globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.12.017
Scopus记录号: 2-s2.0-85010369686
论文题名:
Reconstructing atmospheric circulation over southern New Zealand: Establishment of modern westerly airflow 5500 years ago and implications for Southern Hemisphere Holocene climate change
作者: Turney C.S.M.; Wilmshurst J.M.; Jones R.T.; Wood J.R.; Palmer J.G.; Hogg A.G.; Fenwick P.; Crowley S.F.; Privat K.; Thomas Z.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 159
起始页码: 77
结束页码: 87
语种: 英语
英文关键词: Jet stream ; Roaring Forties ; Southern Annular Mode (SAM) ; Southern Hemisphere westerly winds ; Southern Ocean ; Wind-blown sediments
Scopus关键词: Climatology ; Complex networks ; Fighter aircraft ; Meteorology ; Wind ; Jet streams ; Roaring Forties ; Southern Annular Mode ; Southern ocean ; Westerly winds ; Climate change ; airflow ; Arctic Oscillation ; atmospheric circulation ; climate variation ; expansion ; Holocene ; jet stream ; oceanic circulation ; paleoclimate ; proxy climate record ; reconstruction ; Southern Hemisphere ; vegetation dynamics ; westerly ; wind forcing ; Auckland ; Fiordland ; New Zealand ; North Island ; Pacific Ocean ; Pacific Ocean (East) ; South Island ; Southern Ocean ; Southland ; Stewart Island
英文摘要: Late-twentieth century changes in the intensity and migration of Southern Hemisphere westerly winds have been implicated in spatially complex variability in atmospheric and ocean circulation, and ice-sheet dynamics, across the mid- to high-latitudes. A major uncertainty, however, is whether present day hemispheric-wide symmetrical airflow is representative of past behaviour. Here we report a multi-proxy study from Stewart Island and southern Fiordland, New Zealand (46–47°S) reconstructing Holocene changes at the northern limit of westerly airflow. Increased minerogenic input and a pronounced shift in cool-loving vegetation around 5500 years ago is consistent with the establishment of westerly airflow at this latitude in the southwest Pacific. In marked contrast, stronger winds are reported further south over the subantarctic Auckland (50°S) and Campbell (52°S) Islands from 8000 years ago. Intriguingly, reconstructions from the east Pacific suggest a weakening of core westerly airflow after 8500 years ago, but an expansion along the northern limits sometime after 5500 years ago. Our results suggest similar atmospheric circulation changes have been experienced in the Pacific since 5500 years ago, but indicate an expanded network of sites is needed to comprehensively test the driver(s) and impact(s) of Holocene mid-latitude westerly winds across the Southern Hemisphere. © 2016 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59308
Appears in Collections:过去全球变化的重建

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作者单位: Palaeontology Geobiology and Earth Archives Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia; Climate Change Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia; Long Term Ecology Laboratory, Landcare Research, PO Box 69040, Lincoln, New Zealand; School of Environment, University of Auckland, Private Bag 92019, Auckland, New Zealand; Department of Geography, Exeter University, Devon, United Kingdom; Waikato Radiocarbon Laboratory, University of Waikato, Private Bag 3105, Hamilton, New Zealand; Gondwana Tree-Ring Laboratory, PO Box 14, Little River, Canterbury, New Zealand; Department of Earth and Ocean Sciences, University of Liverpool, Liverpool, United Kingdom; Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Australia

Recommended Citation:
Turney C.S.M.,Wilmshurst J.M.,Jones R.T.,et al. Reconstructing atmospheric circulation over southern New Zealand: Establishment of modern westerly airflow 5500 years ago and implications for Southern Hemisphere Holocene climate change[J]. Quaternary Science Reviews,2017-01-01,159
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