TY - JOUR A1 - Baumgaertner, A. J. G. A1 - Seppälä, A. A1 - Jöckel, P. A1 - Clilverd, M. A. T1 - Geomagnetic activity related NOx enhancements and polar surface air temperature variability in a chemistry climate model: modulation of the NAM index JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 9 SP - 4521 EP - 4531 Y1 - 2011/05/12 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/11/4521/2011/ L1 - http://www.atmos-chem-phys.net/11/4521/2011/acp-11-4521-2011.pdf DO - 10.5194/acp-11-4521-2011 ER -