SnippETS - 27 March 2008
Welcome

Welcome to another two weekly review of energy and environmental events and developments from both here in New Zealand and on an international basis. As always we hope you find our collection of stories to be of interest in what continues to be an high-growth market.

Wellingtonians are more environmentally friendly on their commute to work than Aucklanders, which suggests that corporations located in Wellington have smaller carbon footprint than those in Auckland.  However just where does the boundary for corporate emissions fall – in the home or at the office?  Are we someday going to see employment contracts stipulating the means that one gets to work – “check in your pedometers at the end of the week”.

The EPA has released a report that suggests rapid development of “advanced energy technologies” will allow the US economy to grow under a cap on global warming emissions (80% from 2010 to 2030 rather than 81% over the same period without an emissions cap).

China is talking other nations into taking a carbon diet, whilst at the same time its CO2 emissions are said to be growing at twice the rate previously assumed.  Likely due to provincial development focussing on short-term growth, rather than long-term sustainable solutions.  Meanwhile, the global emissions trading market is reported by Point Carbon as growing 80% by value, and 60% by tonnage during 2007.

Australian wine producers are feeling the pinch – with water prices lifting from AU$300 to AU$900 per thousand cubic metres.  It’s worth noting that some of our rural colleagues pay more NZ$900, which at AU$0.87:NZ$1.00 equates to AU$780. 

While glaciers continue to shrink, soot is in the limelight for its contribution to global warming – suggested in the order of 0.9W/m2, which exceeds the 0.2 to 0.4W/m2 previously considered for “black” carbon warming. 

CAPITAL'S THE QUEEN OF GREEN
KERRY WILLIAMSON - The Dominion Post | Wednesday, 05 March 2008
 

 

Wellington is significantly greener than Auckland thanks to the capital's love affair with public transport, a new study suggests.

The city's sustainability is now set to become a tool in enticing businesses away from Auckland, as the environment becomes as important as their bottom line.

"The sustainable model-city for New Zealand is not Auckland," said Ian Cassels, managing director of The Wellington Company and an advocate of sustainable development. "Our nation should be thinking differently about its capital city.

We should start talking it up." The study, prepared for development company The Wellington Group and supported by the Property Council of New Zealand, found commuters in the capital use buses, trains, bicycles - and foot power - significantly more than their northern counterparts. The capital's dependence on public transport gives the city a much smaller carbon footprint

. Mr Cassels said the findings should become part of a wider push to attract corporates to Wellington. "If you want a future, and it's planned, then you must be sustainable. [Companies] need to start thinking about outsourcing work to Wellington for environmental benefits. "The Government ought not to be pushing Auckland ... it's just wrong."

The study involved an online survey of more than 1300 staff at 41 job sites in New Zealand. It found Wellington workers were more likely to use public transport than commuters in often-gridlocked Auckland. Last year saw a reduction in public transport patronage in Greater Wellington, prompted by decreasing fuel prices, a fare increase and bus service disruptions in the capital in early 2007.

A customer satisfaction survey conducted by Greater Wellington regional council last July found that Wellingtonians were avoiding buses because they were unreliable and inconvenient. Dissatisfaction could continue this year, with a fare increase planned for the region's Metlink service in early September.

Peter Glensor, chairman of the regional council's transport and access committee, says work is needed to ensure the transport system remains viable.

"It's a competitive edge that we have got to build on. That's why it is such a high priority to get it back into shape again." ECO-FOOTPRINTS Among the study's findings were:

  • 13 per cent of Wellington workers drive alone compared with 66 per cent in Auckland.
  • 16 per cent of Wellington workers travel by bus (Auckland 5 per cent).
  • 16 per cent of Wellington workers travel to work by train (Auckland 1 per cent).
  • Commuters in the capital also tend to spend part of their morning and evening journeys to and from work on foot - 14 times more likely than Aucklanders.
  • Twice as many Wellingtonians walk to work as Aucklanders.

