Dr MICHELA MARIANI MICHELA.MARIANI@NOTTINGHAM.AC.UK
Associate Professor
Coupling of the Intertropical Convergence Zone and Southern Hemisphere mid-latitude climate during the early to mid-Holocene
Mariani, Michela; Fletcher, Michael-Shawn; Drysdale, Russell N.; Saunders, Krystyna M.; Heijnis, Henk; Jacobsen, Geraldine; Zawadzki, Atun
Authors
Michael-Shawn Fletcher
Russell N. Drysdale
Krystyna M. Saunders
Henk Heijnis
Geraldine Jacobsen
Atun Zawadzki
Abstract
Conceptual models predict a tight coupling between the Intertropical Convergence Zone (ITCZ) and the Southern Westerly Winds (SWW) in response to glacial-interglacial transitions, yet little is known about this relationship under Holocene boundary conditions. Here we present a synthesis of Holocene pollen data from the southwest Pacific mid-latitudes that tracks changes in the SWW. Comparison of our SWW paleoclimate records with data tracking the ITCZ, oceanic circulation, and insolation reveals clearly synchronous and in-phase ITCZ-SWW dynamics between 12 and 5 ka, indicating a tight coupling between the tropics and southern mid-latitudes in response to ocean circulation and insolation. An apparent decoupling of the SWW and ITCZ in the Pacific region after 5 ka is attributable to the overriding influence of the El Niño–Southern Oscillation (ENSO) over the proxy data.
Citation
Mariani, M., Fletcher, M., Drysdale, R. N., Saunders, K. M., Heijnis, H., Jacobsen, G., & Zawadzki, A. (2017). Coupling of the Intertropical Convergence Zone and Southern Hemisphere mid-latitude climate during the early to mid-Holocene. Geology, 45(12), 1083-1086. https://doi.org/10.1130/G39705.1
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 14, 2017 |
Online Publication Date | Oct 27, 2017 |
Publication Date | Dec 20, 2017 |
Deposit Date | Feb 20, 2019 |
Publicly Available Date | Mar 28, 2024 |
Journal | Geology |
Print ISSN | 0091-7613 |
Electronic ISSN | 1943-2682 |
Publisher | Geological Society of America |
Peer Reviewed | Peer Reviewed |
Volume | 45 |
Issue | 12 |
Pages | 1083-1086 |
DOI | https://doi.org/10.1130/G39705.1 |
Public URL | https://nottingham-repository.worktribe.com/output/1573965 |
Publisher URL | https://pubs.geoscienceworld.org/gsa/geology/article/45/12/1083/519762/coupling-of-the-intertropical-convergence-zone-and |
Files
ITCZ SWW PAPER HOLOCENE REVISION V3 MM
(91 Kb)
Document
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