- Open Access
A comparative study of the bottomside profile parameters over Wuhan with IRI-2001 for 1999–2004
Earth, Planets and Space volume 58, pages601–605(2006)
The diurnal, seasonal, and solar activity variations of the bottomside ionospheric profile parameters B0 and B1 are studied using electron density profiles measured over Wuhan (30.4°N, 114.4°E) of China with a DGS- 256 Digisonde during 1999–2004. Comparisons are made with the International Reference Ionosphere model (IRI-2001) using both the standard option (B0-Tab and B1-Tab) and the Gulyaeva’s option (B0-Gul and B1- Gul). The results show that: (1) observed B0 has distinct diurnal and seasonal variations, while observed B1 changes little with season. The value of B0 is larger in summer than that in equinox and winter, especially for daytime. In winter and equinox, B0 also presents morning and afternoon collapses as reported by Lei et al. (2004). (2) B0 increases about 18.6 km from low solar activity (LSA) to high solar activity (HSA). B1 in HSA is smaller than that in LSA before 10:00 LT and with an opposite tendency during the rest time. (3) Observed B0 is in better agreement with B0-Gul than with B0-Tab, though the B0-Gul overestimates during 09:00 to 17:00 LT in equinox and summer. B0-Tab is 12–20 km larger than the observations over Wuhan almost all the time.
Meanwhile, B1-Tab is in good agreement with the observations.
Bilitza, D., International Reference Ionosphere 2000, Radio Sci., 36(2), 261–275, 2001.
Bilitza, D., S. Radicella, B. Reinish, J. Adeniyi, M. Mosert de Gonzalez, S. Zhang, and O. Obrou, New B0 and B1 models for IRI, Adv. Space Res., 25(1), 86–96, 2000.
Gulyaeva, T. L., Implementation of a new characteristic parameter into the IRI sub-peak electron density profile, Adv. Space Res., 2(10), 191–194, 1982.
Huang, X. and B. W. Reinisch, Vertical electron density profiles from the digisonde network, Adv. Space Res., 18(6), 121–129, 1996.
Lei, J., L. Liu, W. Wan, S.-R. Zhang, and J. M. Holt, A statistical study of ionospheric profile parameters derived from Millstone Hill incoherent scatter radar measurements, Geophys. Res. Lett., 31, L14804, doi:10.1029/2004GL020578, 2004.
Liu, L., W. Wan, X. Luan, B. Ning, and J. Lei, Solar activity dependence of the effective winds derived from ionospheric data at Wuhan, Adv. Space. Res., 32, 1719–1724, 2003.
Liu, L., W. Wan, C. C. Lee, B. Ning, and J. Y. Liu, The low latitude ionospheric effects of the April 2000 magnetic storm near the longitude 120°E, Earth Planets Space, 56, 607–612, 2004.
Mahajan, K. K., R. Kohli, N. K. Sethi, and V. K. Pandey, Variability of the F-region parameter h0.5, Adv. Space Res., 15(1), 51–60, 1995.
Ramakrishnan, Y. V. and K. Rawer, Electron density reference profile in the lower ionosphere, Adv. Space Res., 5(7), 29–34, 1985.
Reinish, B. and X. Huang, Redefining the IRI F1 layer profile, Adv Space Res., 25(1), 81–88, 1999.
Scotto, C., M. Mosert de Gonzalez, S. Radicella, and B. Zolesi, On the prediction of the F1 ledge occurrence and critical frequency, Adv. Space Res., 20(9), 1773–1776, 1997.
Scotto, C., Radicella, and B. Zolesi, An improved probability function to predict the F1 layer occurrence and critical frequency, Radio sci., 33, 1763–1765, 1998.
Sethi, N. K. and K. K. Mahajan, The bottomside parameters B0, B1 obtained from incoherent scatter measurements during a solar maximum and their comparisons with the IRI-2001 model, Ann. Geophys., 20(6), 817–822, 2002.
Sethi, N. K. and V. K. Pandey, Comparative study of electron density from incoherent scatter measurements at Arecibo with the IRI-95 model during solar maximum, Ann. Geophys., 20, 817–822, 2004.
Zhang, M. L., J. K. Shi, X. Wang, S. Z. Wu, and S. R. Zhang, Comparative study of ionospheric characteristic parameters obtained by DPS-4 digisonde with IRI-2000 for low latitude station in china, Adv. Space Res., 33, 869–873, 2004.
Zhang, S.-R. and X.-Y. Huang, Variations of bottomside electron density profile parameters obtained from observations at Wuchang, China, Adv. Space Res., 22(6), 749–752, 1998.
About this article
Cite this article
Chen, H., Liu, L., Wan, W. et al. A comparative study of the bottomside profile parameters over Wuhan with IRI-2001 for 1999–2004. Earth Planet Sp 58, 601–605 (2006). https://doi.org/10.1186/BF03351957
- Low latitude ionosphere
- DGS-256 Digisonde
- IRI model
- modeling and forecasting