SEASONAL-VARIATIONS OF EQUATORIAL NIGHTTIME THERMOSPHERIC MERIDIONAL WINDS

被引：15
|
作者：
HARI, SS
MURTHY, BVK
机构：
[1] Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum
来源：
JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS | 1995年 / 57卷 / 11期
关键词：
D O I：
10.1016/0021-9169(95)00007-O
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Using h'F data at two equatorial stations, night-time equatorial thermospheric meridional winds have been deduced for a period of two years to study their seasonal characteristics. It has been found that the thermospheric wind shows trans-equatorial flow from summer to winter hemisphere. During equinoxes the flow is mainly equatorward with a reversal to poleward direction around midnight hours. The abatement and reversal of equatorward wind which is weaker in summer compared to equinoxes is attributed to Midnight Temperature Maximum (MTM). The results of the present investigation are compared with those at other equatorial stations and also with the empirical model of Hedin et al. (1991).
引用
收藏
页码：1241 / 1246
页数：6
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