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GLACIERS IN SOUTH AMERICA AND ALASKA MELTING FASTER THAN THOSE IN EUROPE, SAYS NEW UNEP REPORT

Environmental Panorama
International
December of 2010


Scientists Warn that Many Low-Lying Ones Vital for Dryland Communities May Disappear Over Coming Decades
News Comes as Norway Announces Funding for Himalayan Climate Adaptation Initiative
Cancun/ Nairobi/Oslo, 7 December 2010-Glaciers in Patagonia, which cover parts of Argentina and Chile, followed by those in Alaska and its coastal mountain ranges have overall been losing mass faster and for longer than glaciers in other parts of the world.

These are among the findings of a new report compiled by the UN Environment Programme (UNEP) in partnership with scientists and research centres from around the world, including the Norwegian Polar Institute and Norut Alta.

The third fastest rate of loss is among glaciers in the northwest United States and southwest Canada followed by ones in the high mountains of Asia, including the Hindu Kush of the Himalayas, the Arctic and the Andes.

Overall Europe's glaciers have been putting on mass since the mid-1970s but this trend was reversed around the year 2000.

While the overall trend is down, higher levels of precipitation in some places has increased the mass and in some cases the size of glaciers, including in western Norway, New Zealand's South Island and parts of the Tierra del Fuego in South America.

Some mountain ranges are experiencing apparently contradictory effects. In smaller areas of the Karakoram range in Asia, for example, advancing glaciers have even over-ridden areas that have been ice-free for some 50 years.

Meanwhile, in the Tianshan and Himalayan mountain ranges, glaciers are in fact receding - and some rapidly.

"Accumulation of science shows us a clear general trend of melting glaciers linked to a warming climate and perhaps other impacts, such as the deposit of soot, reducing the reflection of heat back into space", says UN Under-Secretary-General and UNEP Executive Director Achim Steiner. "This report underlines a global trend, observed over many decades now in some parts of the globe, which has short and long-term implications for considerable numbers of people in terms of water supplies and vulnerability".

"Without doubt the main driving force behind the rapid melting of Himalayan glaciers and formation of the catastrophic Glacial Lake Outburst Floods (GLOFs) is warming due to climate change. The risk to lives and livelihoods in the fragile Hindu Kush Himalayan region is high and getting higher. Immediate action by the global community on launching long-term adaptation and resilience-building programmes is urgently needed," said Madhav Karki, Deputy Director General, International Centre for Integrated Mountain Development (ICIMOD).

"These alarming findings on melting glaciers underline the importance of combating climate change globally. It sends a strong message to us as politicians and climate negotiators in Cancun," said Norway's Minister of the Environment and International Development Erik Solheim.

Mr. Solheim announced today that Norway will fully fund, with more than US$12 million, the five- year Hindu-Kush-Himalayas Climate Impact Aadaptation and Assessment (HICIA) Programme from 2011.

The initiative will be carried out by the Centre for International Climate and Environmental Research, ICIMOD and UNEP-Grid Arendal.

"People in the Himalayas must prepare for a tough and unpredictable future. They need our committed support. Therefore, Norway will fully fund the brand new five-year programme. We see this programme as a potent mix of solid climate science, promising intra-regional cooperation and concrete adaptation projects on the ground. We support the programme with great enthusiasm and look forward to continued close cooperation with the programme partners," said Mr. Solheim.

"ICIMOD is indeed very pleased to acknowledge the generous announcement by the Royal Norwegian Government in taking a major and timely action by announcing a fresh and substantial support in launching the HICIA programme," said Dr. Karki.

Key Findings from the New UNEP Report
Melting glaciers could, in some places and perhaps in a matter of a few decades, cause a reduction in water availability in dry areas, such as in Central Asia and parts of the Andes, says the report "High Mountain Glaciers and Climate Change - Challenges to Human Livelihoods and Adaptation."

In dry regions of Central Asia, Chile, Argentina and Peru, where there is little rainfall and precipitation, receding glaciers will have much more impact on the seasonal water availability than in Europe or in parts of Asia, where monsoon rains play a much more prominent role in the water cycle.

The report says that many glaciers may take centuries to fully disappear but underlines that many low-lying, smaller glaciers, which are often crucial water sources in drylands are melting much faster.

"When glaciers disappear, people, livestock, birds and animals will be forced to move," says Christian Nellemann of the UNEP/GRID-Arendal research centre in Norway. "But ironically, a lot of people die in deserts also from drowning, when increasingly unpredictable rains cause flash floods."

Most glaciers have been shrinking since the end of the Little Ice Age around 150 years ago. However, since the beginning of the 1980s the rate of ice loss has increased substantially in many regions, concurrent with an increase in global mean air temperatures.

In some regions, it is very likely that glaciers will largely disappear by the end of this century, whereas in others glacier cover will persist but in a reduced form for many centuries to come.

As glaciers melt, lakes held back by walls of mud, soil and stones can form, holding back sometimes millions of tonnes of water which can put at risk villagers and infrastructure, such as power plants.

In the last 40 years, Glacial Lake Outburst Floods - also known as GLOFs - have been increasing, not only in China, Nepal and Bhutan, but also more recently in Patagonia and the Andes.

Five major GLOFs took place in April, October and December 2008 and again in March and September 2009 in the Northern Patagonia Icefield in Chile. On each occasion, the Cachet 2 Lake, dammed by the Colonia Glacier, released around 200 million tonnes of water into the Colonia River. The lake has since rapidly refilled, suggesting high risk of further GLOFs.

