Beaufort Gyre Liquid Freshwater Content Change Under Greenhouse Warming From an Eddy‐Resolving Climate Simulation DOI Creative Commons
Xuan Shan, Michael A. Spall, Shantong Sun

et al.

Geophysical Research Letters, Journal Year: 2025, Volume and Issue: 52(8)

Published: April 25, 2025

Abstract Future changes in the Beaufort Gyre liquid freshwater content (LFWC) are important for local and global climate. However, traditional climate models cannot resolve oceanic atmospheric eddies that critical to LFWC variations. In this study, we investigate physical processes controlling an eddy‐resolving simulation. The model simulation largely reproduces observed changes, projects a long‐term increase with intensification of its decadal variability during 21st century. Freshwater budget analysis suggests future strongly influenced by sea ice melt. conversion from solid phase provides more into ocean. Meanwhile, loss enhances efficiency air‐sea momentum transfer, leading increased wind‐driven convergence variability. variation will regulate Arctic exports coincident O (0.5 Sv) change meridional overturning circulation.

Language: Английский

Dominant inflation of the Arctic Ocean’s Beaufort Gyre in a warming climate DOI Creative Commons
Qiang Wang, Qi Shu, Shizhu Wang

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: Jan. 20, 2025

Language: Английский

Citations

0
The Arctic Beaufort Gyre in CMIP6 Models: Present and Future DOI Creative Commons
Marylou Athanase, Raphael Köhler, Céline Heuzé

et al.

Journal of Geophysical Research Oceans, Journal Year: 2025, Volume and Issue: 130(4)

Published: March 31, 2025

Abstract The Beaufort Gyre (BG) is an important feature of the Arctic Ocean. By accumulating or releasing freshwater, it influences ocean properties both within and as far North Atlantic. Yet, its future remains uncertain: gyre could strengthen sea ice declines allows increased wind stress on ocean, weaken along with High (BH) pressure system. Here, we provide a first evaluation BG in historical climate‐change simulations from 27 available global climate models. We find that vast majority models overestimate area, strength, northward extent. After discarding too inaccurate drivers—namely, cover BH—we quantify changes under two emission scenarios: intermediate SSP2‐4.5 high‐warming SSP5‐8.5. end 21st century, most simulate significant decline even disappearance BG, especially SSP5–8.5. show this mainly driven by simulated weakening BH, whose influence variations enhanced transition to thin‐ice Arctic. associated expected decrease freshwater storage, reduced salinity contrasts between subsurface waters outflow regions. While model biases unresolved processes remain, such possible stratification shift Atlantic‐Arctic meridional overturning circulation northward.

Language: Английский

Citations

0
Beaufort Gyre Liquid Freshwater Content Change Under Greenhouse Warming From an Eddy‐Resolving Climate Simulation DOI Creative Commons
Xuan Shan, Michael A. Spall, Shantong Sun

et al.

Geophysical Research Letters, Journal Year: 2025, Volume and Issue: 52(8)

Published: April 25, 2025

Abstract Future changes in the Beaufort Gyre liquid freshwater content (LFWC) are important for local and global climate. However, traditional climate models cannot resolve oceanic atmospheric eddies that critical to LFWC variations. In this study, we investigate physical processes controlling an eddy‐resolving simulation. The model simulation largely reproduces observed changes, projects a long‐term increase with intensification of its decadal variability during 21st century. Freshwater budget analysis suggests future strongly influenced by sea ice melt. conversion from solid phase provides more into ocean. Meanwhile, loss enhances efficiency air‐sea momentum transfer, leading increased wind‐driven convergence variability. variation will regulate Arctic exports coincident O (0.5 Sv) change meridional overturning circulation.

Language: Английский

Citations

0