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

重力波（GWs）对整个大气中的平均风产生影响，在地球的天气和气候中起着重要作用。具有较大振幅的较小尺度GWs可能在这些总体动态中起主要作用，但目前对其统计数据和影响知之甚少。此外，这些gw基本上是未解决的，在大尺度模型中也没有考虑到。这项拟议的研究将解决这些科学问题，这些问题代表了航空学界的一个重要需求。为此，PI将利用高级中间层温度测绘仪（AMTMs）、共振激光雷达和位于犹他州洛根市贝尔湖天文台（BLO）的北极中部大气研究激光雷达观测站（ALOMAR）的雷达的联合测量，以及最近在新西兰进行的DEEPWAVE机载和地面现场测量计划中部署的这些仪器。这些早期的相关测量能力，由美国国家科学基金会资助，已经证明了极好的潜力来量化GW动量通量，以及GW特性，这些特性解释了这些通量，在一定程度上是传统气辉成像仪或风廓线雷达或激光雷达无法做到的。这项研究将导致多尺度MLT动力学的多个案例的量化，从而促进对其各种效应的理解。这些分析还将用于指导这些动力学的数值研究，以进一步量化它们的影响，并有助于在大尺度模型中参数化这些动力学。这项研究将促进MLT测量和模拟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，也可能发生在其他行星大气中，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， inc.， Boulder的Dave Fritts博士的指导下进行。此外，PI将继续指导附近科罗拉多大学的本科生，为新生提供更多了解大气科学的机会。

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.