HOW DO THE SOUTHERN WESTERLY WINDS RESPOND TO RAPID CLIMATIC CHANGE?

Grant number: IN170100062 | Funding period: 2017 - 2020

Completed

Abstract

This project aims to produce high quality data on how the Southern Westerly Winds (SWW) respond to largescale changes in climate boundary conditions over multiple glacial-interglacial cycles. Because the SWW are key drivers of Southern Hemisphere climate, Southern Ocean circulation and global carbon dioxide concentrations, it is important to understand how they respond to changes in boundary conditions. Uncertainty about how they do so limits attempts at accurate predictive climate modelling. This project will test conceptual models of SWW dynamics and provide essential boundary conditions for predictive climate models. The project intends to simultaneously build and support a research capac..

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Related publications (10)

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Chronostratigraphy of sediment cores from Lake Selina, southeastern Australia: Radiocarbon, optically stimulated luminescence, paleomagnetism, authigenic beryllium isotopes and elemental data

Agathe Lise-Pronovost, Michael-Shawn Fletcher, Quentin Simon, Zenobia Jacobs, Patricia S Gadd, Andy IR Herries, Yusuke Yokoyama, Aster Team

2022-04-15

This Data in Brief paper comprises dataset obtained for sediment cores collected from Lake Selina, located in the West Coast Range..

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Northward shift of the southern westerlies during the Antarctic Cold Reversal

Michael-Shawn Fletcher, Joel Pedro, Tegan Hall, Michela Mariani, Joseph A Alexander, Kristen Beck, Maarten Blaauw, Dominic A Hodgson, Henk Heijnis, Patricia S Gadd, Agathe Lise-Pronovost

2021-09-23

Inter-hemispheric asynchrony of climate change through the last deglaciation has been theoretically linked to latitudinal shifts i..

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Chronostratigraphy of a 270-ka sediment record from Lake Selina, Tasmania: Combining radiometric, geomagnetic and climatic dating

Agathe Lise-Pronovost, Michael-Shawn Fletcher, Quentin Simon, Zenobia Jacobs, Patricia S Gadd, David Hestop, Andy IR Herries, Yusuke Yokoyama, Aster Team

2021-02-09

Lake sediment archives covering several glacial cycles are scarce in the Southern Hemisphere and they are challenging to date. Her..

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The role of species composition in the emergence of alternate vegetation states in a temperate rainforest system

Michael-Shawn Fletcher, Haidee R Cadd, Michela Mariani, Tegan L Hall, Samuel W Wood

2020-10-16

Context Forest systems are dynamic and can alternate between alternative stable states in response to climate, disturbance and int..

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How significant is atmospheric metal contamination from mining activity adjacent to the Tasmanian Wilderness World Heritage Area? A spatial analysis of metal concentrations using air trajectories models

Larissa Schneider, Michela Mariani, Krystyna M Saunders, William A Maher, Jennifer J Harrison, Michael-Shawn Fletcher, Atun Zawadzki, Henk Heijnis, Simon G Haberle

2019-03-15

This study investigated metal contamination from historical mining in lakes in the Tasmanian Wilderness World Heritage Area (TWWHA..

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Scientific Drilling of Sediments at Darwin Crater, Tasmania

A Lise-Pronovost, Michael Shawn Fletcher, Tom Mallett, Michela Mariani, Richard Lewis, Patricia Gadd, Andy IR Herries, Maarten Blaauw, Hendrik Heijnis, Dominic A Hodgson, Joel B Pedro

2018-06-12

A 70 m long continental sediment record was recovered at Darwin Crater in western Tasmania, Australia. The sediment succession inc..

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Centennial-scale trends in the Southern Annular Mode revealed by hemisphere-wide fire and hydroclimatic trends over the past 2400 years

Michael-Shawn Fletcher, Alexa Benson, David MJS Bowman, Patricia S Gadd, Hendrik Heijnis, Michela Mariani, Krystyna M Saunders, Brent B Wolfe, Atun Zawadzki

2018-04-01

Millennial-scale latitudinal shifts in the southern westerly winds (SWW) drive changes in Southern Ocean upwelling, leading to cha..

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The indirect response of an aquatic ecosystem to long-term climate-driven terrestrial vegetation in a subalpine temperate lake

K Beck, M-S Fletcher, G Kattel, LA Barry, PS Gadd, H Heijnis, KS Jacobsen

2018-03-01

Aim To assess whether climate directly influences aquatic ecosystem dynamics in the temperate landscape of Tasmania or whether the..

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The changing role of fire in conifer-dominated temperate rainforest through the last 14,000 years

M-S Fletcher, DMJS Bowman, C Whitlock, M Mariani, L Stahle

2018-02-15

Climate, fire and vegetation dynamics are often tightly coupled through time. Here, we use a 14 kyr sedimentary charcoal and polle..

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Coupling of the Intertropical Convergence Zone and Southern Hemisphere mid-latitude climate during the early to mid-Holocene

Michela Mariani, Michael-Shawn Fletcher, Russell N Drysdale, Krystyna M Saunders, Henk Heijnis, Geraldine Jacobsen, Atun Zawadzki

2017-12-01

Conceptual models predict a tight coupling between the Intertropical Convergence Zone (ITCZ) and the Southern Westerly Winds (SWW)..