Vertical TEC variations and model during low solar activity at a low latitude station,Xiamen |
| |
Authors: | Guoqi Liu Wengeng Huang Hua Shen Jiancun Gong |
| |
Affiliation: | Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, PR China |
| |
Abstract: | GPS-derived vertical TEC recorded at Xiamen (24.5°N, 118.1°E, geomagnetic latitude 13.2°N), China, during year 2006 is analyzed for the first time and compared to that predicted by ionosphere model SPIM recommend by ISO. A manifest seasonal anomaly is found with the high value during equinoctial season and low value during summer and winter season. Relative standard deviation for VTEC shows high value at around midnight and before sunrise. The correlation analysis exhibits that the variation of VTEC has a very weak relation with geomagnetic and solar activities (Dst, AP, SSN and F10.7). Comparative results reveal that the SPIM overestimates the observed VTEC at most of the time. |
| |
Keywords: | Equatorial ionospheric anomaly Vertical TEC Seasonal variation SPIM |
本文献已被 ScienceDirect 等数据库收录! |
|