TY - JOUR A1 - Pulkkinen, A. A1 - Thomson, A. A1 - Clarke, E. A1 - McKay, A. T1 - April 2000 geomagnetic storm: ionospheric drivers of large geomagnetically induced currents JO - Ann. Geophys. J1 - ANGEO VL - 21 IS - 3 SP - 709 EP - 717 Y1 - 2003/03/31 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/21/709/2003/ L1 - https://angeo.copernicus.org/articles/21/709/2003/angeo-21-709-2003.pdf DO - 10.5194/angeo-21-709-2003 ER -