Field of Competence


News



IONOSPHERIC HYSTERESIS DURING SOLAR CYCLE 23 FROM GLOBAL IONOSPHERIC MAP
01 Dec 2013 • Read : 2339 x ,

Buldan Muslim

The models used for long-term ionosphere prediction have not considered ionospheric hysteresis. Some researchers have provided contradictory conclusions of the ionospheric hysteresis effect on the ionospheric modeling. Ionospheric total electron content (TEC) data from the global ionosphere maps (GIM) have been used to study the spatial and diurnal variability of the ionospheric hysteresis during solar cycle 23. The magnitude of the ionospheric hysteresis is estimated as the difference between the average TEC during decline and rising phase of the solar cycle. The ionospheric hysteresis has similar spatial variability of ionospheric equatorial ionization anomaly, where the greatest value occurs in the equatorial ionization anomaly crest region, and there are latitudinal and longitudinal asymmetries. The hysteresis of equatorial and low latitude ionosphere have a systematic pattern of events both spatially and temporally making it possible to incorporate the hysteresis effects in the long-term model of the ionosphere. The hysteresis effect in the low latitude ionosphere may cause errors of a linear model of the ionosphere up to 49 %. Therefore, in the low latitude ionosphere modeling, the ionospheric hysteresis should be considered by using different formulations for declining and rising phase of the solar cycle.


Files Download : 1949-2199-1-SM.pdf





Related Posts
No Related posts

Kontak kami :
LAPAN
Jl. Pemuda Persil No.1 Jakarta 13220 Telepon (021) 4892802 Fax. 4892815



© 2017 - LEMBAGA PENERBANGAN DAN ANTARIKSA NASIONAL