Click here to view the detailed report

 

http://www.thewellingtoncompany.co.nz/green_wgtn.html

EPA Analysis Forecasts Robust Economic Growth With Climate Change Law

Posted: 14-Mar-2008; Updated: 14-Mar-2008

Contact: Tony Kreindler, 202-572-3378 or 202-210-5791 (cell)

Washington – March 14, 2008)

A new Environmental Protection Agency analysis of leading climate change legislation shows that the U.S. economy can grow substantially with an ambitious cap on global warming pollution, given that the bill will continue to speed the development of advanced energy technologies.

"EPA's results for the scenario that most resembles the bill confirm what we have seen in every reputable analysis.

We can grow our economy and tackle global warming at the same time,” said Nathaniel Keohane, PhD, director of economic policy and analysis at Environmental Defense Fund. “The up-front costs EPA identifies are a sound investment for a strong economy down the road. For clean air, less imported oil, and avoiding the damage of climate change, they are a bargain."

According to EPA’s analysis of the Lieberman-Warner Climate Security Act (S. 2191), economic modeling with confident high-technology assumptions shows the U.S. gross domestic product (GDP) growing 81 percent between 2010 and 2030 without a national emissions cap – and virtually the same amount, 80 percent, with the bill’s limit on greenhouse gases.

Other key findings of the EPA high-technology model run include: * Under the Climate Security Act, annual household consumption grows by 81 percent from 2010 to 2030 – just two percentage points less than what growth would be otherwise.

  • Emissions allowances would cost $22 - $35 per ton in 2015 and $28 - $46 in 2030 – significantly less than other model runs that do not account for current energy policy and market mechanisms to manage costs.
  • National electricity prices would never rise more than 20 percent over 2005 levels – and that change would happen slowly over decades.

"No single model run tells the full story, but we think the high-technology run in this case represents the best single set of assumptions. It underscores the need for continuing technological innovation, and the best way to drive that is by putting a cap and trade market in place,” Keohane said. "The high technology scenario is a map to the pot of gold, and frankly the most realistic path, but the Bush Administration and Senator Inhofe have forced EPA to run other scenarios that are extremely unlikely -- just to frighten the public about doing what's necessary.

“But one key question remains unanswered: what it will cost if we don't act quickly to cap emissions. There are two sides to the ledger," Keohane added. According to recent studies by the University of Maryland and Tufts University, unchecked climate change will strain public budgets and impact jobs and competitiveness in every economic sector.

According to the University of Maryland study, the most expensive climate policy for the U.S. is not having one.

### About Environmental Defense Fund Environmental Defense Fund is at the forefront of an innovation revolution, developing new solutions that protect the natural world while growing the economy. Founded in 1967 and representing more than 500,000 members, the group creates powerful economic incentives by working with market leaders and relying on rigorous science.

For more information, visit edf.org.

http://www.edf.org/pressrelease.cfm?contentID=7738

 
China tells developed world to go on climate change ‘diet’

he developed world should go on a climate change diet rather than lecture China over its rising greenhouse gas emissions, Chinese Foreign Minister Yang Jiechi said Wednesday.

Yang told reporters that China’s per capita emission of the gases linked to global warming remained less than one third the average in developed countries. “It’s like there is one person who eats three slices of bread for breakfast, and there are three people, each of whom eats only one slice.

Who should be on a diet?” he said at a press conference on the sidelines of parliament. “If per capita energy consumption is viewed in the context of the fundamental principle that people are all born equal, then I don’t think some people are justified in talking about the large emissions of China, as if they have the moral high ground.”

China’s greenhouse gas output has soared in recent years as its largely coal-powered economy has expanded at double-digit pace, and it now ranks alongside the United States as the world’s biggest emitter.

However China has a population of more than 1.3 billion people, compared with around 300 million in the United States. United Nations scientists and environmentalist have warned that, regardless of who is to blame, there will be devastating consequences for the world unless all countries take urgent action to fight climate change. afp

http://www.dailytimes.com.pk/default.asp?page=2008%5C03%5C17%5Cstory_17-3-2008_pg6_19

 
Growth in China's CO2 Emissions Double Previous Estimates
SAN DIEGO, California, March 11, 2008 (ENS)

The growth in China's emissions of the primary greenhouse gas carbon dioxide, CO2, is far greater than previous estimates, making the goal of stabilizing atmospheric greenhouse gases much more difficult, finds a new analysis by economists at the University of California.

