Pan-Antarctic Investigations of Mesospheric Wave Dynamics and Influences Using the ANGWIN Network

使用 ANGWIN 网络对中层波动力学和影响进行泛南极研究

• 批准号: 2029318
• 负责人: Michael Taylor
• 金额: $ 116.24万
• 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: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2029318&HistoricalAwards=false
• 关键词: Pan; Antarctic; Investigations; Mesospheric; Wave

Gravity waves (GW) are waves generated in a fluid medium or at the interface between two media when the forces of gravity and buoyancy work against each other trying to restore equilibrium. Wind-generated waves on the water surface are examples of gravity waves, as are tsunamis and ocean tides. Gravity waves are also observed in abundance in the atmosphere where air layers with different density interact with each other and transport enormous amount of energy and momentum over large distances. These waves are key drivers of the air general circulation and temperature distributions through the middle and upper atmosphere; they also affect many weather-related processes. This award will continue studies of gravity waves at the continental-wide scale in the upper atmosphere over Antarctica. With the wide collaboration of several National Antarctic Programs, these waves will be further investigated to quantify their properties, variability, momentum fluxes and dominant sources within the Mesosphere and Lower Thermosphere (MLT) region. This region is important to understand contributions of the MLT gravity waves to the upper atmosphere dynamics and allow better modeling their effects. There is a need to parameterize the GW effects while modeling climate changes and responses to variable solar forcing (aka "space weather"), as well as for numerical weather predictions that are of immense societal importance. The ANGWIN workshops provide an excellent forum for the in-depth involvement of national and international students and young researchers working together with mid-career scientists in the collaborative research and publications.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

重力波（GW）是当重力和浮力相互作用试图恢复平衡时，在流体介质中或两种介质之间的界面处产生的波。水面上的风生波是重力波的例子，海啸和海洋潮汐也是如此。在大气层中也观察到大量的重力波，不同密度的空气层相互作用，并在很长的距离上传输大量的能量和动量。这些波是中层和高层大气空气环流和温度分布的关键驱动因素;它们还影响许多与天气相关的过程。该研究金将继续研究南极洲上层大气中全大陆范围的重力波。在几个国家南极计划的广泛合作下，将进一步调查这些波，以量化其性质、变化、动量通量和中间层和低热层区域内的主要来源。该区域对于理解MLT重力波对高层大气动力学的贡献以及更好地模拟其影响非常重要。在模拟气候变化和对可变太阳强迫（又称“空间天气”）的反应以及具有巨大社会重要性的数值天气预测时，需要对GW效应进行参数化。ANGWIN研讨会为国内和国际学生以及年轻研究人员与职业中期科学家一起深入参与合作研究和出版提供了一个很好的论坛。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估来支持。

项目成果

Characteristics of Gravity Wave Horizontal Phase Velocity Spectra in the Mesosphere Over the Antarctic Stations, Syowa and Davis

昭和站和戴维斯站上空中间层重力波水平相速度谱特征

• DOI: 10.1029/2022jd037751
• 发表时间: 2023
• 期刊: Journal of Geophysical Research: Atmospheres
• 作者: Kogure, Masaru;Nakamura, Takuji;Murphy, Damian J.;Taylor, Michael J.;Zhao, Yucheng;Pautet, Pierre‐Dominique;Tsutsumi, Masaki;Tomikawa, Yoshihiro;Ejiri, Mitsumu K.;Nishiyama, Takanori
• 通讯作者: Nishiyama, Takanori