Compare of polar ionosphere modification effect with different heating modes

The measured data in polar winter ionosphere heating experiment carried out at Tromso on 24 November 2011 are analyzed here to find out whether the heating modes of O-mode and X-mode have different influences on electron temperature and electron density and what the influences are. It shows that the enhancement of electron temperature under O-mode is more than that under X-mode. Comparing with the O-mode case, the electron density enhance at higher altitudes under X-mode. The results show that the electron temperature can enhance up to 277% maximum and the electron density can enhance up to 53.7% maximum under O-mode, while the data are 71.8% and 54.8% separately under the X-mode.