Thursday, February 7, 2008

Google to help green technologies amass scale

From: Reuters

/business/article/30759

By Nichola Groom

INDIAN WELLS, California (Reuters) - Google Inc is prepared to invest hundreds of millions of dollars in big commercial alternative-energy projects that traditionally have had trouble getting financing, the executive in charge of its green-energy push said on Wednesday.

The Internet search giant, which has said it will invest in researching green technologies and renewable-energy companies, is eager to help promising technologies amass scale to help drive the cost of alternative energy below the cost of coal.

"There are a lot of technologies that get to the pilot scale and look promising, but the first few large commercial projects deploying those technologies, financing those can be extremely difficult," Dan Reicher said in an interview at the Clean-tech Investor Summit in Indian Wells, California.

"Often the usual equity and debt players will say come back to us when you've demonstrated this at scale," said Reicher, director of climate and energy initiatives for Google's philanthropic arm, Google.org.

The stage between successfully developing a new technology and amassing scale is often referred in the industry as the "Valley of Death," Reicher said.

Venture capital firms typically pour tens of millions into developing new technologies, Reicher said. But that's not nearly enough to build a utility-scale solar thermal plant, for instance, and that's where Google thinks it can be helpful, he added.

"When you get to building a commercial-scale project in the energy world, you can be looking easily at hundreds of millions or even across the billion dollar threshold," Reicher said. "Over years we'll be looking at hundreds of millions of dollars. So we're very mindful of the Valley of Death."

In addition to considering project finance, Google has already committed $20 million to funding start-up firms researching solar-thermal and high-altitude wind power.

It is also looking closely at several companies with enhanced geothermal systems, Reicher said. Enhanced geothermal systems, or EGS, create power by pumping water into hot rocks in the ground rather than harvesting hot water already there.

"We arrived at these three technologies because we think they have real promise to move down the cost curve and to be competitive with coal and to get to very large scale," Reicher said.

Google said in November it planned to spend hundreds of millions of dollars to help drive the cost of electricity made from renewable sources below the price of power generated from dirty coal-fired plants.

The company has pledged $10 million to Pasadena, California-based eSolar Inc to support research and development on solar thermal power, which concentrates heat from the sun to create steam and spin turbines. It has invested $10 million in Alameda, California-based Makani Power Inc, which is developing high-altitude wind technologies.

(Editing by Gary Hill)

Wednesday, February 6, 2008

China snows show world faces new disasters

From: Reuters

/climate/article/30716

By Robert Evans

GENEVA (Reuters) - China's devastating snowstorms and cold of the past months show that the world must prepare for new types of disasters caused by what was once called freak weather, United Nations experts said on Wednesday.

The experts said the Chinese events, which Beijing says affected some 100 million people and are likely to cost at least $7.5 billion, underlined the need for greater global cooperation on global weather forecasting.

"So-called freak weather is becoming more common, and reducing vulnerability to unexpected extremes must be a top priority for governments," said Salvador Briceno, head of the U.N's disaster relief agency ISDR.

Separately, World Meteorological Organisation (WMO) chief Michel Jarraud, said the freeze that swept China from the north to its normally near-tropical southern provinces underlined the need for better seasonal climate predictions.

"The world needs to strengthen existing mechanisms that predict climate events and then ensure that this information is made available to all, especially to the benefit of people in developing countries," Jarraud said.

China's Meteorological Administration says the January extremes probably developed out of a La Nina -- or low sea- surface temperatures -- in parts of the Pacific in the second half of last year combined with unusual weather from the west.

MORE OF THE SAME

It is also warning that the country, now recovering as skies clear and power is restored from the freeze which killed scores of people, must be ready for more of the same as a result of global climate change.

Briceno said in a statement from ISDR headquarters in Geneva that China's sufferings underscored the need for all governments to build infrastructure that can withstand previously unthinkable weather.

"When billions of dollars in potential losses are balanced against the low costs of prevention in the future, the choices should be clear," he said. Most countries could expect to face similar situations in the coming years, he added.

Jarraud, speaking at a news briefing, said it was essential to ensure better seasonal -- as well as short- and long-term -- climate predictions if lives were to be saved and economies protected as weather patterns change.

Speaking after a three-day meeting of specialists on weather and disaster relief from a wide range of disciplines and international and national agencies, he said it was also vital to ensure better transmission of forecasts around the globe.

