E3S Web Conf.
Volume 196, 2020XI International Conference “Solar-Terrestrial Relations and Physics of Earthquake Precursors”
|Number of page(s)||7|
|Section||Atmosphere Physics and Solar-Terrestrial Relations|
|Published online||16 October 2020|
Energetic electron precipitation and their atmospheric effect
1 Department of Physics of Earth, Faculty of Physics, Saint Petersburg State University, Saint Petersburg, Russia
2 Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Karlsruhe, Germany
3 Physikalisch-Meteorologisches Observatorium World Radiation Center, Davos, IAC ETH, Zurich, Switzerland
* Corresponding author: email@example.com
Energetic particle precipitation induces ionization of the atmosphere which initiates a chain of reaction cycles affecting atmospheric composition and dynamics potentially down to surface weather systems. Ionization rates are retrieved based on yield functions or pre-calculated monoenergetic electron flux and energy spectra of precipitated energetic particles. Usually, information about energy spectra is obtained from satellites, balloons, and various ground-based observations. In all cases, some assumptions about spectral distribution for the entire energy range have to be made. As ionization rates are widely used in chemistry-climate models to estimate the atmospheric response to particle forcing, evaluation of the energy spectra is a key task in the solar-terrestrial studies. In this paper, it is shown that possible uncertainties of the ionization rates retrieval based on different spectral functions can lead to large disagreements in the ionization rates, with implications for the modelled response of atmospheric composition and dynamics to electron precipitation.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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