<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability"^^ . "Ice core records of 10Be basically offer a wide range of applications in climate research. However, atmospheric transport and deposition processes still hamper their straightforward interpretation. This work aims at establishing a climatological, data-based model attempt which allows for the first quantitative simulation of 10Be ice concentration on a time scale of several 10kyr. To this end, a global atmospheric multi-box model is configured for the simulation of aerosol-borne radionuclides using extensive observations of natural and artificial nuclides. Validation with short-lived 7Be reveals that the model is capable to simulate its spatio-temporal distribution in the global atmosphere, thereby providing insight into the respective circulation of 10Be. To simulate 10Be ice core records, the model is coupled to a basic air-firn-transfer module based on spatial 10Be variations in polar ice. The model results, driven by precipitation/accumulation rate changes as well as solar and geomagnetic activity, closely reproduce the main features of observations on the Holocene and 75kyr timescale. Regarding the latter, climate-related accumulation rate changes dominate the ice concentration imposing variations of up to 300%. In contrast, incomplete atmospheric mixing of 10Be dampens the geomagnetic modulation of 10Be at polar sites by up to 50% compared to the global atmospheric 10Be inventory. These findings basically challenge the use of ice core 10Be as proxy for past geomagnetic activity."^^ . "2013" . . . . . . . "Christoph"^^ . "Elsässer"^^ . "Christoph Elsässer"^^ . . . . . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability (PDF)"^^ . . . "Dissertation_Elsässer_2013.pdf"^^ . . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Exploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #16349 \n\nExploration of 10Be ice core records using a climatological model approach: Cosmogenic production versus climate variability\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .