Preliminary Dual-Satellite Observations of Atmospheric Gravity Waves in Airglow
Preliminary Dual-Satellite Observations of Atmospheric Gravity Waves in Airglow
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DOI：
10.3390/atmos10110650
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发表时间：
2019-10
期刊：
影响因子：
2.9
通讯作者：
J. Yue;S. Perwitasari;Shuang Xu;Y. Hozumi;Takuji Nakamura;T. Sakanoi;A. Saito;S. Miller;W. Straka;P. Rong
中科院分区：
文献类型：
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作者：
J. Yue;S. Perwitasari;Shuang Xu;Y. Hozumi;Takuji Nakamura;T. Sakanoi;A. Saito;S. Miller;W. Straka;P. Rong
大气重力波是对流层向中高层大气传递能量和动量的重要机制之一。尽管它们在管理这些区域的结构和动力学方面的重要性已被理解，但中层AGW在全球范围内的测量仍然很差，并且在数值模型中基本上不受约束。自2011年底以来，Suomi国家极轨伙伴关系可见光/红外成像辐射计套件昼夜波段（DNB）凭借其对OH* Meinel波段弱发射的敏感性，观测到了中层顶附近的全球AGW。波的功能，在0.75公里的空间分辨率在其3000公里的图像条带检测，往往混淆了城市的灯光和云反射下行夜光的上升流发射。电离层、中间层、高层大气和等离子体光谱仪（IMAP）/可见光和近红外光谱成像仪（VISI）O2波段是2012-2015年期间基于国际空间站（ISS）的夜光AGW结构的独立测量，包含来自低层大气的噪音要少得多。然而，VISI提供了14-16公里的粗分辨率和600公里的窄扫描带宽度。在这里，我们提出了初步的VIIRS/DNB和VISI观测AGW之间的比较结果，重点是在2013年8月东亚雷暴激发的几个同心AGW事件。比较点建议改进未来星载气辉传感器设计目标AGW。
Atmospheric gravity waves (AGWs) are among the important energy and momentum transfer mechanisms from the troposphere to the middle and upper atmosphere. Despite their understood importance in governing the structure and dynamics of these regions, mesospheric AGWs remain poorly measured globally, and largely unconstrained in numerical models. Since late 2011, the Suomi National Polar-orbiting Partnership (NPP) Visible/Infrared Imaging Radiometer Suite (VIIRS) day–night band (DNB) has observed global AGWs near the mesopause by virtue of its sensitivity to weak emissions of the OH* Meinel bands. The wave features, detectable at 0.75 km spatial resolution across its 3000 km imagery swath, are often confused by the upwelling emission of city lights and clouds reflecting downwelling nightglow. The Ionosphere, Mesosphere, upper Atmosphere and Plasmasphere (IMAP)/ Visible and near-Infrared Spectral Imager (VISI) O2 band, an independent measure of the AGW structures in nightglow based on the International Space Station (ISS) during 2012–2015, contains much less noise from the lower atmosphere. However, VISI offers much coarser resolution of 14–16 km and a narrower swath width of 600 km. Here, we present preliminary results of comparisons between VIIRS/DNB and VISI observations of AGWs, focusing on several concentric AGW events excited by the thunderstorms over Eastern Asia in August 2013. The comparisons point toward suggested improvements for future spaceborne airglow sensor designs targeting AGWs.