The meeting was called to prepare for a U.N. World Climate Conference in Geneva in the second half of next year which will focus on the science underpinning seasonal predictions -- an area in which Jarraud said there had been too little investment.

The conference -- following two predecessors in 1979 and 1990 which set up key bodies on climate change -- will decide what science is needed over the next decade to provide reliable forecasting and urge governments to support it, he said.

(Editing by Jonathan Lynn)

UK to spur research into climate impact on poor

From: Reuters
From ENN.com

/ecosystems/article/30722

LONDON (Reuters) - Britain will increase research into the possible impacts of climate change on the world's most vulnerable people, including deeper poverty and conflict, the international development minister said.

Secretary of State Douglas Alexander said his department will spend 20 million pounds ($39.25 million) a year over the next five years, a tenfold increase, to pinpoint where global warming will hit hardest and show how to proof development against more extreme weather and rising seas.

"Climate change is a defining global social justice issue," Alexander said on Wednesday.

Droughts and heatwaves from Kenya to Australia and southern Europe have been blamed on global warming which is happening already. Six of the first seven years this century were among the seven hottest since reliable records began in 1850, says the World Meteorological Organisation (WMO).

Poor countries will be hit hardest because they have the least resources to cope when crops fail or storms wreak havoc.

Rich countries' efforts to help developing nations are not entirely altruistic, as concern rises that climate change may trigger more conflict, for example over water, and migration.

"By the middle of this century there could be as many as 200 million people forced from their homes because of rising sea levels, heavier floods and more intense droughts. Where will they go?" said Alexander.

"If today's image of climate change is the polar bear tomorrow's could be the AK47."

The extra funding announced on Wednesday was separate from 800 million pounds that Britain last year pledged to support developing countries' fight against climate change, through a World Bank fund expected to be detailed at the Group of Eight leaders' summit in Japan in July.

Japan presented a $10 billion package last month to help emerging countries tackle climate change.

The United States said in January it would commit $2 billion over the next three years to promote clean energy technologies and help developing nations fight climate change.

(Reporting by Gerard Wynn, Editing by Matthew Jones)

A new year in the dark and cold

The lunar new year is China's biggest holiday. But one city has spent it shivering in the gloom after a 12-day power cut, writes Tania Branigan


Wednesday February 6, 2008
Guardian Unlimited


China power cuts
Electrical towers damaged by snow in the city of Chenzhou. Photograph: Vincent Yu/AP


The electricity will return tomorrow, or next Monday, or maybe in three weeks time. The state news agency just reported that it is back already, 12 days after vicious storms crippled the power lines and hours before the clocks struck midnight: a new year miracle.

But one resident says the centre is mostly dark, another that perhaps a third of the city has had power restored - for a few hours.

After living on rumours for almost two weeks, what Chenzhou's citizens know for certain is that fuel is low and they can see their breath indoors; that water is shut off and food prices are climbing; that shop after shop is locked and shuttered and that unlit apartment blocks loom from nowhere as they trudge through the darkened city.

"If you report on this situation, please make sure you have the true facts," said a stern-faced man at the railway station as I left the city this morning.

"Premier Wen Jiabao came and said it would be solved, so officials here said that 80% of power was back up. That's obviously not true. Look around you. The only lights are from people's generators. At home we hardly have enough water even for cooking."

Chenzhou, in Hunan province, is almost five times the size of Birmingham, with 4.6m residents. It is one of the cities worst hit by China's harsh winter and one of the government's greatest anxieties. Even in the hardest times, Beijing has strived to ensure a good new year for workers. Wen's recent visit is emblematic of the government's determination to reassure people that it is on their side. Top officials have toured affected areas and almost half a million troops have been drafted in.

Tanks have delivered food and candles to remote villages, while prices have been frozen in the larger stores. Such operations are proof of the astonishing ability of the government to mobilise its resources - and of its concern that people know it is doing so. "Only when the masses are reassured, can the country be in peace," the premier said yesterday. "Only when the country is in peace, can the leaders be relieved."

Chenzhou residents don't blame the authorities for the power outage itself. They can see what happened: along the roads, branches have been wrenched from trees by the same mass of snow and ice which downed lines and toppled pylons.

But houses are bitter with cold as temperatures fall to -8C overnight. The prices of candles and coal bricks has tripled or quadrupled. Gas canisters, when they can be found, fetch 130 yuan (£9.20) instead of their usual 80. People are beginning to wonder why repairs are taking so long, and when they will be finished.