The authors of the study, Maximillian Auffhammer, UC Berkeley assistant professor of agricultural and resource economics, and Richard Carson, UC San Diego professor of economics, based their findings upon pollution data from China's 30 provincial entities.

Auffhammer said the study should serve as an alarm challenging the belief that actions taken by the wealthy, industrialized nations alone represent a viable strategy towards the goal of stabilizing atmospheric concentrations of carbon dioxide.

"Making China and other developing countries an integral part of any future climate agreement is now even more important," said Auffhammer.

"It had been expected that the efficiency of China's power generation would continue to improve as per capita income increased, slowing down the rate of CO2 emissions growth," he said.

The Jinzhushan coal-fired power plant in China's Hunan province (Photo courtesy Hunan Datang Xianyi Technology Co Ltd)

"What we're finding instead is that the emissions growth rate is surpassing our worst expectations," he said, "and that means the goal of stabilizing atmospheric CO2 is going to be much, much harder to achieve."

Previous estimates, including those used by the Intergovernmental Panel on Climate Change, say the region that includes China will see a 2.5 to five percent annual increase in CO2 emissions between 2004 and 2010.

The new University of California analysis puts that annual growth rate for China to at least 11 percent for the same time period.

Based upon these findings, the authors say current global warming forecasts are "overly optimistic," and that action is urgently needed to curb greenhouse gas production in China and other rapidly industrializing countries.

The study is scheduled for print publication in the May issue of the "Journal of Environmental Economics and Management," but is now online.

The researchers' most conservative forecast predicts that by 2010, there will be an increase of 600 million metric tons of carbon emissions in China over the country's levels in 2000. This growth from China alone would dramatically overshadow the 116 million metric tons of carbon emissions reductions pledged by all the developed countries in the Kyoto Protocol.

The protocol was never ratified in the United States, which was the largest single emitter of carbon dioxide until 2006, when China became the largest emitter.

The projected annual increase in China alone over the next several years is greater than the current emissions produced by either Great Britain or Germany.

Researchers traditionally calculate the CO2 emissions for a region or country from data on fossil fuel consumption. Existing models then use those emission figures and factor in such variables as population size, a society's affluence and technology developments to forecast the growth of greenhouse gas emissions.

The Shentou-2 coal-fired power plant in China's Shanxi province (Photo courtesy Skoda Export)

In explaining the startling differences in results from previous estimates for China's carbon emissions growth, the UC researchers point out that they used province-level figures in their analysis to obtain a more detailed picture of the country's CO2 emissions up to 2004.

"Everybody had been treating China as single country, but each of the country's provinces is larger than many European countries, both in geographic size and population," said Carson.

"In addition, there is a wide range in economic development and wealth from one province to the next, as well as major differences in population growth, all of which has an effect on energy consumption that cannot be easily addressed in models based upon aggregate national data," he said.

Since data on fossil fuel consumption is not reported at the province level in China, the researchers used waste gas emissions, available from China's state environmental protection administration reports, as a proxy for CO2 emissions in this paper.

Moreover, the researchers said, the majority of other studies forecasting China's CO2 emissions relied upon information from nearly a decade ago. During the 1990s, per capita income was growing faster than the use of energy in China, which typically relates to slower growth in carbon emissions.

"A notable shift occurred in China around the year 2000, around the time when hope for an agreement with the U.S. on the Kyoto Protocol began to diminish along with external pressure for China to reduce its emissions," said Carson. "Energy use started to grow faster than income, and much of the energy that was used wasn't efficient."

The authors also pointed out that after 2000, China's central government began shifting the responsibility for building new power plants to provincial officials who had less incentive and fewer resources to build cleaner, more efficient plants, which save money in the long run but are more expensive to construct.

"Government officials turned away from energy efficiency as an objective to expanding power generation as quickly as they can, and as cheaply as they can," said Carson. "Wealthier coastal provinces tended to build clean-burning power plants based upon the very best technology available, but many of the poorer interior provinces replicated inefficient 1950s Soviet technology."

