Numerical experiments reveal that an enhancement of westerly in the south vicinity of Aleutian low significantly increases the Ekman advection consequently cooling the central North Pacific.

• 风应力异常敏感性试验的结果显示,阿留申低压南面增强的西风可以显著地增强表层的Ekman平流,导致北太平洋中部海温的负异常。