There has been a near doubling in the frequency of GLOFs in the Yarkant region of Karakoram, China, from 0.4 times annually between1959 and 1986 to 0.7 times annually from 1997-2006. This has been attributed to a warming climate.

In Bhutan on 7 October 1994, the glacial lake Luggye Tsho in the Lunana region, burst. The ensuing GLOF, which contained an estimated 18 million cubic meters of water, debris and trees, swept downstream killing over 20 people, and travelled over 204 kilometers.

Adaptation

Boosting adaptation, including reducing the risk to people, livestock and infrastructure will be increasingly important in a climate-constrained world.

In respect to melting glaciers and the formation of glacial lakes, siphoning off the water from such lakes is one adaptive action. This has been successfully carried out at lakes in the Cordillera Blanca, Peru.

Similar projects have been carried out in the Tsho and Thorthormi Glaciers in Nepal and Bhutan but the cost and technical challenges in remote locations can be high.

The Peruvian authorities have had substantial experience in the remediation of glacial lakes, having undertaken the first works in response to the catastrophic inundation of Huaraz in 1941, which resulted in over 5,000 fatalities.

Over 5,000 people are killed in Asia every year by flash floods and hundreds of thousands of people have been impacted in the mountain regions.

The challenge of GLOFs comes against the background of increasing concern over the impacts of extreme weather events such as flash floods on lives and livelihoods. Annually an estimated 100 to 250 million people every year are affected by flooding.

The report also calls for more investment in glacial research and monitoring. Studying and modeling the runoff from glaciers and rivers and analyzing future variability linked with climate change is complex but necessary.

"If the world is to decisively deal with climate change, we must also address the need for programmes targeted towards adaptation strategies to build long-term resilience. Local people are already having to make tough decisions and choices as the climate around them changes. It is time for and governments and the international to step up action on cutting emissions and supporting adaptation. This meeting in Cancun is the next opportunity to fast track a response," Mr. Steiner added.

Notes to Editors
The report "High Mountain Glaciers and Climate Change - Challenges to Human Livelihoods and Adaptation" can be accessed at www.unep.org or at www.grida.no/publications/high-mountain-glaciers including high and low resolution graphics for free use in publications.


The report is supported by UNEP's Polar Research Centre GRID-Arendal and experts from research centres in Asia, Europe, Latin America and North America.


The report will be released at 09:30 on 7 December 2010 at the 16th Conference of the Parties to the United Nations Framework Convention on Climate Change (COP) in Cancún, Mexico.
Around the World in 80 'Eco' Days

Cancún (Mexico), 7 December 2010 - After covering more than 25,000 kilometres across four continents, participants in the Zero Emissions Race received a warm welcome in Cancún, Mexico at the UN Climate Change Conference, having powered their way from Geneva in less than 80 days using renewable energy.


UN Environment Programme Executive Director Achim Steiner greeted environmentalist and adventurer Louis Palmer, the organizer of the marathon journey, saying this proved that green technologies to promote and catalyse low carbon transport, are available and reliable.


After their pit stop in Cancun, the teams from Australia, Germany and Switzerland will take to the road once more, with the electric vehicles aiming to arrive at the finishing line in Geneva by 22 January 2011.

"We have been following the Zero Emissions Race with interest and excitement since its inception. I am delighted to see that the same innovation and spirit which inspired the dreams of adventurers over 130 years ago, are still very much evidence as we cross another threshold, this time towards a resource-efficient Green Economy frontier,"said Mr Steiner.

The transport sector is responsible for approximately one quarter of all energy-related CO2 emissions, a figure set to rise to one third by 2050. Within that sector, it is estimated that in 40 years, the number of vehicles in the world will have tripled, with over 80 per cent of that growth occurring in developing countries.

Mr. Steiner added: "There is an urgent need to find a way to reconcile legitimate aspirations for mobility and an ambitious reduction in CO2 from cars. The technology underpinning electric cars, amongst others, needs to be harnessed, and markets and industries incentivized to support production and use of this kind of clean energy."

"With an unprecedented growth in the use of vehicles over the next few decades, governments in both developed and developing countries need to act to stem the expected exponential rise in emissions and find alternative transport methods," he said.

Reducing CO2 emissions from transport not only helps to combat climate change, but reduces the health hazards associated with vehicle emissions. The majority of developing and transitional countries used leaded gasoline in 2002. However, today only 6 countries are still using small amounts of leaded gasoline - the harmful effects of which are well documented in both children and adults.

UNEP's Clean Vehicles Partnership, with its Clearing-House based in Nairobi has on-going or planned activities in all the remaining six countries moving towards complete elimination - Myanmar, North Korea, Yemen, Algeria, Afghanistan and Iraq.

UNEP is also working with road safety, environmental protection and sustainable mobility campaigners, the FIA Foundation, the International Energy Agency and the International Transport Forum, to form the Global Fuel Economy Initiative - the first global project to offer developing countries access to practical technology and policy expertise to lower greenhouse gas emissions from road transport.

This case study is showcased in UNEP's "30 Ways in 30 Days" initiative - a compilation of success stories showing that across the world, in myriad ways, from community-based programmes to entrepreneurial endeavors, solutions are available to help confront the challenges of climate change and to help countries, communities and businesses move towards low-emission, climate-resilient growth.

Note to Editors
UNEP's 30 Ways in 30 Days Initiative is at http://www.unep.org/unite/30ways/

 
 

Source: United Nations Environment Programme
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