"The problem is that power plants, once built, are meant to last for 40 to 75 years," said Carson. "These provincial officials have locked themselves into a long-run emissions trajectory that is much higher than people had anticipated. Our forecast incorporates the fact that much of China is now stuck with power plants that are dirty and inefficient."

Copyright Environment News Service (ENS) 2008. All rights reserved.

http://www.ens-newswire.com/ens/mar2008/2008-03-11-01.asp

 
World emissions trading market grows by 80% to US$60bn

Source: Point Carbon

Published Mar. 12, 2008

Point Carbon, a world-leading provider of independent analysis and consulting services for governments and companies in the global power, gas and carbon markets, this week released its “Carbon 2008” report which includes the results of the largest survey ever conducted into the carbon market. Point Carbon received over 3700 responses to their comprehensive survey, 40 percent of which trade or own European Union Allowances (EUAs) or Certified Emission Reductions (CERs).

Combined with additional Point Carbon analysis, the report presents an overview of the carbon market in 2007, an outlook for 2008 and expectations for the remainder of the first Kyoto period and beyond.

The report explores in-depth the following key findings:

• Global carbon markets worth USD $60 billion (€40 billion) in 2007, up by 80 percent from 2006. The total traded volume increased by 64 percent from 1.6 Gt (1.6 billion tons) in 2006 to 2.7 Gt in 2007

• There seems to be a generally bullish sentiment on carbon, not necessarily reflected in current market prices. Survey respondents now on average expect a carbon price of USD $37/ton (€24/ton) in 2010 and USD $54/ton (€35/ton) in 2020, which is USD $9 (€6) and USD $15 (€10) higher, respectively, than they expected a year ago. This demonstrates that market participants now realize that the EU ETS will face a considerable shortage and that much of this will have to be met through reductions taking place in Europe.

• General optimism that we are moving towards a global carbon market. More than 70 percent of respondents believe that a climate agreement for the post-2012 period will be agreed upon before the end of the Kyoto period. In Point Carbon’s view, getting the United States on board will be vital for a new agreement. Interestingly, survey respondents do not necessarily agree, with about 77 percent expecting an agreement to be reached regardless of whether or not the US participates. However, more than half of respondents expect that the US will take on reduction commitments and participate in a new agreement.

• Carbon prices are now seen as an important factor in the operating and investment decisions of companies. Over two-thirds of survey respondents claim that the EU ETS has caused emission reductions of some kind, either already implemented or at the planning stage. While this might be good news for the development of greenhouse gas emissions in Europe, expect to see similar developments in other places around the world in the years to come. Over 72 percent of the survey respondents expect there to be a global reference price for carbon by 2020 and 73 percent of EU ETS survey respondents agree that the carbon price is relevant to investment decisions. As the world increasingly takes into account the cost of emissions and the value of reductions, the carbon market will continue to incentivize investments in cleaner technology and emission reductions.

“The global carbon market is heating up at a fast and furious pace, while forming at a time of ever-increasing attention to climate change,” said Kjetil Røine, Manager of Point Carbon’s Carbon Market Research team.

“Last year was another record one in the market, with markets worth more than USD $60 billion (€40 billion) in 2007 up 80 percent from 2006.”

Point Carbon predicts that the global carbon market will see 4.2 billion tons carbon emissions (C02e) transacted during 2008, up 56 percent from 2007. At today’s prices, that would make the market worth USD $92 billion (€63 billion).

“We expect that the general trend of increasing traded volumes will continue to expand exponentially as the global market becomes more mature and sophisticated. An increase in contract types, more players and markets and greater competition between market players together will generate momentum for higher volumes,” said Røine.

Point Carbon is the leading global provider of analysis, news, forecasting, information and market intelligence for energy and environmental markets. Point Carbon has global outreach with more than 15,000 subscribers in more than 150 countries. Point Carbon’s in-depth knowledge of power gas and C02 emissions market dynamics positions us as the number one supplier of unrivalled market intelligence on these markets.

