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Georgina Falster, Australian National University
Wednesday 24 April 2024, 17:30-19:00
Natural and forced behaviour of the Pacific Walker Circulation over the past 800 years
- đ¤ Speaker: Georgina Falster, Australian National University
- đ Date & Time: Wednesday 24 April 2024, 17:30 - 19:00
- đ Venue: Small Lecture Theatre, Department of Geography, Downing Site
Abstract
The Pacific Walker Circulation (PWC) is an important part of the global climate system, and affects weather and climate all over the world. However, our observational records of the climate system are too short to characterise the PWC âs long-term internal variability, as well as how the PWC responds to external forcings such as volcanic eruptions and anthropogenic forcings.
In this seminar I will share a reconstruction of the PWC âs behaviour over the past 800 years. I will outline how I calculated this reconstruction using a network of globally-distributed water isotope proxy records, as well as how I quantified uncertainties from different sources. I will share some new insights this reconstruction has allowed, including a close examination of the PWC âs response to both volcanic and anthropogenic forcing.
Series This talk is part of the Quaternary Discussion Group (QDG) series.
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