Constraining the timing, forcing, and climate impacts of volcanic eruptions during the Common Era and beyond ...
Volcanic eruptions can have climatic and societal impacts which, for major eruptions, may persist for several years after the event. Consequently, they are considered a key natural forcer in the climate system and reconstructions of volcanic forcing are an important input into climate models used fo...
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| Format: | Thesis |
| Language: | unknown |
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:unas
2024
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| Online Access: | https://dx.doi.org/10.48350/199862 https://boris.unibe.ch/199862/ |
| Summary: | Volcanic eruptions can have climatic and societal impacts which, for major eruptions, may persist for several years after the event. Consequently, they are considered a key natural forcer in the climate system and reconstructions of volcanic forcing are an important input into climate models used for future climate forecasting and policy decision making. Generating a robust record of past global volcanic eruptions is therefore essential, with the polar ice-core records a key archive in this process. However, eruption records are incomplete across the last 2000 years. This thesis presents a multi-proxy toolkit comprising of cryptotephra, sulfur isotopes, and novel glaciochemical tracers, which, when applied to ice-core records from Greenland and Antarctica, allowed the timing and forcing of volcanic eruptions during the Common Era to be constrained. Using this toolkit, smaller and prolonged volcanic events, currently absent from existing forcing reconstructions, were identified and attributed to their ... |
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