Brief communication: Changing mid-twentieth century Antarctic sea ice variability linked to tropical forcing
- 1Climate Change Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 2Palaeontology, Geobiology and Earth Archives Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 3Australian Antarctic Division, 203 Channel Highway, Kingston 7050, Tasmania, Australia
- 4Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania 7001
- 5Earth System Science and Departement Geografie, Vrije Universiteit Brussels, Belgium
- 6Université catholique de Louvain, Earth and Life Institute, Georges Lemaître Centre for Earth and Climate Research, Place Pasteur, 3, 1348 Louvain-la-Neuve, Belgium
- 7Cryospheric Sciences Laboratory/Code 615, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
- 8Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
- 9Physical Sciences Division, Earth System Research Laboratory, NOAA, Boulder, CO 80305, USA
- 10Meteorologist at the Antarctic Meteorological Research Center, Space Science and Engineering Center, University of Wisconsin–Madison, Madison, WI, USA
- 11Department of Physical Sciences, School of Arts and Sciences, Madison Area Technical College, Madison, WI, USA
- 12Met Office Hadley Centre, Exeter, UK
- 13Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 14Sydney Institute of Marine Science, Chowder Bay Road, Mosman NSW 2088, Australia
- 15Centre for Bio-Innovation Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 1Climate Change Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 2Palaeontology, Geobiology and Earth Archives Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 3Australian Antarctic Division, 203 Channel Highway, Kingston 7050, Tasmania, Australia
- 4Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania 7001
- 5Earth System Science and Departement Geografie, Vrije Universiteit Brussels, Belgium
- 6Université catholique de Louvain, Earth and Life Institute, Georges Lemaître Centre for Earth and Climate Research, Place Pasteur, 3, 1348 Louvain-la-Neuve, Belgium
- 7Cryospheric Sciences Laboratory/Code 615, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
- 8Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
- 9Physical Sciences Division, Earth System Research Laboratory, NOAA, Boulder, CO 80305, USA
- 10Meteorologist at the Antarctic Meteorological Research Center, Space Science and Engineering Center, University of Wisconsin–Madison, Madison, WI, USA
- 11Department of Physical Sciences, School of Arts and Sciences, Madison Area Technical College, Madison, WI, USA
- 12Met Office Hadley Centre, Exeter, UK
- 13Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
- 14Sydney Institute of Marine Science, Chowder Bay Road, Mosman NSW 2088, Australia
- 15Centre for Bio-Innovation Science, School of Biological, Earth and Environmental Sciences, University of New South Wales, Australia
Abstract. Satellite observations demonstrate Antarctic sea ice extent increased between late-1978 and 2015, with significant spatial and seasonal variability. Late spring retreat off George V Land is a major component of the observed increase, but the paucity of proxy records makes interpretation of trends (and impacts) challenging. Here Earth-system modelling and reanalysis demonstrate tropical Pacific warming can trigger an atmospheric Rossby wave response during the austral spring, delaying sea-ice retreat off George V Land. Our results provide new insights into the spatial and temporal role low latitudes play in Antarctic sea-ice production, drift and ocean circulation on decadal to centennial timescales.
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Chris S.~M. Turney et al.


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SC1: 'Rossby waves and the PSA', Terence O'Kane, 10 May 2017
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AC1: 'Reply to review', Christian Turney, 19 Jul 2017
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AC1: 'Reply to review', Christian Turney, 19 Jul 2017
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RC1: 'Review of Turney et al. 2017', Anonymous Referee #1, 23 May 2017
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AC2: 'Reply to review', Christian Turney, 19 Jul 2017
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AC2: 'Reply to review', Christian Turney, 19 Jul 2017
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RC2: 'Referee comments to the paper: Brief communication: Changing mid-twentieth century Antarctic sea ice variability linked to tropical forcing', Anonymous Referee #2, 30 May 2017
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AC3: 'Reply to review', Christian Turney, 19 Jul 2017
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AC3: 'Reply to review', Christian Turney, 19 Jul 2017


-
SC1: 'Rossby waves and the PSA', Terence O'Kane, 10 May 2017
-
AC1: 'Reply to review', Christian Turney, 19 Jul 2017
-
AC1: 'Reply to review', Christian Turney, 19 Jul 2017
-
RC1: 'Review of Turney et al. 2017', Anonymous Referee #1, 23 May 2017
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AC2: 'Reply to review', Christian Turney, 19 Jul 2017
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AC2: 'Reply to review', Christian Turney, 19 Jul 2017
-
RC2: 'Referee comments to the paper: Brief communication: Changing mid-twentieth century Antarctic sea ice variability linked to tropical forcing', Anonymous Referee #2, 30 May 2017
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AC3: 'Reply to review', Christian Turney, 19 Jul 2017
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AC3: 'Reply to review', Christian Turney, 19 Jul 2017
Chris S.~M. Turney et al.
Chris S.~M. Turney et al.
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