NSSC OpenIR  > 空间科学部
Alternative TitleAbnormal Echoes in Lower Stratosphere Observed by Wuhan MST Radar during a Cold front Event
潘震豪1; 周晓明1; 陈罡1; 燕春晓2; 陈飞龙1; 王莹1
Source Publication空间科学学报
Keyword角谱 MST雷达 风剪切 KH不稳定性 内重力波
Other AbstractWuhan Mesosphere-Stratosphere-Troposphere (MST) radar is a radio atmosphere detection radar deployed by the Chinese Meridian Project. As the frequency is in VHF band, the echoes are sensitive in all their aspects. Such echo characteristics are much more obvious in the Upper Troposphere and Lower Stratosphere (UTLS), which provides a practical approach to investigate the atmosphere dynamics. Observations of echo characteristic during a cold front are obtained by Wuhan MST radar in mid-latitude in April 2016. The experiment results show that the typical feature of the echo aspect sensitivity is significantly changed compared with that of normal days. Reasons of the echo anomaly are studied by analyzing echo characteristics variations, wind field spatial distributions, turbulence generation mechanisms and Inertia Gravity Waves (IGWs) effects. The result demonstrates that the dissipating (or even breaking) of upward IGWs coming from convection system might feed the long-time persistence of Kelvin-Helmholtz (K-H) instability, which further tilts the horizontal reflection layer and results in the intense turbulence and the echo enhancement.
Indexed ByCSCD
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Document Type期刊论文
Affiliation1.武汉大学电子信息学院 武汉 430072;
2.中国科学院国家空间科学中心空间天气国家重点实验室 北京 100190
Recommended Citation
GB/T 7714
潘震豪,周晓明,陈罡,等. 冷锋期间武汉mst雷达低平流层回波异常现象[J]. 空间科学学报,2018,38(4):492-501.
APA 潘震豪,周晓明,陈罡,燕春晓,陈飞龙,&王莹.(2018).冷锋期间武汉mst雷达低平流层回波异常现象.空间科学学报,38(4),492-501.
MLA 潘震豪,et al."冷锋期间武汉mst雷达低平流层回波异常现象".空间科学学报 38.4(2018):492-501.
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