Quiet variability of equatorial e × B drifts during a sudden stratospheric warming event

J. L. Chau, B. G. Fejer, L. P. Goncharenko

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

We present strong evidence that during the January 2008 minor sudden stratospheric warming (SSW) event, the equatorial vertical E×B drifts exhibit a unique and distinctive daytime pattern. We do not think one event causes the other, however both events might be related through the global effects of planetary waves. The drifts were measured by the Jicamarca Incoherent scatter radar located under the magnetic equator. We have observed an anomalous temporal variation of the vertical E × B drifts during the minor SSW event, showing a semidiurnal variation with very large amplitudes lasting for several days. Large differences in the E × B drifts were observed during a period of large increase of temperature and a large decrease of mean zonal wind, in the high latitude stratosphere (60°-90°N). This high correlation is an unexpected finding which might shed new light on sources and mechanisms of quiet-time ionospheric variability.

Original languageEnglish
Article numberL05101
JournalGeophysical Research Letters
Volume36
Issue number5
DOIs
Publication statusPublished - Mar 16 2009

Fingerprint

stratospheric warming
planetary wave
zonal wind
stratosphere
temporal variation
radar
incoherent scatter radar
magnetic equator
daytime
planetary waves
polar regions
ionospherics
temperature
sudden stratospheric warming
causes
effect

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Quiet variability of equatorial e × B drifts during a sudden stratospheric warming event. / Chau, J. L.; Fejer, B. G.; Goncharenko, L. P.

In: Geophysical Research Letters, Vol. 36, No. 5, L05101, 16.03.2009.

Research output: Contribution to journalArticle

Chau, J. L. ; Fejer, B. G. ; Goncharenko, L. P. / Quiet variability of equatorial e × B drifts during a sudden stratospheric warming event. In: Geophysical Research Letters. 2009 ; Vol. 36, No. 5.
@article{00d4508cace3461d8545bada69e7936c,
title = "Quiet variability of equatorial e × B drifts during a sudden stratospheric warming event",
abstract = "We present strong evidence that during the January 2008 minor sudden stratospheric warming (SSW) event, the equatorial vertical E×B drifts exhibit a unique and distinctive daytime pattern. We do not think one event causes the other, however both events might be related through the global effects of planetary waves. The drifts were measured by the Jicamarca Incoherent scatter radar located under the magnetic equator. We have observed an anomalous temporal variation of the vertical E × B drifts during the minor SSW event, showing a semidiurnal variation with very large amplitudes lasting for several days. Large differences in the E × B drifts were observed during a period of large increase of temperature and a large decrease of mean zonal wind, in the high latitude stratosphere (60°-90°N). This high correlation is an unexpected finding which might shed new light on sources and mechanisms of quiet-time ionospheric variability.",
author = "Chau, {J. L.} and Fejer, {B. G.} and Goncharenko, {L. P.}",
year = "2009",
month = "3",
day = "16",
doi = "10.1029/2008GL036785",
language = "English",
volume = "36",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "5",

}

TY - JOUR

T1 - Quiet variability of equatorial e × B drifts during a sudden stratospheric warming event

AU - Chau, J. L.

AU - Fejer, B. G.

AU - Goncharenko, L. P.

PY - 2009/3/16

Y1 - 2009/3/16

N2 - We present strong evidence that during the January 2008 minor sudden stratospheric warming (SSW) event, the equatorial vertical E×B drifts exhibit a unique and distinctive daytime pattern. We do not think one event causes the other, however both events might be related through the global effects of planetary waves. The drifts were measured by the Jicamarca Incoherent scatter radar located under the magnetic equator. We have observed an anomalous temporal variation of the vertical E × B drifts during the minor SSW event, showing a semidiurnal variation with very large amplitudes lasting for several days. Large differences in the E × B drifts were observed during a period of large increase of temperature and a large decrease of mean zonal wind, in the high latitude stratosphere (60°-90°N). This high correlation is an unexpected finding which might shed new light on sources and mechanisms of quiet-time ionospheric variability.

AB - We present strong evidence that during the January 2008 minor sudden stratospheric warming (SSW) event, the equatorial vertical E×B drifts exhibit a unique and distinctive daytime pattern. We do not think one event causes the other, however both events might be related through the global effects of planetary waves. The drifts were measured by the Jicamarca Incoherent scatter radar located under the magnetic equator. We have observed an anomalous temporal variation of the vertical E × B drifts during the minor SSW event, showing a semidiurnal variation with very large amplitudes lasting for several days. Large differences in the E × B drifts were observed during a period of large increase of temperature and a large decrease of mean zonal wind, in the high latitude stratosphere (60°-90°N). This high correlation is an unexpected finding which might shed new light on sources and mechanisms of quiet-time ionospheric variability.

UR - http://www.scopus.com/inward/record.url?scp=65649139623&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65649139623&partnerID=8YFLogxK

U2 - 10.1029/2008GL036785

DO - 10.1029/2008GL036785

M3 - Article

AN - SCOPUS:65649139623

VL - 36

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 5

M1 - L05101

ER -