气候变化领域集成服务门户(CCPortal): Statistical Study of the Midlatitude Mesospheric Vertical Winds Observed by the Wuhan and Beijing MST Radars in China

CCPortal

DOI	10.1029/2020JD032776
	Statistical Study of the Midlatitude Mesospheric Vertical Winds Observed by the Wuhan and Beijing MST Radars in China
	Zhang W.; Chen G.; Zhang S.; Gong W.; Chen F.; He Z.; Huang K.; Wang Z.; Li Y.
发表日期	2020
ISSN	2169897X
卷号	125 期号:18
英文摘要	Based on the long-term observations of the Wuhan and Beijing Mesosphere-Stratosphere-Troposphere (MST) radars, the statistic characteristics of the mesospheric vertical winds at midlatitudes are investigated for the first time. The vertical wind data come from the Wuhan MST radar (29.51°N, 114.13°E) during 2012–2017 and from the Beijing MST radar (39.75°N, 116.96°E) during 2012–2014. The subdaily, seasonal, and annual variations of the mesospheric vertical winds at Wuhan and Beijing are presented. No obvious subdaily and seasonal variations are found and the annual variations of the mean vertical winds are downward in most of time. The mean vertical winds at Wuhan become smaller in summer and turn to upward at some heights, while those of Beijing only become smaller in summer. The difference of summer vertical winds over Wuhan and Beijing is closely related to the gravity wave activity. The Wuhan MST radar is located to the east side of the Qinghai-Tibet plateau and also in the East Asian monsoon region, thus the mesospheric winds over Wuhan may experience more influence of gravity waves compared with those over Beijing. The possible bias sources in the vertical wind measurement of the two MST radars are carefully analyzed and the presented wind velocities are proved to be credible. The measured velocity magnitude is similar to other Very High Frequency radar observations, but much larger than that of the WACCM simulation. The Stokes drift, multicellular circulation structures, the wave influence on the radar echoes are raised as the potential sources for this discrepancy. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	circulation; gravity wave; mesosphere; MST radar; vertical wind
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/185773
作者单位	School of Electronic Information, Wuhan University, Wuhan, China; School of Information Engineering, Nanchang Hangkong University, Nanchang, China
推荐引用方式 GB/T 7714	Zhang W.,Chen G.,Zhang S.,et al. Statistical Study of the Midlatitude Mesospheric Vertical Winds Observed by the Wuhan and Beijing MST Radars in China[J],2020,125(18).
APA	Zhang W..,Chen G..,Zhang S..,Gong W..,Chen F..,...&Li Y..(2020).Statistical Study of the Midlatitude Mesospheric Vertical Winds Observed by the Wuhan and Beijing MST Radars in China.Journal of Geophysical Research: Atmospheres,125(18).
MLA	Zhang W.,et al."Statistical Study of the Midlatitude Mesospheric Vertical Winds Observed by the Wuhan and Beijing MST Radars in China".Journal of Geophysical Research: Atmospheres 125.18(2020).