Analysis of the correlation between horizontal wind and 11-year solar activity over Langfang, China

被引：5
|
作者：
Cai, Bing [1 ,2 ]
Xu, QingChen [1 ]
Hu, Xiong [1 ]
Cheng, Xuan [1 ]
Yang, JunFeng [1 ]
Li, Wen [1 ]
机构：
[1] Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Sci & Technol Environm Space Situat Aware, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
来源：
EARTH AND PLANETARY PHYSICS | 2021年 / 5卷 / 03期
关键词：
MF radar; MLT; horizontal wind; solar cycle; MIDDLE ATMOSPHERE; CYCLE DEPENDENCE; MESOPAUSE REGION; MEAN WINDS; MESOSPHERE; 52-DEGREES-N; RADAR; FIELD;
D O I：
10.26464/epp2021029
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
In this study, long term observations of medium frequency (MF) radar at Langfang site (39.4 degrees N, 116.7 degrees E) from 2009 to 2020 have been used to analyze the dependence of the 11-year solar cycle on horizontal winds in the local mesosphere and lower thermosphere (MLT). The results show that the zonal wind is positively correlated with solar activity during spring at 80-84 km, and during summer at 80-82 km; the meridional wind is positively correlated with solar activity during spring at 84-88 km and during summer at 84-90 km. In contrast, the results show no correlation between the horizontal wind and solar activity in autumn and winter. We attempt to explain the correlations in terms of the changes in stratospheric temperature and the net flux of gravity waves during solar activities. In addition, annual and semiannual oscillations of the zonal/meridional wind were found by using the least squares fitting method on daily horizontal winds, which show negative correlations with solar activity at heights of 80-90 km.
引用
收藏
页码：270 / 279
页数：10
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