Seals helped scientists explain huge holes in the Antarctic ice. Read more NBCNewsMACH:
. Cambell said that a regular climate variation that can carry winds either farther from the Antarctic coast, in which case they become weaker, or nearer to the coast, becoming stronger. When the variability shifts the winds closer and stronger, it creates more upwelling of warm, salty water from deep in the Weddell Sea to the colder, fresher ocean surface.
"The ocean was unusually salty at the surface, and that made the barrier to mixing a lot weaker," Campbell said. Now all the ocean needed was a little stir. And the winters of 2016 and 2017 provided the spoon. Major storms created wind and waves that mixed the water vertically, bringing up warm water from the ocean bottom that melted the sea ice.
The effects of the polynyas that formed are still somewhat mysterious. The researchers found that the interior of the ocean beneath them cooled by 0.36 degrees Fahrenheit . That released heat might change local weather patterns and even shift winds globally, Campbell said. More concerning, he said, is that the deep ocean water exposed to the atmosphere during a polynya is potentially carbon rich. Deep Antarctic waters are the graveyards for marine life, which release carbon as they decay. If that carbon enters the atmosphere via polynyas, these open-water openings could contribute slightly toWhether polynyas do so is still up in the air, Campbell said, but the new study should help scientists pin down more details of Antarctica's changing climate.
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
Rapper 21 Savage donates $25K to organization that helped him during ICE arrestRapper 21 Savage donates $25K to the nonprofit legal advocacy organization that helped him when he was arrested by ICE
Consulte Mais informação »
Grilled Cheese Egg in a Hole Recipe on Food52Can't decide whether to make a grilled cheese or an egg in a hole? Make both! For this recipe, I use a pro-tip I learned from Five Guys: use mayonnaise instead of butter on the outside of the grilled cheese. It's way more spreadable and adds just a little oomph of flavor to the sandwich.
Consulte Mais informação »
Alaskans find more dead seals along warming Arctic SeaAt least 60 dead seals have been discovered along beaches of the Bering Sea and ...
Consulte Mais informação »
Dozens of dead seals washed up on the coast of AlaskaAt least 60 dead ice seals have been found along the coast of the Bering and Chukchi seas in Alaska, according to the National Oceanic and Atmospheric Administration.
Consulte Mais informação »
How To De-Stress In 5 Minutes Or Less, According To A Navy SEALQuell daily stress and improve focus just like the Navy SEALS do with these easy-to-do controlled breathing techniques.
Consulte Mais informação »
The repercussions of the US sending 1,000 extra troops to Poland, explainedThe US has agreed to send 1,000 additional troops to Poland but stopped short of establishing a new base there. What does this mean for US-Poland relations and how does Russia play into this?
Consulte Mais informação »