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Friday, December 31, 2010
"Mount Everest's Sherpas Ring Warning Bell on Global Warming "
(2010 Top Environment Alert From www.stumbleupon.com)
When sherpas ring the warning bell on climate change the world should listen: Mount Everest is becoming increasingly dangerous to climb because global warming is melting glacier ice along its slopes, according to Apa, a Nepalese Sherpa who grew up in the foothills to Mount Everest, reached the 29,035-foot (8,850-metre) summit on Saturday for the 20th time, breaking his own previous world record for 19 ascents.Rising temperatures have melted much of the ice on the steep trail to the summit and climbers are struggling to get traction on the exposed rock surface.
A recent report by scientists at University College London said the Himalayan glaciers are retreating faster than many others around the world, at rates ranging from 10 to 60 metres per year. Professor Steve Edwards, an earth scientist who coauthored the report, titled "The Waters of the Third Pole," said the effects of glacial melting posed a real risk to climbers.
“The general trend shows that the Himalayan glaciers as a whole are melting faster than many others. It is probably the fastest rate of melting in the world,” he said.
“The result is that in the summer months there is going to be a lot of slush on the ice fields. There is also the risk of glacial outburst floods, where the meltwater tops the bank of sediment left behind by the glacier during a period of intense melting and crashes down the river valley, destroying everything in its path.”
The melting ice has also exposed deep crevasses which climbers could fall into, and experts have warned that people scaling the mountain risk being swept away by “outburst floods” from rising volumes of glacial meltwater.
After returning to Kathmandu on Tuesday, Apa said: "The rising temperature on the mountains has melted much ice and snow on the trail to the summit. It is difficult for climbers to use their crampons on the rocky surfaces." He said there was hardly any exposed rock on the trail to the summit when he first climbed Everest in 1989, but now the slopes are dotted with bare rocks.
Climbing-mount-everest-10 The world’s highest mountain is becoming an increasingly popular tourist destination, with a procession of novice climbers scaling the summit with the help of highly expert Sherpas like Apa. But experts have warned that many amateur climbers may not be aware of the risks they face in tackling Everest.
.Casey Kazan via The Telegraph
When sherpas ring the warning bell on climate change the world should listen: Mount Everest is becoming increasingly dangerous to climb because global warming is melting glacier ice along its slopes, according to Apa, a Nepalese Sherpa who grew up in the foothills to Mount Everest, reached the 29,035-foot (8,850-metre) summit on Saturday for the 20th time, breaking his own previous world record for 19 ascents.Rising temperatures have melted much of the ice on the steep trail to the summit and climbers are struggling to get traction on the exposed rock surface.
A recent report by scientists at University College London said the Himalayan glaciers are retreating faster than many others around the world, at rates ranging from 10 to 60 metres per year. Professor Steve Edwards, an earth scientist who coauthored the report, titled "The Waters of the Third Pole," said the effects of glacial melting posed a real risk to climbers.
“The general trend shows that the Himalayan glaciers as a whole are melting faster than many others. It is probably the fastest rate of melting in the world,” he said.
“The result is that in the summer months there is going to be a lot of slush on the ice fields. There is also the risk of glacial outburst floods, where the meltwater tops the bank of sediment left behind by the glacier during a period of intense melting and crashes down the river valley, destroying everything in its path.”
The melting ice has also exposed deep crevasses which climbers could fall into, and experts have warned that people scaling the mountain risk being swept away by “outburst floods” from rising volumes of glacial meltwater.
After returning to Kathmandu on Tuesday, Apa said: "The rising temperature on the mountains has melted much ice and snow on the trail to the summit. It is difficult for climbers to use their crampons on the rocky surfaces." He said there was hardly any exposed rock on the trail to the summit when he first climbed Everest in 1989, but now the slopes are dotted with bare rocks.
Climbing-mount-everest-10 The world’s highest mountain is becoming an increasingly popular tourist destination, with a procession of novice climbers scaling the summit with the help of highly expert Sherpas like Apa. But experts have warned that many amateur climbers may not be aware of the risks they face in tackling Everest.
