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Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation

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Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation. / Gray, William Robert; Wills, Robert CJ; Rae, James William Buchanan; Burke, Andrea; Ivanovic, Ruza F; Roberts, William HG; Ferreira, David; Valdes, Paul J.

In: Geophysical Research Letters, Vol. 47, No. 6, e2019GL086328, 17.03.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Gray, WR, Wills, RCJ, Rae, JWB, Burke, A, Ivanovic, RF, Roberts, WHG, Ferreira, D & Valdes, PJ 2020, 'Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation', Geophysical Research Letters, vol. 47, no. 6, e2019GL086328. https://doi.org/10.1029/2019GL086328

APA

Gray, W. R., Wills, R. CJ., Rae, J. W. B., Burke, A., Ivanovic, R. F., Roberts, W. HG., Ferreira, D., & Valdes, P. J. (2020). Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation. Geophysical Research Letters, 47(6), [e2019GL086328]. https://doi.org/10.1029/2019GL086328

Vancouver

Gray WR, Wills RCJ, Rae JWB, Burke A, Ivanovic RF, Roberts WHG et al. Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation. Geophysical Research Letters. 2020 Mar 17;47(6). e2019GL086328. https://doi.org/10.1029/2019GL086328

Author

Gray, William Robert ; Wills, Robert CJ ; Rae, James William Buchanan ; Burke, Andrea ; Ivanovic, Ruza F ; Roberts, William HG ; Ferreira, David ; Valdes, Paul J. / Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation. In: Geophysical Research Letters. 2020 ; Vol. 47, No. 6.

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@article{59536cf240d34a799607d58672d1c08e,
title = "Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation",
abstract = "North Pacific atmospheric and oceanic circulations are key missing pieces in our understanding of the reorganisation of the global climate system since the Last Glacial Maximum (LGM). Here, using a basin‐wide compilation of planktic foraminiferal δ18O, we show that the North Pacific subpolar gyre extended ~3° further south during the LGM, consistent with sea surface temperature and productivity proxy data. Climate models indicate that the expansion of the subpolar gyre was associated with a substantial gyre strengthening, and that these gyre circulation changes were driven by a southward shift of the mid‐latitude westerlies and increased wind‐stress from the polar easterlies. Using single‐forcing model runs, we show that these atmospheric circulation changes are a non‐linear response to ice‐sheet topography/albedo, and CO2. Our reconstruction indicates that the gyre boundary (and thus westerly winds) began to migrate northward at ~16.5 ka, driving changes in ocean heat transport, biogeochemistry, and North American hydroclimate.",
keywords = "North Pacific, Deglaciation, Gyre circulation, Westerlies, Oxygen isotopes, Climate models",
author = "Gray, {William Robert} and Wills, {Robert CJ} and Rae, {James William Buchanan} and Andrea Burke and Ivanovic, {Ruza F} and Roberts, {William HG} and David Ferreira and Valdes, {Paul J}",
note = "Funding: UK Natural Environment Research Council (NERC) grant NE/N011716/1 (JWBR and AB). Tamaki Foundation, NASA (Grant NNX17AH56G), and NSF (Grant AGS-1929775) (RCJW). NERC Independent Research Fellowship NE/K008536/1 (RFI).",
year = "2020",
month = mar,
day = "17",
doi = "10.1029/2019GL086328",
language = "English",
volume = "47",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd.",
number = "6",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation

AU - Gray, William Robert

AU - Wills, Robert CJ

AU - Rae, James William Buchanan

AU - Burke, Andrea

AU - Ivanovic, Ruza F

AU - Roberts, William HG

AU - Ferreira, David

AU - Valdes, Paul J

N1 - Funding: UK Natural Environment Research Council (NERC) grant NE/N011716/1 (JWBR and AB). Tamaki Foundation, NASA (Grant NNX17AH56G), and NSF (Grant AGS-1929775) (RCJW). NERC Independent Research Fellowship NE/K008536/1 (RFI).

PY - 2020/3/17

Y1 - 2020/3/17

N2 - North Pacific atmospheric and oceanic circulations are key missing pieces in our understanding of the reorganisation of the global climate system since the Last Glacial Maximum (LGM). Here, using a basin‐wide compilation of planktic foraminiferal δ18O, we show that the North Pacific subpolar gyre extended ~3° further south during the LGM, consistent with sea surface temperature and productivity proxy data. Climate models indicate that the expansion of the subpolar gyre was associated with a substantial gyre strengthening, and that these gyre circulation changes were driven by a southward shift of the mid‐latitude westerlies and increased wind‐stress from the polar easterlies. Using single‐forcing model runs, we show that these atmospheric circulation changes are a non‐linear response to ice‐sheet topography/albedo, and CO2. Our reconstruction indicates that the gyre boundary (and thus westerly winds) began to migrate northward at ~16.5 ka, driving changes in ocean heat transport, biogeochemistry, and North American hydroclimate.

AB - North Pacific atmospheric and oceanic circulations are key missing pieces in our understanding of the reorganisation of the global climate system since the Last Glacial Maximum (LGM). Here, using a basin‐wide compilation of planktic foraminiferal δ18O, we show that the North Pacific subpolar gyre extended ~3° further south during the LGM, consistent with sea surface temperature and productivity proxy data. Climate models indicate that the expansion of the subpolar gyre was associated with a substantial gyre strengthening, and that these gyre circulation changes were driven by a southward shift of the mid‐latitude westerlies and increased wind‐stress from the polar easterlies. Using single‐forcing model runs, we show that these atmospheric circulation changes are a non‐linear response to ice‐sheet topography/albedo, and CO2. Our reconstruction indicates that the gyre boundary (and thus westerly winds) began to migrate northward at ~16.5 ka, driving changes in ocean heat transport, biogeochemistry, and North American hydroclimate.

KW - North Pacific

KW - Deglaciation

KW - Gyre circulation

KW - Westerlies

KW - Oxygen isotopes

KW - Climate models

U2 - 10.1029/2019GL086328

DO - 10.1029/2019GL086328

M3 - Article

VL - 47

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 6

M1 - e2019GL086328

ER -

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