Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9417| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Settimi, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.contributor.authorall | Pietrella, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.contributor.authorall | Pezzopane, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.contributor.authorall | Bianchi, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.date.accessioned | 2015-03-12T11:57:34Z | en |
| dc.date.available | 2015-03-12T11:57:34Z | en |
| dc.date.issued | 2015-04-15 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/9417 | en |
| dc.description | SPECIAL ISSUE: International Reference Ionosphere (IRI) and Global Navigation Satellite Systems (GNSS) | en |
| dc.description.abstract | The IONORT-ISP system (IONOspheric Ray-Tracing – IRI-SIRMUP-PROFILES) was recently developed and tested by comparing the measured oblique ionograms over the radio link between Rome (41.89ºN, 12.48ºE), Italy, and Chania (35.51ºN, 24.02ºE), Greece, with the IONORT-ISP simulated oblique ionograms (Settimi et al., 2013). The present paper describes an upgrade of the system to include: a) electron-neutral collision have been included by using a collision frequency model that consists of a double exponential profile; b) the ISP three dimensional (3-D) model of electron density profile grid has been extended down to the altitude of the D-layer; c) the resolution in latitude and longitude of the ISP 3-D model of electron density profile grid has been increased from 2°x2° to 1°x1°. Based on these updates, a new software tool called IONORT-ISP-WC (WC means with collisions) was developed, and a database of 33 IONORT-ISP-WC synthesized oblique ionograms calculated for single (1-hop paths) and multiple (3-hop paths) ionospheric reflections. The IONORT-ISP-WC simulated oblique ionograms were compared with the IONORT-IRI-WC synthesized oblique ionograms, generated by applying IONORT in conjunction with the International Reference Ionosphere (IRI) 3-D electron density grid, and the observed oblique ionograms over the aforementioned radio link. The results obtained show that (1) during daytime, for the lower ionospheric layers, the traces of the synthesized ionograms are cut away at low frequencies because of HF absorption; (2) during night-time, for the higher ionospheric layers, the traces of the simulated ionograms at low frequencies are not cut off (very little HF absorption); (3) the IONORT-ISP-WC MUF values are more accurate than the IONORT-IRI-WC MUF values. | en |
| dc.language.iso | English | en |
| dc.publisher.name | Elsevier Science Limited | en |
| dc.relation.ispartof | Advances in space research | en |
| dc.relation.ispartofseries | 8/55 (2014) | en |
| dc.subject | Ray-Tracing | en |
| dc.subject | Electron Density | en |
| dc.subject | IRI | en |
| dc.subject | Assimilative Modelling | en |
| dc.subject | Oblique Ionogram | en |
| dc.subject | Electron collision frequency model | en |
| dc.title | The IONORT-ISP-WC system: inclusion of an electron collision frequency model for the D-layer | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 2114-2123 | en |
| dc.identifier.URL | http://www.sciencedirect.com/science/article/pii/S0273117714004967# | en |
| dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous | en |
| dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.04. Plasma Physics | en |
| dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation | en |
| dc.subject.INGV | 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous | en |
| dc.subject.INGV | 05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementation | en |
| dc.identifier.doi | 10.1016/j.asr.2014.07.040 | en |
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S., Kuznetsova, M., Rastätter, L., et al.. CEDAR Electrodynamics Thermosphere Ionosphere (ETI) Challenge for systematic assessment of ionosphere/thermosphere models: NmF2, hmF2, and vertical drift using ground-based observations. Space Weather, 9 (12), S12003, doi:10.1029/2011SW000727, 2011. Stewart, F. G., Ionospheric Communications Enhanced Profile Analysis & Circuit (ICEPAC) Prediction Program, Technical Manual, 91 pp., undated. (http://elbert.its.bldrdoc.gov/hf_prop/manuals/icepac_tech_manual.pdf). Thompson, D. C., Scherliess, L., Sojka, J. J., and Schunk, R. W., The Utah State University Gauss-Markov Kalman filter of the ionosphere: The effect of slant TEC and electron density profile data on model fidelity, J. Atmos. Solar-Terr. Phys., 68 (9), 947–958, doi:10.1016/j.jastp.2005.10.011, 2006. | en |
| dc.description.obiettivoSpecifico | 2A. Fisica dell'alta atmosfera | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | partially_open | en |
| dc.relation.issn | 0273-1177 | en |
| dc.relation.eissn | 1879-1948 | en |
| dc.contributor.author | Settimi, A. | en |
| dc.contributor.author | Pietrella, M. | en |
| dc.contributor.author | Pezzopane, M. | en |
| dc.contributor.author | Bianchi, C. | 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 |
| 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.languageiso639-1 | en | - |
| item.cerifentitytype | Publications | - |
| item.openairetype | article | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| item.grantfulltext | open | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| 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.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
| crisitem.author.orcid | 0000-0002-9487-2242 | - |
| crisitem.author.orcid | 0000-0001-9069-4090 | - |
| crisitem.author.orcid | 0000-0001-5800-2322 | - |
| crisitem.author.orcid | 0000-0002-0217-5379 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 01. Atmosphere | - |
| crisitem.classification.parent | 01. Atmosphere | - |
| crisitem.classification.parent | 01. Atmosphere | - |
| crisitem.classification.parent | 05. General | - |
| crisitem.classification.parent | 05. General | - |
| Appears in Collections: | Article published / in press | |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| ASR-D-14-00169R2.pdf | Main Article (pdf) | 631.67 kB | Adobe PDF | View/Open |
| Settimi et al., Adv. Space Res. (2015).doc | Main Article (doc) | 118.5 kB | Microsoft Word |
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