Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-14937-2017 |
First tomographic observations of gravity waves by the infrared limb imager GLORIA | |
Krisch, Isabell1; Preusse, Peter1; Ungermann, Joern1; Doernbrack, Andreas2; Eckermann, Stephen D.3; Ern, Manfred1; Friedl-Vallon, Felix4; Kaufmann, Martin1; Oelhaf, Hermann4; Rapp, Markus2,5; Strube, Cornelia1; Riese, Martin1,6 | |
2017-12-18 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA |
英文摘要 | Atmospheric gravity waves are a major cause of uncertainty in atmosphere general circulation models. This uncertainty affects regional climate projections and seasonal weather predictions. Improving the representation of gravity waves in general circulation models is therefore of primary interest. In this regard, measurements providing an accurate 3-D characterization of gravity waves are needed. Using the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA), the first airborne implementation of a novel infrared limb imaging technique, a gravity wave event over Iceland was observed. An air volume disturbed by this gravity wave was investigated from different angles by encircling the volume with a closed flight pattern. Using a tomographic retrieval approach, the measurements of this air mass at different angles allowed for a 3-D reconstruction of the temperature and trace gas structure. The temperature measurements were used to derive gravity wave amplitudes, 3-D wave vectors, and direction-resolved momentum fluxes. These parameters facilitated the backtracing of the waves to their sources on the southern coast of Iceland. Two wave packets are distinguished, one stemming from the main mountain ridge in the south of Iceland and the other from the smaller mountains in the north. The total area-integrated fluxes of these two wave packets are determined. Forward ray tracing reveals that the waves propagate laterally more than 2000 km away from their source region. A comparison of a 3-D ray-tracing version to solely column-based propagation showed that lateral propagation can help the waves to avoid critical layers and propagate to higher altitudes. Thus, the implementation of oblique gravity wave propagation into general circulation models may improve their predictive skills. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418198000004 |
WOS关键词 | TRANSFORM SPECTROMETER GLORIA ; STRATOSPHERIC BALLOON FLIGHTS ; MOMENTUM FLUX ; MIDDLE ATMOSPHERE ; GENERAL-CIRCULATION ; FOURIER-TRANSFORM ; CLIMATE MODELS ; RADIOSONDE DATA ; PHASE SPEEDS ; PARAMETERIZATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16149 |
专题 | 地球科学 |
作者单位 | 1.Forschungszentrum Julich, Inst Energy & Climate Res, Stratosphere IEK 7, Julich, Germany; 2.Deutsch Zentrum Luft & Raumfahrt, Inst Phys Atmosphare, Oberpfaffenhofen, Germany; 3.EO Hulburt Ctr Space Res, Naval Res Lab, Washington, DC USA; 4.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Karlsruhe, Germany; 5.Ludwig Maximilians Univ Munchen, Meteorol Inst Munchen, Karlsruhe, Germany; 6.Berg Univ Wuppertal, Inst Atmospharen & Umweltforsch, Wuppertal, Germany |
推荐引用方式 GB/T 7714 | Krisch, Isabell,Preusse, Peter,Ungermann, Joern,et al. First tomographic observations of gravity waves by the infrared limb imager GLORIA[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(24). |
APA | Krisch, Isabell.,Preusse, Peter.,Ungermann, Joern.,Doernbrack, Andreas.,Eckermann, Stephen D..,...&Riese, Martin.(2017).First tomographic observations of gravity waves by the infrared limb imager GLORIA.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(24). |
MLA | Krisch, Isabell,et al."First tomographic observations of gravity waves by the infrared limb imager GLORIA".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.24(2017). |
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