As per a new study, humans are to be blamed for rapid melting of two-thirds of the rapid melting of the glaciers of the world.
Till the mid of 20th century, no human fingerprint was seen by scientists. However, since the year 1991, around sixty nine percent of the rapid increase in the melt can be associated to humans, as per a climate scientist at Austria’s University of Innsbruck, Ben Marzeion.
He said that there has been a rapid shrink in the glaciers now and it is fair to say that a majority of it is man-made. Factors responsible for this include soot pollution, changes in land use near the glaciers and global warming from burning of gas, oil and coal. Marzeion said that the Glaciers in Alps and Alaska have more human-caused melting than global average.
With this research, it was first calculated as to how much of this melting can be attributed to humans. Since the last 2 decades, around 295 billion tons of ice melts each year on an average owing to human causes. At the same time 130 billion tons of ice melts due to natural causes.
Glaciers alone, account for four-tenths of an inch of rise in sea level every decade. There are bigger increases that result from melting of ice sheets, that are different than the glaciers.
Multiple computer simulations were run for seeing how much melting is there from all causes and then was done again for seeing how much melting was there if there was inclusion of only natural causes. Humans caused the only difference.
As per another scientist, Ted Scambos, of National Snow and Ice Data Center, not all human caused melting results from global warming from fossil fuels. The biggest factor is global climate change.
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