Storms and other extreme weather events aren't divided equally between the two halves of our globe.
aren't divided equally between the two halves of our globe. The Southern Hemisphere is roughly 24 percent stormier than the Northern, in fact, for reasons that until now haven't been all that clear.
A new study looking in detail at global storm patterns identifies the heights of mountain ranges and the circulation of energy around the oceans as two primary factors in determining how storms brew above and below the equator. To reach their conclusions, a team of researchers from the University of Chicago and the University of Washington ran a series of modified climate models, looking at how changing variables such as topography and ocean currents had an impact on the number of storms that were created.
"You can't put the Earth in a jar, so instead, we use climate models built on the laws of physics and run experiments to test our hypotheses,"The researchers changed one part of their climate models at a time. When they flattened the land masses of the Northern and Southern Hemispheres, half of the difference in storminess disappeared.of ocean current, produced when warm water cools and sinks in the Arctic, flows south, and rises with wind-driven upwellings in the Antarctic.
That's likely down to changes in currents brought on by shifts in the atmosphere and ocean temperatures. These shifts are happening worldwide, but in the north, they're"The Southern Hemisphere is projected to become stormier, whereas Northern Hemisphere storminess changes are muted due to a tug of war between tropical and polar climate changes," write the researchers in their
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