Climate change and natural variability are making this a year of big weather events—so get ready for more heat waves, droughts, and hurricanes.
Meteorologists say that many of these events are part of a troubling trend. While 2022 is not yet the worst year on record for extreme weather, we are currently witnessing the impact of climate change and the cascading effect of one problematic weather condition influencing another.
“The first melt filled the rivers, and then the second warm phase in early June here just knocked it out of their banks,” he explains. A major culprit here is La Niña, a cyclical natural weather phenomenon that results in cooler ocean temperatures in the eastern central Pacific Ocean and warmer temperatures in the Atlantic. La Niña also reduces wind shear in the Atlantic, meaning that cyclones have a greater chance of building up in the atmosphere and becoming strong enough to be classed as hurricanes. Episodes of La Niña typically occur every two to seven years and usually last for between nine and 12 months.
La Niña has all kinds of effects on weather, he notes, not just on hurricanes. It could exacerbate drought in the southwestern US, for example. Ultimately, a potent mix of climate change’s effects and natural variability are hammering some parts of the world right now.
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