Development of an Antarctic Gravity Wave Imaging Network (ANGWIN) for Collaborative Mesospheric Research

开发用于中层合作研究的南极重力波成像网络（ANGWIN）

• 批准号: 1045356
• 负责人: Michael Taylor
• 金额: $ 37.04万
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-15 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1045356&HistoricalAwards=false
• 关键词: Development; Antarctic; Gravity; Wave; Imaging

This proposal is funded to achieve the overarching goal quantifying the properties, variability and momentum fluxes of short period (1 hour) mesospheric gravity waves and their dominant sources and effects over the Antarctic continent. These measurements are of high importance as gravity waves having small horizontal scales and large amplitudes and momentum fluxes are known to provide the majority of the mean and variable forcing in the mesosphere. Exploratory airglow studies from Antarctica have revealed a wealth of mesospheric wave activity and strong anisotropy in wave propagation headings and associated large differences in momentum fluxes at different sites. As these results suggest strong regional variability, the overall impact of gravity waves on the mesospheric dynamics over the vast Antarctic continent remains unknown. It is proposed to implement an international ANtarctic Gravity Wave Imaging Network (ANGWIN) that will provide an exceptional capability for investigating mesospheric gravity waves at selected sites encompassing the entire Antarctic continent. This network will capitalize on existing optical and radar measurement capabilities at eight well-established national research stations, strategically located around the continental coast at Halley Bay (UK), Syowa (Japan), Davis (Australia), McMurdo and South Pole (USA), and Rothera (UK), Ferraz (Brazil), Vernadsky (Ukraine) on the Antarctic Peninsula. As part of this project, the infrared (IR) all-sky mesospheric OH imagers will be installed at Davis, McMurdo, and Halley, and an all-sky near-IR imager at Vernadsky to augment the existing instrumentation and create an unprecedented capability for studying gravity wave properties at each site. It is important that ANGWIN create a novel opportunity for the international Antarctic research community to work together producing "high impact" science well above that which can be achieved individually. It is anticipated that the proposed collaborative imaging network will contribute substantially to graduate student education, both within the U.S. and abroad, and will lead to significant new research opportunities for graduate students.

该提案获得资助，以实现量化短周期（1小时）中间层重力波的特性、变率和动量通量及其在南极大陆的主要来源和影响的总体目标。这些测量是非常重要的，因为重力波具有小的水平尺度和大的振幅和动量通量，已知提供了中间层的大部分平均和可变强迫。对南极洲的探索性气辉研究揭示了大量的中间层波活动和波传播方向的强烈各向异性，以及与此相关的不同地点动量通量的巨大差异。由于这些结果表明存在很强的区域变化，因此重力波对广阔的南极大陆上空中层动力学的总体影响仍然未知。建议建立一个国际南极重力波成像网络，该网络将提供在包括整个南极大陆的选定地点调查中间层重力波的特殊能力。这一网络将利用八个完善的国家研究站现有的光学和雷达测量能力，这些研究站战略性地位于大陆海岸周围，分别位于哈雷湾（联合王国）、昭和（日本）、戴维斯（澳大利亚）、麦克默多和南极（美国），以及南极半岛上的罗瑟拉（联合王国）、费拉斯（巴西）、韦尔纳德斯基（乌克兰）。作为这一项目的一部分，将在戴维斯、麦克默多和哈雷安装全天空中间层OH红外成像仪，并在Vernadsky安装全天空近红外成像仪，以增强现有的仪器，并为研究每个地点的重力波特性创造前所未有的能力。重要的是，ANGWIN为国际南极研究界创造了一个新的机会，共同努力，产生远高于单独实现的“高影响”科学。预计拟议的协作成像网络将大大有助于研究生教育，无论是在美国和国外，并将导致研究生的重大新的研究机会。