Posted on May 27, 2015 by Bob Berwyn
‘The signal of future glacier change in the region is clear: continued mass loss from glaciers is likely’
Researchers taking measurements in the Mera Glacier region of the Dudh Kosi basin. Photo courtesy Patrick Wagnon.
Scientists are trying to pinpoint the impacts of global warming on Himalayan glaciers and regional water supplies. Photo courtesy Nasa Earth Observatory.
FRISCO —In the worst-case global warming scenario, glaciers in the Mt. Everest region — the roof of the world — could shrink between 70 percent and 99 percent by 2100, scientists said this week, waring of dire downstream consequences for millions of people who rely on water from those ice fields.
“The signal of future glacier change in the region is clear: continued and possibly accelerated mass loss from glaciers is likely given the projected increase in temperatures,” said Joseph Shea, a glacier hydrologist at the International Centre for Integrated Mountain Development, Kathmandu, Nepal, and leader of the study. Continue reading
Filed under: climate and weather, climate change, global warming | Tagged: climate change impacts, Dudh Kosi River Basin, glaciers, global warming, Himalaya, Mt Everest, Nepal | Leave a comment »
Posted on January 17, 2014 by Bob Berwyn
New study documents pace of ice loss in world’s tallest mountain
By Summit Voice
FRISCO — Melting Himalyan glaciers may not be causing a direct rise in sea level, but in some cases, the water is causing lakes overflow, flooding valuable agricultural land.
Glaciers are important indicators of climate change. Global warming causes mountain glaciers to melt, which, apart from the shrinking of the Greenlandic and Antarctic ice sheets, is regarded as one of the main causes of the present global sea-level rise.
Tibet’s glaciers have been losing mass at the rate of about 16 gigatons per year for the past decade. That loss is spread across about 80 percent of Tibet’s glaciers, according to Tobias Bolch, a glaciologist from the University of Zurich. That’s more than four times the volume of water in Lake Zurich and around six percent of the total loss in mass of all the glaciers on Earth. Continue reading
Filed under: climate and weather, global warming | Tagged: glaciers, global warming, Himalaya, sea lv | 1 Comment »
Posted on May 15, 2013 by Bob Berwyn
Temperatures up, precipitation down in key Asian watersheds
A new study finds a decline in snow and ice on Mount Everest (second peak from left) and the national park surrounding it. Photo courtesy Pavel Novak.
FRISCO — Even at the frozen roof of the world in the mighty Himalaya, global warming is evident.
The snow line in the Mt. Everest region has moved uphill by 180 meters (590 feet). Glaciers in the region are shrinking, some by as much as 13 percent in the past 50 years, and precipitation has declined, according to a team of scientists who will present their findings this week at the Meeting of the Americas in Cancún, Mexico.
Glaciers smaller than one square kilometer are disappearing the fastest and have experienced a 43 percent decrease in surface area since the 1960s, according to Sudeep Thakuri, who is leading the research as part of his PhD graduate studies at the University of Milan in Italy. Based on the detailed measurements of satellite images, the pace of melting speeding up, Thakuri said. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: climate change, glaciers, global warming, Himalaya, Intergovernmental Panel on Climate Change, Mt Everest, Sagamartha National Park | 1 Comment »
Posted on November 17, 2012 by Bob Berwyn
Graduate student Josh Maurer and professor Summer Rupper on a glacier near Rinchen Zoe La, Bhutan. Photo courtesy Brigham Young University.
Snowfall rates would need to double to slow glacial retreat
By Summit Voice
SUMMIT COUNTY — After significant warming during half century, about 10 percent of Bhutan’s glaciers are likely to disappear within the next few decades — even if regional and global temperatures were to stabilize at current levels.
“These particular glaciers have seen so much warming in the past few decades that they’re currently playing lots of catch up,” Brigham Young University geology professor Summer Rupper said after studying climate and glaciers in the Himalaya.
Rupper’s most conservative findings the amount of melt water coming off these glaciers could drop by 30 percent. Increasing temperatures are just one culprit behind glacier retreat. A number of climate factors such as wind, humidity, precipitation and evaporation can affect how glaciers behave. With some Bhutanese glaciers as long as 13 miles, an imbalance in any of these areas can take them decades to completely respond. Continue reading
Filed under: climate and weather, Environment, global warming, water | Tagged: Bhutan, Brigham Young University, climate change, global warming, Himalaya, Lamont–Doherty Earth Observatory, melting glaciers | Leave a comment »
Posted on April 20, 2012 by Bob Berwyn
Some glaciers have expanded in the past decade, but concerns remain about growing glacial lakes in the region
Retreating mountain glaciers in Bhutan. This satellite image shows the termini of several glaciers in the Himalayan mountains of Bhutan. The glaciers have been receding over the past few decades, and lakes have formed on the surfaces and near the termini of many of the glaciers. IMAGE COURTESY NASA.
By Summit Voice
SUMMIT COUNTY — Glaciers in the Himalaya are not shrinking as fast as once predicted by the Intergovernmental Panel on Climate Change.
Some glaciers in the Karakoram Range have grown slightly in the past decade, according to a team of European researchers who recently completed one of the most detailed surveys of the region to-date.
But there are still valid concerns about variability that could leave some valleys dry, at least on a seasonal basis.
“The majority of the Himalayan glaciers are shrinking, but much less rapidly than predicted earlier,” said Tobias Bolch, of the University of Zurich and Dresden University of Technology. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: climate change, glaciers, global warming, Himalaya, Intergovernmental Panel on Climate Change, Karakoram | 1 Comment »
Posted on September 30, 2011 by Bob Berwyn
Khardung La is one of the highest passes in the world
A SECMOL volunteer sits atop one of our buses as we wait for the pass to open.
By Garrett Palm
Oxygen deprived, I mistake the older, leather-clad German couple’s “Sprechen sie Deutsch?” as asking if I speak Dutch. I sing a happy birthday song in the wrong language, learned from my mother, which they greet with polite, confused laughter. Continue reading
Filed under: Morning photo, photography, Travel | Tagged: Asia, Garrett Palm, Himalaya, India, Khardung La, Ladakh, Leh, Nubra Valley, Travel | Leave a comment »
Posted on September 1, 2010 by Bob Berwyn
Glaciers in the Himalaya appear to be in a downward spiral, melting under the onslaught of global warming.
Water supplies threatened, flooding risks also growing
By Summit Voice
SUMMIT COUNTY — U.S. Geological Survey scientists recently teamed up with colleagues from around the world to thoroughly survey the glaciers of Asia, and the news is not good for millions of people who rely on runoff from those high mountain zones.
Many of Asia’s glaciers are retreating as a result of climate change, the study concluded. The rapid melting of the glaciers will impact water supplies across huge areas, increase the rate of sea level rise and heighten the likelihood of sudden floods.
In Bhutan, 66 glaciers have receded by 8.1 percent over the last 30 years. Continue reading
Filed under: Geology, global warming | Tagged: Bhutan, climate change, Gangotri Glacier, Himalaya, India | Leave a comment »