Climatologists posit that the recent widening of the tropical belt is primarily caused by multi-decadal sea surface temperature variability in the Pacific Ocean. This variability includes the Pacific Decadal Oscillation (a long-lived El NiƱo-like pattern of Pacific climate variability) and anthropogenic pollutants, which act to modify the Pacific Decadal Oscillation. Until now there was no clear explanation for what is driving the widening.
by via Latest Science News -- ScienceDaily
by via Latest Science News -- ScienceDaily
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