Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-371-2018 |
Temporal variability of tidal and gravity waves during a record long 10-day continuous lidar sounding | |
Baumgarten, Kathrin; Gerding, Michael; Baumgarten, Gerd; Luebken, Franz-Josef | |
2018-01-12 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:1页码:371-384 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Gravity waves (GWs) as well as solar tides are a key driving mechanism for the circulation in the Earth's atmosphere. The propagation of gravity waves is strongly affected by tidal waves as they modulate the mean background wind field and vice versa, which is not yet fully understood and not adequately implemented in many circulation models. The daylight-capable Rayleigh-Mie-Raman (RMR) lidar at Kuhlungsborn (54 degrees N, 12 degrees E) typically provides temperature data to investigate both wave phenomena during one full day or several consecutive days in the middle atmosphere between 30 and 75 km altitude. Outstanding weather conditions in May 2016 allowed for an unprecedented 10-day continuous lidar measurement, which shows a large variability of gravity waves and tides on timescales of days. Using a one-dimensional spectral filtering technique, gravity and tidal waves are separated according to their specific periods or vertical wavelengths, and their temporal evolution is studied. During the measurement period a strong 24 h wave occurs only between 40 and 60 km and vanishes after a few days. The disappearance is related to an enhancement of gravity waves with periods of 4-8 h. Wind data provided by ECMWF are used to analyze the meteorological situation at our site. The local wind structure changes during the observation period, which leads to different propagation conditions for gravity waves in the last days of the measurement period and therefore a strong GW activity. The analysis indicates a further change in wave-wave interaction resulting in a minimum of the 24 h tide. The observed variability of tides and gravity waves on timescales of a few days clearly demonstrates the importance of continuous measurements with high temporal and spatial resolution to detect interaction phenomena, which can help to improve parametrization schemes of GWs in general circulation models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419987100003 |
WOS关键词 | MIDDLE ATMOSPHERE ; DIURNAL-VARIATIONS ; MESOPAUSE REGION ; CLIMATE MODELS ; MOMENTUM FLUX ; SOLAR TIDES ; PART II ; TEMPERATURE ; THERMOSPHERE ; MESOSPHERE |
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/19532 |
专题 | 地球科学 |
作者单位 | Univ Rostock, Leibniz Inst Atmospher Phys, Kuhlungsborn, Germany |
推荐引用方式 GB/T 7714 | Baumgarten, Kathrin,Gerding, Michael,Baumgarten, Gerd,et al. Temporal variability of tidal and gravity waves during a record long 10-day continuous lidar sounding[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(1):371-384. |
APA | Baumgarten, Kathrin,Gerding, Michael,Baumgarten, Gerd,&Luebken, Franz-Josef.(2018).Temporal variability of tidal and gravity waves during a record long 10-day continuous lidar sounding.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(1),371-384. |
MLA | Baumgarten, Kathrin,et al."Temporal variability of tidal and gravity waves during a record long 10-day continuous lidar sounding".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.1(2018):371-384. |
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