Earth’s lower atmosphere is rising due to climate change

Global temperatures are rising and so, it seems, is part of the sky.

Atmosphere readings collected by weather balloons in the Northern Hemisphere over the last 40 years reveal that climate change is pushing the upper boundary of the troposphere — the slice of sky closest to the ground — steadily upward at a rate of 50 to 60 meters per decade, researchers report November 5 in Science Advances.

Temperature is the driving force behind this change, says Jane Liu, an environmental scientist at the University of Toronto. The troposphere varies in height around the world, reaching as high as 20 kilometers in the tropics and as low as seven kilometers near the poles. During the year, the upper boundary of the troposphere — called the tropopause — naturally rises and falls with the seasons as air expands in the heat and contracts in the cold. But as greenhouse gases trap more and more heat in the atmosphere, the troposphere is expanding higher into the atmosphere (SN: 10/26/21).

Liu and her colleagues found that the tropopause rose an average of about 200 meters in height from 1980 to 2020. Nearly all weather occurs in the troposphere, but it’s unlikely that this shift will have on a big effect on weather, the researchers say. Still, this research is an important reminder of the impact of climate change on our world, Liu says.

“We see signs of global warming around us, in retreating glaciers and rising sea levels,” she says. “Now, we see it in the height of the troposphere.”

Source: Earth’s lower atmosphere is rising due to climate change

*This is a free press release. Upgraded press releases are ad-free!

Apple Global Battery Development Chief Moves to Volkswagen

A woman walks past an Apple logo in front of an Apple store in Saint-Herblain near Nantes, France, on Sept. 16, 2021. (Stephane Mahe/Reuters) SAN FRANCISCO—Apple’s global battery development chief, Ahn Soonho, has moved to Volkswagen to lead the automaker’s development of electric vehicle batteries, according to his Linkedin profile. This is the second time…

Read Press Release

How Much of All Money Is in Bitcoin?

After its launch in 2009, Bitcoin ushered in a new era of blockchain technology and digital currencies. Given all the talk about Bitcoin, you’d think it would be everywhere. Is that really true? How much is Bitcoin worth? Perhaps more importantly, how much of the world’s money is in bitcoins? With the price of BTC…

Read Press Release

Earth’s lower atmosphere is rising due to climate change - Click To Share

Share on facebook
Share on twitter
Share on reddit
Share on linkedin
Share on email
Share on whatsapp