Nepal Glaciers Shrink By Quarter In 30 Years

Climate crisis has caused Nepal 's Himalayan glaciers to shrink by nearly a quarter in just over 30 years, said a scientist.

The glacier loss raises the risk of natural disasters in the ecologically fragile region.

A new study by the Kathmandu-based International Centre for Integrated Mountain Development (ICIMOD) shows that the area covered by glaciers has decreased by 24 per cent between 1977 and 2010.

Samjwal Ratna Bajracharya, lead author of the report, said “the shrinking of glaciers in Nepal is definitely connected to climate change; glacial melt is a huge indicator of rising temperatures.”

Under the three-year study led by ICIMOD scientists mapped satellite imagery from several decades to find the extent of ice loss in the region.

The fastest decline occurred between 1980 and 1990, said Bajracharya. Prior to the late 1970s, satellite imagery reflected little change in Nepal 's glacial area.

He said the glacial melting is creating huge, expanding lakes that threaten to burst and devastate mountain communities living downstream.

The accelerated glacial loss raises concerns over future access to water resources, particularly in regions where groundwater is limited and monsoon rains are erratic.

“If the trend continues, the immediate impact will be felt by those living in high-altitude regions, which are dependent on freshwater reserves from glaciers,” said Bajracharya.

The findings also sound alarm bells for Nepal 's push to develop hydropower projects.

“ Nepal cannot use its water resources to develop the country without assessing the state of our glaciers and river basins,” he said.

A government report in India recently blamed hydropower projects for devastating floods last year that killed thousands in India and Nepal .

The government panel said the build up of sediment in rivers, due to the dumping of soil that was dug up during construction of hydropower projects, exacerbated flooding when record-high rainfall hit the region last June.

It should be mentioned that the Himalayan region abounds in glaciers. Most of the big glaciers lie in the eastern Himalayas .

As the western Himalayas receive only a small amount of rainfall, barring the formation of vast snowfields, the source of some of the big rivers of Nepal are in fact glaciers.

Nepal 's largest glacier lies in the Mahalangur and the Kumbhakarna ranges. Khumbu is the biggest glacier and Langtang the longest. Kanchenjunga , Yalung, Nupchu and Langtang are some other glaciers belonging to the eastern Himalayas . Tukche and Hidden valley glaciers belong to the central Himalayas but these are comparatively small.

The Khumbu glacier is situated between Mount Everest and the Lhotse-Nuptse Ridge. It is seen flowing down between the two mountains and swerving right through the Khumbu valley. The terrain is gray and rocky. More

 

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Water Wars in Asia?

The battles of yesterday were fought over land. Those of today are over energy. And the battles of tomorrow may be over water.

Nowhere is the danger greater than in Asia. Drought, urbanization, pollution, and inadequate infrastructure have made Asia the world’s most water-scarce continent on a per-capita basis. Many of its water sources cross national boundaries, creating the potential for international conflict as supplies dwindle. Now global warming is raising the stakes further, causing rising sea levels, more severe floods and droughts, and the melting of the glaciers in the Tibetan plateau.

The water security challenges facing China and India in particular have consequences not just for the two rising powers, but for Asia as a whole. They threaten to reduce economic growth across the region, exacerbate ongoing territorial disputes, and impose further hardships on Asia’s poor. Asia Society Northern California is pleased to host national security expertBrahma Chellaney, water expert Peter Gleick, and futurist Peter Schwartz to discuss what is becoming Asia’s defining crisis of the 21st century.

Brahma Chellaney is Professor of Strategic Studies at the Center for Policy Research in New Dehli. He has written six books on international relations and geopolitics, including Water: Asia’s New Battleground, which won the Asia Society’s Bernard Schwartz Book Award in 2012. His newest book, Water, Peace, and War: Confronting the Global Crisis, has just been released.

Peter Gleick is Co-founder and President of the Pacific Institute. Dr. Gleick is the author of many scientific papers and nine books on water, including The World’s Water and Bottled and Sold: The Story Behind Our Obsession with Bottled Water. He is the recipient of the MacArthur “genius” Fellowship, among other awards.

Peter Schwartz (moderator), a renowned futurist, is Senior Vice President for Global Government Relations and Strategic Planning at Salesforce.com. He was Co-founder and Chairman of Global Business Network (GBN).

Copies of Water: Asia's New Battleground and Water, Peace, and War: Confronting the Global Water Crisis will be available for purchase and signing!

Promotional co-sponsors: The Asia Foundation, East Meets West, Institute of East Asian Studies, UC Berkeley, Japan Policy Research Institute, Pacific Institute, Sierra Club, US China Green Energy Council, World Affairs Council

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Program Agenda:

5:30-6:00 pm: Registration
6:00-7:30 pm: Discussion and Audience Q&A
7:30-8:00 pm: Reception and Book Signing

EVENT DETAILS

5 June 2013

6:00pm - 7:30pm

Asia Society
Bechtel Conference Room
500 Washington St.
San Francisco

Click for Directions

$10 Asia Society/Co-sponsor members/students; $15 non-members

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Water scarcity to drive conflict, hit food and energy –experts

OXFORD, United Kingdom (AlertNet) – Water is increasingly becoming a scarce resource and shortages could drive conflict, hit food and energy production and threaten growth in renewable energy technology, experts warned at a water security conference on Monday.

