Climate change is causing a major collapse across the world in the icy landscapes. This includes the western United States and Canada, where ice disappears not only, but it does at a faster pace than it was only a decade ago, according to a new study published this week in Geophysical Research.
Faster melting may be due in part to the change in weather conditions in recent years, which works in line with rising temperatures to accelerate during the death of the ice
Icebergs in North America are the remains of the Ice Age. They cling to high peaks from British Columbia to Montana where the snow fills them every winter and the temperatures are cool enough to keep them more or less equilibrated for centuries. But now people have thrown that equation out of the blow by pouring carbon dioxide and other greenhouse gases into the atmosphere. The result is the death of ice.
There are ice observation stations that measure what is happening all over the West, but the new study uses satellites to see how much ice has changed. By detecting minor changes in height from year to year in 2000-1
More than 80% of the glaciers showed a loss in height, indicating that they are losing ice faster than the snow that can fill the melting. The most dramatic thinning is observed in the northern parts of the interior of British Columbia
From 2000 to 2009, the western part of North America lost an average of 2.9 gigatons of ice annually or about 1.16 million Olympic basins. But from 2009-18, ice loss increased fourfold to 12.3 gigatons per year. Researchers attribute part of this change in weather conditions to warmer and drier weather on the southern coast of British Columbia, where half the ice of the survey area lives.
"We still do not know what the origin of the jet change is," Menounos said. "It may be natural variability or a manifestation of man-made climate change. More work is needed on this topic. "
But losing ice will not be possible with the rise in background temperatures. This is important for the lowlands. Keep away the fact that some of the most beautiful landscapes on the continent and the plants and animals that call them home are devastated by climate change. These glaciers also store a huge amount of water used for crops and drinking while providing economic benefits by attracting tourists and skiers from afar. Their disappearance threatens to dramatically change the overall economies, which is part of what makes climate forecasts in places like Glacier National Park free from ice until the 1930s, so worrying.