The ice sheets in the Antarctic clouds add solar energy to the Earth’s surface

The ice sheets in the Antarctic clouds add solar energy to the Earth's surface

Clouds were observed over the Southern Ocean in Jan. 29, 2018, during a field presentation about the University of Washington that studied summer coverage around Antarctica. Available: National Center for Atmospheric Research

Clouds come in many shapes, sizes and shapes, which determine their fate in the universe. New research led by the University of Washington shows that ice droplets combine to form ice cubes in the clouds of the South Seas, which greatly affects the clouds to return the sun to the sky. .

The paper, published March 4 in an open-access journal AGU progresssuggests that the introduction of this ice -splintering process improves the ability of high -altitude Earth models to shape clouds over the Southern Ocean – and therefore the models can shape the Earth’s atmosphere.

“The lower clouds of the South Seas should not be treated like water clouds,” said Rachel Atlas, lead author, a UW doctoral student in aerospace science. “The formation of snow in the South Seas in the lower clouds has a significant impact on the world’s resources and should be counted on geography.”

The results show that it is important to include a process in which the ice fragments combine with supercooled water droplets to release and then break, creating more ice particles. This would reduce the number of clouds, or reduce their visibility, and allow more sunlight to reach the ocean surface.

The difference between entering the details of the formation of snow in the clouds without entering them is 10 watts per square meter between 45 degrees south and 65 degrees south in summer, which is enough energy to have a serious effect on temperature.

ʻO nā ʻāpana hau i nā ao Antartika e hoʻonui i ka ikehu o ka lā i ka ʻili o ka Honua

The amount of snow in the clouds depends on the 3-D shape of the cloud and how much sun is seen in the sky. The flowers on the cloud in the south show that the sun is smaller (small hill) than the cloud in the north, so the sun has more energy on the surface of the ocean. On the left side, a large rimer, or blue sunburst, will draw water, dry it and then break it up to form pieces (blue sunburst). These pieces grow with a lot of dry water on them, so breaking up allows ice pieces to grow in clouds with the loss of water droplets. This is growing fast, more, falling snow (south side). Silver: Atlas et al. / AGU progress

The study used data from a 2018 space shuttle that flew over the clouds of the Southern Ocean, as well as data from NASA’s CERES satellite and Japan’s Himawari-8 satellite.

The formation of snow reduces the visibility of the clouds because the snow is formed, grows and falls out of the cloud in the best possible way.

“Ice covers a lot of the thin layer, so it reduces the surface area,” Atlas said. “Ice also dissolves some of the water in the thickest parts of the universe. So the ice particles reduce the cloud cover and reduce the rest of the cloud.”

February is summer in the Southern Ocean, where about 90% of the sky is covered with clouds, and at least 25% of those clouds are affected by the formation of clouds. the much -anticipated snow. It is important to correct the clouds, more and more new models are using less thickness to insert clouds and storms, in order to calculate the amount of solar radiation that can reach Earth.

“The Southern Ocean is the world’s largest heat, but its ability to carry heat from the atmosphere is about the temperature of the upper ocean, it’s about the cloud cover,” Atlas said.

Co -authors of the study are Chris Bretherton, a UW emeritus professor of aerospace science currently at the Allen Institute for AI in Seattle; Marat Khairoutdinov at Stony Brook University in New York; and Peter Blossey, a UW research scientist in aerospace science.


A song of snow and clouds: Ocean aerosols from the South Seas help the sky grow


More information:
RL Atlas et al, Hallett – Mossop Rime Splintering Dims Cumulus Clouds Over the Southern Ocean: New Insight From Nudged Global Storm – Resolving Simulations, AGU progress (2022). DOI: 10.1029 / 2021AV000454

Presented by the University of Washington

Directions: Solar energy added to Earth’s surface (2022, April 13) on 13 April 2022 from https://phys.org/news/2022-04-ice-shards-antarctic-clouds-solar .html

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