The linkage between wintertime sea ice drift and atmospheric circulation in an Arctic ice-ocean coupled simulation

By analyzing an Arctic ice-ocean coupled simulation, we study the linkage between wintertime sea ice drift and atmospheric circulation, and interpret the driving force terms in the sea ice dynamic equation. Sea ice drift anomaly is featured by an anticyclonic (cyclonic) gyre when regulated by negati...

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Bibliographic Details
Published in:Ocean Modelling
Main Authors: Liang, Xi, Bi, Haibo, Liu, Chengyan, Li, Xichen, Wang, Dakui, Zhao, Fu, Tian, Zhongxiang, Li, Ming, Liu, Na
Format: Report
Language:English
Published: ELSEVIER SCI LTD 2024
Subjects:
Wintertime Arctic sea ice drift
Atmospheric circulation
MITgcm ice-ocean coupled model
Meteorology & Atmospheric Sciences
Oceanography
BEAUFORT GYRE
OSCILLATION
VARIABILITY
CONVECTION
IMPACT
Arctic Archipelago
Canadian Arctic Archipelago
Chukchi
Sea ice
Online Access:http://ir.qdio.ac.cn/handle/337002/185625
http://ir.qdio.ac.cn/handle/337002/185626
https://doi.org/10.1016/j.ocemod.2024.102362
Description
Summary:By analyzing an Arctic ice-ocean coupled simulation, we study the linkage between wintertime sea ice drift and atmospheric circulation, and interpret the driving force terms in the sea ice dynamic equation. Sea ice drift anomaly is featured by an anticyclonic (cyclonic) gyre when regulated by negative (positive) phase of Arctic Oscillation with positive (negative) phase of Arctic Dipole, and a quasi-meridional stream from Chukchi-Beaufort (Barents-Kara) Seas to Barents-Kara (Chukchi-Beaufort) Seas when regulated by positive (negative) phase of Arctic Oscillation with positive (negative) phase of Arctic Dipole. Sea ice drift anomaly, when regulated by the mode alone, resembles spatial pattern of leading atmospheric mode. Decomposing sea ice dynamical equation shows that wind-ice stress dominates sea ice drift in areas away from islands and continental coastlines, ocean-ice stress acts as a resistant power to partly cancel the wind-ice stress in these areas, while in the coastal areas such as the thick multiyear ice zone north of the Canadian Arctic Archipelago, the wind-ice and ocean-ice stresses are small, the balance exists between sea surface height potential gradient and internal ice stress divergence. Developing more sophisticated internal ice stress expression in ice model is of great important to correctly project future sea ice change for the ice modeling community.

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