Articles | Volume 13, issue 11
The Cryosphere, 13, 3007–3021, 2019
https://doi.org/10.5194/tc-13-3007-2019
The Cryosphere, 13, 3007–3021, 2019
https://doi.org/10.5194/tc-13-3007-2019

Research article 18 Nov 2019

Research article | 18 Nov 2019

Decadal changes in the leading patterns of sea level pressure in the Arctic and their impacts on the sea ice variability in boreal summer

Nakbin Choi et al.

Data sets

Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors M. Tschudi, W. N. Meier, J. S. Stewart, C. Fowler, and J. Maslanik https://doi.org/10.5067/INAWUWO7QH7B

EASE-Grid Sea Ice Age M. Tschudi, C. Fowler, J. Maslanik, J. S. Stewart, and W. N. Meier https://doi.org/10.5067/PFSVFZA9Y85G

Sea Ice Index F. Fetterer, K. Knowles, W. N. Meier, M. Savoie, and A. K. Windnagel https://doi.org/10.7265/N5K072F8

Modeling global sea ice with a thickness and enthalpy distribution model in generalized curvilinear coordinates Jinlun Zhang and D.A. Rothrock https://doi.org/10.1175/1520-0493(2003)131<0845:MGSIWA>2.0.CO;2

The NCEP/NCAR 40-Year Reanalysis Project E. Kalnay, M. Kanamitsu, R. Kistler, W. Collins, D. Deaven, L. Gandin, M. Iredell, S. Saha, G. White, J. Woollen, Y. Zhu, M. Chelliah, W. Ebisuzaki, W. Higgins, J. Janowiak, K. C. Mo, C. Ropelewski, J. Wang, A. Leetmaa, R. Reynolds, R. Jenne, and D. Joseph https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2

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Short summary
This study compares the decadal changes of the leading patterns of sea level pressure between the early (1982–1997) and the recent (1998–2017) periods as well as their influences on the Arctic sea ice extent (SIE) variability. The correlation between the Arctic Dipole (AD) mode and SIE becomes significant in the recent period, not in the past, due to its spatial pattern change. This tends to enhance meridional wind over the Fram Strait and sea ice discharge to the Atlantic.