scholarly journals Low-frequency sea level variability and impact of recent sea ice decline on the sea level trend in the Arctic Ocean from a high-resolution simulation

2020 ◽  
Vol 70 (6) ◽  
pp. 787-802
Author(s):  
Kai Xiao ◽  
Meixiang Chen ◽  
Qiang Wang ◽  
Xuezhu Wang ◽  
Wenhao Zhang
Keyword(s):  
High Resolution ◽  
Sea Ice ◽  
Arctic Ocean ◽  
Sea Level ◽  
Low Frequency ◽  
The Arctic ◽  
Sea Level Variability ◽  
Sea Ice Decline ◽  
The Arctic Ocean ◽  
Resolution Simulation

scholarly journals Low-frequency Sea Level Variability and Impact of Recent Sea Ice Decline on the Sea Level Trend in the Arctic Ocean from a High-Resolution Simulation

2020 ◽  
Author(s):  
Meixiang Chen ◽  
Kai Xiao ◽  
Qiang Wang ◽  
Xuezhu Wang ◽  
Wenhao Zhang
Keyword(s):  
Sea Ice ◽  
Arctic Ocean ◽  
Sea Level ◽  
Decadal Variability ◽  
Low Frequency ◽  
The Arctic ◽  
Deep Basin ◽  
Sea Ice Decline ◽  
The Arctic Ocean ◽  
Regional Sea Level

<div> <p>The Arctic Ocean is undergoing significant changes, with rapid sea ice decline, unprecedented freshwater accumulation and pronounced regional sea level rise. In this work we analyzed the sea level variation in the Arctic Ocean based on a global simulation with 4.5 km resolution in the Arctic Ocean using the multi-resolution Finite Element Sea ice-Ocean Model (FESOM). The simulation reasonably reproduces both the main spatial features of the sea surface height (SSH) and its temporal evolution in the Arctic Ocean in comparison to tide gauge and satellite data. Using the model results we investigated the low-frequency variability of the Arctic SSH. The decadal variability is the dominant mode of the annual-mean SSH evolution in the Arctic Ocean, which can be mainly attributed to the variability of the halosteric height. The atmospheric circulation associated with the Arctic Oscillation drives the accumulation and release of freshwater in the Arctic deep basin, thus leading to the decadal variability of the SSH. The associated redistribution of water mass changes the ocean mass over the continental shelf, so the change in SSH is opposite between the shelf seas and the deep basin. By using a dedicated sensitivity simulation in which the recent sea ice decline is eliminated, we find that the sea ice decline contributed considerably to the observed sea level rise in the Amerasian Basin in the recent decades. Although the sea ice decline did not change the mean SSH averaged over the Arctic Ocean, it significantly changed the spatial pattern of the SSH trend. Our finding indicates that both the wind regime and on-going sea ice decline should be considered to better understand and predict the changes in regional sea level in the Arctic Ocean.</p> </div>

scholarly journals Attribution of the Recent Winter Sea Ice Decline over the Atlantic Sector of the Arctic Ocean*

2015 ◽  
Vol 28 (10) ◽  
pp. 4027-4033 ◽  
Author(s):  
Doo-Sun R. Park ◽  
Sukyoung Lee ◽  
Steven B. Feldstein
Keyword(s):  
Sea Ice ◽  
Arctic Ocean ◽  
Environmental Changes ◽  
Arctic Sea Ice ◽  
The Arctic ◽  
Positive Trend ◽  
Ir Radiation ◽  
Atlantic Sector ◽  
Sea Ice Decline ◽  
The Arctic Ocean

Abstract Wintertime Arctic sea ice extent has been declining since the late twentieth century, particularly over the Atlantic sector that encompasses the Barents–Kara Seas and Baffin Bay. This sea ice decline is attributable to various Arctic environmental changes, such as enhanced downward infrared (IR) radiation, preseason sea ice reduction, enhanced inflow of warm Atlantic water into the Arctic Ocean, and sea ice export. However, their relative contributions are uncertain. Utilizing ERA-Interim and satellite-based data, it is shown here that a positive trend of downward IR radiation accounts for nearly half of the sea ice concentration (SIC) decline during the 1979–2011 winter over the Atlantic sector. Furthermore, the study shows that the Arctic downward IR radiation increase is driven by horizontal atmospheric water flux and warm air advection into the Arctic, not by evaporation from the Arctic Ocean. These findings suggest that most of the winter SIC trends can be attributed to changes in the large-scale atmospheric circulations.

scholarly journals Recent Sea Ice Decline Did Not Significantly Increase the Total Liquid Freshwater Content of the Arctic Ocean

2018 ◽  
Vol 32 (1) ◽  
pp. 15-32 ◽  
Author(s):  
Qiang Wang ◽  
Claudia Wekerle ◽  
Sergey Danilov ◽  
Dmitry Sidorenko ◽  
Nikolay Koldunov ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Sea Ice ◽  
Arctic Ocean ◽  
Ocean Circulation ◽  
General Circulation ◽  
The Arctic ◽  
Sea Ice Decline ◽  
The Arctic Ocean ◽  
Eurasian Basin ◽  
The Impact