"When we need water we have to go to a well a kilometre away and carry it home," said Mrs Wang, as she tended her street kiosk by the light of a single flame last night.

"There are rumours that it could be 10 or 20 days before the power comes back because so many towers were knocked down in the storms. But the radio said the government had promised to provide electricity before the first day of spring festival [new year]."

"That's a lie - it's impossible," interrupted a customer. "They only say that to make people feel comfortable."

Even officials like Mr Peng, who had worked day and night to clear a 45 mile jam on the expressway into the city, were sceptical.

"Spring festival is the most important day of the year. We can eat at home or eat out and after dinner we sit around together watching the big TV show. If we don't have electricity, it will be meaningless," he grumbled.

"Maybe we'll just have to sit in the dark and think. It seems like life has gone back to primitive times."

Only the hoteliers with generators are happy, their rooms booked solid by wealthier residents who check in for baths and showers or the chance to charge their mobiles. Even these establishments lack heating and cut power overnight to save fuel and rest the generators. Businessmen blunder and curse their way along black corridors, but know that they are privileged compared to the poor, the elderly and those in outlying rural areas.

"To young people it's bearable, but for the older people it's really horrible. They are too old to leave and too old to fetch coal and water," said Chen Xi, a kindergarten teacher escaping the city for the New Year.

"I saw Wen Jiabao when he came and felt touched - he's a 60-year-old man and he still cares about the problems of common citizens. I feel grateful for what the government and nation have done for us.

"But I also think the [local] government was not really well prepared. When I talk to friends in Northern China they say their governments are close to Beijing and if anything is wrong the citizens or officials can report it. Chenzhou is too far away. The Beijing authorities can't really manage our business."

48 killed as tornadoes wreak havoc in US

Michael McDonugh and agencies

Guardian Unlimited


US tornados
Cyerice Martin, right, comforts her sister, Seavia Dixon in Atkins, Arkansas. Photograph: Mike Wintroath/AP


Violent storms and tornadoes ripped through five southern US states late yesterday and early today, killing at least 48 people and injuring more than 100 others.

The powerful winds destroyed homes, flattened warehouses and collapsed the roof of a shopping mall.

The victims included 24 people in Tennessee, 13 in Arkansas, seven in Kentucky and four in Alabama.

The severe storms moved eastwards this morning and tornado warnings were posted for Georgia and northern Florida, the New York Times said.

In Arkansas, two parents and their 11-year-old daughter died after their home "took a direct hit" from the storm, the Pope County coroner, Leonard Krout, said.

"Neighbours and friends who were there said: 'There used to be a home there,'" Krout said. Rescuers were carrying out door-to-door searches in an attempt to find more victims.

In Sumner County, Tennessee, a mother was found dead a few metres from where her house once stood. Her baby was found alive a few hundred metres away and taken to a local hospital, CNN reported.

The tornadoes, which also hit Mississippi, were part of a line of storms that raged across the middle of the country at the end of the Super Tuesday primaries, including Tennessee and Arkansas.

As the extent of the damage became clear, candidates including Hillary Clinton, Barack Obama and Mike Huckabee paid tributes to the victims in speeches.

In Jackson, Tennessee, a tornado trapped college students in collapsed buildings.

"It looks like a war zone. Cars and trucks thrown from one side of the campus to the other," Union University president David Dockery told CNN television, which broadcast footage of the college.

Nine students remained in hospital overnight. None had life-threatening injuries, CNN reported.

Elsewhere in the state, a large fire erupted at a natural gas station north-east of Nashville. Authorities said the station might have been damaged by the storms.

In Memphis, high winds brought down the roof of a Sears store. Debris, including bricks and air conditioning units, was scattered on the car park, and around two dozen vehicles were damaged.

In Mississippi, the Desoto County sheriff's department commander, Steve Atkinson, said a tornado had wrecked warehouses in an industrial park in Southaven, just south of Memphis.

"It ripped the warehouses apart. The best way to describe it is it looks like a bomb went off," he added.

Sunday, February 3, 2008

Migrating Birds Sophisticated Internal Compass Still a Mystery

From: ENN

/wildlife/article/30545

Birds like the Reed warbler (shown below) are able to adjust back to their original course after been captured and taken 1000 km away. Scientists are still not sure what gives bids this amazing ability

The new evidence suggests that the birds have true navigation, meaning that they can identify at least two coordinates that roughly correspond to geographic latitude and longitude.

