Ionospheric TEC Variability at High Latitude Conjugate Stations 
 
Sumazly Sulaiman, Mohd Alauddin Mohd.Ali, Baharudin Yatim, Norbahiah Misran 
 
This paper analyzed the polar ionospheric TEC variability for the year 2003 
based on GPS measurements at conjugate stations. Our observations are based on 
ground measurements at Scott Base (SBA) Antarctica station (GC: 77.85°S, 
166.76°E, CGM: 79.94°S, 327.8.23°E) and Resolute Cornwallis Island (RESO) Arctic 
station (GC: 74.69°N, 265.12°E, CGM: 83.17°N, 320.95°E) measured during the 
declining phase of the 23rd solar cycle. The statistical data are based on daily 
hourly data and the TEC variability is determined month by month. This work 
reported the GPS-TEC diurnal temporal variation and their corresponding monthly 
medians at conjugate vantage points.