Modelling the effects of the October 1989 solar proton event on mesospheric odd nitrogen using a detailed ion and neutral chemistry model

by P. T. Verronen, P. T. Verronen, E. Turunen, Th. Ulich, E. Kyrölä
Published 2002-12-01

Analysis and parameterisation of ionic reactions affecting middle atmospheric HO_x and NO_y during solar proton events

by P. T. Verronen, R. Lehmann
Published 2013-05-01

Odd hydrogen response thresholds for indication of solar proton and electron impact in the mesosphere and stratosphere

by T. Häkkilä, P. T. Verronen, P. T. Verronen, L. Millán, M. E. Szeląg, N. Kalakoski, A. Kero
Published 2020-12-01

Magnetic-local-time dependency of radiation belt electron precipitation: impact on ozone in the polar middle atmosphere

by P. T. Verronen, P. T. Verronen, D. R. Marsh, D. R. Marsh, M. E. Szeląg, N. Kalakoski
Published 2020-07-01

Is there a direct solar proton impact on lower-stratospheric ozone?

by J. Jia, A. Kero, N. Kalakoski, M. E. Szeląg, M. E. Szeląg, P. T. Verronen, P. T. Verronen
Published 2020-12-01

Influence of a Carrington-like event on the atmospheric chemistry, temperature and dynamics

by M. Calisto, P. T. Verronen, E. Rozanov, T. Peter
Published 2012-09-01

Technical Note: Continuity of MIPAS-ENVISAT operational ozone data quality from full- to reduced-spectral-resolution operation mode

by S. Ceccherini, U. Cortesi, P. T. Verronen, E. Kyrölä
Published 2008-04-01

Simulated seasonal impact on middle atmospheric ozone from high-energy electron precipitation related to pulsating aurorae

by P. T. Verronen, P. T. Verronen, A. Kero, N. Partamies, N. Partamies, M. E. Szeląg, S.-I. Oyama, Y. Miyoshi, E. Turunen
Published 2021-10-01

Sunset transition of negative charge in the D-region ionosphere during high-ionization conditions

by P. T. Verronen, Th. Ulich, E. Turunen, C. J. Rodger
Published 2006-03-01

Statistical response of middle atmosphere composition to solar proton events in WACCM-D simulations: the importance of lower ionospheric chemistry

by N. Kalakoski, P. T. Verronen, P. T. Verronen, A. Seppälä, M. E. Szeląg, M. E. Szeląg, A. Kero, D. R. Marsh, D. R. Marsh
Published 2020-07-01

Statistical response of middle atmosphere composition to solar proton events in WACCM-D simulations: the importance of lower ionospheric chemistry

by N. Kalakoski, P. T. Verronen, P. T. Verronen, A. Seppälä, M. E. Szeląg, M. E. Szeląg, A. Kero, D. R. Marsh, D. R. Marsh
Published 2020-07-01

Statistical response of middle atmosphere composition to solar proton events in WACCM-D simulations: the importance of lower ionospheric chemistry

by N. Kalakoski, P. T. Verronen, P. T. Verronen, A. Seppälä, M. E. Szeląg, M. E. Szeląg, A. Kero, D. R. Marsh, D. R. Marsh
Published 2020-07-01

Longitudinal hotspots in the mesospheric OH variations due to energetic electron precipitation

by M. E. Andersson, P. T. Verronen, C. J. Rodger, M. A. Clilverd, S. Wang
Published 2014-01-01

Latitudinal extent of the January 2005 solar proton event in the Northern Hemisphere from satellite observations of hydroxyl

by P. T. Verronen, C. J. Rodger, M. A. Clilverd, H. M. Pickett, E. Turunen
Published 2007-11-01

Middle atmospheric ozone, nitrogen dioxide and nitrogen trioxide in 2002–2011: SD-WACCM simulations compared to GOMOS observations

by E. Kyrölä, M. E. Andersson, P. T. Verronen, M. Laine, S. Tukiainen, D. R. Marsh
Published 2018-04-01

Simulation study for ground-based Ku-band microwave observations of ozone and hydroxyl in the polar middle atmosphere

by D. A. Newnham, M. A. Clilverd, M. Kosch, M. Kosch, A. Seppälä, P. T. Verronen
Published 2019-03-01

Polar-night O₃, NO₂ and NO₃ distributions during sudden stratospheric warmings in 2003–2008 as seen by GOMOS/Envisat

by E. Kyrölä, P. T. Verronen, S.-M. Päivärinta, N. Kalakoski, V. F. Sofieva, L. Backman, J. Tamminen
Published 2012-01-01

Mesosphere-to-stratosphere descent of odd nitrogen in February–March 2009 after sudden stratospheric warming

by S.-M. Salmi, P. T. Verronen, L. Thölix, E. Kyrölä, L. Backman, A. Yu. Karpechko, A. Seppälä
Published 2011-05-01

The atmospheric implications of radiation belt remediation

by C. J. Rodger, M. A. Clilverd, Th. Ulich, P. T. Verronen, E. Turunen, N. R. Thomson
Published 2006-08-01

Retrieval of ozone profiles from GOMOS limb scattered measurements

by S. Tukiainen, E. Kyrölä, P. T. Verronen, D. Fussen, L. Blanot, G. Barrot, A. Hauchecorne, N. Lloyd
Published 2011-04-01