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

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

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

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

Original languageEnglish
Pages (from-to)4982-4986
Number of pages5
JournalGeophysical Research Letters
Volume40
Issue number19
DOIs
Publication statusPublished - Oct 16 2013

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Ionospheric effects of sudden stratospheric warming during moderate-to-high solar activity: Case study of January 2013'. Together they form a unique fingerprint.

Cite this