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Climate change: instability spreads in the western Antarctic ice sheet



She discovered that the ice cover slightly exploded to 122 meters in some places, while thinning left unstable glaciers, according to scientists from the University of Leeds in England

. (breaking a piece of ice) reduces its mass faster than it can be replenished with snowfall, and thinning has spread to 24% of Western Antarctica since 1992.

The largest ice floods in the region, the Pine Island and the Thwaites Glaciers, lose ice at a rate of less than the time when measurements began.

The team of researchers from the British Center for Polar Observation and Modeling (CPOM), based at the University, used a 25-year observation satellite and climatic models to monitor the evolution of snow and ice in the area

  The study considers changes in ice thickness since 1[ads1]992- 2017 gg.

"In some areas of Antarctica, the ice cover is leaking in extraordinary volumes, and therefore we set ourselves the task of showing how climate change has changed, and

And ice losses increase sea levels worldwide," Shepherd added. "In general, Ice loss from the East and West Antarctica has made 4.6 mm for the global sea level rise since 1992, "he said.

  The world's largest glacier shelf melts 10 times faster than the average

Marcus Engdahl of the European Space Agency, a co-author of the study, emphasized the importance of satellite missions in the study of our planet.

"The polar regions are hostile environments and it is extremely difficult to access," he said in a statement.

"Because of this, space perspective is an important tool for tracking the effects of climate change."

A complete study was published in the journal Geophysical Research Letters, and follows from previous studies that emphasized the role of ocean water that was warmed by the sun while melting the Antarctic ice shelf

The Northwest sector of the Ross ice shelf in Antarctica, which in general approximately equal to the size of France, melting 10 times faster than the overall average level of ocean water According to experts from the University of Cambridge, heated by the sun

"The stability of ice shelves is usually associated with their influence on the heat deeply in ocean water, but we found that solar heated surface water also plays a crucial role in the melting of ice shelves, "- said the study's lead author Craig Stewart of the National Institute of Water and Atmospheric Research in New Zealand


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