Climate model bias in equatorial Atlantic and possible reasons

Presentation Date: 

Monday, July 12, 2021

Presentation Slides: 

AGCMs suffer from biases of a reversed zonal gradient in SST and weak surface easterlies (the westerly bias) in the equatorial Atlantic during boreal spring. The first root is insufficient lower-tropospheric diabatic heating over Amazonia. The second root is erroneously weak zonal momentum flux (entrainment) across the top of the boundary layer.