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Multispacecraft Observations and Modeling of the 22/23 June 2015 Geomagnetic StormThe magnetic storm of 22-23 June 2015 was one of the largest in the current solar cycle. We present in situ observations from the Magnetospheric Multiscale Mission (MMS) and the Van Allen Probes (VAP) in the magnetotail, field-aligned currents from AMPERE (Active Magnetosphere and Planetary Electrodynamics Response), and ionospheric flow data from Defense Meteorological Satellite Program (DMSP). Our real-time space weather alert system sent out a "red alert," correctly predicting Kp indices greater than 8. We show strong outflow of ionospheric oxygen, dipolarizations in the MMS magnetometer data, and dropouts in the particle fluxes seen by the MMS Fast Plasma Instrument suite. At ionospheric altitudes, the AMPERE data show highly variable currents exceeding 20 MA. We present numerical simulations with the Block Adaptive Tree-Solarwind - Roe - Upwind Scheme (BATS-R-US) global magnetohydrodynamic model linked with the Rice Convection Model. The model predicted the magnitude of the dipolarizations, and varying polar cap convection patterns, which were confirmed by DMSP measurements.
Document ID
20160011092
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Reiff, P. H.
(Rice Univ. Houston, TX, United States)
Daou, A. G.
(Rice Univ. Houston, TX, United States)
Sazykin, S. Y.
(Rice Univ. Houston, TX, United States)
Nakamura, R.
(Space Research Inst. Graz, Austria)
Hairston, M. R.
(Texas Univ. at Dallas Richardson, TX, United States)
Coffey, V.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Chandler, M. O.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Anderson, B. J.
(Johns Hopkins Univ. Laurel, MD, United States)
Russell, C. T.
(California Univ. Los Angeles, CA, United States)
Welling, D.
(Michigan Univ. Ann Arbor, MI, United States)
Fuselier, S. A.
(Southwest Research Inst. San Antonio, TX, United States)
Genestreti, K. J.
(Southwest Research Inst. San Antonio, TX, United States)
Date Acquired
September 6, 2016
Publication Date
July 20, 2016
Publication Information
Publication: Geophysical Research Letters
Volume: 43
Issue: 14
ISSN: 0094-8276
Subject Category
Geophysics
Report/Patent Number
M16-5473
Funding Number(s)
CONTRACT_GRANT: NNX14AN55G
CONTRACT_GRANT: NSF AGS-1259508
WBS: WBS 943396.05.03.02.10.02
CONTRACT_GRANT: NASA MMS 599790Q
Distribution Limits
Public
Copyright
Other

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