.Casey Kazan via The Telegraph
Sunday, December 26, 2010
"World's biggest snake threatened by backpackers"
From the Telegraph.UK:
By Michael Howie, La Paz
But for the anacondas that live in the swamps surrounding the Yacuma River in northern Bolivia, this invasion of gap year travellers and other hardy tourists is proving disastrous.
Biologists say the entire population of anacondas in one of the jewels of the Amazon basin will be wiped out within three years because of the deadly effect on the snakes of the insect repellant used by most backpackers to help protect against malaria.
The number of tourists going on tours of the pampas that snake there way through jungle and grasslands 250 miles north of La Paz has exploded from a few hundred to nearly 12,000 a year in the past decade.
Travellers are enticed by the promise of getting up close and personal with the world's largest snake - sometimes picking them up and hlding them - as well as swimming with river dolphins, catching pirhanas, and spotting monkeys, sloths and an array of other flora and fauna.
But sightings of the snake are becoming increasingly elusive and as many as 30 of the awe-inspiring creatures, which can measure up to 30ft in length and are known to strangle and devour prey as diverse as caiman crocodiles and cows, are being found dead every year, according to local guides.
Roberto Justiniano, a tour guide and biologist working closely with other scientists to assess the impact of the unrestrained tourism boom, revealed that the growing quantity of toxins being washed into the waterways from travellers is proving too much for the anacondas.
"The high-strength insect repellant that tourists use to protect themselves from mosquitos is absolutely fatal to the anacondas.
"They are amphibians and breath through their skin. The insect repellant, along with some types of sun cream, is extremely toxic. It is getting washed into the pampas and left in the swamps where tourists are hunting for the snakes.
"We are finding between 25 and 30 dead anacondas which have been poisoned. It is terrible."
Amphibians, such as snakes and frogs, are highly susceptible to the chemicals contained in many types of insect repellant, in particular those that contain DEET. This is partly because they breathe and absorb water through their skin, providing an easier way for contaminants to enter the animal's body. Environmentalists recommend using safer insect repellants based on natural oils, but many tourists complains these are less effective.
Zoologists estimate that only around 200 anacondas remain in the Yacuma River swamps, a sharp fall from the population of nearly 1,000 a few years ago.
"A few years years ago you had a 90 per cent chance of seeing anacondas - maybe three or four together. Now you are very lucky if you see one."
He added: "A study has been carried out by other biologists which shows the ecosystem will collapse in three years if things continue as they are."
The fear is that insects, fish and smaller amphibians would be wiped out within the river basin, resulting in the collapse of the entire food chain.
By Michael Howie, La Paz
But for the anacondas that live in the swamps surrounding the Yacuma River in northern Bolivia, this invasion of gap year travellers and other hardy tourists is proving disastrous.
Biologists say the entire population of anacondas in one of the jewels of the Amazon basin will be wiped out within three years because of the deadly effect on the snakes of the insect repellant used by most backpackers to help protect against malaria.
The number of tourists going on tours of the pampas that snake there way through jungle and grasslands 250 miles north of La Paz has exploded from a few hundred to nearly 12,000 a year in the past decade.
Travellers are enticed by the promise of getting up close and personal with the world's largest snake - sometimes picking them up and hlding them - as well as swimming with river dolphins, catching pirhanas, and spotting monkeys, sloths and an array of other flora and fauna.
But sightings of the snake are becoming increasingly elusive and as many as 30 of the awe-inspiring creatures, which can measure up to 30ft in length and are known to strangle and devour prey as diverse as caiman crocodiles and cows, are being found dead every year, according to local guides.
Roberto Justiniano, a tour guide and biologist working closely with other scientists to assess the impact of the unrestrained tourism boom, revealed that the growing quantity of toxins being washed into the waterways from travellers is proving too much for the anacondas.
"The high-strength insect repellant that tourists use to protect themselves from mosquitos is absolutely fatal to the anacondas.
"They are amphibians and breath through their skin. The insect repellant, along with some types of sun cream, is extremely toxic. It is getting washed into the pampas and left in the swamps where tourists are hunting for the snakes.
