An overview of available models for simulations of the life cycle of cosmogenic isotopes

Measurements of the cosmogenic isotope concentrations in the natural archives are valuable sources of information about the variability of solar activity and parameters of explosive events in the solar system and our galaxy. The retrieval and understanding of the forcing peculiarities from the data requires detailed modeling of all relevant processes. Therefore, any applied model should be able to treat the production, transport, chemical transformation, and deposition of cosmogenic isotopes and atmospheric state parameters regulating their life cycle. A hierarchy of such models ranging from simple box models to full-scale Erath system models has been developed and utilized since 1990th. This lecture will briefly present the critical turning points in model development. Then I will discuss contemporary approaches to simulate the transport, chemistry, mixing, and deposition of different cosmogenic isotopes produced by galactic cosmic rays and solar proton events and the most promising ways of further development. Special attention will be paid to the influence of volcanic eruptions and integrating ¹⁰Be modeling with other species such as ³⁶Cl and ¹⁴C.

Acknowledgement: Support from Oulu University (Project GERACLIS #24304650) and collaborative Swiss French project AEON (grant no. 200020E_219166).