P. Arsenovic, E. Rozanov, A. Stenke, B. Funke, J.M. Wissing, K. Mursula, F. Tummon, T. Peter, The influence of Middle Range Energy Electrons on atmospheric chemistry and regional climate, Journal of Atmospheric and Solar-Terrestrial Physics, Volume 149, 2016, Pages 180-190, ISSN 1364-6826, https://doi.org/10.1016/j.jastp.2016.04.008
The influence of Middle Range Energy Electrons on atmospheric chemistry and regional climate
|Author:||Arsenovic, P.1; Rozanov, E.1,2; Stenke, A.1;|
1Institute for Atmospheric and Climate Science ETH, Zürich, Switzerland
2Physikalisch-Meteorologisches Observatorium Davos – World Radiation Center, Davos, Switzerland
3Instituto de Astrofisica de Andalucia, CSIC, Granada, Spain
4Universität Osnabrück, Lower Saxony, Germany
5ReSoLVE Centre of Excellence, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 4.7 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019100230972
|Publish Date:|| 2019-10-02
We investigate the influence of Middle Range Energy Electrons (MEE; typically 30–300 keV) precipitation on the atmosphere using the SOCOL3-MPIOM chemistry-climate model with coupled ocean. Model simulations cover the 2002–2010 period for which ionization rates from the AIMOS dataset and atmospheric composition observations from MIPAS are available. Results show that during geomagnetically active periods MEE significantly increase the amount of NOy and HOx in the polar winter mesosphere, in addition to other particles and sources, resulting in local ozone decreases of up to 35%. These changes are followed by an intensification of the polar night jet, as well as mesospheric warming and stratospheric cooling. The contribution of MEE also substantially enhances the difference in the ozone anomalies between geomagnetically active and quiet periods. Comparison with MIPAS NOy observations indicates that the additional source of NOy from MEE improves the model results, however substantial underestimation above 50 km remains and requires better treatment of the NOy source from the thermosphere. A surface air temperature response is detected in several regions, with the most pronounced warming occurring in the Antarctic during austral winter. Surface warming of up to 2 K is also seen over continental Asia during boreal winter.
Journal of atmospheric and solar-terrestrial physics
|Pages:||180 - 190|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
115 Astronomy and space science
This work has been supported by the Swiss National Science Foundation under Grant CRSII2-147659 (FUPSOL II). F. Tummon has been supported by the Swiss National Science Foundation under Project 20FI21_138017. This work is a part of ROSMIC WG1 activity within the SCOSTEP VarSITI program. We would also like to acknowledge the financial support by the Academy of Finland to the ReSoLVE Centre of Excellence (project no. 272157).
|Academy of Finland Grant Number:||
272157 (Academy of Finland Funding decision)
© 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).