Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/3855| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Pietrella, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.contributor.authorall | Perrone, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.date.accessioned | 2008-05-15T07:40:24Z | en |
| dc.date.available | 2008-05-15T07:40:24Z | en |
| dc.date.issued | 2008 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/3855 | en |
| dc.description.abstract | An ionospheric forecasting empirical local model over Rome (IFELMOR) has been developed to predict the state of the critical frequency of the F2 layer (foF2) during geomagnetic storms and disturbed ionospheric conditions. Hourly measurements of foF2 obtained at the Rome observatory, hourly quiet-time values of foF2 (foF2QT), and the hourly time-weighted accumulation series derived from the geomagnetic planetary index ap (ap(tau)), were considered during the period January 1976–December 2003. Under the assumption that the ionospheric disturbance index log(foF2/foF2QT) is correlated to the integrated geomagnetic index ap(tau), statistically significant regression coefficients are obtained for different months and for different ranges of ap(tau) and used as input to calculate the short-term ionospheric forecasting of foF2. The empirical storm-time ionospheric correction model (STORM) was used to make comparisons with the IFELMOR model. A few comparisons between STORM’s performance, IFELMOR’s performance, the median measurements and the foF2QT values, were made for significant geomagnetic storm events (ap>150) occurring from 2000 to 2003. The results provided by IFELMOR are satisfactory, in particular, for periods characterized by high geomagnetic activity and very disturbed ionospheric conditions. | en |
| dc.language.iso | English | en |
| dc.publisher.name | EGU - Copernicus Publications | en |
| dc.relation.ispartof | Annales Geophysicae | en |
| dc.relation.ispartofseries | / 26 (2008) | en |
| dc.subject | Ionosphere | en |
| dc.subject | Ionosphere-Magnetosphere interactions | en |
| dc.subject | Ionospheric disturbances | en |
| dc.subject | Modeling and forecasting | en |
| dc.title | A local ionospheric model for forecasting the critical frequency of the F2 layer during disturbed geomagnetic and ionospheric conditions | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 323-334 | en |
| dc.identifier.URL | http://www.ann-geophys.net/26/323/2008/ | en |
| dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.03. Forecasts | en |
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D. and Matsushita, S.: Thermospheric response to a magnetic substorm, J. Geophys. Res., 80, 2839–2850, 1975. Rishbeth, H., Fuller-Rowell, T. J., and Rees, D.: Diffusive equilibrium and vertical motion in the thermosphere during a severe magnetic storm: a computational study, Planet. Space Sci., 35, 1157–1165, 1987. Roble, R. G., Richmond, A. D., Oliver, W. L., and Harper, R. M.: Ionospheric effects of the gravity wave launched by the September 18, 1974, Sudden Commencement, J. Geophys. Res., 83, 999–1009, 1978. Stewart, F. G.: ICEPAC-Technical Manual, available for download at http://www.greg-hand.com/manuals/icepac tech manual. pdf, undated. Testud, J.: Gravity waves generated during magnetic substorm, J. Atmos. Terr. Sci., 32, 1793–1805, 1970. Titheridge, J. E.: Non periodic irregularities in the ionosphere, J. Geophys. Res., 76, 6955–6960, 1971. Thomson, A.W. P., Clark, T. D. G., and Kerridge, D. J.: Forecasting ap in the short-term using time series analysis, in Proceedings of the 1992 Solar-Terr. Predictions Workshop, 3, 269, 1993. Thomson, A. W. P.: Neural networks and non-linear prediction of geomagnetic activity, in: Proceedings of the 1993 International Workshop on Artificial Intelligence Applications in Solar Terrestrial Physics, 133, 1993. Wrenn, G. L.: Time-Weighted accumulations ap( ) and Kp( ), J. Geophys. Res., 92, 10 125–10 129, 1987. Wrenn, G. L., Rodger, A. S., and Rishbeth, H.: Geomagnetic storms in Antarctic F region.. I. Diurnal and seasonal patterns in main phase effects, J. Atmos. Terr. Phys., 49, 901–913, 1987. Wrenn, G. L. and Rodger, A. S.: Geomagnetic modification of the mid-latitude ionosphere: toward a strategy for the improved forecasting of foF2, Radio Sci., 24(1), 99–111, 1989. Zolesi, B. and Cander, Lj. R.: Advances in regional ionospheric mapping over Europe, Ann. Geofis., 41(5–6), 827–842, 1998. Zolesi, B., Belehaki, A., Tsagouri, I., and Cander, Lj. R.: Real-time updating of the Simplified Ionospheric Regional Model for operational applications, Radio Sci., 39(2), RS2011, doi:10.1029/2003RS002936, 2004. Zolesi, B., Fontana, G., Perrone, L., et al.: A new campaign for oblique-incidence ionospheric sounding over Europe and its data application, J. Atmos. Solar Terr. Phys., in press, 2007. | en |
| dc.description.obiettivoSpecifico | 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | reserved | en |
| dc.contributor.author | Pietrella, M. | en |
| dc.contributor.author | Perrone, L. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | restricted | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
| crisitem.author.orcid | 0000-0001-9069-4090 | - |
| crisitem.author.orcid | 0000-0003-4335-0345 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 01. Atmosphere | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Article published / in press | |
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