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TEC MEASUREMENT AT ILORIN AN EQUATORIAL STATION
J.O. Adeniyi1&3, O.A. Oladipo1&3, P. H. Doherty2, S.M. Radicella3,
I.A. Adimula1, and A.O. Olawepo 1
1Physics Department, University of Ilorin, P.M.B. 1515 Ilorin Nigeria
2Institute for Scientific Research Boston College, USA
3The Abdus Salam I. C. T. P., Aeronomy and Radio Propagation Laboratory, Trieste, Italy
jadeniyi@unilorin.edu.ng jadeniyi@ictp.it
GPS INSTALATION AT ILORIN, NIGERIA
THE ILORIN RESEARCH GROUP
LOCATIONGeog. Latitude =
8.47 °NGeog. Longitude =
4.68 °EDip = 4.1 °S
SOLSTICES
0 3 6 9 12 15 18 21 240
5
10
15
20
25
30
June 2008
UT /Hr
VTEC
/ TE
CU
0 3 6 9 12 15 18 21 240
5
10
15
20
25
30
December 2008
UT / Hr
VTEC
/ TE
CU
EQUINOXES
0 3 6 9 12 15 18 21 240
5
10
15
20
25
30
September 2008
UT / Hr
VTEC
/ TE
CU
0 3 6 9 12 15 18 21 240
5
10
15
20
25
30
March 2009
UT / Hr
VTEC
/ TE
CU
COMPARISONS WITH IRI MODEL
00.25
0.5
0.75
11.25
1.5
1.75
22.25
2.5
2.75
33.25
3.5
3.75
44.25
4.5
4.75
55.25
5.5
5.75
66.25
6.5
6.75
77.25
7.5
7.75
88.25
8.5
8.75
99.25
9.5
9.75
1010.25
10.5
10.75
1111.25
11.5
11.75
1212.25
12.5
12.75
1313.25
13.5
13.75
1414.25
14.5
14.75
1515.25
15.5
15.75
1616.25
16.5
16.75
1717.25
17.5
17.75
1818.25
18.5
18.75
1919.25
19.5
19.75
2020.25
20.5
20.75
2121.25
21.5
21.75
2222.25
22.5
22.75
2323.25
23.5
23.75
0
5
10
15
20
25
30
Monthly Average Observed Values
Dec-08 Sep-08 Jun-08 Mar-09
UT / Hr
VTEC
/ TE
CU
00.25
0.5
0.75
11.25
1.5
1.75
22.25
2.5
2.75
33.25
3.5
3.75
44.25
4.5
4.75
55.25
5.5
5.75
66.25
6.5
6.75
77.25
7.5
7.75
88.25
8.5
8.75
99.25
9.5
9.75
1010.25
10.5
10.75
1111.25
11.5
11.75
1212.25
12.5
12.75
1313.25
13.5
13.75
1414.25
14.5
14.75
1515.25
15.5
15.75
1616.25
16.5
16.75
1717.25
17.5
17.75
1818.25
18.5
18.75
1919.25
19.5
19.75
2020.25
20.5
20.75
2121.25
21.5
21.75
2222.25
22.5
22.75
2323.25
23.5
23.75
0
5
10
15
20
25
30
IRI-2007 prediction
Dec-08 Sep-08 Jun-08Mar-09
UT / Hr
VTEC
/ TE
CU
COMPARISONS WITH IRI (SOLSTICES)
00.25
0.5
0.75
11.25
1.5
1.75
22.25
2.5
2.75
33.25
3.5
3.75
44.25
4.5
4.75
55.25
5.5
5.75
66.25
6.5
6.75
77.25
7.5
7.75
88.25
8.5
8.75
99.25
9.5
9.75
1010.25
10.5
10.75
1111.25
11.5
11.75
1212.25
12.5
12.75
1313.25
13.5
13.75
1414.25
14.5
14.75
1515.25
15.5
15.75
1616.25
16.5
16.75
1717.25
17.5
17.75
1818.25
18.5
18.75
1919.25
19.5
19.75
2020.25
20.5
20.75
2121.25
21.5
21.75
2222.25
22.5
22.75
2323.25
23.5
23.75
0
5
10
15
20
25
30
June 2008
OBSIRI-2007
UT / Hr
VTEC
/ TE
CU
0 3 6 9 12 15 18 21 240
5
10
15
20
25
30
December 2008
OBS IRI
UT / Hr
VTEC
/ TE
CU
COMPARISONS WITH IRI (EQUINOXES)
00.25
0.5
0.750000000000001
11.25
1.5
1.75
22.25
2.5
2.75
33.25
3.5
3.75
44.25
4.5
4.75
55.25
5.5
5.75
66.25
6.5
6.75
77.25
7.5
7.75
88.25
8.5
8.75
99.25
9.5
9.75
1010.25
10.5
10.75
1111.25
11.5
11.75
1212.25
12.5
12.75
1313.25
13.5
13.75
1414.25
14.5
14.75
1515.25
15.5
15.75
1616.25
16.5
16.75
1717.25
17.5
17.75
1818.25
18.5
18.75
1919.25
19.5
19.75
2020.25
20.5
20.75
2121.25
21.5
21.75
2222.25
22.5
22.75
2323.25
23.5
23.75
0
5
10
15
20
25
30
September 2008
OBS IRI-2007
UT / Hr
VTEC
/ TE
CU
00.25
0.5
0.75
11.25
1.5
1.75
22.25
2.5
2.75
33.25
3.5
3.75
44.25
4.5
4.75
55.25
5.5
5.75
66.25
6.5
6.75
77.25
7.5
7.75
88.25
8.5
8.75
99.25
9.5
9.75
1010.25
10.5
10.75
1111.25
11.5
11.75
1212.25
12.5
12.75
1313.25
13.5
13.75
1414.25
14.5
14.75
1515.25
15.5
15.75
1616.25
16.5
16.75
1717.25
17.5
17.75
1818.25
18.5
18.75
1919.25
19.5
19.75
2020.25
20.5
20.75
2121.25
21.5
21.75
2222.25
22.5
22.75
2323.25
23.5
23.75
24
0
5
10
15
20
25
30
35
March 2009
OBS IRI-2007
UT / Hr
VTEC
/ TE
CU
FUTURE PLANSCINTILATION STUDIES
GEOMAGNETIC STORM EFFECTS
EQUATORIAL IRREGULARITIES -JOINTLY WITH OTHER NIGERIAN
STATIONS -USING DATA FROM OTHER AFRICAN
STATIONS
THANK YOU FOR YOUR ATTENTION