It's not your imagination: The snow in the northern U.S. has been bad these past few years. Parts of New York are already seeing record totals, and it's not even winter yet. You can thank climate change.
Remember 2014's headlines about the polar vortex? That's the cold air that sits over the poles. Melting sea ice has shifted and weakened it, and researchers think that can contribute to cooler temperatures.
A weaker polar vortex also leads to a more erratic jet stream — which research has shown causes colder weather when that air dips south.
Enjoy using snowballs to argue against climate change while you still can, though, because the research suggests in the long term, snow and cold weather are going to get much rarer.
It won't happen immediately. Forecasts show winter storms might actually get worse before they lighten up. But the average global temperature is climbing, and as it does, cold weather events will get less likely.
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