Accessibility navigation

Direct observation of the space hurricane disturbed polar thermosphere

Xiu, Z.‐F. ORCID:, Ma, Y.‐Z. ORCID:, Zhang, Q.‐H. ORCID:, Xing, Z.‐Y. ORCID:, Zhang, S.‐R. ORCID:, Zhang, Y.‐L. ORCID:, Oksavik, K. ORCID:, Lyons, L. ORCID:, Lockwood, M. ORCID: and Wang, Y. ORCID: (2024) Direct observation of the space hurricane disturbed polar thermosphere. Geophysical Research Letters, 51 (1). e2023GL106735. ISSN 1944-8007

Text (Open Access) - Published Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.


It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1029/2023gl106735


The space hurricane is a three‐dimensional magnetic vortex structure with strong flow shears and electron precipitation in the polar cap. This study investigates for the first time how a space hurricane disturbs the polar thermosphere. During the formation and development of the space hurricane, the directional reversal of the horizontal neutral wind and the plasma convection will both be relocated from the poleward auroral oval boundary to the edge of the space hurricane, but the neutral wind responds slower compared to the plasma convection. Strong flow shears in the space hurricane causes enhanced Joule heating in the polar cap, which heats the thermosphere and triggers Atmospheric Gravity Waves (AGWs). Statistical results reveal that significant AGWs mainly are located on the dawnside of the space hurricane, suggesting that the space hurricane plays a significant role in ion‐neutral coupling and generation of polar cap AGWs.

Item Type:Article
Divisions:Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
ID Code:114907
Uncontrolled Keywords:General Earth and Planetary Sciences, Geophysics
Publisher:American Geophysical Union (AGU)


Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation