Geophysical Research Letters Geophys. Res. Lett. 00948276 01 16 2015 42 1 Hermann Lühr GFZ, German Research Center for Geosciences; Potsdam Germany Jaeheung Park GFZ, German Research Center for Geosciences; Potsdam Germany Jesper W. Gjerloev Applied Physics Laboratory Johns Hopkins University; Laurel Maryland USA Birkeland Centre; University of Bergen; Bergen Norway Jan Rauberg GFZ, German Research Center for Geosciences; Potsdam Germany Ingo Michaelis GFZ, German Research Center for Geosciences; Potsdam Germany Jose M. G. Merayo DTU Space Center; Technical University of Denmark; Copenhagen Denmark Peter Brauer DTU Space Center; Technical University of Denmark; Copenhagen Denmark 01 16 2015 01 07 2015 1 8 GFZ German Reseach Centre for Geosciences http://doi.wiley.com/10.1002/tdm_license_1.1 10.1002/2014GL062453 http://doi.wiley.com/10.1002/2014GL062453 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2014GL062453 Anderson 2000 10.1029/2000GL000094 Sensing Global Birkeland currents with Iridium engineering magnetometer data Geophys. Res. Lett. 27 4045 Escoubet 2001 Introduction: The cluster mission Ann. Geophys. 19 1197 10.5194/angeo-19-1197-2001 Gjerloev 2011 10.5194/angeo-29-1713-2011 Characteristics of the terrestrial field-aligned current system Ann. Geophys. 29 1713 Iijima 1976 10.1029/JA081i013p02165 The amplitude distribution of field aligned currents at northern high latitudes observed by Triad J. Geophys. Res. 81 2165 Ishii 1992 10.1029/92JA00110 Correlation between magnetic and electric fields in the field-aligned current regions deduced from DE-2 observations J. Geophys. Res. 97 13,877 Lühr 2010 Solar cycle dependence of magnetospheric currents and a model of their near-Earth magnetic field Earth Planets Space 62 843 10.5047/eps.2010.07.012 Lühr 1996 10.1109/36.544560 An algorithm for estimating field-aligned currents from single spacecraft magnetic field measurements: A diagnostic tool applied to Freja satellite data IEEE Trans. Geosci. Remote Sens. 34 1369 Lynch 1999 10.1029/1999GL900599 Multiple-point electron measurements in a nightside auroral arc: Auroral Turbulence II particle observations Geophys. Res. Lett. 26 3361 Maus 2010 10.5047/eps.2010.07.006 NOAA/NGDC candidate models for the 11th generation International Geomagnetic Reference Field and the concurrent release of the 6th generation Pomme magnetic model Earth Planets Space 62 729 Olsen 2014 The CHAOS-4 geomagnetic field model Geophys. J. Int. 197 815 10.1093/gji/ggu033 Potemra 1987 10.1029/GL014i004p00419 Observations of large-scale Birkeland currents with Viking Geophys. Res. Lett. 14 419 Ritter 2013 Determining field-aligned currents with the Swarm constellation mission Earth Planets Space 65 1285 10.5047/eps.2013.09.006 Rother 2007 10.5194/angeo-25-1603-2007 CHAMP observation of intense kilometre-scale field-aligned currents, evidence for an Alfvén resonator Ann. Geophys. 25 1603 Slavin 2008 Space technology 5 multipoint measurements of near-Earth magnetic fields: Initial results Geophys. Res. Lett. 35 10.1029/2007GL031728 Stasiewicz 2000 Small scale Alfvénic structure in the aurora Space Sci. Rev. 92 423 10.1023/A:1005207202143 Zheng 2003 Multipoint measurements of field-aligned current density in the auroral zone J. Geophys. Res. 108 A5 1217 10.1029/2002JA009450 Zmuda 1966 10.1029/JZ071i021p05033 Transverse magnetic disturbances at 1100 kilometers in the auroral region J. Geophys. Res. 71 5033 Zmuda 1967 10.1029/JZ072i003p01115 Dayside magnetic disturbances at 1100 kilometers in the auroral oval J. Geophys. Res. 72 1115