"We are finding between 25 and 30 dead anacondas which have been poisoned. It is terrible."
Amphibians, such as snakes and frogs, are highly susceptible to the chemicals contained in many types of insect repellant, in particular those that contain DEET. This is partly because they breathe and absorb water through their skin, providing an easier way for contaminants to enter the animal's body. Environmentalists recommend using safer insect repellants based on natural oils, but many tourists complains these are less effective.
Zoologists estimate that only around 200 anacondas remain in the Yacuma River swamps, a sharp fall from the population of nearly 1,000 a few years ago.
"A few years years ago you had a 90 per cent chance of seeing anacondas - maybe three or four together. Now you are very lucky if you see one."
He added: "A study has been carried out by other biologists which shows the ecosystem will collapse in three years if things continue as they are."
The fear is that insects, fish and smaller amphibians would be wiped out within the river basin, resulting in the collapse of the entire food chain.
"Bundle Up, It’s Global Warming"
Today - Washington, DC was getting 10-12 inches of snow again (like last year). The snow extended as far south as Savannah Georgia. We got a nice Christmas Eve snow before it headed east.
From the New York Times:
By JUDAH COHEN
Lexington, Mass.
THE earth continues to get warmer, yet it’s feeling a lot colder outside. Over the past few weeks, subzero temperatures in Poland claimed 66 lives; snow arrived in Seattle well before the winter solstice, and fell heavily enough in Minneapolis to make the roof of the Metrodome collapse; and last week blizzards closed Europe’s busiest airports in London and Frankfurt for days, stranding holiday travelers. The snow and record cold have invaded the Eastern United States, with more bad weather predicted.
All of this cold was met with perfect comic timing by the release of a World Meteorological Organization report showing that 2010 will probably be among the three warmest years on record, and 2001 through 2010 the warmest decade on record.
How can we reconcile this? The not-so-obvious short answer is that the overall warming of the atmosphere is actually creating cold-weather extremes. Last winter, too, was exceptionally snowy and cold across the Eastern United States and Eurasia, as were seven of the previous nine winters.
For a more detailed explanation, we must turn our attention to the snow in Siberia.
Annual cycles like El Niño/Southern Oscillation, solar variability and global ocean currents cannot account for recent winter cooling. And though it is well documented that the earth’s frozen areas are in retreat, evidence of thinning Arctic sea ice does not explain why the world’s major cities are having colder winters.
But one phenomenon that may be significant is the way in which seasonal snow cover has continued to increase even as other frozen areas are shrinking. In the past two decades, snow cover has expanded across the high latitudes of the Northern Hemisphere, especially in Siberia, just north of a series of exceptionally high mountain ranges, including the Himalayas, the Tien Shan and the Altai.
The high topography of Asia influences the atmosphere in profound ways. The jet stream, a river of fast-flowing air five to seven miles above sea level, bends around Asia’s mountains in a wavelike pattern, much as water in a stream flows around a rock or boulder. The energy from these atmospheric waves, like the energy from a sound wave, propagates both horizontally and vertically.
As global temperatures have warmed and as Arctic sea ice has melted over the past two and a half decades, more moisture has become available to fall as snow over the continents. So the snow cover across Siberia in the fall has steadily increased.
The sun’s energy reflects off the bright white snow and escapes back out to space. As a result, the temperature cools. When snow cover is more abundant in Siberia, it creates an unusually large dome of cold air next to the mountains, and this amplifies the standing waves in the atmosphere, just as a bigger rock in a stream increases the size of the waves of water flowing by.
The increased wave energy in the air spreads both horizontally, around the Northern Hemisphere, and vertically, up into the stratosphere and down toward the earth’s surface. In response, the jet stream, instead of flowing predominantly west to east as usual, meanders more north and south. In winter, this change in flow sends warm air north from the subtropical oceans into Alaska and Greenland, but it also pushes cold air south from the Arctic on the east side of the Rockies. Meanwhile, across Eurasia, cold air from Siberia spills south into East Asia and even southwestward into Europe.