Abstract The freshwater stored in the Arctic Ocean is an important component of the global climate system. Currently the Arctic liquid freshwater content (FWC) has reached a record high since the beginning of the last century. In this study we use numerical simulations to investigate the impact of sea ice decline on the Arctic liquid FWC and its spatial distribution. The global unstructured-mesh ocean general circulation model Finite Element Sea Ice–Ocean Model (FESOM) with 4.5-km horizontal resolution in the Arctic region is applied. The simulations show that sea ice decline increases the FWC by freshening the ocean through sea ice meltwater and modifies upper ocean circulation at the same time. The two effects together significantly increase the freshwater stored in the Amerasian basin and reduce its amount in the Eurasian basin. The salinification of the upper Eurasian basin is mainly caused by the reduction in the proportion of Pacific Water and the increase in that of Atlantic Water (AW). Consequently, the sea ice decline did not significantly contribute to the observed rapid increase in the Arctic total liquid FWC. However, the changes in the Arctic freshwater spatial distribution indicate that the influence of sea ice decline on the ocean environment is remarkable. Sea ice decline increases the amount of Barents Sea branch AW in the upper Arctic Ocean, thus reducing its supply to the deeper Arctic layers. This study suggests that all the dynamical processes sensitive to sea ice decline should be taken into account when understanding and predicting Arctic changes.

scholarly journals Intensification of the Atlantic Water Supply to the Arctic Ocean Through Fram Strait Induced by Arctic Sea Ice Decline

2020 ◽  
Vol 47 (3) ◽  
Author(s):  
Qiang Wang ◽  
Claudia Wekerle ◽  
Xuezhu Wang ◽  
Sergey Danilov ◽  
Nikolay Koldunov ◽  
...  
Keyword(s):  
Sea Ice ◽  
Water Supply ◽  
Arctic Ocean ◽  
Atlantic Water ◽  
Arctic Sea Ice ◽  
The Arctic ◽  
Fram Strait ◽  
Sea Ice Decline ◽  
Arctic Sea ◽  
The Arctic Ocean

scholarly journals On the future navigability of Arctic sea routes: High-resolution projections of the Arctic Ocean and sea ice

Marine Policy ◽  
2017 ◽  
Vol 75 ◽  
pp. 300-317 ◽  
Author(s):  
Yevgeny Aksenov ◽  
Ekaterina E. Popova ◽  
Andrew Yool ◽  
A.J. George Nurser ◽  
Timothy D. Williams ◽  
...  
Keyword(s):  
High Resolution ◽  
Sea Ice ◽  
Arctic Ocean ◽  
The Arctic ◽  
Arctic Sea ◽  
The Arctic Ocean ◽  
The Future

scholarly journals Impact of sea ice decline in the Arctic Ocean on the number of extreme low‐temperature days over China

2019 ◽  
Vol 40 (3) ◽  
pp. 1421-1434
Author(s):  
Feifan Ge ◽  
Tao Yan ◽  
Lu Zhou ◽  
Yuelin Jiang ◽  
Wei Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Sea Ice ◽  
Arctic Ocean ◽  
The Arctic ◽  
Sea Ice Decline ◽  
The Arctic Ocean

Seasonal Variability of Water and Sea-Ice Circulation in the Arctic Ocean in a High-Resolution Model

2020 ◽  
Vol 56 (5) ◽  
pp. 522-533 ◽  
Author(s):  
L. Y. Kalnitskii ◽  
M. N. Kaurkin ◽  
K. V. Ushakov ◽  
R. A. Ibrayev
Keyword(s):  
High Resolution ◽  
Sea Ice ◽  
Arctic Ocean ◽  
Seasonal Variability ◽  
The Arctic ◽  
The Arctic Ocean ◽  
Resolution Model ◽  
High Resolution Model

scholarly journals Arctic sea level variability from high-resolution model simulations and implications for the Arctic observing system

2021 ◽  
Author(s):  
Guokun Lyu ◽  
Nuno Serra ◽  
Meng Zhou ◽  
Detlef Stammer
Keyword(s):  
High Resolution ◽  
Arctic Ocean ◽  
Sea Level ◽  
The Arctic ◽  
Sea Level Variability ◽  
Model Simulations ◽  
Marginal Seas ◽  
Resolution Model ◽  
High Resolution Model ◽  
Canadian Basin

Abstract. Two high-resolution model simulations are used to investigate the spatio-temporal variability of the Arctic Ocean sea level. The model simulations reveal barotropic sea level variability at periods < 30 days, which is strongly captured by bottom pressure observations. The seasonal sea level variability is driven by volume ex-changes with the Pacific and Atlantic Oceans and the redistribution of the water by the wind. Halosteric effects due to river runoff and evaporation minus precipitation (EmPmR), ice melting/formation also contribute in the marginal seas and seasonal sea ice extent regions. In the central Arctic Ocean, especially the Canadian Basin, the decadal halosteric effect dominates sea level variability. Satellite altimetric observations and Gravity Re-covery and Climate Experiment (GRACE) measurements could be used to infer freshwater content changes in the Canadian Basin at periods longer than one year. The increasing number of profiles seems to capture fresh-water content changes since 2007, encouraging further data synthesis work with a more complicated interpola-tion method. Further, in-situ hydrographic observations should be enhanced to reveal the freshwater budget and close the gaps between satellite altimetry and GRACE, especially in the marginal seas.

scholarly journals Sea level variability in the Arctic Ocean from AOMIP models

2007 ◽  
Vol 112 (C4) ◽  
Author(s):  
A. Proshutinsky ◽  
I. Ashik ◽  
S. Häkkinen ◽  
E. Hunke ◽  
R. Krishfield ◽  
...  
Keyword(s):  
Arctic Ocean ◽  
Sea Level ◽  
The Arctic ◽  
Sea Level Variability ◽  
The Arctic Ocean
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