Unusual Enhancements of NmF2 in Anyang Ionosonde Data

Yun, Jong-Yeon; Kim, Yong Ha; Kim, Eojin; Kwak, Young‐Sil; Hong, Seong Eon

doi:10.5140/jass.2013.30.4.223

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…2 (4) NmF2 is an important physical quantity for space weather forecasts or radio communication, and thus precise observation and accurate analysis are essential [51].…”

Section: Nmf2-giro and Gambitmentioning

confidence: 99%

Towards Cooperative Global Mapping of the Ionosphere: Fusion Feasibility for IGS and IRI with Global Climate VTEC Maps

et al. 2020

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Recommendations of the International Reference Ionosphere (IRI) Workshop 2017 in Taoyuan City, Taiwan and International GNSS Service (IGS) Workshop 2018 in Wuhan, China included establishment of an ionosphere mapping service that would fuse measurements from two independent sensor networks: IGS permanent GNSS receivers providing the vertical total electron content (VTEC) measurements and ionosondes of the Global Ionosphere Radio Observatory (GIRO) that compute the bottomside vertical profiles of the ionospheric plasma density. Using available GAMBIT software at GIRO, we introduced new VTEC products to its data roster: previously unavailable global average (climate) maps of VTEC and slab thickness based on climatological capabilities of IRI. Incorporation of the VTEC and maps into the GAMBIT Explorer environment provided data analysts with nearly 10-year history of the reference average VTEC records and opened access to the GAMBIT toolkit for evaluation and validation of the computations. This result is the first step towards establishing an infrastructure and the data workflow to provide GAMBIT users with the low latency and consistent quality and usability of the ionospheric weather-climate specifications. Combination of IGS-provided VTEC and GIRO-provided peak density of F2 layer NmF2 allows ground-based evaluation of the equivalent slab thickness , a derived property of the near-Earth plasma that characterizes the skewness of its vertical profile up to the GNSS spacecraft altitudes.

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“…2 (4) NmF2 is an important physical quantity for space weather forecasts or radio communication, and thus precise observation and accurate analysis are essential [51].…”

Section: Nmf2-giro and Gambitmentioning

confidence: 99%

Towards Cooperative Global Mapping of the Ionosphere: Fusion Feasibility for IGS and IRI with Global Climate VTEC Maps

et al. 2020

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“…Note that a similar equation was used in the case study of Yun et al (2013). European Space Agency (ESA) operates the Swarm constellation that consists of three identical satellites launched on November 22, 2013 into a polar circular orbit.…”

Section: Instrumentsmentioning

confidence: 99%

Vertical Scale Height of the Topside Ionosphere Around the Korean Peninsula: Estimates from Ionosondes and the Swarm Constellation

Park¹,

Kwak²,

Mun³

et al. 2015

Journal of Astronomy and Space Sciences

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In this study, we estimated the topside scale height of plasma density (Hm) using the Swarm constellation and ionosondes in Korea. The Hm above Korean Peninsula is generally around 50 km. Statistical distributions of the topside scale height exhibited a complex dependence upon local time and season. The results were in general agreement with those of Tulasi Ram et al. (2009), who used the same method to calculate the topside scale height in a mid-latitude region. On the contrary, our results did not fully coincide with those obtained by Liu et al. (2007), who used electron density profiles from Arecibo Incoherent Scatter Radar (ISR) between 1966 and 2002. The disagreement may result from the limitations in our approximation method and data coverage used for estimations, as well as the inherent dependence of Hm on Geographic LONgitude (GLON).

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“…Ionospheric variations normally responding to solar and geomagnetic activities show latitudinal, seasonal, and local time characteristics (Lekshmi et al 2011;Chen et al 2012;Yun et al 2013;Borries et al 2015). The GPS Total Electron Content (TEC) often increases or decreases in response to geomagnetic storms and solar activities as compared to that during periods of normal ionospheric states or their monthly median values.…”

Section: Introductionmentioning

confidence: 99%

Statistics of Ionospheric Storms Using GPS TEC Measurements Between 2002 and 2014 in Jeju, Korea

Chung¹,

Choi²

2015

Journal of Astronomy and Space Sciences

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Unusual Enhancements of NmF2 in Anyang Ionosonde Data

Cited by 5 publications

References 5 publications

Towards Cooperative Global Mapping of the Ionosphere: Fusion Feasibility for IGS and IRI with Global Climate VTEC Maps

Towards Cooperative Global Mapping of the Ionosphere: Fusion Feasibility for IGS and IRI with Global Climate VTEC Maps

Vertical Scale Height of the Topside Ionosphere Around the Korean Peninsula: Estimates from Ionosondes and the Swarm Constellation

Statistics of Ionospheric Storms Using GPS TEC Measurements Between 2002 and 2014 in Jeju, Korea

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