Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Effect of Hudson Bay closure on global and regional climate under different astronomical configurations
Wu, Z.; Yin, Q.; Ganopolski, A.; Berger, A.; Guo, Z.T. (2023). Effect of Hudson Bay closure on global and regional climate under different astronomical configurations. Global Planet. Change 222: 104040. https://dx.doi.org/10.1016/j.gloplacha.2023.104040
In: Global and Planetary Change. Elsevier: Amsterdam; New York; Oxford; Tokyo. ISSN 0921-8181; e-ISSN 1872-6364, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    Hudson Bay; AMOC; Ice sheets; Glacial simulations; Astronomical forcing

Authors  Top 
  • Berger, A., more
  • Guo, Z.T.

Abstract
    During the Quaternary, the Hudson Bay switched between closed (covered by ice sheet) and open (ice sheet-free) conditions due to large variations of ice sheets. However, how the closure and opening of the Hudson Bay have affected the local and global climates is still poorly understood. Using the LOVECLIM1.3 model, here we investigate the effect of the Hudson Bay closure under glacial conditions with different astronomical configu-rations, greenhouse gases (GHG) concentrations and Northern Hemisphere (NH) ice volume. Our model results show that the closure of the Hudson Bay could lead to a strengthening of the Atlantic Meridional Overturning Circulation (AMOC), which in turn leads to a warming in the NH with notable warming in the Labrador Sea and northeast North Atlantic, a cooling in the Southern Hemisphere (SH) and a northward shift of the Inter-tropical Convergence Zone (ITCZ). In addition to the large-scale climate changes, the closure of Hudson Bay also leads to a strong cooling over the Hudson Bay region due to changes of surface properties and a cooling to the southeast of Greenland due to more wind-driven sea ice export from the Arctic. However, the effect of the Hudson Bay closure depends on background climate conditions, and it could weaken or slightly reinforce the effect of the ice sheets for different astronomical configurations.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors