AGS-PRF: Gravity Wave Multi-Scale Interactions and Measurements

AGS-PRF：重力波多尺度相互作用和测量

• 批准号: 1524598
• 负责人: Katrina Bossert
• 金额: $ 8.6万
• 依托单位: Bossert Katrina
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-02-01 至 2018-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1524598&HistoricalAwards=false
• 关键词: AGS; PRF; Gravity; Wave; Multi

Gravity waves (GWs) play important roles in Earth's weather and climate due to their impact on the mean winds throughout the atmosphere. Smaller-scale GWs with large amplitudes likely play a major role in these overall dynamics, but currently very little is known about their statistics and influences. Additionally, these GWs are essentially unresolved and not accounted for in large-scale models. This proposed research will address these science questions, which represent a significant need within the Aeronomy community. For this purpose the PI will utilize combined measurements from the Advanced Mesosphere Temperature Mappers (AMTMs), resonance lidars, and radars located at the Arctic Lidar Observatory for Middle Atmospheric Research (ALOMAR), at Bear Lake Observatory (BLO) in Logan, UT, and these instruments deployed together during the recent DEEPWAVE airborne and ground-based field measurement program at New Zealand. These earlier correlative measurement capabilities, funded by NSF, have demonstrated an excellent potential to quantify GW momentum fluxes, and the GW characteristics that account for these fluxes, to a degree not possible with traditional airglow imager or wind profiling radars or lidars.This research will result in quantification of multiple cases of multi-scale MLT dynamics that advance the understanding of their various effects. These analyses will also be used to guide numerical studies of these dynamics to further quantify their influences and aid efforts to parameterize such dynamics in large-scale models. This research will foster beneficial collaborations between the MLT measurement and modeling communities, as well as provide an opportunity for collaboration on GW coupling between different areas of the atmosphere from the troposphere up through the MLT region. Since multi-scale dynamics also occur throughout the atmosphere and oceans, and likely in other planetary atmospheres, this research would benefit efforts to understand key GW roles in all of these fluid systems. The research will be carried out under the mentorship of Dr. Dave Fritts at GATS, inc., Boulder. Additionally, the PI will continue to mentor undergraduate students from the nearby University of Colorado, providing opportunities for new students to learn more about atmospheric science.

重力波对大气中的平均风场有着重要的影响，它对地球的天气和气候有着重要的作用。具有大振幅的小规模全球变暖可能在这些整体动力学中发挥重要作用，但目前对它们的统计和影响知之甚少。此外，这些GW基本上是未解决的，并且没有在大规模模型中考虑。这项拟议的研究将解决这些科学问题，这代表了Aeronomy社区的重大需求。为此目的，PI将利用先进中间层温度成像仪（AMTM）、共振激光雷达和位于犹他州洛根熊湖观测站（BLO）的北极中层大气研究激光雷达观测站（ALOMAR）的雷达的综合测量结果，以及在新西兰最近的DEEPWAVE机载和地基现场测量计划期间一起部署的这些仪器。这些早期的相关测量能力，由美国国家科学基金会资助，已经证明了一个很好的潜力，以量化GW动量通量，和GW的特点，占这些通量，在一定程度上不可能与传统的气辉成像仪或风廓线雷达或lidars.This研究将导致量化的多个案例的多尺度MLT动态，推进他们的各种影响的理解。这些分析还将用于指导这些动态的数值研究，以进一步量化其影响，并帮助在大规模模型中对这些动态进行参数化。这项研究将促进MLT测量和建模社区之间的有益合作，并为从对流层到MLT区域的大气不同区域之间的GW耦合提供合作机会。由于多尺度动力学也发生在整个大气和海洋中，并且可能在其他行星大气中，因此这项研究将有助于了解GW在所有这些流体系统中的关键作用。这项研究将在GATS公司的Dave Fritts博士的指导下进行，巨石此外，PI将继续指导附近的科罗拉多大学的本科生，为新生提供更多关于大气科学的机会。