TY - JOUR AU - Amm, O. PY - 1997 DA - 1997// TI - Ionospheric elementary current systems in spherical coordinates and their application JO - J Geomagn Geoelectr VL - 49 UR - https://doi.org/10.5636/jgg.49.947 DO - 10.5636/jgg.49.947 ID - Amm1997 ER - TY - JOUR AU - Anderson, B. J. AU - Takahashi, K. AU - Toth, B. A. PY - 2000 DA - 2000// TI - Sensing global Birkeland currents with Iridium engineering magnetometer data JO - Geophys Res Lett VL - 27 UR - https://doi.org/10.1029/2000GL000094 DO - 10.1029/2000GL000094 ID - Anderson2000 ER - TY - JOUR AU - Anderson, B. J. AU - Korth, H. AU - Waters, C. L. AU - Green, D. L. AU - Stauning, P. PY - 2008 DA - 2008// TI - Statistical Birkeland current distributions from magnetic field observations by the iridium constellation JO - Ann Geophys VL - 26 UR - https://doi.org/10.5194/angeo-26-671-2008 DO - 10.5194/angeo-26-671-2008 ID - Anderson2008 ER - TY - JOUR AU - Backus, G. PY - 1986 DA - 1986// TI - Poloidal and toroidal fields in geomagnetic field modeling JO - Rev Geophys VL - 24 UR - https://doi.org/10.1029/RG024i001p00075 DO - 10.1029/RG024i001p00075 ID - Backus1986 ER - TY - BOOK AU - Chapman, S. AU - Bartels, J. PY - 1940 DA - 1940// TI - Geomagnetism PB - Oxford University Press CY - London ID - Chapman1940 ER - TY - JOUR AU - Christiansen, F. AU - Papitashvili, V. O. AU - Neubert, T. PY - 2002 DA - 2002// TI - Seasonal variation of high-latitude field-aligned currents inferred from ørsted and Magsat observations JO - J Geophys Res ID - Christiansen2002 ER - TY - JOUR AU - Emmert, J. T. AU - Richmond, A. D. AU - Drob, D. P. PY - 2010 DA - 2010// TI - A computationally compact representation of magnetic apex and quasi dipole coordinates with smooth base vectors JO - J Geophys Res ID - Emmert2010 ER - TY - JOUR AU - Finlay, C. C. AU - Olsen, N. AU - Tøffner-Clausen, L. PY - 2015 DA - 2015// TI - DTU candidate field models for IGRF-12 and the CHAOS-5 geomagnetic field model JO - Earth Planets Space VL - 67 UR - https://doi.org/10.1186/s40623-015-0274-3 DO - 10.1186/s40623-015-0274-3 ID - Finlay2015 ER - TY - JOUR AU - Friis-Christensen, E. AU - Wilhjelm, J. PY - 1975 DA - 1975// TI - Polar cap currents for different directions of the interplanetary magnetic field in the y–z plane JO - J Geophys Res VL - 80 UR - https://doi.org/10.1029/JA080i010p01248 DO - 10.1029/JA080i010p01248 ID - Friis-Christensen1975 ER - TY - JOUR AU - Friis-Christensen, E. AU - Kamide, Y. AU - Richmond, A. D. AU - Matsushita, S. PY - 1984 DA - 1984// TI - Interplanetary magnetic field control of high-latitude electric fields and currents determined from Greenland Magnetometer Data JO - J Geophys Res VL - 90 UR - https://doi.org/10.1029/JA090iA02p01325 DO - 10.1029/JA090iA02p01325 ID - Friis-Christensen1984 ER - TY - JOUR AU - Fujii, R. AU - Iijima, T. AU - Potemra, T. A. AU - Sugiura, M. PY - 1981 DA - 1981// TI - Seasonal dependence of large-scale Birkeland currents JO - Geophys Res Lett VL - 8 UR - https://doi.org/10.1029/GL008i010p01103 DO - 10.1029/GL008i010p01103 ID - Fujii1981 ER - TY - JOUR AU - Fukushima, N. PY - 1994 DA - 1994// TI - Some topics and historical episodes in geomagnetism and aeronomy JO - J Geophys Res VL - 99 UR - https://doi.org/10.1029/94JA00102 DO - 10.1029/94JA00102 ID - Fukushima1994 ER - TY - JOUR AU - Ganushkina, N. Y. AU - Liemohn, M. W. AU - Dubyagin, S. AU - Daglis, I. A. AU - Dandouras, I. AU - Zeeuw, D. L. D. AU - Ebihara, Y. AU - Ilie, R. AU - Katus, R. AU - Kubyshkina, M. AU - Milan, S. E. AU - Ohtani, S. AU - Ostgaard, N. AU - Reistad, J. P. AU - Tenfjord, P. AU - Toffoletto, F. AU - Zaharia, S. AU - Amariutei, O. PY - 2015 DA - 2015// TI - Defining and resolving current systems in geospace JO - Ann Geophys VL - 33 UR - https://doi.org/10.5194/angeo-33-1369-2015 DO - 10.5194/angeo-33-1369-2015 ID - Ganushkina2015 ER - TY - JOUR AU - Gasda, S. AU - Richmond, A. D. PY - 1998 DA - 1998// TI - Longitudinal and interhemispheric variations of auroral ionospheric electrodynamics in a realistic geomagnetic field JO - J Geophys Res VL - 103 UR - https://doi.org/10.1029/97JA03243 DO - 10.1029/97JA03243 ID - Gasda1998 ER - TY - JOUR AU - Gjerloev, J. W. PY - 2012 DA - 2012// TI - The superMAG data processing technique JO - J Geophys Res ID - Gjerloev2012 ER - TY - JOUR AU - Green, D. L. AU - Waters, C. L. AU - Korth, H. AU - Anderson, B. J. AU - Ridley, A. J. AU - Barnes, R. J. PY - 2007 DA - 2007// TI - Technique: large-scale ionospheric conductance estimated from combined satellite and ground-based electromagnetic data JO - J Geophys Res ID - Green2007 ER - TY - JOUR AU - Green, D. L. AU - Waters, C. L. AU - Anderson, B. J. AU - Korth, H. PY - 2009 DA - 2009// TI - Seasonal and interplanetary magnetic field dependence of the field-aligned currents for both Northern and Southern Hemispheres JO - Ann Geophys VL - 27 UR - https://doi.org/10.5194/angeo-27-1701-2009 DO - 10.5194/angeo-27-1701-2009 ID - Green2009 ER - TY - JOUR AU - Haaland, S. E. AU - Paschmann, G. AU - Forster, M. AU - Quinn, J. M. AU - Torbert, R. B. AU - McIlwain, C. E. AU - Vaith, H. AU - Puhl-Quinn, P. A. AU - Kletzing, C. A. PY - 2007 DA - 2007// TI - High-latitude plasma convection from cluster EDI measurements: method and IMF-dependence JO - Ann Geophys ID - Haaland2007 ER - TY - JOUR AU - He, M. AU - Vogt, J. AU - Lühr, H. AU - Sorbalo, E. AU - Blagau, A. AU - Le, G. AU - Lu, G. PY - 2012 DA - 2012// TI - A high-resolution model of field-aligned currents through empirical orthogonal functions analysis (MFACE) JO - Geophys Res Lett ID - He2012 ER - TY - JOUR AU - Heppner, J. P. AU - Maynard, N. C. PY - 1987 DA - 1987// TI - Empirical high-latitude electric field models JO - J Geophys Res VL - 92 UR - https://doi.org/10.1029/JA092iA05p04467 DO - 10.1029/JA092iA05p04467 ID - Heppner1987 ER - TY - JOUR AU - Huber, P. J. PY - 1964 DA - 1964// TI - Robust estimation of location parameter JO - Ann Math Stat VL - 35 UR - https://doi.org/10.1214/aoms/1177703732 DO - 10.1214/aoms/1177703732 ID - Huber1964 ER - TY - JOUR AU - Iijima, T. AU - Potemra, T. A. PY - 1978 DA - 1978// TI - Large-scale characteristics of field-aligned currents associated with substorms JO - J Geophys Res VL - 83 UR - https://doi.org/10.1029/JA083iA02p00599 DO - 10.1029/JA083iA02p00599 ID - Iijima1978 ER - TY - JOUR AU - Juusola, L. AU - Milan, S. E. AU - Lester, M. AU - Grocott, A. AU - Imber, S. M. PY - 2014 DA - 2014// TI - Interplanetary magnetic field control of the ionospheric field-aligned current and convection distributions JO - J Geophys Res ID - Juusola2014 ER - TY - JOUR AU - Kamide, Y. AU - Richmond, A. D. AU - Matsushita, S. PY - 1981 DA - 1981// TI - Estimation of ionospheric electric fields, ionospheric currents, and field-aligned currents from ground magnetic records JO - J Geophys Res VL - 86 UR - https://doi.org/10.1029/JA086iA02p00801 DO - 10.1029/JA086iA02p00801 ID - Kamide1981 ER - TY - JOUR AU - Laundal, K. M. AU - Gjerloev, J. W. PY - 2014 DA - 2014// TI - What is the appropriate coordinate system for magnetometer data when analyzing ionospheric currents? JO - J Geophys Res ID - Laundal2014 ER - TY - JOUR AU - Laundal, K. M. AU - Haaland, S. E. AU - Lehtinen, N. AU - Gjerloev, J. W. AU - Ostgaard, N. AU - Tenfjord, P. AU - Reistad, J. P. AU - Snekvik, K. AU - Milan, S. E. AU - Ohtani, S. AU - Anderson, B. J. PY - 2015 DA - 2015// TI - Birkeland current effects on high-latitude ground magnetic field perturbations JO - Geophys Res Lett ID - Laundal2015 ER - TY - JOUR AU - Laundal, K. M. AU - Gjerloev, J. W. AU - Ostgaard, N. AU - Reistad, J. P. AU - Haaland, S. E. AU - Snekvik, K. AU - Tenfjord, P. AU - Ohtani, S. AU - Milan, S. E. PY - 2016 DA - 2016// TI - The impact of sunlight on high-latitude equivalent currents JO - J Geophys Res ID - Laundal2016 ER - TY - STD TI - Le G, Slavin JA, Strangeway RJ(2010) Space technology 5 observations of the imbalance of region 1 and 2 field-aligned currents and its implication to the cross-polar cap Pedersen current. J Geophys Res. doi:10.1029/2009JA014979 ID - ref28 ER - TY - JOUR AU - Lesur, V. AU - Wardinski, I. AU - Rother, M. AU - Mandea, M. PY - 2008 DA - 2008// TI - GRIMM: the GFZ Reference Internal Magnetic Model based on vector satellite and observatory data JO - Geophys J Int VL - 173 UR - https://doi.org/10.1111/j.1365-246X.2008.03724.x DO - 10.1111/j.1365-246X.2008.03724.x ID - Lesur2008 ER - TY - STD TI - Lu G (2013) A synthetic view of the magnetospheric-ionospheric current system associated with substorms. American Geophysical Union. doi:10.1029/GM118p0199 ID - ref30 ER - TY - JOUR AU - Lysak, R. L. PY - 1991 DA - 1991// TI - Feedback instability of the ionospheric resonant cavity JO - J Geophys Res VL - 96 UR - https://doi.org/10.1029/90JA02154 DO - 10.1029/90JA02154 ID - Lysak1991 ER - TY - JOUR AU - Matsuo, T. AU - Knipp, D. J. AU - Richmond, A. D. AU - Kilcommons, L. AU - Anderson, B. J. PY - 2015 DA - 2015// TI - Inverse procedure for high-latitude ionospheric electrodynamics: analysis of satellite-borne magnetometer data JO - J Geophys Res ID - Matsuo2015 ER - TY - JOUR AU - Newell, P. T. AU - Gjerloev, J. W. PY - 2011 DA - 2011// TI - Evaluation of SuperMAG auroral electrojet indices as indicators of substorms and auroral power JO - J Geophys Res ID - Newell2011 ER - TY - JOUR AU - Newell, P. T. AU - Meng, C. -. I. AU - Lyons, K. M. PY - 1996 DA - 1996// TI - Suppression of discrete aurorae by sunlight JO - Nature VL - 381 UR - https://doi.org/10.1038/381766a0 DO - 10.1038/381766a0 ID - Newell1996 ER - TY - JOUR AU - Newell, P. T. AU - Sotirelis, T. AU - Wing, S. PY - 2010 DA - 2010// TI - Seasonal