Study shows varying global warming impacts in different mountain areas

Elevation of glaciers key to future runoff

Scientists are trying to pinpoint the impacts of global warming on Himalayan glaciers and regional water supplies. Photo courtesy Nasa Earth Observatory.
Scientists are trying to pinpoint the impacts of global warming on Himalayan glaciers and regional water supplies. Photo courtesy Nasa Earth Observatory.

Projecting global warming impacts in mountainous regions has been difficult for researchers, as drastic contrasts in terrain over short distances challenges climate models. Now, a new study by scientists from ETH Zurich and Utrecht University shows there will be different responses in different parts of the world.

In a new study, they looked closely at the water balance of two regions; the upper Langtang valley in Nepal and Juncal region of the central Andes in Chile, which are both important watersheds for millions of people. Both areas include peaks rising over 6,000 metres and glaciers that help sustain rivers. Continue reading “Study shows varying global warming impacts in different mountain areas”

Study shows sudden warming in the European Alps

Does industrial soot play a role in the meltdown of Alpine glaciers?

sadf
How long will the European Alps remain snow-clad? Photo courtesy NASA Earth Observatory.

By Summit Voice

With temperatures in the European Alps rising twice as fast as the global average, there’s little hope of saving some of the world’s most famous glaciers without immediate and significant cuts in greenhouse gas emissions.

And there’s little doubt that the warming is caused by those emissions. Findings from a new study show the sudden onset of warming about 30 years ago. The study, led by researchers with the Byrd Polar Research Center at Ohio State, offers new and compelling evidence that the Italian Alps are warming at an unprecedented rate. Continue reading “Study shows sudden warming in the European Alps”

Global warming is heating up Austria’s lakes

Waters expected to warm by up to degrees 3 degrees Celsius by mid-century

j
Global warming is projected to fundamentally alter the waters of famed Austrian lakes like the Mondsee, near Salzburg. Bob Berwyn photo.

By Bob Berwyn

Austria’s famed alpine lakes are facing fundamental change as global temperatures continue to warm. The Alpine region as a whole warmed three times as fast as the global average between 1980 and 1999.

Projected increases in water temperatures will likely alter basic structure, function and water quality in famed lakes like the Mondsee, near Salzburg, according to Dr. Martin Dokulil, a retired researcher from the Institute for Limnology at the University of Innsbruck in Austria.

Dokulil analyzed long-term data records for air temperature and surface water temperatures dating back to the mid-1960s from the Austrian Hydrological Yearbooks. He projected temperature trends for nine large lakes, finding that lake surface temperatures are likely to rise by up to 3 degrees Celsius by 2050 as a direct result of climate change. Continue reading “Global warming is heating up Austria’s lakes”