southern ocean already losing ability to absorb co - absorption of water

by:Demi     2019-09-05
southern ocean already losing ability to absorb co  -  absorption of water
According to a new study, one of the world's largest carbon absorption pools, Kathryn braxitong has stopped absorbing the carbon dioxide that humans emit into the atmosphere.
Researchers say global warming has caused the Southern Ocean to become more humid, stirring the waters so that they can't absorb carbon dioxide at the rate we produce it.
The impact is profound.
Reached, and again hinted that the forecast of the Inter-Governmental Panel on Climate Change was conservative & colon;
The temperature may be higher than predicted.
Colin Le quire colleagues at East Anglia University in the UK say their research shows that the climate feedback loop-more carbon dioxide in the atmosphere can cause warming, in turn, more carbon dioxide is released from the ocean-expected 20 to 40 years ago.
"It's serious," said Le quire.
"All climate models predict that this feedback will continue and strengthen this century.
Carbon on Earth absorbs half of human carbon.
Carbon emissions generated
The Southern Ocean is one of the largest sinks, absorbing 15% of carbon dioxide emissions.
The gas dissolves into the surface water of the ocean and is stored deep in the cool, where it remains for much longer than on a warm surface.
But since 1958, the Southern Ocean has become colder and the sea is mixed together, bringing cool carbon.
They release the gas into the atmosphere and fill the water on the surface of the water.
Le quré's team found that this effectively saturates the Southern Ocean reservoir, so it is unable to absorb carbon dioxide as quickly as it is emitted by human activity.
The researchers spent 24 years monitoring carbon dioxide globally as it was pumped into the atmosphere and absorbed by natural sinks.
They obtained most of the data from 40 air sampler networks around the world, 11 of which are located inside and around the Southern Ocean.
"We found no change in the South Ocean reservoir within 24 years," Le qüré told the New Scientist . ".
"This is surprising because, at the same time, carbon dioxide emissions have increased by 40%.
As the source of carbon dioxide increases, we expect the reservoir to increase as well.
"The ice core study of climate and atmosphere over the past 800,000 years shows that during the previous warming period, higher temperatures have absorbed carbon dioxide from ocean reservoirs.
However, the climate model suggests that this effect will not occur for at least 20 years.
"For me, we can already detect the effects of climate change, which is very scary," said Le quire . ".
By releasing more carbon dioxide into the atmosphere, people are participating in a "big and dangerous experiment," she said ".
The increase in wind is caused by human beings.
The auxiliary consumption of ozone causes the upper atmosphere to cool, and then the cold air drops to produce the air flow.
Global warming has also increased the pressure difference that causes climate warming, thus increasing climate uncertainty.
"Since the beginning of the Industrial Revolution, the world's oceans have absorbed about 500 tons of carbon that humans emit into the atmosphere.
In a warm world, the possibility that the South Ocean-the strongest ocean sink-is weakening is worrying, "said Chris Lapley, director of the British Antarctic Survey.
Another study, published in the journal Science, along with the study by Le qüré, also showed a weakening of the ocean sink.
Rafael Benitez-Claudia
Nelson of the University of South Carolina and his colleagues studied the phenomenon of rotating the ocean, the vortex, how it affects the biological mechanism of carbon stored in the ocean.
These mechanisms involve the absorption of carbon dioxide through photosynthesis plankton, which is an important part of the ocean reservoir.
The vortex is a 200-kilometer-long vortex on the water surface, absorbing nutrients from deep water and feeding a large amount of plankton in surface water.
It was once thought that the flower would replenish the Ocean sink, because when part of the plankton died, it would fall to the bottom of the ocean and take away the carbon it absorbed from the atmosphere. But Benitez-
Nelson found that in the warm waters, bacteria and tiny floating animals, such as shrimps, located in the center of the whirlpool, feed on plant plankton and, therefore, recycle their carbon, and prevent it from being stored on the ocean bed.
Journal of Science (DOI: 10. 1126/science. 1136188 and 10. 1126/science. 1136221)
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