There may be a fourth or more factors contributing. This article mentions global warming, el niño and dust particles, in other articles scientists speculate also that reduced shipping emissions may have lead to a weakening of a cooling effect in that area.
There may be a fourth or more factors contributing. This article mentions global warming, el niño and dust particles, in other articles scientists speculate also that reduced shipping emissions may have lead to a weakening of a cooling effect in that area.