The findings challenge the notion held by some that birds might be limited to navigation in the north-south direction. But scientists still don't know how they do it.

"We have experimentally shown beyond reasonable doubt that long-distance, intercontinental avian migrants can correct for east-west displacements during their return migration in spring," said Nikita Chernetsov of the Biological Station Rybachy at the Zoological Institute in Russia. "This means that they can determine geographic longitude, even though we do not currently know how they do it."

Latitude, which defines the location north or south, may be relatively easily defined from the position of the sun at midday or through the use of geomagnetic information, Chernetsov explained. Experimental studies by others have strongly suggested that geomagnetic cues are indeed used by avian migrants for this purpose, he said, although other cues might also be important.

Longitude is trickier. Migrants could perhaps deduce their longitudinal location from the rotational phase of the starry sky, but experimental data do not support that idea, he said. Migrating birds might use a dual time-sense, relying on two internal clocks, one set to their "home time" and the other to their wintering grounds. They might also rely on geomagnetic information, but in some parts of the world that doesn't vary with longitude, Chernetsov said.

Many previous experiments performed with young birds on their first autumn migration have suggested that the young birds rely on a very simple navigation strategy, yet few experiments had been performed on more experienced birds during the return migration in spring.

"Consequently," the researchers wrote, "our knowledge about the spatiotemporal navigation strategies of experienced migrants in spring is very sparse and rather speculative. Do birds on return migration in spring perform true navigation towards a specific goal area?"

The answer, for the reed warblers at least, is yes. After the researchers dropped the migrants off many kilometers to the east, the birds corrected for their displacement by shifting their orientation from the northeast at the capture site to the northwest, the researchers reported. That new direction would lead the birds to their expected breeding areas.

"Our results suggest that Eurasian reed warblers are able to determine longitude and perform bicoordinate navigation," the researchers concluded. "This finding is surprising and presents a new intellectual challenge to bird migration researchers, namely which cues enable birds to determine their east-west position?"

This research is reported online on January 31st in Current Biology, a publication of Cell Press.

The researchers include Nikita Chernetsov, Biological Station Rybachy, Zoological Institute of the Russian Academy of Sciences, Kaliningrad Region, Russia; Dmitry Kishkinev, Biological Station Rybachy, Zoological Institute of the Russian Academy of Sciences, Kaliningrad Region, Russia, Animal Navigation Group, Oldenburg University, Oldenburg, Germany; and Henrik Mouritsen, Animal Navigation Group, Oldenburg University, Oldenburg, Germany.

Adapted from materials provided by Cell Press

Bad week for fish

From: Brian Halweil, Worldwatch Institute, More from this Affiliate

/wildlife/article/30522

Last week brought a perfect storm of bad PR for the world’s seafood. Or, it might have actually been good PR from the beleaguered fish’s perspective. Interestingly, the three stories of depletion fish stocks, illegal fishing, and seafood contamination are closely related.

First, Elizabeth Rosenthal at the New York Times reported that the strengthening Euro and a traditional taste for seafood has made Europe the world’s largest market for fish, importing about $22 billion worth a year. But this roaring import market isn’t just evidence of Europe’s traditional taste for fish. It’s also buoyed by Europe’s depletion of its own fish stocks, since much of this fish comes from waters hundreds or thousands of miles away. Europe now imports 60 percent of its fish.

Second, in a monumental transfer of nutrition and wealth, much of this growing import tab includes fish stolen from the waters of West Africa, the Caribbean, and other poorer regions, where local populations used to depend on the catch for dinner. According to the World Wide Fund for Nature, up to half the fish sold in Europe is illegally caught or imported.

Third, the New York Times Dining Section reported that tuna served in Manhattan sushi houses often contains dangerous levels of mercury, a pattern ostensibly present with tuna served anywhere in the nation or the world. A follow-up editorial in the Times made the profound point that “the food you eat is only as safe as the environment it comes from.” For decades, industry, coastal cities, and unsuspecting citizens have taken advantage of the diluting power of the oceans for dumping grounds. In particular, coal-burning power plants release massive amounts of mercury into the air, which eventually enters the ocean food chain only to come right back at us in our seafood, particularly in large, long-lived species like tuna, swordfish, and cod.

The connection between the first two stories is straightforward. As Europeans—not to mention Americans and Japanese and Chinese—crave more seafood, the price goes up, as does the incentive to get fish by any means necessary. A reef fish caught off the coast of Senegal commands a much higher price in Europe than it does in a coastal fishing village.