Its staff consists of over 150 specialists and includes experts in international and regional climate policy, mathematical and economic modelling, forecasting methodologies, risk management and market reporting. Point Carbon produces regular reports in English, Japanese, Mandarin, Portuguese, Spanish, Russian and Norwegian. Point Carbon has offices in Oslo (HO), Washington, DC, London, Kiev, Malmó and Tokyo.

 

http://www.environmental-expert.com
Australian wine industry feels heat from climate change

By Victoria Thieberger

Posted 8:03 am EDT

MELBOURNE, Mar. 25, 2008 (Reuters) — Australian grape growers reckon they are the canary in the coalmine of global warming, as a long drought forces winemakers to rethink the styles of wine they can produce and the regions they can grow in.

The three largest grape-growing regions in Australia, the driest inhabited continent on earth, all depend on irrigation to survive. The high cost of water has made life tough for growers.

Some say they probably won't survive this year's harvest, because of the cost of keeping vines alive. Water prices surged above A$1,000 a megaliter last year from around A$300.

"On the back of three very ordinary years, this year is probably the worst that could have occurred with the drought and the high costs of water," said Michael de Palma, a mid-sized grower in Redcliffe near Mildura in the Murray Valley, one of the country's three big wine regions.

A farm worker hand prunes Merlot vines on an irrigated farm near Griffith, 490 km (305 miles) west of Sydney, August 22, 2007. Australian grape growers reckon they are the canary in the coalmine of global warming, as a long drought forces winemakers to rethink the styles of wine they can produce and the regions they can grow in. REUTERS/Tim Wimborne

"In this depressed situation, growers have only two choices, stick it out as long as they can or to cut their losses and get out," said de Palma, who is part-way through a weather-influenced early harvest on his 40-hectare vineyard.

Recent rains have bypassed the country's parched inland wine regions, and have fallen half-way through the harvest in eastern Australia, too late to help the berries and instead causing a mildew-like disease.

De Palma, the chairman of Murray Valley Winegrowers, said he would wait to see the results of his harvest before deciding whether to sell up or hold on to his vineyard, which mainly supplies Foster's Group, Australia's largest wine company.

He estimated around 40 percent of grape growers in the Murray Valley who had access to water trading couldn't afford to buy water last year, while most of the others had to borrow to do so, going deeper into debt.

Industry groups estimate up to 1,000 winegrowers out of around 7,000 may be forced to leave the industry this year because their vineyards are no longer financially viable.

"There's a Darwinian economics going on at the moment, and the outcome remains to be seen," said Paul Henry, general manager of market development at Australian Wine and Brandy Corp.

"One might say we're guilty of the charge of being slow to change thus far, but the experience of this harvest will change the outlook for Australian producers."

In some regions, such as the Murray Valley, wine grape yields are down 30-40 percent.

Australia's harvest is forecast to be down on average years, which may cut into exports in the A$6 billion industry.

Wine exports total some A$3 billion. Australia is the number one supplier of imported wine in the United Kingdom with a market share of 23 percent and it is second in the United States.

The smaller 2008 vintage, made worse by a record-breaking heatwave which withered grapes on the vines, is expected to push up prices and spell the end of cheap bulk wine after a three-year glut that produced a rash of no-name brands called "cleanskins."

WARMER AND DRIER

Scientists say Australia's vast inland winegrowing districts face the greatest degrees of warming.

These are the Riverland on the Murray River in South Australia, the Murray Valley, and the Riverina on the Murrumbidgee River in New South Wales.

And it is the grape-growers in these semi-arid areas that already face the greatest hardship, with calls to rural financial counseling services soaring in recent months.

"We believe there are 800 to 1,000 growers predominantly in Murray Valley and the Riverland in South Australia who are going to have to make a decision this year about whether they stay or go," said Wine Grape Growers chief Mark McKenzie.

A landmark study by the Commonwealth Scientific and Industrial Research Organization (CSIRO) found these areas would warm by 2.5 degrees Celsius by 2030.

Last year was one of the warmest on record for southern Australia, where all of the nation's winegrowing regions lie, as well as one of the driest.

And that is enough to change harvesting times as berries ripen earlier, which can also affect their quality.