That is why the Eastern United States, Northern Europe and East Asia have experienced extraordinarily snowy and cold winters since the turn of this century. Most forecasts have failed to predict these colder winters, however, because the primary drivers in their models are the oceans, which have been warming even as winters have grown chillier. They have ignored the snow in Siberia.
Last week, the British government asked its chief science adviser for an explanation. My advice to him is to look to the east.
It’s all a snow job by nature. The reality is, we’re freezing not in spite of climate change but because of it.
From the New York Times:
By JUDAH COHEN
Lexington, Mass.
THE earth continues to get warmer, yet it’s feeling a lot colder outside. Over the past few weeks, subzero temperatures in Poland claimed 66 lives; snow arrived in Seattle well before the winter solstice, and fell heavily enough in Minneapolis to make the roof of the Metrodome collapse; and last week blizzards closed Europe’s busiest airports in London and Frankfurt for days, stranding holiday travelers. The snow and record cold have invaded the Eastern United States, with more bad weather predicted.
All of this cold was met with perfect comic timing by the release of a World Meteorological Organization report showing that 2010 will probably be among the three warmest years on record, and 2001 through 2010 the warmest decade on record.
How can we reconcile this? The not-so-obvious short answer is that the overall warming of the atmosphere is actually creating cold-weather extremes. Last winter, too, was exceptionally snowy and cold across the Eastern United States and Eurasia, as were seven of the previous nine winters.
For a more detailed explanation, we must turn our attention to the snow in Siberia.
Annual cycles like El Niño/Southern Oscillation, solar variability and global ocean currents cannot account for recent winter cooling. And though it is well documented that the earth’s frozen areas are in retreat, evidence of thinning Arctic sea ice does not explain why the world’s major cities are having colder winters.
But one phenomenon that may be significant is the way in which seasonal snow cover has continued to increase even as other frozen areas are shrinking. In the past two decades, snow cover has expanded across the high latitudes of the Northern Hemisphere, especially in Siberia, just north of a series of exceptionally high mountain ranges, including the Himalayas, the Tien Shan and the Altai.
The high topography of Asia influences the atmosphere in profound ways. The jet stream, a river of fast-flowing air five to seven miles above sea level, bends around Asia’s mountains in a wavelike pattern, much as water in a stream flows around a rock or boulder. The energy from these atmospheric waves, like the energy from a sound wave, propagates both horizontally and vertically.
As global temperatures have warmed and as Arctic sea ice has melted over the past two and a half decades, more moisture has become available to fall as snow over the continents. So the snow cover across Siberia in the fall has steadily increased.
The sun’s energy reflects off the bright white snow and escapes back out to space. As a result, the temperature cools. When snow cover is more abundant in Siberia, it creates an unusually large dome of cold air next to the mountains, and this amplifies the standing waves in the atmosphere, just as a bigger rock in a stream increases the size of the waves of water flowing by.
The increased wave energy in the air spreads both horizontally, around the Northern Hemisphere, and vertically, up into the stratosphere and down toward the earth’s surface. In response, the jet stream, instead of flowing predominantly west to east as usual, meanders more north and south. In winter, this change in flow sends warm air north from the subtropical oceans into Alaska and Greenland, but it also pushes cold air south from the Arctic on the east side of the Rockies. Meanwhile, across Eurasia, cold air from Siberia spills south into East Asia and even southwestward into Europe.
That is why the Eastern United States, Northern Europe and East Asia have experienced extraordinarily snowy and cold winters since the turn of this century. Most forecasts have failed to predict these colder winters, however, because the primary drivers in their models are the oceans, which have been warming even as winters have grown chillier. They have ignored the snow in Siberia.
Last week, the British government asked its chief science adviser for an explanation. My advice to him is to look to the east.
It’s all a snow job by nature. The reality is, we’re freezing not in spite of climate change but because of it.
Thursday, December 16, 2010
Eastern Arctic warming trend alarms scientists
From NunatsiaqOnline:
OTTAWA— You might think of scientists as calm and cool.