It may not be immediately clear what tuna with dangerous levels of mercury has to do with depleted, illegal fish being sold in Europe. But the same large fish that command the highest prices in seafood shops, sushi bars, and restaurants from London to Berlin also tend to be the most endangered fish in the sea. Their size—and their fatty flavor and texture—makes them highly desirable, but also makes them high in contaminants. (See my previous post on choosing safer seafood.)

And because these problems are integrated, the solutions naturally are as well. Avoiding these big, luxury fish will mean fewer international fleets scouring the waters, and less competition for the fish that poor fishing villages depend on. But it will also mean less risk of consuming unsafe levels of mercury. As with so many environmental issues, self-interest ends up also being in the best interest of the planet.

Is Climate Change Making Us Sick?

From: , Organic Consumers Association, More from this Affiliate
from enn.com
/pollution/article/30544

You might think that a little climate change would not go amiss in the British Isles. We'd have more warm summers and fewer freezing winters. What's wrong with that?

Ask the people of Yorkshire. As a result of global warming, many homeowners this week are up to their waists inmuddy water. Andflooding could be just the beginning of our worries. This week a paper in the British Medical Journal gave warning that climate change could be particularly damaging to the health of people in the developing world, but research also suggests that it could be bad news for Britain. Delegates at a conference in London on Tuesday will be told that global warming will drive up rates of cardio-respiratory disease, diarrhoea and insect-borne diseases such as malaria in the UK.

Global warming is believed to be occurring because human activities, particularly burning fossil fuels, have released into the atmosphere huge amounts of carbon dioxide and other "greenhouse gases" that are trapping more heat in the Earth's lower atmosphere. Average global surface temperatures are already rising and are predicted to increase by between 1.4C and 5.8C over the next century, bringing a higher risk of floods, droughts and heat waves.

"We are already witnessing the effects of climate change on health," says Dr Hugh Montgomery, the director of the Institute for Human Health and Performance at University College London, who has organised next week's conference at the Royal College of Physicians. The heat wave of 2003, when temperatures in the northern hemisphere reached the highest on record, killed up to 35,000 people - 2,000 of them in the UK. Last summer's floods have been shown to increase rates of mental illness (see box, left). And milder weather is likely to be behind the arrival here from Europe of the midge-borne cattle disease bluetongue.

"Each of us is, in effect, moving 6km (4 miles) south a year or 60km a decade," says Dr Montgomery. "The result will be fewer deaths from colds and flu, but more from strokes and heart attacks because of the heat. Global warming means a higher baseline temperature from which there will be more surges and extreme events."

Full Story: http://women.timesonline.co.uk/tol/life_and_style/women/
body_and_soul/article3251354.ece

Thursday, January 31, 2008

UK greenhouse gas emissions fall in 2006

From: Reuters
From ENN.com
/pollution/article/30356

By Gerard Wynn

LONDON (Reuters) - Britain reversed previous estimates to say its emissions of climate-warming greenhouse gases fell in 2006, showing on Thursday that it was already nearing a self-imposed goal for 2025.

Britain says it is a world leader in the fight against global warming and is introducing legally binding targets to cut carbon emissions by 26-32 percent by 2025 and 60 percent by 2050 below 1990 levels.

Environmental groups have demanded that Britain toughen those 2025 and 2050 goals.

U.K. greenhouse gas emissions were more than 16 percent below 1990 levels in 2006, or 21 per cent below when calculated net of carbon trading whereby governments and companies count as their own cuts that they funded overseas.

But international aviation emissions rose while the commonest greenhouse gas carbon dioxide (CO2) was barely changed, down 0.1 percent.

"As a country we must do much more across the board," said Environment Secretary Hilary Benn, adding that the U.K. was on track to meet and go "well beyond" its Kyoto commitments.

Under the international Kyoto Protocol, Britain has to cut by 2012 its greenhouse gases to 12.5 percent below 1990 levels. Benn said Britain was taking steps to cut emissions further.

"That's why we're reforming the planning system to remove barriers to renewable energy and backing new nuclear power generation," said Benn.

Earlier this month, the government gave the green light to a new generation of low carbon-emitting nuclear power plants. The first new plants could come on line from 2017 at the earliest.

