TY - JOUR A1 - Stauning, P. T1 - A critical note on the IAGA-endorsed Polar Cap index procedure: effects of solar wind sector structure and reverse polar convection JO - Ann. Geophys. J1 - ANGEO VL - 33 IS - 11 SP - 1443 EP - 1455 Y1 - 2015/11/30 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/33/1443/2015/ L1 - https://angeo.copernicus.org/articles/33/1443/2015/angeo-33-1443-2015.pdf DO - 10.5194/angeo-33-1443-2015 ER -