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Articles on Weather

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Tiny changes, like a butterfly’s wing flapping, can be amplified downstream in a chaotic system. Catherine Falls Commercial/Moment via Getty Images

What is chaos? A complex systems scientist explains

Part of the 2021 Nobel Prize in Physics was awarded for work modeling Earth’s climate using its chaotic, complex weather. To scientists, chaos lies in the gray zone between randomness and predictability.
Lightning during a monsoon storm in southern Arizona, Saguaro National Park. Pete Gregoire, NOAA

Monsoons make deserts bloom in the US Southwest, but climate change is making these summer rainfalls more extreme and erratic

Monsoons are weather patterns that bring thunderstorms and heavy rains to hot, dry areas when warm, moist ocean air moves inland. They’re challenging to forecast, especially in a changing climate.
Parts of Lake Elsinore, California, were overrun with muddy floodwater after a storm hit the Holy Fire burn scar in 2018. Jennifer Cappuccio Maher/Digital First Media/Inland Valley Daily Bulletin via Getty Images

Wildfire burn scars can intensify and even create thunderstorms that lead to catastrophic flooding – here’s how it works

An atmospheric scientist and sailplane pilot describes why large areas of burned land can produce clouds and rainstorms.
Six-year-old Makai'ryn Terrio, centre, cools off with his brothers as they play in water fountains in Montréal. The city had its hottest August on record. The Canadian Press/Graham Hughes

What climate change means for southern Ontario and Québec

Southern Québec is warming twice as rapidly as the rest of the world due to the progressive loss of snow cover. An average annual warming of 3 C to 6 C is expected by the end of the century.
Climate change made the devastating flooding in Belgium, Germany and other European countries in July 2021 more likely. Anthony Dehez/Belga/AFP via Getty Images

Is climate change to blame for extreme weather events? Attribution science says yes, for some – here’s how it works

A new attribution study finds human-caused climate change made Europe’s July floods more likely. What about Tennessee’s flooding? An atmospheric scientist explains how scientists make the connection.
In high alpine terrain, sun and dry air can turn snow straight into water vapor. Jeffrey Pang/WikimediaCommons

Snow can disappear straight into the atmosphere in hot, dry weather

As rivers run dry in the Rocky Mountains and the West, it’s easy to wonder where all the snow you see on mountain peaks goes. Some of it ends up in the air, but researchers aren’t sure how much.

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