But the first three presenters during the opening session of the three-day ArcticNet conference in Ottawa sounded alarmed by the increasingly visible signs of Arctic warming and the limited amount of money that Canada will spend to understand what’s happening.
Ice has cracked up — once in a while taking Nunavut hunters with it. Lakes continue to dry up, while permafrost melts and the tundra is greening, 650 scientists, officials and northerners heard Dec. 15.
Observations from the ground in the Eastern Arctic, from places like Iqaluit — where ice in Frobisher Bay is only now forming — and views taken by satellites at 500 kilometres above the earth’s surface showed ArcticNet participants that ice formation in 2010 is abnormally slow.
So far this winter, it’s been “very, very slow,” and like last year “very late in freezing up,” said Trudy Wohlleben, an ice forecaster with the Canadian Ice Service.
The most “unusual things [are] going on in the winter,” Wohlleben said.
Nothing is progressing as it used to, she said, listing a string of peculiar happenings:
• air temperatures 20 C above normal at the beginning of the year in the Baffin Island communities of Clyde River and Qikiqtarjuaq;
• large ice cracks south of Resolute Bay last January, which caused a hunter to float off on an ice floe;
• and other cracks in land-fast ice spreading throughout the High Arctic islands, endangering research stations, causing problems for polar trekkers and swallowing up a Twin Otter.
This past spring, ice on Hudson Bay broke up three to four weeks earlier, and the Nares Strait between Ellesmere Island and Greenland, which usually freezes fast from February to July, never froze up solid.
This year, looking ahead into 2011, may carry similar surprises, with recent air temperatures 20 C registering above average over the Foxe Basin, Wohlleben said.
Weak ice could also lead to more storms as ice cracks cause water temperatures to warm and then lead to even more ice break-up and more storms in a frightening loop.
What’s needed is more monitoring with more remote sensing devices like the buoys dropped on ice lands earlier this year, she said.
More monitoring of lakes and other fresh waterways also needs to be done, because they’re good indicators of climate change, said Frederick Wrona from the University of Victoria...
OTTAWA— You might think of scientists as calm and cool.
But the first three presenters during the opening session of the three-day ArcticNet conference in Ottawa sounded alarmed by the increasingly visible signs of Arctic warming and the limited amount of money that Canada will spend to understand what’s happening.
Ice has cracked up — once in a while taking Nunavut hunters with it. Lakes continue to dry up, while permafrost melts and the tundra is greening, 650 scientists, officials and northerners heard Dec. 15.
Observations from the ground in the Eastern Arctic, from places like Iqaluit — where ice in Frobisher Bay is only now forming — and views taken by satellites at 500 kilometres above the earth’s surface showed ArcticNet participants that ice formation in 2010 is abnormally slow.
So far this winter, it’s been “very, very slow,” and like last year “very late in freezing up,” said Trudy Wohlleben, an ice forecaster with the Canadian Ice Service.
The most “unusual things [are] going on in the winter,” Wohlleben said.
Nothing is progressing as it used to, she said, listing a string of peculiar happenings:
• air temperatures 20 C above normal at the beginning of the year in the Baffin Island communities of Clyde River and Qikiqtarjuaq;
• large ice cracks south of Resolute Bay last January, which caused a hunter to float off on an ice floe;
• and other cracks in land-fast ice spreading throughout the High Arctic islands, endangering research stations, causing problems for polar trekkers and swallowing up a Twin Otter.
This past spring, ice on Hudson Bay broke up three to four weeks earlier, and the Nares Strait between Ellesmere Island and Greenland, which usually freezes fast from February to July, never froze up solid.
This year, looking ahead into 2011, may carry similar surprises, with recent air temperatures 20 C registering above average over the Foxe Basin, Wohlleben said.
Weak ice could also lead to more storms as ice cracks cause water temperatures to warm and then lead to even more ice break-up and more storms in a frightening loop.
What’s needed is more monitoring with more remote sensing devices like the buoys dropped on ice lands earlier this year, she said.
More monitoring of lakes and other fresh waterways also needs to be done, because they’re good indicators of climate change, said Frederick Wrona from the University of Victoria...
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