And climate change – which appears to be bringing more extreme weather events such as droughts and floods – is likely to make the situation even more difficult, they said.

“Climate change will hit more people through water than in any other way,” said David Grey, a University of Oxford water expert, pointing to record floods in Thailand, Pakistan and Australia and record droughts in Somalia, Russia and the U.S. state of Texas in just the past two years.

But cutting waste in water use, particularly in irrigation, as well as making good use of mobile phone technology, gathering better data and putting in place better water use policies all could help stem conflict, improve safety and ensure better water security, particularly for the world’s poorest people, the experts said.

“The scale of the challenge, and therefore the scale of the opportunity it presents, is unprecedented,” said Ian Walmsley, pro-vice chancellor for research at the University of Oxford.

Worldwide, farming accounts for 70 percent of the world’s freshwater use each year. But in agricultural breadbaskets like central India, the northern China plains, and the central western region of the United States, much of the water is drawn not just from rain but from deep aquifers that are quickly being depleted.

Peter Gleick, a leading water expert and head of the U.S.-based Pacific Institute for Studies in Development, Environment and Security, likened the issue to drawing down a bank account. The situation could present huge problems in the future as the world tries to increase food production by at least 70 percent by 2050 to meet growing demand, experts said.

“A substantial amount of our food production worldwide comes from non-renewable groundwater resources, and in the long run that is not sustainable,” Gleick said.

Renewable energy production also is threatened by water shortages, he said. Huge solar energy arrays are planned in the western United States, but many of the best places to locate them also suffer severe shortages of the water needed to cool them.

Conflicts over access to water are as old as recorded history, Gleick said – his institute has created a map of 225 water conflicts dating back 5,000 years – but today “the risks of water-related conflicts are growing,” as shortages loom in many parts of the world. More

 

 

Water and Food Facts for World Water Day

March 22 is World Water Day, and its theme this year—water and food security—couldn’t be more pressing. But what do we really know about water—where it goes, what it’s used for, and how to preserve it? Here are a few water facts to get people thinking about what the “food and water crisis” really means, and how we can begin to change things.

Consumption

India, China and the United States together account for about one-third of the water extracted each year globally.

Over 90 percent of the water consumed globally by humans is used for agriculture.

Irrigation and Groundwater

Only 16 percent of world’s cropland is irrigated. But because irrigated land is more than twice as productive, that land accounts for 36 percent of the food we harvest.

To meet the constant demand for irrigation, countries are increasingly using more and more non-renewable groundwater. According to the United Nations, groundwater extraction has tripled in the last half century. India and China’s use of groundwater grew the most – today these countries use ten times as much groundwater as they did in 1950.

The amount of groundwater the world uses is so huge, it’s contributing to rising sea levels – as much as 25 percent of the observed amount in recent years. That means that an enormous amounts of water drawn from underground aquifers is never replaced. Or as Duke University’s Bill Chameides puts it, “Mankind is moving buckets and buckets of water from land to the ocean.”

The amount of groundwater the world uses is so huge that it’s also changing local climates, and it may bemasking the effects of global warming, according to research published in Climate Dynamics. This masking effect is most striking over North America, India, the Middle East and East Asia.

Pumping groundwater consumes enormous amounts of energy. In India, approximately one-fifth of the nation’s total electricity consumption goes toward pumping groundwater for irrigation. In the most important food producing areas, that number is much higher.

Virtual Water

Almost everything we do—from growing food, to making clothes and computers and automobiles, to generating electricity requires water. “Virtual water” refers to the amount of water it takes to produce and transport a commodity. Check your own water footprint here.

Many water-stressed nations are today virtual water exporters. India is the largest net exporter of virtual water.

Climate Change and the Future

According to the OECD, by 2030 almost half of the world’s population will be living under severe water stress.

Globally, heat waves and extreme drought could increase under climate change. The impact will be worse in some areas. According to research by Lamont-Doherty scientists at the Earth Institute, by mid-century dustbowl conditions seen in the 1930s will become the new norm for the southwestern United States.

Water stress threatens the grid. Conventional powerplants – hydroelectric, coal-fired, gas fired and nuclear—require tremendous volumes of water to run, accounting for 50 percent of water withdrawals in the United States. According to a study for the Columbia Journal of Environmental Law, the convergence of population growth, rising demand and drought could cause huge water shortages and force powerplant shutdowns.

What You Can Do

Think about diet. The amount of water it takes to produce different kinds of food various tremendously. The water footprint of beef is particularly egregious, consuming anywhere from 2500 to 5000 gallons of water per pound. Consider cutting back, or switching to grass-fed beef, which has a significantly lower water footprint. More