High resolution ice core records of climate variability and forcing ...
This thesis exploits the high temporal resolution and precise dating of ice cores from Law Dome, coastal East Antarctica, to address questions concerning climate forcings, variability and feedbacks over a range of timescales: (i) sub-annual to decadal-scale environmental influences on the \\(^{10}\\...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23206661.v1 https://figshare.utas.edu.au/articles/thesis/High_resolution_ice_core_records_of_climate_variability_and_forcing/23206661/1 |
| Summary: | This thesis exploits the high temporal resolution and precise dating of ice cores from Law Dome, coastal East Antarctica, to address questions concerning climate forcings, variability and feedbacks over a range of timescales: (i) sub-annual to decadal-scale environmental influences on the \\(^{10}\\)Be solar activity proxy; (ii) centennial to millennial-scale internal climate variability; and (iii) the phase relationship between Antarctic temperature and atmospheric CO\\(_2\\) during the last deglaciation. Cosmogenic \\(^{10}\\)Be is a primary ice core proxy for past solar activity. However, interpretation of the \\(^{10}\\)Be record is hindered by limited understanding of the physical processes governing its atmospheric transport and deposition to the ice sheets. The thesis presents a suite of monthly to annually-resolved Law Dome \\(^{10}\\)Be records, which combined span 1936-2009. The records are quantitatively assessed against observed cosmic ray intensities, instrumental and reanalysis climate data and ... |
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