DOI: 10.1002/2016GL068944
论文题名: Long-term analysis between radio occultation and ionosonde peak electron density and height during geomagnetic storms
作者: Habarulema J.B. ; Carelse S.A.
刊名: Geophysical Research Letters
ISSN: 0094-9018
EISSN: 1944-8749
出版年: 2016
卷: 43, 期: 9 起始页码: 4106
结束页码: 4111
语种: 英语
英文关键词: ionosonde
; maximum electron density and peak height
; radio occultation
英文摘要: For the first time, a long-term comparative analysis of radio occultation (RO) maximum electron density and peak height of the F2 layer (NmF2 and hmF2) with ionosonde data is presented during geomagnetic storm periods. Using the optimum spatial resolution of 4.5° × 4.5° in both latitude and longitude space over Grahamstown, GR13L(33.3°S, 26.5°E), South Africa, RO NmF2 and hmF2 (from CHAMP and COSMIC/FORMOSAT-3) are directly compared to ionosonde values within 15 min of ionosonde observational data from 2003 to end of May 2015. This study provides for the first time the deviation of RO data from ionosonde data on a long-term scale during disturbed conditions in a midlatitude region. We have found that maximum deviations between RO and ionosonde hmF2/NmF2 occur during the high solar activity periods. For some storms, deviations between RO and ionosonde hmF2 can reach values just over 30 km and 85 km during 2005-2010 and 2011-2015, respectively. Overall, statistical results show that hmF2 and NmF2 from these independent data sets agree to within ∼9% and 21% (1 standard deviation, 1σ) from 2003 to 2015. While the deviation can be large during some storm events, statistically and based on ionosonde data, RO F2 peak parameters in midlatitudes are not degraded significantly during disturbed conditions and can therefore be reliably used to study ionospheric dynamics during extreme space weather events. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971012326&doi=10.1002%2f2016GL068944&partnerID=40&md5=775a07086ae6a294c41ce75a9ba480e9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9981
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: South African National Space Agency, Space Science, Hermanus, South Africa
Recommended Citation:
Habarulema J.B.,Carelse S.A.. Long-term analysis between radio occultation and ionosonde peak electron density and height during geomagnetic storms[J]. Geophysical Research Letters,2016-01-01,43(9).