气候变化领域集成服务门户(CCPortal): A Statistical Analysis of the Energy Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic

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DOI	10.1029/2020JD032745
	A Statistical Analysis of the Energy Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic
	Kohma M.; Sato K.; Nishimura K.; Tsutsumi M.; Sato T.
发表日期	2020
ISSN	2169897X
卷号	125 期号:16
英文摘要	The radar volume reflectivity and turbulent kinetic energy dissipation rate in the Antarctic mesosphere were estimated from the polar mesosphere winter echoes (PMWE) recorded using a vertical beam of the PANSY radar, a Mesosphere-Stratosphere-Troposphere radar at Syowa Station (69°S, 40°E), over a period of 4 years. The observed radar volume reflectivity exhibits a lognormal distribution in the range of 2 × 10−18 to 5 × 10−15 m−1 for a height region of 55–82 km. The turbulent energy dissipation rate estimated from the spectral widths of the PMWE ranges from 10−4 to 100 m2 s−3. From monthly histograms of the turbulent energy dissipation rate for a fixed solar zenith angle (SZA) and height, it was found that the summer-to-winter transition of the turbulent energy dissipation rate occurs in March, while the winter-to-summer transition occurs in September. This seasonal variation agrees well with that of gravity wave activity, suggesting that the turbulence in the mesosphere is likely caused by gravity wave breaking. ©2020. The Authors.
英文关键词	gravity wave; PMWE; turbulence; VHF radar
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185829
作者单位	Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan; National Institute of Polar Research and The Graduate University for Advanced Studies (SOKENDAI), Tokyo, Japan; Institute for Liberal Arts and Sciences, Kyoto University, Kyoto, Japan
推荐引用方式 GB/T 7714	Kohma M.,Sato K.,Nishimura K.,et al. A Statistical Analysis of the Energy Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic[J],2020,125(16).
APA	Kohma M.,Sato K.,Nishimura K.,Tsutsumi M.,&Sato T..(2020).A Statistical Analysis of the Energy Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic.Journal of Geophysical Research: Atmospheres,125(16).
MLA	Kohma M.,et al."A Statistical Analysis of the Energy Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic".Journal of Geophysical Research: Atmospheres 125.16(2020).