Tornado Alley (PROG)

[sortagreen]

You do realize, that your backyard isn't the planet, right?

No one said it would never get cold again at your house, you fucking moron.

On average we are setting records. Cities in the Middle East, India and the American southwest to some extent, are approaching uninhabitable.

Pacific warming is fucking up the polar vortex. I didn't need AI to tell me that, because I can actually reason, and I have access to a map. But here...

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AI Overview
How rare stratospheric warming could impact California

Yes, Pacific warming significantly affects the polar vortex, often weakening it by altering atmospheric circulation, causing it to become wobbly or split, and allowing frigid Arctic air to spill into North America, Europe, and Asia, leading to extreme winter weather, with specific patterns like Eastern Pacific warming causing asymmetric impacts, as shown in studies from Nature and AGU Publications.

How Pacific Warming Influences the Polar Vortex

Alters Jet Stream: Warm ocean waters in the Pacific inject heat and moisture into the atmosphere, shifting the jet stream, making it wavier and more prone to disruptions.

Weakens Vortex: This altered jet stream can slow or weaken the stratospheric polar vortex, reducing the temperature difference between the poles and tropics, making it easier for cold air to escape.

Creates Asymmetry: Warming in the Eastern Equatorial Pacific can specifically strengthen the vortex over Eurasia but weaken it over North America, leading to distinct regional weather.

Triggers Disruptions: High-latitude Pacific warming (like the Pacific Decadal Oscillation - PDO) is linked to large-scale atmospheric changes that favor polar vortex breakdowns, creating extreme cold spells.

Observed & Projected Impacts

Historic Events: Pacific variability contributed to early 20th-century Arctic warming and vortex weakening, according to research in Nature Climate Change.

Future Projections: Climate models suggest tropical Pacific warming will drive a more asymmetric polar vortex in the coming decades, impacting mid-latitude winters.

Current Examples (2024-2025): A weakening Pacific pattern (negative PNA) in late 2025 foreshadowed a disrupted polar vortex and cold blasts for North America, impacting energy demand and winter weather.

In essence, a warming Pacific acts as a major driver, disrupting the polar vortex's stability and increasing the likelihood of severe winter weather outbreaks in the mid-latitudes.