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Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals

Research output: Contribution to journalArticle

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Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals. / Charrassin, J B; Hindell, M; Rintoul, S R; Roquet, F; Sokolov, S; Biuw, M; Costa, D; Boehme, Lars; Lovell, P; Coleman, R; Timmermann, R; Meijers, A; Meredith, M; Park, Y H; Bailleul, F; Goebel, M; Tremblay, Y; Bost, C A; McMahon, C R; Field, IC; Fedak, Michael Andre; Guinet, C.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 105, No. 33, 19.08.2008, p. 11634-11639.

Research output: Contribution to journalArticle

Harvard

Charrassin, JB, Hindell, M, Rintoul, SR, Roquet, F, Sokolov, S, Biuw, M, Costa, D, Boehme, L, Lovell, P, Coleman, R, Timmermann, R, Meijers, A, Meredith, M, Park, YH, Bailleul, F, Goebel, M, Tremblay, Y, Bost, CA, McMahon, CR, Field, IC, Fedak, MA & Guinet, C 2008, 'Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals' Proceedings of the National Academy of Sciences of the United States of America, vol. 105, no. 33, pp. 11634-11639. https://doi.org/10.1073/pnas.0800790105

APA

Charrassin, J. B., Hindell, M., Rintoul, S. R., Roquet, F., Sokolov, S., Biuw, M., ... Guinet, C. (2008). Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals. Proceedings of the National Academy of Sciences of the United States of America, 105(33), 11634-11639. https://doi.org/10.1073/pnas.0800790105

Vancouver

Charrassin JB, Hindell M, Rintoul SR, Roquet F, Sokolov S, Biuw M et al. Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals. Proceedings of the National Academy of Sciences of the United States of America. 2008 Aug 19;105(33):11634-11639. https://doi.org/10.1073/pnas.0800790105

Author

Charrassin, J B ; Hindell, M ; Rintoul, S R ; Roquet, F ; Sokolov, S ; Biuw, M ; Costa, D ; Boehme, Lars ; Lovell, P ; Coleman, R ; Timmermann, R ; Meijers, A ; Meredith, M ; Park, Y H ; Bailleul, F ; Goebel, M ; Tremblay, Y ; Bost, C A ; McMahon, C R ; Field, IC ; Fedak, Michael Andre ; Guinet, C. / Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals. In: Proceedings of the National Academy of Sciences of the United States of America. 2008 ; Vol. 105, No. 33. pp. 11634-11639.

Bibtex - Download

@article{7f10e71bc6fa434dac664c98695821f6,
title = "Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals",
abstract = "Polar regions are particularly sensitive to climate change, with the potential for significant feedbacks between ocean circulation, sea ice, and the ocean carbon cycle. However, the difficulty in obtaining in situ data means that our ability to detect and interpret change is very limited, especially in the Southern Ocean, where the ocean beneath the sea ice remains almost entirely unobserved and the rate of sea-ice formation is poorly known. Here, we show that southern elephant seals (Mirounga leonina) equipped with oceanographic sensors can measure ocean structure and water mass changes in regions and seasons rarely observed with traditional oceanographic platforms. In particular, seals provided a 30-fold increase in hydrographic profiles from the sea-ice zone, allowing the major fronts to be mapped south of 60 degrees S and sea-ice formation rates to be inferred from changes in upper ocean salinity. Sea-ice production rates peaked in early winter (April-May) during the rapid northward expansion of the pack ice and declined by a factor of 2 to 3 between May and August, in agreement with a three-dimensional coupled ocean-sea-ice model. By measuring the high-latitude ocean during winter, elephant seals fill a {"}blind spot{"} in our sampling coverage, enabling the establishment of a truly global ocean-observing system.",
keywords = "antarctic circumpolar current, instrumentation, marine predators, ocean observation, sea-ice modeling, ANTARCTIC CIRCUMPOLAR CURRENT, OCEANOGRAPHIC CONDITIONS, EAST ANTARCTICA, WEDDELL SEA, SALINITY, EXTENT, WINTER, COVER, FIELD",
author = "Charrassin, {J B} and M Hindell and Rintoul, {S R} and F Roquet and S Sokolov and M Biuw and D Costa and Lars Boehme and P Lovell and R Coleman and R Timmermann and A Meijers and M Meredith and Park, {Y H} and F Bailleul and M Goebel and Y Tremblay and Bost, {C A} and McMahon, {C R} and IC Field and Fedak, {Michael Andre} and C Guinet",
year = "2008",
month = "8",
day = "19",
doi = "10.1073/pnas.0800790105",
language = "English",
volume = "105",
pages = "11634--11639",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "NATL ACAD SCIENCES",
number = "33",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Southern Ocean frontal structure and sea-ice formation rates revealed by elephant seals