variations in diffuse, monoenergetic, and broadband aurora JO - J Geophys Res ID - Newell2010 ER - TY - JOUR AU - Ohtani, S. AU - Ueno, G. AU - Higuchi, T. PY - 2005 DA - 2005// TI - Comparison of large-scale field-aligned currents under sunlit and dark ionospheric conditions JO - J Geophys Res ID - Ohtani2005 ER - TY - JOUR AU - Ohtani, S. AU - Ueno, G. AU - Higuchi, T. AU - Kawano, H. PY - 2005 DA - 2005// TI - Annual and semiannual variations of the location and intensity of large-scale field-aligned currents JO - J Geophys Res ID - Ohtani2005 ER - TY - JOUR AU - Olsen, N. PY - 1997 DA - 1997// TI - Ionospheric F region currents at middle and low latitudes estimated from Magsat data JO - J Geophys Res VL - 102 UR - https://doi.org/10.1029/96JA02949 DO - 10.1029/96JA02949 ID - Olsen1997 ER - TY - STD TI - Østgaard N, Reistad JP, Tenfjord P, Laundal KM, Snekvik K, Milan S, Haaland S (2016) Mechanisms that produce auroral asymmetries in conjugate hemispheres. In: Zhang Y, Paxton LJ (eds) Auroral dynamics and space weather. Geophysical monograph 215, 1st edn. Wiley, pp 133–144 ID - ref39 ER - TY - JOUR AU - Papitashvili, V. O. AU - Christiansen, F. AU - Neubert, T. PY - 2002 DA - 2002// TI - A new model of field-aligned currents derived from high-precision satellite magnetic field data JO - Geophys Res Lett ID - Papitashvili2002 ER - TY - JOUR AU - Pettigrew, E. D. AU - Shepherd, S. G. AU - Ruohoniemi, J. M. PY - 2010 DA - 2010// TI - Climatological patterns of high-latitude convection in the Northern and Southern hemispheres: dipole tilt dependencies and interhemispheric comparison JO - J Geophys Res ID - Pettigrew2010 ER - TY - JOUR AU - Richmond, A. D. PY - 1995 DA - 1995// TI - Ionospheric electrodynamics using magnetic apex coordinates JO - J Geomagn Geoelectr VL - 47 UR - https://doi.org/10.5636/jgg.47.191 DO - 10.5636/jgg.47.191 ID - Richmond1995 ER - TY - JOUR AU - Ritter, P. AU - Lühr, H. AU - Viljanen, A. AU - Amm, O. AU - Pulkkinen, A. AU - Sillanpää, I. PY - 2005 DA - 2005// TI - Ionospheric currents estimated simultaneously from CHAMP satellite and IMAGE ground-based magnetic field measurements: a statistical study at auroral latitudes JO - Ann Geophys VL - 22 UR - https://doi.org/10.5194/angeo-22-417-2004 DO - 10.5194/angeo-22-417-2004 ID - Ritter2005 ER - TY - JOUR AU - Sabaka, T. J. AU - Olsen, N. AU - Langel, R. A. PY - 2002 DA - 2002// TI - A comprehensive model of the quiet-time, near-Earth magnetic field: phase 3 JO - Geophys J Int VL - 151 UR - https://doi.org/10.1046/j.1365-246X.2002.01774.x DO - 10.1046/j.1365-246X.2002.01774.x ID - Sabaka2002 ER - TY - JOUR AU - Sabaka, T. J. AU - Olsen, N. AU - Purucker, M. E. PY - 2004 DA - 2004// TI - Extending comprehensive models of the Earth’s magnetic field with Ørsted and CHAMP data JO - Geophys J Int VL - 159 UR - https://doi.org/10.1111/j.1365-246X.2004.02421.x DO - 10.1111/j.1365-246X.2004.02421.x ID - Sabaka2004 ER - TY - CHAP AU - Sabaka, T. J. AU - Hulot, G. AU - Olsen, N. ED - Freeden, W. ED - Nashed, M. Z. ED - Sonar, T. PY - 2010 DA - 2010// TI - Mathematical properties relevant to geomagnetic field modeling BT - Handbook of geomathematics PB - Springer CY - Berlin UR - https://doi.org/10.1007/978-3-642-01546-5_17 DO - 10.1007/978-3-642-01546-5_17 ID - Sabaka2010 ER - TY - JOUR AU - Untiedt, J. AU - Baumjohann, W. PY - 1993 DA - 1993// TI - Studies of polar current systems using the IMS Scandinavian magnetometer array JO - Space Sci Rev VL - 63 UR - https://doi.org/10.1007/BF00750770 DO - 10.1007/BF00750770 ID - Untiedt1993 ER - TY - JOUR AU - Vanhamäki, H. AU - Yoshikawa, A. AU - Amm, O. AU - Fujii, R. PY - 2012 DA - 2012// TI - Ionospheric joule heating and Poynting flux in quasi-static approximation JO - J Geophys Res ID - Vanhamäki2012 ER - TY - CHAP AU - Vasyliunas, V. ED - McCormac, B. M. PY - 1970 DA - 1970// TI - Mathematical models of magnetospheric convection and its coupling to the ionosphere BT - Particles and fields in the magnetosphere PB - Springer CY - Berlin UR - https://doi.org/10.1007/978-94-010-3284-1_6 DO - 10.1007/978-94-010-3284-1_6 ID - Vasyliunas1970 ER - TY - JOUR AU - Vasyliunas, V. M. PY - 1999 DA - 1999// TI - A note on current closure JO - J Geophys Res VL - 104 UR - https://doi.org/10.1029/1999JA900298 DO - 10.1029/1999JA900298 ID - Vasyliunas1999 ER - TY - JOUR AU - Vasyliunas, V. M. PY - 2007 DA - 2007// TI - The mechanical advantage of the magnetosphere: solar-wind-related forces in the magnetosphere-ionosphere-Earth system JO - Ann Geophys VL - 25 UR - https://doi.org/10.5194/angeo-25-255-2007 DO - 10.5194/angeo-25-255-2007 ID - Vasyliunas2007 ER - TY - JOUR AU - Vasyliunas, V. M. AU - Song, P. PY - 2005 DA - 2005// TI - Meaning of ionospheric Joule heating JO - J Geophys Res ID - Vasyliunas2005 ER - TY - BOOK AU - Vestine, E. H. AU - Laporte, L. AU - Lange, I. AU - Scott, W. E. PY - 1947 DA - 1947// TI - The geomagnetic field, its description and analysis PB - Carnegie Institution of Washington CY - Washington ID - Vestine1947 ER - TY - JOUR AU - Waters, C. L. AU - Anderson, B. J. AU - Liou, K. PY - 2001 DA - 2001// TI - Estimation of global field aligned currents using the iridium system magnetometer data JO - Geophys Res Lett VL - 28 UR - https://doi.org/10.1029/2000GL012725 DO - 10.1029/2000GL012725 ID - Waters2001 ER - TY - STD TI - Weimer DR (2000) A new technique for the mapping of ionospheric field-aligned currents from satellite magnetometer data. In: Ohtani S-I, Fujii R, Hesse M, Lysak RL (eds) Magnetospheric Current Systems. AGU geophysical monograph, vol 118. American Geophysical Union, Washington, pp 381–387 ID - ref55 ER - TY - JOUR AU - Weimer, D. PY - 2001 DA - 2001// TI - Maps of ionospheric field-aligned currents as a function of the interplanetary magnetic field derived from Dynamics Explorer 2 JO - J Geophys Res VL - 106 UR - https://doi.org/10.1029/2000JA000295 DO - 10.1029/2000JA000295 ID - Weimer2001 ER - TY - STD TI - Weimer DR (2005) Improved ionospheric electrodynamic models and application to calculating joule heating rates. J Geophys Res. doi:10.1029/2004JA010884 ID - ref57 ER - TY - JOUR AU - Weimer, D. R. AU - Clauer, C. R. AU - Engebretson, M. J. AU - Hansen, T. L. AU - Gleisner, H. AU - Mann, I. AU - Yumoto, K. PY - 2010 DA - 2010// TI - Statistical maps of geomagnetic perturbations as a function of the interplanetary magnetic field JO - J Geophys Res ID - Weimer2010 ER -