"Climate change is the biggest issue we face. Relatively small changes in temperature and precipitation do have reasonably large impacts in terms of wine style," said Winemakers' Federation Chief Executive Stephen Strachan.

"Wine is a bit of a bellwether in terms of some of the very immediate impacts you see from climate change."

According to the CSIRO, grape quality could fall by 23 percent by 2030 because of the climate changes, and suitable land for viticulture could be cut by 10 percent.

The solution may be for cooler climate areas, such as the bayside Mornington Peninsula south-east of Melbourne and the Yarra Valley to the east, to expand the varieties they grow.

The southern island state of Tasmania is also attracting attention as a region that could dramatically boost its grape cultivation, with its mild weather closer to that of New Zealand than the parched mainland.

Indeed, wine-growers in neighboring New Zealand are upbeat about a future that includes climate change, because higher temperatures are expected to make cold areas of New Zealand more temperate and better suited to grape growing.

CHANGING TASTES

Warmer temperatures and less rainfall will also mean changes in the grape varieties the traditional growing areas produce.

"Styles in existing regions will change," said Strachan of the Winemakers' Federation.

"Most regions can produce most grape varieties, but whether they can produce them to quality levels that the market expects is the big question."

While Australia's signature shiraz fares quite well in a hot climate, cabernet, pinot noir and merlot among the reds and chardonnay, sauvignon blanc and riesling among the whites may have a tougher time.

"Merlot is relatively intolerant of water stress, and it doesn't cope well with periods of very high temperatures," said Snow Barlow, a winemaker and the chairman of the agriculture school at Melbourne University, who co-authored the CSIRO study.

Experts say Australian growers need to experiment with tougher varieties from Spain and Sicily. Tempranillo from Spain is one of Australia's fastest-growing varieties, while along the Murray river, the Corsican grape Vermentino is being planted.

"Wine companies build up brands. Whether we can convince the world to take to Australian Sicilian varieties in same way they take to Australian shiraz, that's quite a big commercial question," said Barlow.

Barlow, who owns the boutique Baddaginnie Run vineyard nestled in the foothills of the Strathbogie Ranges in Victoria state, said climate change shaped his decisions on what varieties to plant when he started his vineyard 10 years ago.

Even so, merlot has proved problematic and he did not produce a merlot last year because of poor quality. His $20 merlot has won awards in better years.

Over time, different root stocks that are able to provide good fruit with lower water requirements will become more common.

But it can take months or years to import new varieties through Australia's strict quarantine system, and three to four years to establish new rootstock for commercial production.

For grape growers already deep in debt, that is simply too long to wait.

(Editing by Megan Goldin)

 

http://www.newsdaily.com/stories/syd225086-australia-wine/
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Glaciers suffer record shrinkage
The rate at which some of the world's glaciers are melting has more than doubled, data from the United Nations Environment Programme has shown.

Average glacial shrinkage has risen from 30 centimetres per year between 1980 and 1999, to 1.5 metres in 2006. Some of the biggest losses have occurred in the Alps and Pyrenees mountain ranges in Europe. Experts have called for "immediate action" to reverse the trend, which is seen as a key climate change indicator.

Some glaciers in Europe have suffered significant losses

Estimates for 2006 indicate shrinkage of 1.4 metres of 'water equivalent' compared to half a metre in 2005. Achim Steiner, Under-Secretary General of the UN and executive director of its environment programme (UNEP), said: "Millions if not billions of people depend directly or indirectly on these natural water storage facilities for drinking water, agriculture, industry and power generation during key parts of the year.

"There are many canaries emerging in the climate change coal mine. The glaciers are perhaps among those making the most noise and it is absolutely essential that everyone sits up and takes notice.

Litmus test

He said that action was already being taken and pointed out that the elements of a green economy were emerging from the more the money invested in renewable energies.

Mr Steiner went on: "The litmus test will come in late 2009 at the climate convention meeting in Copenhagen. "Here governments must agree on a decisive new emissions reduction and adaptation-focused regime. Otherwise, and like the glaciers, our room for manoeuvre and the opportunity to act may simply melt away."

