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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Coordinated airglow observations between IMAP/VISI and a ground-based all-sky imager on concentric gravity wave in the mesopause
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Coordinated airglow observations between IMAP/VISI and a ground-based all-sky imager on concentric gravity wave in the mesopause

机译：IMAP / VISI之间协调的大气光观察和一个地面全天成像仪同心重力波中气层顶

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摘要

We present a study of concentric gravity waves (CGWs) event from the coordinated observation between Ionosphere, Mesosphere, upper Atmosphere, and Plasmasphere mapping (IMAP)/Visible and near-Infrared Spectral Imager (VISI), all-sky camera at Rikubetsu, Multi-functional Transport Satellite (MTSAT), Tropical Rainfall Measuring Mission, and MF radar at Wakkanai combined with Modern-Era Retrospective Analysis for Research and Application data. IMAP/VISI is the first space-based imager that capable of imaging the airglow in themesosphere and lower thermosphere region in the nadir-looking direction. Therefore, it has a unique ability to observe a great extend of CGWs propagation. Arc-like shaped, part of CGWs pattern was observed around themesopause (~95 km) in the O_2 762 nmairglow emission obtained by IMAP/VISI at 1204 UT on 18 October 2012. Similar patterns were also observed by the all-sky imager at Rikubetsu (43.5°N, 143.8°E) in OI 557.7 nm and OH band airglow emissions from ~1100 to 1200 UT. Horizontal wavelengths of the observed small-scale gravity waves are ~50 km (OH band and OI 557.7nm) and ~67 km (O_2 762nm). The source is suggested to be a deep convective activity over Honshu Island which likely was an enhanced convective activity related to a typhoon in the south of Japan. The data showed that the CGWs could propagate up to ~1400–1500km horizontally from the source to the mesopause but not farther away. Using atmospheric temperature profiles obtained by Thermospheric Ionosphere Mesosphere Energetics Dynamics/Sounding of the Atmosphere using Broadband Emission Radiometry, we conclude that this long-distance propagation of the waves could be caused by thermal duct in the middle atmosphere. The arc-like shaped instead of full circle pattern points out that the wind filtering effect is significant for the particular direction of wave propagation.
机译：我们同心重力波的研究(CGWs)事件的协调一致的观察电离层之间的中间层,上层大气,和等离子体层(IMAP) /可见光和映射近红外光谱成像仪(VISI),全天相机在Rikubetsu,多功能交通卫星(MTSAT)、热带降雨测量使命,MF Wakkanai结合雷达一回顾性分析进行研究和应用程序数据。天基成像,成像的能力大气光在大气中间层和降低热大气层地区nadir-looking方向。它有一个独特的观察一个伟大的扩展能力CGWs传播。CGWs themesopause周围观察模式(约95公里)的成分762 nmairglow发射通过IMAP / VISI 1204 UT 10月18日2012. 全天在Rikubetsu成像仪(43.5°N, 143.8°E)OI 557.7 nm,哦带大气光排放~ 1100到1200 UT。观察到小规模的重力波~ 50公里(哦乐队和OI 557.7 nm)和~ 67公里(成分762海里)。源建议深对流可能是一个活动在本州岛增强的对流活动与台风有关在日本的南部。CGWs可以传播~ 1400 - 1500公里从源代码中气层顶但水平不是很远的地方。配置文件通过Thermospheric电离层中间层能量动力学/测深大气中使用宽带发射辐射测量、我们得出结论,这种远距离传播海浪可以由热导管引起的中间的气氛。而不是完整的循环模式指出风过滤效果是显著的特定方向的波传播。

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