The past years have seen a renaissance in applications of meteoric cosmogenic 10Be and the 10Be(meteoric)/9Be(stable) ratio in the terrestrial, oceanic, and helio-magneto-atmospheric realms. Terrestrial applications include quantifying soil residence times, dating of landforms such as moraines and sedimentary sections, soil mixing and transport, catchment-wide erosion, weathering and denudation rates as well as subglacial erosion. Marine applications include reconstructions of cosmogenic production rates, ocean water circulation, trace metal input and global paleo-weathering. Many of these applications rely on knowing the meteoric 10Be depositional flux, which is provided by marine and ice core/lake archives. Conversely, 10Be concentrations and the 10Be/9Be ratio are used to reconstruct changes in the meteoric 10Be depositional flux related to helio- and geomagnetic modulation of the cosmic ray flux. For a better quantitative understanding of these records, modelling-based approaches encompass atmospheric production and delivery models that include aerosol chemistry and transport models and state-of-the-art physics-based 10Be production functions.
This session invites a broad range of contributions surrounding meteoric 10Be, with the aim to bring together colleagues from these different communities to stimulate discussion and foster collaboration. The contributions may include, but are not limited to, the “model side” (e.g. construction of atmospheric production/delivery models, their downscaling, and inter-model comparison as well as comparison to observational data, systematics/laws of meteoric 10Be production and depositional flux, effects of geo- and heliomagnetic variations), and the “observational side”. This may include studies relying on either knowing the depositional flux, such as meteoric 10Be/9Be in terrestrial weathering and denudation, dating of landforms, or reconstructing the depositional flux from geomagnetic field observations or from terrestrial and marine archives, as well as oceanic applications.