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Solar forcing as an important trigger for West Greenland sea-ice variability over the last millennium

Sha, Longbin; Jiang, Hui; Seidenkrantz, Marit-Solveig; Muscheler, Raimund LU ; Zhang, Xu; Knudsen, Mads Faurschou; Olsen, Jesper; Knudsen, Karen Luise and Zhang, Weiguo (2016) In Quaternary Science Reviews 131. p.148-156
Abstract
Arctic sea ice represents an important component of the climate system, and the present reduction of sea ice in the Arctic is of major concern. Despite its importance, little is known about past changes in sea-ice cover and the underlying forcing mechanisms. Here, we use diatom assemblages from a marine sediment core collected from the West Greenland shelf to reconstruct changes in sea-ice cover over the last millennium. The proxy-based reconstruction demonstrates a generally strong link between changes in sea-ice cover and solar variability during the last millennium. Weaker (or stronger) solar forcing may result in the increase (or decrease) in sea-ice cover west of Greenland. In addition, model simulations show that variations in solar... (More)
Arctic sea ice represents an important component of the climate system, and the present reduction of sea ice in the Arctic is of major concern. Despite its importance, little is known about past changes in sea-ice cover and the underlying forcing mechanisms. Here, we use diatom assemblages from a marine sediment core collected from the West Greenland shelf to reconstruct changes in sea-ice cover over the last millennium. The proxy-based reconstruction demonstrates a generally strong link between changes in sea-ice cover and solar variability during the last millennium. Weaker (or stronger) solar forcing may result in the increase (or decrease) in sea-ice cover west of Greenland. In addition, model simulations show that variations in solar activity not only affect local sea-ice formation, but also control the sea-ice transport from the Arctic Ocean through a sea-ice-ocean-atmosphere feedback mechanism. The role of solar forcing, however, appears to have been more ambiguous during an interval around AD 1500, after the transition from the Medieval Climate Anomaly to the Little Ice Age, likely to be driven by a range of factors. (C) 2015 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Sea-ice variability, Solar activity, West Greenland, Last millennium
in
Quaternary Science Reviews
volume
131
pages
148 - 156
publisher
Elsevier
external identifiers
  • wos:000367490200009
  • scopus:84946882144
ISSN
0277-3791
DOI
10.1016/j.quascirev.2015.11.002
language
English
LU publication?
yes
id
672a67ab-0533-4e02-9da1-92bbe559d0be (old id 8761384)
date added to LUP
2016-02-22 14:44:29
date last changed
2017-05-28 03:15:02
@article{672a67ab-0533-4e02-9da1-92bbe559d0be,
  abstract     = {Arctic sea ice represents an important component of the climate system, and the present reduction of sea ice in the Arctic is of major concern. Despite its importance, little is known about past changes in sea-ice cover and the underlying forcing mechanisms. Here, we use diatom assemblages from a marine sediment core collected from the West Greenland shelf to reconstruct changes in sea-ice cover over the last millennium. The proxy-based reconstruction demonstrates a generally strong link between changes in sea-ice cover and solar variability during the last millennium. Weaker (or stronger) solar forcing may result in the increase (or decrease) in sea-ice cover west of Greenland. In addition, model simulations show that variations in solar activity not only affect local sea-ice formation, but also control the sea-ice transport from the Arctic Ocean through a sea-ice-ocean-atmosphere feedback mechanism. The role of solar forcing, however, appears to have been more ambiguous during an interval around AD 1500, after the transition from the Medieval Climate Anomaly to the Little Ice Age, likely to be driven by a range of factors. (C) 2015 Elsevier Ltd. All rights reserved.},
  author       = {Sha, Longbin and Jiang, Hui and Seidenkrantz, Marit-Solveig and Muscheler, Raimund and Zhang, Xu and Knudsen, Mads Faurschou and Olsen, Jesper and Knudsen, Karen Luise and Zhang, Weiguo},
  issn         = {0277-3791},
  keyword      = {Sea-ice variability,Solar activity,West Greenland,Last millennium},
  language     = {eng},
  pages        = {148--156},
  publisher    = {Elsevier},
  series       = {Quaternary Science Reviews},
  title        = {Solar forcing as an important trigger for West Greenland sea-ice variability over the last millennium},
  url          = {http://dx.doi.org/10.1016/j.quascirev.2015.11.002},
  volume       = {131},
  year         = {2016},
}