛上的巴西南极火车站Comandante Ferraz采用复杂的流星雷达，用于国际航空社区的许多协同研究工作。雷达的位置将位于南极半岛的尖端 - 在62度的临界南纬，以填补南方54至68度的当前测量空隙。雷达将在中性大气动力学的南极和半球间研究中起关键作用，定义全球中层和较低的热层结构和可变性（从80到105 km），并指导模型的指导进步，这些模型涉及该高水位区域的动力学，包括一般循环模型，以及气候和数值天气预测模型。独特的雷达测量敏感性将启用：（1）大尺度循环和行星波，（2）潮汐结构和可变性，（3）小型重力波的动量传输，（4）重要的，（4）重要，但无量化的重力，重力，潮汐 - 潮汐 - 潮汐 - （5）Meslose summer eChoEs和fleer Echo和6），（6），（6）MEDER，（6）MEDER和6）MEDER ECHOR，MEDER ECHOR，MEDER ECHORES，MEDER和6）群众相关（6）群岛和6）。非特定径径，其中许多在这些纬度上表现出高纬度梯度。这一雷达将支持与美国和其他科学家进行广泛的合作，在其他南极和北极共轭地点进行测量，包括C. Ferraz的巴西科学家以及美国和国际同事在南极，北极，北极和南美内拥有其他乐器。与美国科罗拉多大学的链接，巴西的Nacional de Pesquisas Espaciais（INPE）和阿根廷的Nacional de la Plata大学将为美国和南美的研究生和本科生提供独特的研究机会。