AU - Charrassin, J B

AU - Hindell, M

AU - Rintoul, S R

AU - Roquet, F

AU - Sokolov, S

AU - Biuw, M

AU - Costa, D

AU - Boehme, Lars

AU - Lovell, P

AU - Coleman, R

AU - Timmermann, R

AU - Meijers, A

AU - Meredith, M

AU - Park, Y H

AU - Bailleul, F

AU - Goebel, M

AU - Tremblay, Y

AU - Bost, C A

AU - McMahon, C R

AU - Field, IC

AU - Fedak, Michael Andre

AU - Guinet, C

PY - 2008/8/19

Y1 - 2008/8/19

N2 - Polar regions are particularly sensitive to climate change, with the potential for significant feedbacks between ocean circulation, sea ice, and the ocean carbon cycle. However, the difficulty in obtaining in situ data means that our ability to detect and interpret change is very limited, especially in the Southern Ocean, where the ocean beneath the sea ice remains almost entirely unobserved and the rate of sea-ice formation is poorly known. Here, we show that southern elephant seals (Mirounga leonina) equipped with oceanographic sensors can measure ocean structure and water mass changes in regions and seasons rarely observed with traditional oceanographic platforms. In particular, seals provided a 30-fold increase in hydrographic profiles from the sea-ice zone, allowing the major fronts to be mapped south of 60 degrees S and sea-ice formation rates to be inferred from changes in upper ocean salinity. Sea-ice production rates peaked in early winter (April-May) during the rapid northward expansion of the pack ice and declined by a factor of 2 to 3 between May and August, in agreement with a three-dimensional coupled ocean-sea-ice model. By measuring the high-latitude ocean during winter, elephant seals fill a "blind spot" in our sampling coverage, enabling the establishment of a truly global ocean-observing system.

AB - Polar regions are particularly sensitive to climate change, with the potential for significant feedbacks between ocean circulation, sea ice, and the ocean carbon cycle. However, the difficulty in obtaining in situ data means that our ability to detect and interpret change is very limited, especially in the Southern Ocean, where the ocean beneath the sea ice remains almost entirely unobserved and the rate of sea-ice formation is poorly known. Here, we show that southern elephant seals (Mirounga leonina) equipped with oceanographic sensors can measure ocean structure and water mass changes in regions and seasons rarely observed with traditional oceanographic platforms. In particular, seals provided a 30-fold increase in hydrographic profiles from the sea-ice zone, allowing the major fronts to be mapped south of 60 degrees S and sea-ice formation rates to be inferred from changes in upper ocean salinity. Sea-ice production rates peaked in early winter (April-May) during the rapid northward expansion of the pack ice and declined by a factor of 2 to 3 between May and August, in agreement with a three-dimensional coupled ocean-sea-ice model. By measuring the high-latitude ocean during winter, elephant seals fill a "blind spot" in our sampling coverage, enabling the establishment of a truly global ocean-observing system.

KW - antarctic circumpolar current

KW - instrumentation

KW - marine predators

KW - ocean observation

KW - sea-ice modeling

KW - ANTARCTIC CIRCUMPOLAR CURRENT

KW - OCEANOGRAPHIC CONDITIONS

KW - EAST ANTARCTICA

KW - WEDDELL SEA

KW - SALINITY

KW - EXTENT

KW - WINTER

KW - COVER

KW - FIELD

UR - http://www.scopus.com/inward/record.url?scp=50149106515&partnerID=8YFLogxK

U2 - 10.1073/pnas.0800790105

DO - 10.1073/pnas.0800790105

M3 - Article

VL - 105

SP - 11634

EP - 11639

JO - Proceedings of the National Academy of Sciences of the United States of America

T2 - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 33

ER -

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ID: 442839