Dr Ian Willis, of the Scott Polar Research Institute, said: "It is not too late to stop the shrinkage of these ice sheets but we need to take action immediately."

The findings were compiled by the World Glacier Monitoring Service which is supported by UNEP. Thickening and thinning is calculated in terms of 'water equivalent'. Glaciers across nine mountain ranges were analysed.

Dr. Wilfried Haeberli, director of the service, said: "The latest figures are part of what appears to be an accelerating trend with no apparent end in sight. "This continues the trend in accelerated ice loss during the past two and a half decades and brings the total loss since 1980 to more than 10.5 metres of water equivalent."

During 1980-1999, average loss rates had been 0.3 metres per year. Since the turn of the millennium, this rate had increased to about half a metre per year.

Glaciers have been monitored for more than a century

The record annual loss during these two decades - 0.7 metres in 1998 - has now been exceeded by three out of the past six year (2003, 2004 and 2006). On average, one metre water equivalent corresponds to 1.1 metres in ice thickness.

That suggests a further shrinking in 2006 of 1.5 actual metres and since 1980 a total reduction in thickness of ice of just over 11.5 metres or almost 38 feet. In its entirety, the research includes figures from around 100 glaciers, with data showing significant shrinkage taking place in European countries including Austria, Norway, Sweden, Italy, Spain and Switzerland. Norway's Breidalblikkbrea glacier thinned by almost 3.1 metres in one of the largest reductions.

 
Soot may play big role in climate change

A new study says that black carbon pollution contributes more to global warming than previously thought.

Diesel fuel, used in many trucks, is a major source of black carbon in the U.S. and Europe, along with barbecues and wood-burning fireplaces. The particles are "what you see outside your door on the horizon," says atmospheric scientist V. Ramanathan.

Black carbon pollution, or soot, produced by burning wood, coal, cow dung and diesel fuel, may be a much greater contributor to global warming than previously suspected, according to a study released this week.

The report concludes that the atmospheric warming effect of black carbon pollution is as much as three to four times the consensus estimate released last year in a report by the U.N.-sponsored Intergovernmental Panel on Climate Change.

The findings are of concern to areas such as the Indian subcontinent, where retreating glaciers in the Himalayas have the potential to flood densely populated areas and affect the drinking water of billions of people.

Unlike carbon dioxide, which traps solar energy radiating back from Earth's surface, black carbon particles absorb solar radiation as it enters Earth's atmosphere, increasing its heat. In addition, when they precipitate onto snowy areas, they increase heat absorption that leads to glacial melting.

The particles come from burning dung, wood, coal and other materials for household use, and travel in "brown clouds."

"In Los Angeles, it's what you see outside your door on the horizon," said V. Ramanathan, an atmospheric scientist with the Scripps Institution of Oceanography at UC San Diego. Ramanathan performed the study with Greg Carmichael, a chemical engineer at the University of Iowa.

The paper concluded that black carbon's warming effect in the atmosphere is about 0.9 watts per meter squared, compared with the climate change panel's consensus estimate of 0.2 to 0.4 watts.

The report, titled "Global and regional climate changes due to black carbon," confirms similar conclusions of three previous model studies released in 2002 and 2005.

The paper concludes that carbon pollution contributes to global warming at a level that is about 60% of carbon dioxide's warming effect, which makes black carbon the second most important contributor to global warming after carbon dioxide.

A mass of black carbon in the atmosphere causes about 300,000 times as much instantaneous warming as the same amount of carbon dioxide, said Mark Jacobson, a professor of civil and environmental engineering at Stanford University who worked on the 2002 study. But whereas black carbon disappears within a couple of weeks, carbon dioxide continues to build up and can take centuries to completely dissipate from the atmosphere.

About 25% to 35% of black carbon in the atmosphere comes from South and East Asia.

In Europe and the U.S., diesel fuel, wood-burning fireplaces and barbecues are major sources of black carbon. Forest fires also are large sources of black carbon emissions.

Black carbon emissions in Western Europe and the U.S. have decreased about 300% in the last 30 years because of more-efficient coal combustion, a move away from wood-burning fireplaces, and cleaner, more efficient technology.

