EGU21-2287
https://doi.org/10.5194/egusphere-egu21-2287
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Atmospheric production and transport of 7Be activity by cosmic rays: Modelling with the chemistry-climate model SOCOLv3.0 and comparison with direct measurements

Kseniia Golubenko1, Eugene Rozanov2,3, Genady Kovaltsov4, Ari-Pekka Leppänen5, and Ilya Usoskin1,6
Kseniia Golubenko et al.
  • 1Oulu university, Physics and astronomy, Oulu, Finland
  • 2Physikalisch-Meteorologisches Observatorium Davos and World Radiation Center, Davos Dorf, Switzerland
  • 3Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
  • 4Ioffe Physical-Technical Institute, St. Petersburg, Russia
  • 5Radiation and Nuclear Safety Authority, Rovaniemi, Finland
  • 6Sodankylä Geophysical Observatory, Sodankylä, Finland

We present the first results of modelling of the short-living cosmogenic isotope 7Be production, deposition, and transport using the chemistry-climate model SOCOLv3.0 aimed to study solar-terrestrial interactions and climate changes. We implemented an interactive deposition scheme,  based on gas tracers with and without nudging to the known meteorological fields. Production of 7Be was modelled using the 3D time-dependent Cosmic Ray induced Atmospheric Cascade (CRAC) model. The simulations were compared with the real concentrations (activity) and depositions measurements of 7Be in the air and water at Finnish stations. We have successfully reproduced and estimated the variability of the cosmogenic isotope 7Be produced by the galactic cosmic rays (GCR) on time scales longer than about a month, for the period of 2002–2008. The agreement between the modelled and measured data is very good (within 12%) providing a solid validation for the ability of the SOCOL CCM to reliably model production, transport, and deposition of cosmogenic isotopes, which is needed for precise studies of cosmic-ray variability in the past. 

How to cite: Golubenko, K., Rozanov, E., Kovaltsov, G., Leppänen, A.-P., and Usoskin, I.: Atmospheric production and transport of 7Be activity by cosmic rays: Modelling with the chemistry-climate model SOCOLv3.0 and comparison with direct measurements, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-2287, https://doi.org/10.5194/egusphere-egu21-2287, 2021.

Corresponding presentation materials formerly uploaded have been withdrawn.