Responses of the mesospheric wind at high latitudes to the April 2002 space storm

S P Zhang; J E Salah; N Mitchell; W Singer; Y Murayama; R R Clark; A van Eyken; J Thayer

doi:10.1029/2003gl018521

Responses of the mesospheric wind at high latitudes to the April 2002 space storm

S P Zhang, J E Salah, N Mitchell, W Singer, Y Murayama, R R Clark, A van Eyken, J Thayer

Department of Electronic & Electrical Engineering

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9 Citations (SciVal)

Abstract

[1] An intense space storm occurred on 17 - 20 April, 2002. The effects of this storm on the mesospheric wind system were observed by two meteor wind radars at Andenes (69N, 16E) and Esrange (68N, 21E). At those locations, neutral winds showed a pattern similar to the ion convection pattern on 17 April for several hours at altitudes of 94 - 97 km. It is the first time that this kind of wind pattern is detected at such low altitudes. In contrast, winds by a medium frequency radar at Poker Flat (65N, 213E) showed no obvious storm effect, reflecting different responses of the dayside atmosphere and the nightside atmosphere. The ion convection wind pattern at Andenes and Esrange only appeared on the first day of the storm. We hypothesize that this behaviour may be related to a short-lived but prominent electron density enhancement in the local thermosphere on the same day observed by an incoherent scatter radar at Svalbard (78N, 16E).

Original language	English
Journal	Geophysical Research Letters
Volume	30
Issue number	23
DOIs	https://doi.org/10.1029/2003gl018521
Publication status	Published - 2003

Bibliographical note

ID number: ISI:000187489700006

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@article{22f7b038b69e4bacb8c3292c0e6291ba,

title = "Responses of the mesospheric wind at high latitudes to the April 2002 space storm",

abstract = "[1] An intense space storm occurred on 17 - 20 April, 2002. The effects of this storm on the mesospheric wind system were observed by two meteor wind radars at Andenes (69N, 16E) and Esrange (68N, 21E). At those locations, neutral winds showed a pattern similar to the ion convection pattern on 17 April for several hours at altitudes of 94 - 97 km. It is the first time that this kind of wind pattern is detected at such low altitudes. In contrast, winds by a medium frequency radar at Poker Flat (65N, 213E) showed no obvious storm effect, reflecting different responses of the dayside atmosphere and the nightside atmosphere. The ion convection wind pattern at Andenes and Esrange only appeared on the first day of the storm. We hypothesize that this behaviour may be related to a short-lived but prominent electron density enhancement in the local thermosphere on the same day observed by an incoherent scatter radar at Svalbard (78N, 16E).",

author = "Zhang, {S P} and Salah, {J E} and N Mitchell and W Singer and Y Murayama and Clark, {R R} and {van Eyken}, A and J Thayer",

note = "ID number: ISI:000187489700006",

year = "2003",

doi = "10.1029/2003gl018521",

language = "English",

volume = "30",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "Wiley-Blackwell",

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TY - JOUR

T1 - Responses of the mesospheric wind at high latitudes to the April 2002 space storm

AU - Zhang, S P

AU - Salah, J E

AU - Mitchell, N

AU - Singer, W

AU - Murayama, Y

AU - Clark, R R

AU - van Eyken, A

AU - Thayer, J

N1 - ID number: ISI:000187489700006

PY - 2003

Y1 - 2003

N2 - [1] An intense space storm occurred on 17 - 20 April, 2002. The effects of this storm on the mesospheric wind system were observed by two meteor wind radars at Andenes (69N, 16E) and Esrange (68N, 21E). At those locations, neutral winds showed a pattern similar to the ion convection pattern on 17 April for several hours at altitudes of 94 - 97 km. It is the first time that this kind of wind pattern is detected at such low altitudes. In contrast, winds by a medium frequency radar at Poker Flat (65N, 213E) showed no obvious storm effect, reflecting different responses of the dayside atmosphere and the nightside atmosphere. The ion convection wind pattern at Andenes and Esrange only appeared on the first day of the storm. We hypothesize that this behaviour may be related to a short-lived but prominent electron density enhancement in the local thermosphere on the same day observed by an incoherent scatter radar at Svalbard (78N, 16E).

AB - [1] An intense space storm occurred on 17 - 20 April, 2002. The effects of this storm on the mesospheric wind system were observed by two meteor wind radars at Andenes (69N, 16E) and Esrange (68N, 21E). At those locations, neutral winds showed a pattern similar to the ion convection pattern on 17 April for several hours at altitudes of 94 - 97 km. It is the first time that this kind of wind pattern is detected at such low altitudes. In contrast, winds by a medium frequency radar at Poker Flat (65N, 213E) showed no obvious storm effect, reflecting different responses of the dayside atmosphere and the nightside atmosphere. The ion convection wind pattern at Andenes and Esrange only appeared on the first day of the storm. We hypothesize that this behaviour may be related to a short-lived but prominent electron density enhancement in the local thermosphere on the same day observed by an incoherent scatter radar at Svalbard (78N, 16E).

U2 - 10.1029/2003gl018521

DO - 10.1029/2003gl018521

M3 - Article

SN - 0094-8276

VL - 30

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 23

ER -

Responses of the mesospheric wind at high latitudes to the April 2002 space storm

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