Parameterization of Strong Stratospheric Inertia Gravity Waves Forced by Poleward-Breaking Rossby Waves
Parameterization of Strong Stratospheric Inertia Gravity Waves Forced by Poleward-Breaking Rossby Waves
复制标题
极破罗斯贝波驱动的强平流层惯性重力波的参数化
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
D. Peters
中科院分区：
文献类型：
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作者：
C. Zülicke;D. Peters
摘要 研究了向极地断裂的罗斯贝波与平流层惯性重力波之间的联系。通过对基于 ECMWF 分析的 Ertel 位涡图进行目视检查，发现 1999-2003 年冬季约 40% 的时间在北欧上空发生了罗斯比破浪事件。他们中的大多数正在向下游极地冲去。 1999 年至 2002 年冬季，在德国库隆斯博恩（北纬 54°，东经 12°）总共进行了 10 次实地考察。它们与此类事件有关，可以被视为极向破断罗斯比波的代表。惯性重力波特性是通过无线电探空仪观测来诊断的。它们似乎比德国北部低地的气候平均值更浅、更慢、更强。因此，罗斯贝波破碎事件与平流层强烈的惯性重力波活动有关。提出了一种新颖的惯性重力波产生和传播参数化方法。平流层惯性重力波作用...
Abstract The link between poleward-breaking Rossby waves and stratospheric inertia–gravity waves is examined. With a visual inspection of Ertel’s potential vorticity maps based on ECMWF analyses it was found that Rossby wave–breaking events occurred over northern Europe in about 40% of the winter days in 1999–2003. The majority of them were breaking poleward downstream. A total of 10 field campaigns were performed in the winters of 1999–2002 at Kuhlungsborn, Germany (54°N, 12°E). They are related to such events and can be considered as representative for poleward-breaking Rossby waves. Inertia–gravity wave properties are diagnosed from radiosonde observations. They appeared to be shallower, slower, and stronger than the climatological mean for the north German lowlands. Hence, Rossby wave–breaking events are linked with strong stratospheric inertia–gravity wave activity. A novel parameterization of inertia–gravity wave generation and propagation is proposed. The stratospheric inertia–gravity wave action i...