Collaborative Research: Modeling of Secondary and Tertiary Gravity Waves from Orographic Gravity Wave Forcing and Comparison with Satellite Observations

合作研究：地形重力波强迫的二次和三次重力波建模以及与卫星观测的比较

• 批准号: 1834222
• 负责人: James Russell
• 金额: $ 7.51万
• 依托单位: Hampton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1834222&HistoricalAwards=false
• 关键词: Collaborative; Research; Modeling; Secondary; Tertiary

This collaborative project involving both NWRA and Hampton University supports a study of atmospheric dynamics within the region of the Earth's atmosphere that is not accessible by low Earth orbiting satellites or by balloons. Air that is associated with the wind flow over mountainous terrain is disturbed by a class of 'primary' atmospheric gravity waves (GWs) that is called 'mountains waves' (MWs). These waves break or reach critical levels in the lower or middle atmosphere at altitudes below 70 km. This process not only creates small-scale secondary GWs with horizontal wavelengths considerably less than that of the MWs, but also creates horizontal 'body forces' (i.e., horizontal accelerations localized in space and time). These in turn are thought to excite a broad spectrum of secondary GWs with horizontal wavelengths larger than that of the MWs. The main objective of the research is to quantify to the extent possible the effect that secondary and tertiary GWs from MW attenuation has on the thermosphere (the neutral atmosphere above 200 km) via this multi-step coupling process. The research includes a unique combination of detailed, targeted modeling combined with data analyses studies. A graduate student associated with Hampton University would participate in the research work described.Several different simulations would be used in sequence to simulate the entire process. Data from the Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite would be analyzed to extract GWs parameters observed for specific regions on Earth, and the simulations will be compared to these satellite observations. The project will involve applying these results to the study of MWs to investigate the extent to which secondary and tertiary waves that affect the thermosphere are produced. The research if successful should significantly advance the research community's understanding of the process of momentum transfer from orographic forcing to the thermosphere via GWs in this multi-step coupling process. This research is expected to lead to a much better appreciation of the variability and structure of the thermosphere from these processes (i.e., space weather from below) thus helping to achieve a significant broader impact because a predictive capability might possibly be developed for such thermospheric wave structures were this momentum transfer process be understood much more completely as a result of research work represented by this award.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.

这个涉及 NWRA 和汉普顿大学的合作项目支持对近地轨道卫星或气球无法到达的地球大气区域内的大气动力学研究。与山区风流相关的空气受到一类称为“山波”(MW) 的“初级”大气重力波 (GW) 的干扰。这些波在海拔 70 公里以下的低层或中层大气中破裂或达到临界水平。这一过程不仅产生了水平波长远小于微波波长的小规模次级引力波，而且还产生了水平“体力”（即，局部于空间和时间的水平加速度）。这些反过来又被认为会激发水平波长大于微波波长的广谱次级引力波。该研究的主要目标是通过多步耦合过程尽可能量化兆瓦衰减产生的二级和三级引力波对热层（200公里以上的中性大气）的影响。该研究包括详细、有针对性的建模与数据分析研究的独特组合。汉普顿大学的一名研究生将参与所描述的研究工作。将依次使用几种不同的模拟来模拟整个过程。来自重力场和稳态海洋环流探测器（GOCE）卫星的数据将被分析，以提取地球上特定区域观测到的引力波参数，并将模拟结果与这些卫星观测结果进行比较。该项目将涉及将这些结果应用于微波研究，以调查影响热层的二次波和三次波产生的程度。如果这项研究成功，将极大地促进研究界对多步耦合过程中通过引力波从地形强迫到热层的动量传递过程的理解。这项研究预计将有助于更好地了解这些过程（即来自下方的太空天气）的热层变化和结构，从而有助于实现更广泛的影响，因为可能会为此类热层波开发预测能力作为该奖项所代表的研究工作的结果，这种动力传递过程得到了更全面的理解。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

First Direct Observational Evidence for Secondary Gravity Waves Generated by Mountain Waves Over the Andes

安第斯山脉上空的山浪产生的次级重力波的第一个直接观测证据

• DOI: 10.1029/2020gl088845
• 发表时间: 2020-09
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Kogure, Masaru;Yue, Jia;Nakamura, Takuji;Hoffmann, Lars;Vadas, Sharon L.;Tomikawa, Yoshihiro;Ejiri, Mitsumu K.;Janches, Diego
• 通讯作者: Janches, Diego

Gravity Wave Weakening During the 2019 Antarctic Stratospheric Sudden Warming

2019年南极平流层突然变暖期间重力波减弱

• DOI: 10.1029/2021gl092537
• 发表时间: 2021-01-18
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Masaru Kogure;J. Yue;Huixin Liu
• 通讯作者: Huixin Liu

Characteristics of the Quiet‐Time Hot Spot Gravity Waves Observed by GOCE Over the Southern Andes on 5 July 2010

2010年7月5日GOCE观测到的安第斯山脉南部安静时间热点重力波特征

• DOI: 10.1029/2019ja026693
• 发表时间: 2019-08
• 期刊: Journal of Geophysical Research: Space Physics
• 作者: Vadas, Sharon L.;Xu, Shuang;Yue, Jia;Bossert, Katrina;Becker, Erich;Baumgarten, Gerd
• 通讯作者: Baumgarten, Gerd

Dynamical Coupling Between Hurricane Matthew and the Middle to Upper Atmosphere via Gravity Waves

马修飓风与中高层大气之间通过重力波的动态耦合

• DOI: 10.1029/2018ja026453
• 发表时间: 2019-05-01
• 期刊: Journal of Geophysical Research: Space Physics
• 作者: Shuang Xu;J. Yue;X. Xue;S. Vadas;S. Miller;I. Azeem;W. Straka;L. Hoffmann;Simin Zhang
• 通讯作者: Simin Zhang