#pnas

[skyberrie]

part ii/?

[neat-deadandlive-things]

So a lot of the papers I discuss in my thesis defense were published in Proceedings of the National Academy of Sciences.

That's all good and fine but general question for all of you, how would you pronounce the journal abbreviate?

[coffee-and-uhg]

This is all the “fault” of @goodwithcheese and her hair poll (x)

Frankie 🚁

lemme spin on your propeller

[jackoshadows]

Thousands of lakes in Greenland have crossed a tipping point from which they can't recover

An estimated 7,500 of Greenland lakes turned brown, began emitting carbon, and suffered a decline in water quality. 

Thousands of Greenland's crystal-clear blue lakes have turned a murky brown thanks to global warming — and the worst part is that they've started emitting carbon dioxide. Record heat and rain in 2022 pushed the lakes of West Greenland past a tipping point, so rather than absorbing carbon dioxide (CO₂), they began to emit it into the atmosphere, according to a new study. The changes began in fall, which is normally a snowy time for Greenland. However, heat waves turned snow into rain and thawed the island's permafrost — frozen ground that stores carbon, iron and other elements. The rains then washed these elements into lakes, turning them brown. Less sunlight was able to penetrate the lakes as they darkened, which had a ripple effect on the microscopic plankton living in the water. The number of plankton absorbing CO₂ through photosynthesis — the process of turning sunlight into energy — declined, while the amount of plankton breaking down and releasing carbon increased, according to a statement released by the University of Maine. The lakes normally absorb CO₂ in the summer, but by the following year they had flipped to become carbon dioxide producers. These types of widespread changes would normally take centuries. Researchers have observed the browning of lakes across the Northern Hemisphere, including the U.S., but it typically takes multiple decades — much longer than the transformation of Greenland's lakes. "The magnitude of this and the rate of change were unprecedented," study lead author Jasmine Saros, a professor of paleolimnology and lake ecology at the University of Maine, said in the statement. The researchers published their findings Tuesday (Jan. 21) in the journal PNAS. In the fall of 2022, an atmospheric circulation pattern —the large scale movement of air — and a hurricane connected a series of atmospheric rivers from the subtropical and mid-latitude Atlantic to Greenland, according to the Copernicus Climate Change Service, which is part of the European Union's Earth Observation Programme. Atmospheric rivers are long, narrow regions of the atmosphere that transport heat and water vapor. Climate models predict that atmospheric river activity is likely to generally become more frequent, intense, and longer-lasting around the world with global warming. In 2022, the rivers brought Greenland record heat that was more than 14 degrees Fahrenheit (8 degrees Celsius) warmer than the monthly average in some areas. Researchers estimated that 7,500 lakes turned brown and began emitting carbon after the fall. But the emissions weren't the only concern for scientists: these lakes also provide residents of Greenland with drinking water, which could be compromised by the change

[kitty-filez574]

Sub-afton wth

If purple guy kills with his springbonnie suit on, would subspace kill with his cutiespace costume on?

Yeah so my friend camw up with the idea of this and i made a little design on the biograft version for it

I might remake this from all i know, if i can. These doodles are old btw (like from a week ago?)

[ravings-of-a-mad-scientist]

PNAS is my favorite journal acronym. “pee-nas”

[sejareluzente]

É próprio da natureza humana o comportamento gregário, pois é na relação que o ser cria sua identidade e reconhece sua subjetividade.

[allthingslinguistic]

As part of this study, Pouw instructed 3 men and 3 women to make a monotone sound, such as ‘aaaa’, while using all kinds of different hand and arm movements. After that, 30 subjects were asked to listen to the recordings. Not only did they guess which movements were made, but, in many cases, they were also able to mimic these movements simultaneously. It is easy to measure differences in pitch and volume. It is remarkable that listeners unconsciously identify at what point movement causes these differences. "The subjects not only picked up the speed of the movement, but they also heard the location of the movement."

When people move their hands and arms while using their voices, listeners are able to hear it. Even without seeing the messenger, we can pick up each other’s body language. Wim Pouw of the Donders Institute has published this finding in PNAS this week.