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    Rights statement: ©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model

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Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model. / Walach, M. T.; Milan, S. E.; Yeoman, T. K. et al.
In: Space Weather, Vol. 15, No. 4, 04.2017, p. 623-636.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Walach, MT, Milan, SE, Yeoman, TK, Hubert, BA & Hairston, MR 2017, 'Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model', Space Weather, vol. 15, no. 4, pp. 623-636. https://doi.org/10.1002/2017SW001615

APA

Walach, M. T., Milan, S. E., Yeoman, T. K., Hubert, B. A., & Hairston, M. R. (2017). Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model. Space Weather, 15(4), 623-636. https://doi.org/10.1002/2017SW001615

Vancouver

Walach MT, Milan SE, Yeoman TK, Hubert BA, Hairston MR. Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model. Space Weather. 2017 Apr;15(4):623-636. Epub 2017 Apr 20. doi: 10.1002/2017SW001615

Author

Walach, M. T. ; Milan, S. E. ; Yeoman, T. K. et al. / Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model. In: Space Weather. 2017 ; Vol. 15, No. 4. pp. 623-636.

Bibtex

@article{6824dae8142f4b5f970530a0c76578a3,
title = "Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model",
abstract = "The expanding/contracting polar cap (ECPC) model, or the time-dependent Dungey cycle, provides a theoretical framework for understanding solar wind-magnetosphere-ionosphere coupling. The ECPC describes the relationship between magnetopause reconnection and substorm growth phase, magnetotail reconnection and substorm expansion phase, associated changes in auroral morphology, and ionospheric convective motions. Despite the many successes of the model, there has yet to be a rigorous test of the predictions or nowcasts made regarding ionospheric convection, which remains a final hurdle for the validation of the ECPC. In this study we undertake a comparison of ionospheric convection, as measured in situ by ion drift meters on board DMSP (Defense Meteorological Satellite Program) satellites and from the ground by SuperDARN (Super Dual Auroral Radar Network), with motions nowcasted by a theoretical model. The model is coupled to measurements of changes in the size of the polar cap made using global auroral imagery from the IMAGE FUV (Imager for Magnetopause to Aurora Global Exploration Far Ultraviolet) instrument, as well as the dayside reconnection rate, estimated using the OMNI data set. The results show that we can largely nowcast the magnitudes of ionospheric convection flows using the context of our understanding of magnetic reconnection at the magnetopause and in the magnetotail.",
keywords = "Dungey cycle, Ionospheric convection, Solar wind-magnetosphere-ionosphere coupling",
author = "Walach, {M. T.} and Milan, {S. E.} and Yeoman, {T. K.} and Hubert, {B. A.} and Hairston, {M. R.}",
note = "{\textcopyright}2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.",
year = "2017",
month = apr,
doi = "10.1002/2017SW001615",
language = "English",
volume = "15",
pages = "623--636",
journal = "Space Weather",
issn = "1539-4956",
publisher = "Blackwell Publishing Ltd",
number = "4",

}

RIS

TY - JOUR

T1 - Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model

AU - Walach, M. T.

AU - Milan, S. E.

AU - Yeoman, T. K.

AU - Hubert, B. A.

AU - Hairston, M. R.

N1 - ©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

PY - 2017/4

Y1 - 2017/4

N2 - The expanding/contracting polar cap (ECPC) model, or the time-dependent Dungey cycle, provides a theoretical framework for understanding solar wind-magnetosphere-ionosphere coupling. The ECPC describes the relationship between magnetopause reconnection and substorm growth phase, magnetotail reconnection and substorm expansion phase, associated changes in auroral morphology, and ionospheric convective motions. Despite the many successes of the model, there has yet to be a rigorous test of the predictions or nowcasts made regarding ionospheric convection, which remains a final hurdle for the validation of the ECPC. In this study we undertake a comparison of ionospheric convection, as measured in situ by ion drift meters on board DMSP (Defense Meteorological Satellite Program) satellites and from the ground by SuperDARN (Super Dual Auroral Radar Network), with motions nowcasted by a theoretical model. The model is coupled to measurements of changes in the size of the polar cap made using global auroral imagery from the IMAGE FUV (Imager for Magnetopause to Aurora Global Exploration Far Ultraviolet) instrument, as well as the dayside reconnection rate, estimated using the OMNI data set. The results show that we can largely nowcast the magnitudes of ionospheric convection flows using the context of our understanding of magnetic reconnection at the magnetopause and in the magnetotail.

AB - The expanding/contracting polar cap (ECPC) model, or the time-dependent Dungey cycle, provides a theoretical framework for understanding solar wind-magnetosphere-ionosphere coupling. The ECPC describes the relationship between magnetopause reconnection and substorm growth phase, magnetotail reconnection and substorm expansion phase, associated changes in auroral morphology, and ionospheric convective motions. Despite the many successes of the model, there has yet to be a rigorous test of the predictions or nowcasts made regarding ionospheric convection, which remains a final hurdle for the validation of the ECPC. In this study we undertake a comparison of ionospheric convection, as measured in situ by ion drift meters on board DMSP (Defense Meteorological Satellite Program) satellites and from the ground by SuperDARN (Super Dual Auroral Radar Network), with motions nowcasted by a theoretical model. The model is coupled to measurements of changes in the size of the polar cap made using global auroral imagery from the IMAGE FUV (Imager for Magnetopause to Aurora Global Exploration Far Ultraviolet) instrument, as well as the dayside reconnection rate, estimated using the OMNI data set. The results show that we can largely nowcast the magnitudes of ionospheric convection flows using the context of our understanding of magnetic reconnection at the magnetopause and in the magnetotail.

KW - Dungey cycle

KW - Ionospheric convection

KW - Solar wind-magnetosphere-ionosphere coupling

U2 - 10.1002/2017SW001615

DO - 10.1002/2017SW001615

M3 - Journal article

VL - 15

SP - 623

EP - 636

JO - Space Weather

JF - Space Weather

SN - 1539-4956

IS - 4

ER -