Xiong Jiangang
Institute:
INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES.
Beijing, China
THE QUASI-6.5-DAY DISTURBANCES OF TEC AND THEIR RELATIONSHIP TO THE 6.5-DAY PLANETARY WAVES IN THE MIDDLE ATMOSPHERE
Authors: Jiangang Xiong,Weixin Wan,Libo Liu,
1 Institute of Geology and Geophysics, Chinese Academy of Sciences
The data of igsg-TEC and UKMO data are used to analyze the large scale disturbances in the ionosphere and middle atmosphere from 2002 to 2009. In most years, the 6.5-day disturbance can be found in the ionosphere and middle atmosphere with wavenumber one around spring and autumn equinoxes. The amplitudes of the distubances in ionosphere and middle atmosphere are highly related. The strongest disturbances are all in 2004. The vertical drift of plasma also have similiar variations around two equinoxes. The results show the quasi-6.5-day disturbances in the ionosphere maybe resulted from the quasi-6.5-day waves in the middle atmosphere through interactions between atmosphere and plasma electric fields.
planetary waves, ionosphere, middle atmosphere