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<專題討論>2021/4/29(四)14:10綜合大樓2樓48218教室演講 : 黃泰瑩 教授(美國賓州州立大學 物理系)

張貼者:2021年4月25日 下午7:33Dabby Lu
講題: An Overview of the Interactions, Dynamics, and Energetics in the Atmosphere (IDEA) Research
摘要: An overview of our research projects by the Interaction, Dynamics, and Energetics in the Atmosphere (IDEA) team will be presented with the latest results and future projects.  As we know, gravity waves are ubiquitous and play an important role in the energy and dynamics in the atmosphere, especially in the Mesosphere and Lower Thermosphere (MLT) region.  Their interactions with airglow presents a unique opportunity to probe this region remotely.   The projects aim to study gravity wave-airglow interactions, dynamics, and energetics in the atmosphere with a coordinated effort using a numerical approach, ground-based and spaceborne observations.  We have used OHCD and MACD chemistry dynamics models to investigate airglow variations and heating rates induced by gravity waves.  Using airglow and temperature observations from Andes Lidar Observatory, atomic oxygen from SABER, and numerical modeling, we found that the O1S greenline intensity enhancement accompanied by an OH intensity weakening can be explained by a long-period wave with the wave characteristics of a semi-diurnal tide.  We use modeling with observations to find the branching ratios of the three-body recombination for O1S and O2 airglow emissions.  Finding trends by the influences of solar cycle variation, geomagnetic activity, and CO2 increase is conducted by numerical simulations and airglow observations. Exploring metal layers and expanding the work to include the F region among other projects will be discussed.   
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Dabby Lu,
2021年4月25日 下午7:33
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