AVIATION EXCLUDED

Emissions in 2006 of all six major greenhouse gases were equivalent to 652.3 million tonnes of carbon dioxide (CO2), of which CO2 accounted for 554.5 million tonnes.

But those numbers excluded international aviation and shipping. Countries do not report these under Kyoto.

Environment ministry data showed that in 2006 international flights in and out of Britain produced 35.6 million tonnes of CO2 emissions, based on UK fuel consumption, or 6.4 percent of total CO2, while international shipping produced 1.2 percent.

British international aviation emissions rose 1.5 percent in 2006 while domestic aviation fell 2.8 percent, the environment ministry said in a statement.

Total national greenhouse gas emissions estimates fall if calculated net of emissions permits that companies buy from overseas to help them meet limits imposed by the European Union's Emissions Trading Scheme.

But in 2006 European industry overall got more emissions permits than they needed meaning that those permits were not necessarily linked to any emissions cut.

(Reporting by Gerard Wynn, Editing by Peter Blackburn)

Brazil unable to curb Amazon destruction

From: Reuters
From ENN.com
/ecosystems/article/30367

By Raymond Colitt

BRASILIA (Reuters) - Brazil's government is unwilling and unable to halt destruction in the Amazon rainforest despite emergency measures it announced last week to curb rising deforestation, environmental experts say.

High commodity prices and increased land use elsewhere in Brazil are driving ranchers and farmers deeper into the Amazon in search of cheap land, environmentalists say.

Between August and December last year, 7,000 square km (2,703 square miles), or two-thirds the annual rate, were chopped down.

In response, the government of Brazilian President Luiz Inacio Lula da Silva banned logging and cut farm credits in the 36 municipalities with the highest deforestation rate. It also said it would ban farm products from illegally deforested areas and would register property deeds to prevent land theft.

"We are convinced if we play all our cards we can reduce deforestation in 2008 as well," Environment Minister Marina Silva said.

In the two years through July 2007, the rate had fallen by 50 percent.

But environmentalists said the measures were half-hearted and insufficient and some could even increase deforestation.

"It's a positive first step, but only a drop in the ocean," said Paulo Moutinho, coordinator at the Environmental Research Institute of the Amazon.

Applying restrictive measures where deforestation already occurred would force loggers and ranchers to neighboring municipalities, said Roberto Smeraldi, head of Friends of the Earth in Brazil.

'MEASURES COULD FAN THE FIRE'

"The government is following, not anticipating, deforestation -- these measures could fan the fire," Smeraldi told Reuters.

It is the third time in four years the government pledged to sort out property titles and this time it is focusing only on 36 municipalities, Smeraldi said.

"Loggers are celebrating in towns left off the hook -- the government has a terrible enforcement track record," he said.

Only 2 percent to 3 percent of fines imposed on illegal loggers are collected, says Paulo Barreto, senior researcher with Imazon, a think tank promoting sustainable development in the Amazon.

Critics say much of the government favors economic development over conservation in the Amazon and does not back the proposed measures.

"Marina (Silva) is a lone voice," Barreto said.

While it sends more troops and cartographers to curb logging, the government is promoting deforestation through large infrastructure and mining projects, roads, as well as settlements for landless peasants, Smeraldi said.

A proposed hydroelectric plant on the Rio Madeira could attract 100,000 settlers to the region.

"The government raises a red flag with the left hand and chops trees with the right," Smeraldi said.

Lula, the military and other nationalists frequently complain about foreigners meddling in the Amazon.

"Those (foreign) NGO's (nongovernmental organizations) should go plant trees in their own countries," Lula said on Wednesday.

Ranchers and farmers will continue cutting trees to create pasture or farmland as long as it is cheaper than recovering degraded land, the experts said.

"Government and agriculture need to tackle the underlying economics of deforestation, to radically rethink their approach to the Amazon, if nothing else, out of self-interest," Moutinho said.

Scientists see looming water crisis in western U.S.

From: Reuters
From ENN.com

/ecosystems/article/30402

By Will Dunham

WASHINGTON (Reuters) - A water supply crisis is looming in the western United States thanks to human-caused climate change that already has altered the region's river flows, snow pack and air temperatures, scientists said.

Trends over the past half century foreshadow a worsening decline in water, perhaps the region's most valuable natural resource, even as population and demand expands in western states, researchers led by a scientist at the Scripps Institution of Oceanography wrote in the journal Science on Thursday.

