Ionospheric effects of sudden stratospheric warming during moderate-to-high solar activity: Case study of January 2013

Larisa Petrovna Goncharenko, J. L. Chau, P. Condor, A. Coster, L. Benkevitch

研究成果: ジャーナルへの寄稿記事

46 引用 (Scopus)

抄録

A major sudden stratospheric warming (SSW) occurred in January 2013 during moderate-to-high solar activity conditions. Observations during the winter of 2012/2013 reveal strong ionospheric disturbances associated with this event. Anomalous variations in vertical ion drift measured at the geomagnetic equator at Jicamarca (12°S, 77°W) are observed for over 40 days. We report strong perturbations in the total electron content (TEC) that maximize in the crests of equatorial ionization anomaly, reach 100% of the background value, exhibit significant longitudinal and hemispheric asymmetry, and last for over 40 days. The magnitude of ionospheric anomalies in both vertical drifts and TEC is comparable to the anomalies observed during the record-strong SSW of January 2009 that coincided with the extreme solar minimum. This observation contrasts with results of numerical simulations that predict weaker ionospheric response to the tidal forcing during high solar activity. Key Points Ionospheric anomalies due to stratospheric warming of 2013 are long, > 40 days Ionospheric anomalies due to SSW are strong, up to 80-100% of the background This contrasts with numerical simulations

元の言語英語
ページ(範囲)4982-4986
ページ数5
ジャーナルGeophysical Research Letters
40
発行部数19
DOI
出版物ステータス出版済み - 10 16 2013

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stratospheric warming
solar activity
ionospherics
anomalies
anomaly
ionospheric disturbances
magnetic equator
winter
simulation
asymmetry
ionization
electrons
warming
perturbation
sudden stratospheric warming
effect
disturbance
ion
ions

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)
  • Geophysics

これを引用

Ionospheric effects of sudden stratospheric warming during moderate-to-high solar activity : Case study of January 2013. / Goncharenko, Larisa Petrovna; Chau, J. L.; Condor, P.; Coster, A.; Benkevitch, L.

:: Geophysical Research Letters, 巻 40, 番号 19, 16.10.2013, p. 4982-4986.

研究成果: ジャーナルへの寄稿記事

Goncharenko, Larisa Petrovna ; Chau, J. L. ; Condor, P. ; Coster, A. ; Benkevitch, L. / Ionospheric effects of sudden stratospheric warming during moderate-to-high solar activity : Case study of January 2013. :: Geophysical Research Letters. 2013 ; 巻 40, 番号 19. pp. 4982-4986.
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abstract = "A major sudden stratospheric warming (SSW) occurred in January 2013 during moderate-to-high solar activity conditions. Observations during the winter of 2012/2013 reveal strong ionospheric disturbances associated with this event. Anomalous variations in vertical ion drift measured at the geomagnetic equator at Jicamarca (12°S, 77°W) are observed for over 40 days. We report strong perturbations in the total electron content (TEC) that maximize in the crests of equatorial ionization anomaly, reach 100{\%} of the background value, exhibit significant longitudinal and hemispheric asymmetry, and last for over 40 days. The magnitude of ionospheric anomalies in both vertical drifts and TEC is comparable to the anomalies observed during the record-strong SSW of January 2009 that coincided with the extreme solar minimum. This observation contrasts with results of numerical simulations that predict weaker ionospheric response to the tidal forcing during high solar activity. Key Points Ionospheric anomalies due to stratospheric warming of 2013 are long, > 40 days Ionospheric anomalies due to SSW are strong, up to 80-100{\%} of the background This contrasts with numerical simulations",
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AU - Goncharenko, Larisa Petrovna

AU - Chau, J. L.

AU - Condor, P.

AU - Coster, A.

AU - Benkevitch, L.

PY - 2013/10/16

Y1 - 2013/10/16

N2 - A major sudden stratospheric warming (SSW) occurred in January 2013 during moderate-to-high solar activity conditions. Observations during the winter of 2012/2013 reveal strong ionospheric disturbances associated with this event. Anomalous variations in vertical ion drift measured at the geomagnetic equator at Jicamarca (12°S, 77°W) are observed for over 40 days. We report strong perturbations in the total electron content (TEC) that maximize in the crests of equatorial ionization anomaly, reach 100% of the background value, exhibit significant longitudinal and hemispheric asymmetry, and last for over 40 days. The magnitude of ionospheric anomalies in both vertical drifts and TEC is comparable to the anomalies observed during the record-strong SSW of January 2009 that coincided with the extreme solar minimum. This observation contrasts with results of numerical simulations that predict weaker ionospheric response to the tidal forcing during high solar activity. Key Points Ionospheric anomalies due to stratospheric warming of 2013 are long, > 40 days Ionospheric anomalies due to SSW are strong, up to 80-100% of the background This contrasts with numerical simulations

AB - A major sudden stratospheric warming (SSW) occurred in January 2013 during moderate-to-high solar activity conditions. Observations during the winter of 2012/2013 reveal strong ionospheric disturbances associated with this event. Anomalous variations in vertical ion drift measured at the geomagnetic equator at Jicamarca (12°S, 77°W) are observed for over 40 days. We report strong perturbations in the total electron content (TEC) that maximize in the crests of equatorial ionization anomaly, reach 100% of the background value, exhibit significant longitudinal and hemispheric asymmetry, and last for over 40 days. The magnitude of ionospheric anomalies in both vertical drifts and TEC is comparable to the anomalies observed during the record-strong SSW of January 2009 that coincided with the extreme solar minimum. This observation contrasts with results of numerical simulations that predict weaker ionospheric response to the tidal forcing during high solar activity. Key Points Ionospheric anomalies due to stratospheric warming of 2013 are long, > 40 days Ionospheric anomalies due to SSW are strong, up to 80-100% of the background This contrasts with numerical simulations

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