Seasonal variability of the warm Atlantic water layer in the vicinity of the Greenland shelf break

Jeremy P. Grist; Simon A. Josey; Lars Boehme; Michael P. Meredith; Kristin Laidre; Mads Peter Heide-Jorgensen; Kit Kovacs; Christian Lydersen; Fraser Davidson; Garry Stenson; Mike Hammill; Robert Marsh; Andrew Coward

doi:10.1002/2014GL062051

Seasonal variability of the warm Atlantic water layer in the vicinity of the Greenland shelf break

Jeremy P. Grist, Simon A. Josey, Lars Boehme, Michael P. Meredith, Kristin Laidre, Mads Peter Heide-Jorgensen, Kit Kovacs, Christian Lydersen, Fraser Davidson, Garry Stenson, Mike Hammill, Robert Marsh, Andrew Coward

Research output: Contribution to journal › Article › peer-review

Abstract

The warmest water reaching the east and west coast of Greenland is found between 200 m and 600 m. Whilst important for melting Greenland's outlet glaciers, limited winter observations of this layer prohibit determination of its seasonality. To address this, temperature data from Argo profiling floats, a range of sources within the World Ocean Database and unprecedented coverage from marine-mammal borne sensors have been analysed for the period 2002-2011. A significant seasonal range in temperature (~1-2 °C) is found in the warm layer, in contrast to most of the surrounding ocean. The phase of the seasonal cycle exhibits considerable spatial variability, with the warmest water found near the eastern and southwestern shelf-break towards the end of the calendar year. High-resolution ocean model trajectory analysis suggest the timing of the arrival of the year's warmest water is a function of advection time from the subduction site in the Irminger Basin.

Original language	English
Pages (from-to)	8530-8537
Journal	Geophysical Research Letters
Volume	41
Issue number	23
Early online date	11 Dec 2014
DOIs	https://doi.org/10.1002/2014GL062051
Publication status	Published - 16 Dec 2014

Keywords

Ocean temperature
Greenland shelf
Seasonal cycle
Observations
Sea mammal
Trajectory analysis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/2014GL062051Licence: CC BY

Grist_2014_GRL_Seasonalvariability_CC
Copyright © 2014. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Final published version, 7.12 MBLicence: CC BY

ROCHA: Recent and Ongoing Changes in the High-latitude Atlantic (ROCHA)
Boehme, L. (PI)
NERC
1/10/12 → 30/09/13
Project: Standard

Cite this

Grist, J. P., Josey, S. A., Boehme, L., Meredith, M. P., Laidre, K., Heide-Jorgensen, M. P., Kovacs, K., Lydersen, C., Davidson, F., Stenson, G., Hammill, M., Marsh, R., & Coward, A. (2014). Seasonal variability of the warm Atlantic water layer in the vicinity of the Greenland shelf break. Geophysical Research Letters, 41(23), 8530-8537. https://doi.org/10.1002/2014GL062051

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title = "Seasonal variability of the warm Atlantic water layer in the vicinity of the Greenland shelf break",

abstract = "The warmest water reaching the east and west coast of Greenland is found between 200 m and 600 m. Whilst important for melting Greenland's outlet glaciers, limited winter observations of this layer prohibit determination of its seasonality. To address this, temperature data from Argo profiling floats, a range of sources within the World Ocean Database and unprecedented coverage from marine-mammal borne sensors have been analysed for the period 2002-2011. A significant seasonal range in temperature (~1-2 °C) is found in the warm layer, in contrast to most of the surrounding ocean. The phase of the seasonal cycle exhibits considerable spatial variability, with the warmest water found near the eastern and southwestern shelf-break towards the end of the calendar year. High-resolution ocean model trajectory analysis suggest the timing of the arrival of the year's warmest water is a function of advection time from the subduction site in the Irminger Basin.",

keywords = "Ocean temperature, Greenland shelf, Seasonal cycle, Observations, Sea mammal, Trajectory analysis",

author = "Grist, {Jeremy P.} and Josey, {Simon A.} and Lars Boehme and Meredith, {Michael P.} and Kristin Laidre and Heide-Jorgensen, {Mads Peter} and Kit Kovacs and Christian Lydersen and Fraser Davidson and Garry Stenson and Mike Hammill and Robert Marsh and Andrew Coward",

note = "This research was funded by the UK Natural Environment Research Council Grant. NE/H01103X/1.",

year = "2014",

month = dec,

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doi = "10.1002/2014GL062051",

language = "English",

volume = "41",

pages = "8530--8537",

journal = "Geophysical Research Letters",

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TY - JOUR

T1 - Seasonal variability of the warm Atlantic water layer in the vicinity of the Greenland shelf break

AU - Grist, Jeremy P.

AU - Josey, Simon A.

AU - Boehme, Lars

AU - Meredith, Michael P.

AU - Laidre, Kristin

AU - Heide-Jorgensen, Mads Peter

AU - Kovacs, Kit

AU - Lydersen, Christian

AU - Davidson, Fraser

AU - Stenson, Garry

AU - Hammill, Mike

AU - Marsh, Robert

AU - Coward, Andrew

N1 - This research was funded by the UK Natural Environment Research Council Grant. NE/H01103X/1.

PY - 2014/12/16

Y1 - 2014/12/16

N2 - The warmest water reaching the east and west coast of Greenland is found between 200 m and 600 m. Whilst important for melting Greenland's outlet glaciers, limited winter observations of this layer prohibit determination of its seasonality. To address this, temperature data from Argo profiling floats, a range of sources within the World Ocean Database and unprecedented coverage from marine-mammal borne sensors have been analysed for the period 2002-2011. A significant seasonal range in temperature (~1-2 °C) is found in the warm layer, in contrast to most of the surrounding ocean. The phase of the seasonal cycle exhibits considerable spatial variability, with the warmest water found near the eastern and southwestern shelf-break towards the end of the calendar year. High-resolution ocean model trajectory analysis suggest the timing of the arrival of the year's warmest water is a function of advection time from the subduction site in the Irminger Basin.

AB - The warmest water reaching the east and west coast of Greenland is found between 200 m and 600 m. Whilst important for melting Greenland's outlet glaciers, limited winter observations of this layer prohibit determination of its seasonality. To address this, temperature data from Argo profiling floats, a range of sources within the World Ocean Database and unprecedented coverage from marine-mammal borne sensors have been analysed for the period 2002-2011. A significant seasonal range in temperature (~1-2 °C) is found in the warm layer, in contrast to most of the surrounding ocean. The phase of the seasonal cycle exhibits considerable spatial variability, with the warmest water found near the eastern and southwestern shelf-break towards the end of the calendar year. High-resolution ocean model trajectory analysis suggest the timing of the arrival of the year's warmest water is a function of advection time from the subduction site in the Irminger Basin.

KW - Ocean temperature

KW - Greenland shelf

KW - Seasonal cycle

KW - Observations

KW - Sea mammal

KW - Trajectory analysis

U2 - 10.1002/2014GL062051

DO - 10.1002/2014GL062051

M3 - Article

SN - 0094-8276

VL - 41

SP - 8530

EP - 8537

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 23

ER -

Seasonal variability of the warm Atlantic water layer in the vicinity of the Greenland shelf break

Abstract

Keywords

UN SDGs

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Projects

ROCHA: Recent and Ongoing Changes in the High-latitude Atlantic (ROCHA)

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