Up to 60 percent of changes in three key factors affecting the West's water cycle -- river flow, winter air temperatures and snow pack -- are due to human-caused climate change, they determined using multiple computer models and data analysis.

"Our results are not good news for those living in the western United States," wrote the team led by Tim Barnett, a climate expert at Scripps Institution, part of the University of California at San Diego.

"It foretells of water shortages, lack of storage capability to meet seasonally changing river flow, transfers of water from agriculture to urban uses and other critical impacts."

Barnett said computer models point to a looming crisis in water supply in the coming two decades.

It has been clear for some time that the climate has been changing in the western United States, and the question was whether it was due to natural variability or driven by climate change related to human-produced greenhouse gases and aerosols, the scientists said.

LOOKS LIKE PEOPLE

While the western United States has experienced natural wet and dry cycles in the past, current water flow trends differ in length and strength from past natural variations, the scientists found. The changes match those expected from the impacts of human activity on climate.

The researchers tracked water flows in three major western river systems -- Columbia, Colorado and Sacramento/San Joaquin rivers.

Changes over the past half century have meant less snow pack and more rain in the mountains, rivers with greatly reduced flows by summer and overall drier summers in the region, they noted.

"At this point in time, there's not much we can do to change that," said Barnett, who worked with experts at the U.S. government's Lawrence Livermore National Laboratory, the University of Washington in Seattle and the National Institute for Environmental Studies in Japan.

"We're going to have to adapt our infrastructure and some of our societal needs to fit the way the world is changing," Barnett said in a telephone interview.

"Water shortages throughout the west, hydroelectric power reductions, heat waves -- the whole litany of things that go with global warming."

Another group of researchers, writing in the same journal, said leaders who set water policies worldwide must take climate change into account when planning for the future.

Until now, water policies have relied on the premise that historical water patterns could be counted on to continue. But human-induced changes to Earth's climate have begun to shift the averages and the extremes for rainfall, snowfall, evaporation and stream flows, Christopher Milly of the U.S. Geological Survey and colleagues said.

"Our best current estimates are that water availability will increase substantially in northern Eurasia, Alaska, Canada and some tropical regions, and decrease substantially in southern Europe, the Middle East, southern Africa and southwestern North America," Milly said in a statement.

(Editing by Maggie Fox)

Tuesday, January 29, 2008

Officials warn of salmon population "collapse"


(01-29) 12:14 PST San Francisco (AP) --

The number of chinook salmon returning to California's Central Valley reached a near-record low last year, pointing to an "unprecedented collapse" that could lead to severe restrictions on West Coast salmon fishing this year, according to federal fishery regulators.

The sharp drop in chinook or "king" salmon returning from the Pacific Ocean to spawn in the Sacramento River and its tributaries this past fall is part of broader decline in wild salmon runs in rivers across the West.

Regulators are still trying to understand the reasons for the shrinking number of spawners; some scientists believe it's related to changes in the ocean linked to global warming.

Only about 90,000 returning adult salmon were counted in the Central Valley in 2007, the second lowest number on record, according to an internal memo sent to members of the Pacific Fishery Management Council and obtained by The Associated Press. That's down from about 277,000 in 2006 and an all-time high of 804,000 just five years ago.

In an e-mail to council members, Donald McIsaac, the agency's executive director, said he wanted to give them "an early alert to what at this point appears to be an unprecedented collapse in the abundance of adult California Central Valley ... fall Chinook salmon stocks."

"The magnitude of the low abundance ... is such that the opening of all marine and freshwater fisheries impacting this important salmon stock will be questioned," he said.

It's only the second time in 35 years that the Central Valley has not met the agency's conservation goal of 122,000 to 180,000 returning fish, according to the council, which regulates Pacific Coast fisheries.

More worrisome is that only about 2,000 2-year-old juvenile chinooks — used to predict returns of adult spawners in the coming season — returned to the Central Valley last year, by far the lowest number ever counted. On average, about 40,000 juveniles or "jacks" return each year.

Salmon that spawn in Central Valley rivers form the backbone of the West Coast's commercial and recreational salmon fishery and are caught by fisherman as far north as British Columbia,

"Sacramento fish are really what the fishery depends on," said Chuck Tracy, who heads the council's salmon technical team. "When Central Valley fish are low it gets really hard to catch fish even if you're given the opportunity."

The council plans to meet in Sacramento in March to discuss possible restrictions on the salmon season that begins in May. Final decisions will be made at its meeting in Seattle in April.

Video

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