Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene
ABSTRACT The strength and latitudinal position of the southern westerly winds (SWW) influence mid‐latitude precipitation and carbon cycling in the Southern Ocean. Despite the important role the westerlies play in the global climate system, past variability is poorly constrained. Here, we present a g...
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crwiley:10.1002/jqs.3045 2024-06-02T07:58:36+00:00 Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene Anderson, Harris J. Moy, Christopher M. Vandergoes, Marcus J. Nichols, Jonathan E. Riesselman, Christina R. Van Hale, Robert Royal Society of New Zealand 2018 http://dx.doi.org/10.1002/jqs.3045 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.3045 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3045 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 33, issue 6, page 689-701 ISSN 0267-8179 1099-1417 journal-article 2018 crwiley https://doi.org/10.1002/jqs.3045 2024-05-03T10:49:46Z ABSTRACT The strength and latitudinal position of the southern westerly winds (SWW) influence mid‐latitude precipitation and carbon cycling in the Southern Ocean. Despite the important role the westerlies play in the global climate system, past variability is poorly constrained. Here, we present a geochemical record of hydroclimate change from Lake Von in south‐west New Zealand that spans the last 16 000 years. During the Lateglacial and early Holocene, we find stratigraphic and geochemical evidence for three distinct periods of low lake levels that occur during North Atlantic cold events when the Intertropical Convergence Zone is displaced southwards, Southern Ocean upwelling is enhanced and the Antarctic is rapidly warming. We attribute these hydrological changes to southward shifts of the SWW and associated storm tracks that cause arid conditions in southern New Zealand. During the early Holocene, we find evidence for an extended period of low lake levels that are caused by a combination of diminished wind strength, higher air temperatures and reduced seasonality. Finally, we interpret an overall intensification of the SWW after 5500 cal a bp. Our results support the idea that climate mechanisms originating in the high latitudes and the tropics work together to influence the SWW on millennial timescales. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Southern Ocean Wiley Online Library Antarctic Low Lake ENVELOPE(142.677,142.677,-66.993,-66.993) New Zealand Southern Ocean The Antarctic Journal of Quaternary Science 33 6 689 701 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
ABSTRACT The strength and latitudinal position of the southern westerly winds (SWW) influence mid‐latitude precipitation and carbon cycling in the Southern Ocean. Despite the important role the westerlies play in the global climate system, past variability is poorly constrained. Here, we present a geochemical record of hydroclimate change from Lake Von in south‐west New Zealand that spans the last 16 000 years. During the Lateglacial and early Holocene, we find stratigraphic and geochemical evidence for three distinct periods of low lake levels that occur during North Atlantic cold events when the Intertropical Convergence Zone is displaced southwards, Southern Ocean upwelling is enhanced and the Antarctic is rapidly warming. We attribute these hydrological changes to southward shifts of the SWW and associated storm tracks that cause arid conditions in southern New Zealand. During the early Holocene, we find evidence for an extended period of low lake levels that are caused by a combination of diminished wind strength, higher air temperatures and reduced seasonality. Finally, we interpret an overall intensification of the SWW after 5500 cal a bp. Our results support the idea that climate mechanisms originating in the high latitudes and the tropics work together to influence the SWW on millennial timescales. |
author2 |
Royal Society of New Zealand |
format |
Article in Journal/Newspaper |
author |
Anderson, Harris J. Moy, Christopher M. Vandergoes, Marcus J. Nichols, Jonathan E. Riesselman, Christina R. Van Hale, Robert |
spellingShingle |
Anderson, Harris J. Moy, Christopher M. Vandergoes, Marcus J. Nichols, Jonathan E. Riesselman, Christina R. Van Hale, Robert Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene |
author_facet |
Anderson, Harris J. Moy, Christopher M. Vandergoes, Marcus J. Nichols, Jonathan E. Riesselman, Christina R. Van Hale, Robert |
author_sort |
Anderson, Harris J. |
title |
Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene |
title_short |
Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene |
title_full |
Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene |
title_fullStr |
Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene |
title_full_unstemmed |
Southern Hemisphere westerly wind influence on southern New Zealand hydrology during the Lateglacial and Holocene |
title_sort |
southern hemisphere westerly wind influence on southern new zealand hydrology during the lateglacial and holocene |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/jqs.3045 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.3045 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3045 |
long_lat |
ENVELOPE(142.677,142.677,-66.993,-66.993) |
geographic |
Antarctic Low Lake New Zealand Southern Ocean The Antarctic |
geographic_facet |
Antarctic Low Lake New Zealand Southern Ocean The Antarctic |
genre |
Antarc* Antarctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean |
op_source |
Journal of Quaternary Science volume 33, issue 6, page 689-701 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.3045 |
container_title |
Journal of Quaternary Science |
container_volume |
33 |
container_issue |
6 |
container_start_page |
689 |
op_container_end_page |
701 |
_version_ |
1800742010052673536 |