TY - JOUR A1 - Häkkilä, T. A1 - Verronen, P. T. A1 - Millán, L. A1 - Szeląg, M. E. A1 - Kalakoski, N. A1 - Kero, A. T1 - Odd hydrogen response thresholds for indication of solar proton and electron impact in the mesosphere and stratosphere JO - Ann. Geophys. J1 - ANGEO VL - 38 IS - 6 SP - 1299 EP - 1312 Y1 - 2020/12/22 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/38/1299/2020/ L1 - https://angeo.copernicus.org/articles/38/1299/2020/angeo-38-1299-2020.pdf DO - 10.5194/angeo-38-1299-2020 ER -