TY - JOUR A1 - Kirkwood, S. A1 - Belova, E. A1 - Dalin, P. A1 - Mihalikova, M. A1 - Mikhaylova, D. A1 - Murtagh, D. A1 - Nilsson, H. A1 - Satheesan, K. A1 - Urban, J. A1 - Wolf, I. T1 - Response of polar mesosphere summer echoes to geomagnetic disturbances in the Southern and Northern Hemispheres: the importance of nitric oxide JO - Ann. Geophys. J1 - ANGEO VL - 31 IS - 2 SP - 333 EP - 347 Y1 - 2013/02/27 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/31/333/2013/ L1 - https://angeo.copernicus.org/articles/31/333/2013/angeo-31-333-2013.pdf DO - 10.5194/angeo-31-333-2013 ER -