homehome Home chatchat Notifications


How climate change leads to more frequent thunderstorms

Scientists have put a number between climate change and storm frequency for the first time.

Tibi Puiu
January 30, 2019 @ 3:54 pm

share Share

For decades, scientists have known that rising sea temperatures lead to more intense and frequent storms, as well as other extreme weather such as hurricanes or drought. Now, researchers at NASA have performed the first study that provides a quantitative estimate of how much thunderstorms are likely to increase. Their projections suggest that every 1°C (1.8°F) rise in ocean mean temperatures increases storm frequency at the tropics by 21%.

Credit: Pixabay.

The research team at NASA’s Jet Propulsion Laboratory in Pasadena, California analyzed 15 years of satellite data acquired by the federal agency’s Atmospheric Infrared Sounder (AIRS) instrument over the tropical oceans. According to the results, extreme thunderstorms — defined as those producing at least 3 millimeters (0.12 inches) of rain per hour over a 25-kilometer (16-mile) area — form when sea surface temperatures are higher than 28°C (82°F).

Oceans act as planetary heat sinks, absorbing about 20 times as much heat as the atmosphere over the past half-century. In fact, the top three meters of ocean water trap more heat energy than the entire atmosphere. Since the 1980s, oceans have absorbed roughly one-billion times the heat energy released by the atom bombs dropped over Hiroshima and Nagasaki, the study’s authors estimate. Some of this energy naturally escapes into the air, driving the strength and frequency of storm systems.

Based on established climate models, tropical ocean surface temperatures might rise by as much as 2.7°C (4.8°F) by the end of the century, meaning we could see 60% more extreme storms than today. Averaged as a whole, the global ocean surface temperature for January 2018 was 0.56°C (1.01°F) above the 20th century average of 15.8°C (60.5°F), according to NOAA.

“Our results quantify and give a more visual meaning to the consequences of the predicted warming of the oceans,” Hartmut Aumann, lead author of the new study, said in a statement. “More storms mean more flooding, more structure damage, more crop damage and so on, unless mitigating measures are implemented.”

This graph shows how the average surface temperature of the world’s oceans has changed since 1880. Credit: NOAA, 2016.

This graph shows how the average surface temperature of the world’s oceans has changed since 1880. Credit: NOAA, 2016.

Besides increasing the severity and frequency of storms, warmer oceans put coastal communities at risk (and incur extra costs) due to rising sea levels and threaten marine wildlife such as coral reefs and fisheries due to ocean acidification (a byproduct of CO2 absorption).

The findings appeared in the journal Geophysical Research Letters.

share Share

AI-designed autonomous underwater glider looks like a paper airplane and swims like a seal

An MIT-designed system lets AI evolve new shapes for ocean-exploring robots.

Bees are facing a massive survival challenge. Could AI help them?

Our tiny friends are in trouble and it's because of us.

NASA finally figures out what's up with those "Mars spiders"

They're not actual spiders, of course, but rather strange geological features.

Cycling Is Four Times More Efficient Than Walking. A Biomechanics Expert Explains Why

The answer lies in the elegant biomechanics of how our bodies interact with this wonderfully simple machine.

We’re Starting to Sound Like ChatGPT — And We Don’t Even Realize It

Are chatbots changing our vocabulary? There's increasing evidence this is the case.

Scientists Just Showed How Alien Life Could Emerge in Titan's Methane Lakes

What if the ingredients of life could assemble on a methane world?

Can Dogs Really Smell Parkinson’s? These Two Good Boys Say Yes

Our best friend is even more awesome than we thought.

Scientists 3D Printed Microscopic Elephants and Barcodes Inside Cells for the First Time

What happens when you 3D-print an elephant and a microlaser inside a living cell?

AI-Powered Surgical Robot Performed a Full Operation With Zero Help From Humans

An AI robot performed gallbladder surgery without human help, and it worked every time.

These 18 Million-Year-Old Teeth Contain the Oldest Proteins Ever and They Came From Giant Prehistoric Beasts

The oldest protein fragments ever recovered challenge what we thought we knew about fossil decay.