"The positive side of this discouraging story is we know how to cut down black carbon," Ramanathan said. "We have reduced it. So this is something we can do now."

Ramanathan said the new figure was higher than previous estimates because the study took into account the atmospheric range of black carbon, which can rise several miles into the atmosphere and is more effective at heating the higher it travels. It also explores the increased heating effect that occurs when black carbon particles mix with sulfates and other organic particles in the atmosphere. Because the other particles in the brown cloud reflect light, these reflections are bounced around and eventually absorbed by the black carbon particles, further magnifying their heating effect.

The report's data was drawn from NASA satellites and ground stations and from field studies near the Indian Ocean and California coast. Those numbers were then extrapolated to create a global figure for the black carbon warming effect.

"There's an uncertainty in the actual number, but what it does seem to confirm is really the main point," Jacobson said. "Black carbon warming is much stronger than the IPCC consensus number had estimated."

The study was funded by the California Energy Commission, the National Science Foundation, the National Oceanic and Atmospheric Administration and NASA. It was published Sunday in the online edition of Nature Geoscience.

The report concluded that black carbon pollution, which scientists blame for the premature deaths of more than a million people, is one of the major contributors to the retreat of the Himalayan glaciers. Black carbon particles that land on snow absorb more solar radiation and accelerate the melting of ice, previous studies have said.

 

http://www.environmental-expert.com
 
Quote Of The Week

Drill for oil? You mean drill into the ground to try to find oil? You’re crazy.

~ Unknown potential investor when approached by Col. Edwin L. Drake, who is credited with drilling the first commercial oil well in the U.S. (1859).

 
Technology Corner
Introduction to energy storage
What is energy storage?
  • Energy storage is needed to store electricity, heat and cold, which is produced at times of low demand and low generation cost and from intermittent energy sources such as wind and solar power. It is released at times of high demand and high generation cost or when there is no more generation capacity available.
  • Reliable and affordable energy storage is a prerequisite for using renewable energy in remote locations, for integration into the energy system and the development in a future decentralised energy supply system. Energy storage therefore has a pivotal role to play in the effort to combine a future, sustainable energy supply with the standard of technical services and products that we are accustomed to and need.
  • Energy storage is the most promising technology currently available to reduce fuel consumption in the transport sector. 
Diagram of energy sources, use of energy and energy storage

What are the current uses of energy storage technologies?

  • The decision to use an energy storage system depends both on the requirements of the application and the cost of competing solutions. In renewable energy systems, for instance, the use of fossil fuel based back-up generation and grid connection are competing solutions
  • Power stations, compressors, heating systems, etc. all have different performance characteristics as regards their response time to changing demand, their lead times for starting up or shutting down, and their most efficient points of operation.
  • Energy storage systems can usually be replaced by conventional energy generation. However, this can lead to an inefficient use of fossil fuels and a demand for investment in additional energy generators with high power output and fast response time.
  • The time required for energy generation from renewable sources, be they electricity or heat, cannot always be matched to the time of demand.
  • Energy storage systems are therefore an integral part of any renewable energy sources (RES) system.
  • Even when fuel-powered generation is used to cover periods of low RES generation, energy storage is required for economic reasons, as it is cheaper than the frequent use of a motor-driven generator.
  • Also, the stability of the electricity system and quality of the voltage supplied will be considerably higher when an energy storage system is used. The technical and economic optimum concerning the size of an electricity storage system needs to be defined in each case individually.
  • Conventional, commercially available lead-acid batteries have a very high-energy efficiency and all other technologies have to compete with this.
  • Batteries are the most expensive item in RES systems when the system's total lifetime costs are considered; and there are big variations in battery lifetime in different installations.
  • Excess electricity can always be stored cheaply in the form of heat and for a long time. However, the value of heat energy is much lower than the value of electricity.
  • In solar thermal systems for heating and cooling it is also necessary to store energy because heat generation depends on solar radiation for energy production. Overview of the technology

What are the different energy storage technologies?

  • Batteries
  • Flywheels
  • Reversible fuel cells
  • Electromagnetic
  • Compressed air
  • Super-capacitor
  • