2023 broke records – a scientist explains how global warming fuels climate disasters

Photo: A person walks through a scene of destruction after a wildfire left almost the entire city of Lahaina, Hawaii, in ashes in August 2023. AP Photo/Rick Bowmer

The year 2023 was marked by extraordinary heat, wildfires and weather disasters.

In the U.S., an unprecedented heat wave gripped much of Texas and the Southwest with highs well over 100 degrees Fahrenheit (37.8 Celsius) for the entire month of July.

Historic rainfall in April flooded Fort Lauderdale, Florida, with 25 inches of rain in 24 hours. A wave of severe storms in July sent water pouring into cities across Vermont and New York. Another powerful system in December swept up the Atlantic coast with hurricane-like storm surge and heavy rainfall. The West Coast started and ended the year with flooding and mudslides from atmospheric rivers, and California was hit in August by a tropical storm – an extremely rare event there.

Wildfires ravaged Hawaii, Louisiana and several other states. And Canada’s worst fire season on record sent thick smoke across large parts of North America.

Globally, 2023 was the warmest year on record, and it wreaked havoc around the world. El Niño played a role, but global warming is at the root of the world’s increasing extreme weather.

So, how exactly is global warming linked to fires, storms and other disasters? I am an atmospheric scientist who studies the changing climate. Here’s what you need to know.

Dangerous heat waves and devastating wildfires

When greenhouse gases, such as carbon dioxide from vehicles and power plants, accumulate in the atmosphere, they act like a thermal blanket that warms the planet.

These gases let in high-energy solar radiation while absorbing outgoing low-energy radiation in the form of heat from the Earth. The energy imbalance at the Earth’s surface gradually increases the […]

Full article: theconversation.com