More than two-thirds of the recent melting of the world's glaciers can be blamed on humans, according to a new study released this week.
Glaciers have been melting since the mid-19th century when the period known as the Little Ice Age came to a close.
Scientists looked at how glaciers changed in size at different points in history by using computers to map data about areas in order to see how the rate's been changed by humans, according to Press Association.
A global glacier database called the Randolph Glacier Inventory made their study possible.
In 1851 through 2010, only one quarter of glacial mass loss was due to human-induced climate, they determined.
But during the last two decades of that period, human contribution jumped to about two thirds, according to Press Association.
The researchers used climate computer simulations to map glacier changes around the world outside Antarctica.
"In our data we find unambiguous evidence of anthropogenic contribution to glacier mass loss," said Ben Barzeion, according to Press Association.
Their research appeared in the journal Science this week.
"In the 19th and first half of 20th century we observed that glacier mass loss attributable to human activity is hardly noticeable but since then has steadily increased," Barzeion added.
"While we keep factors such as solar variability and volcanic eruptions unchanged, we are able to modify land use changes and greenhouse gas emissions in our models. In our data we find unambiguous evidence of anthropogenic contribution to glacier mass loss."
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