Impacts of Changed Ice-Ocean Stress on the North Atlantic Ocean: Role of Ocean Surface Currents

The importance of considering ocean surface currents in ice-ocean stress calculation the North Atlantic Ocean and Arctic sea ice is investigated for first time using a global coupled ocean-sea model. Considering weakens Ekman pumping by about 7.7 15% over Ocean, respectively. It also significantly reduces mechanical energy input to ageostrophic geostrophic currents, mean eddy kinetic reducing conversion rates baroclinic barotropic pathways. Furthermore, strength Meridional Overturning Circulation (AMOC), Nordic Seas MOC, subpolar gyre are found be reduced considerably (by 14.3, 31.0, 18.1%, respectively). weakened AMOC leads 0.12 PW reduction maximum northward heat transport, resulting loss lower temperature Ocean. This shrink extent an attenuation thickness. These findings highlight properly both components on circulation climate studies.