Observations of Stratospheric Gravity Waves Over Europe on 12 January 2016: The Role of the Polar Night Jet
Observations of Stratospheric Gravity Waves Over Europe on 12 January 2016: The Role of the Polar Night Jet
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DOI：
10.1029/2020jd032893
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
K. Bossert;S. Vadas;L. Hoffmann;E. Becker;V. Harvey;M. Bramberger
中科院分区：
文献类型：
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作者：
K. Bossert;S. Vadas;L. Hoffmann;E. Becker;V. Harvey;M. Bramberger
2016 年 1 月 12 日期间的观测揭示了欧洲上空发生的一系列重大重力波 (GW) 活动事件。对大气红外探测器 (AIRS) 得出的温度进行分析，可以深入了解这些引力波的来源，并包括对平流层极夜急流 (PNJ) 产生的引力波的新观测。在此期间，法国阿尔卑斯山和喀尔巴阡山脉上空也存在山浪，法国阿尔卑斯山上空的最大温度扰动 T' 高达 27 K。对山波的进一步调查表明，它们在平流层中的存在不仅取决于平流层条件，还取决于对流层和地表的强风。 PNJ 在平流层产生的引力波的最大 T' 为 7 K。这些观测结果表明，在动态活跃期间存在多个引力波源，并暗示 PNJ 在对流层产生的引力波的垂直传播和 PNJ 本身产生的引力波中的作用。
Observations during 12 January 2016 revealed a series of events of significant gravity wave (GW) activity over Europe. Analysis of derived temperatures from the Atmospheric InfraRed Sounder (AIRS) provides insight into the sources of these GWs, and include a new observation of stratosphere polar night jet (PNJ) generated GWs. Mountain waves were present during this time as well over the French Alps and the Carpathian Mountains and had maximum temperature perturbations, T′, as large as 27 K over the French Alps. Further investigation of the mountain waves that demonstrated their presence in the stratosphere was determined not only by stratospheric conditions but also by strong winds in the troposphere and at the surface. GWs generated in the stratosphere by the PNJ had maximum T′ of 7 K. These observations demonstrate multiple sources of GWs during a dynamically active period and implicate the role of the PNJ in both the vertical propagation of GWs generated in the troposphere and the generation of GWs from the PNJ itself.