We conduct a numerical simulation on the summer time Na density behavior in the mid-latitude E region that is modulated by tidal and gravity waves. The results reveal that large amplitude atmospheric waves change the Na variation in E region considerably. The vertical wind component of the large amplitude tidal wave can extend the Na layer above 120 km.

Tao Yuan, Utah State University, Physics, Logan, UT, United States, Xuguang Cai, Utah State University, Logan, UT, United States and J Vincent Eccles, Center for Atmospheric and Space Sciences, Logan, UT, United States