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Statistical Study of the Relationship Between Ion Upflow and Field‐Aligned Current in the Topside Ionosphere for Both Hemispheres During Geomagnetic Disturbed and Quiet Time

Authors

Ma,  Yu‐Zhang
External Organizations;

Zhang,  Qing‐He
External Organizations;

Jayachandran,  P. T.
External Organizations;

Oksavik,  Kjellmar
External Organizations;

Lyons,  L. R.
External Organizations;

Xing,  Zan‐Yang
External Organizations;

/persons/resource/shanyuz

Zhou,  Shanyu
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Hairston,  Marc
External Organizations;

Wang,  Yong
External Organizations;

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Citation

Ma, Y., Zhang, Q., Jayachandran, P. T., Oksavik, K., Lyons, L. R., Xing, Z., Zhou, S., Hairston, M., Wang, Y. (2020): Statistical Study of the Relationship Between Ion Upflow and Field‐Aligned Current in the Topside Ionosphere for Both Hemispheres During Geomagnetic Disturbed and Quiet Time. - Journal of Geophysical Research: Space Physics, 125, e2019JA027538.
https://doi.org/10.1029/2019JA027538


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007294
Abstract
A statistical study of ion upflow and field-aligned currents (FACs) has been performed in the topside ionosphere of both hemispheres for magnetic quiet and disturbed times by using DMSP satellite observations from 2010–2013. Distributions in MLT/MLat reveal that ion upflow occurrence shows a dawn-dusk asymmetry distribution that matches well with the Region 1 FACs. In addition, there are highest occurrence regions near noon and within the midnight auroral disturbance area, corresponding to dayside cusp and nightside auroral disturbance regions, respectively. Both the ion upflow occurrence and FAC regions expand equatorward to a wider area during disturbed times.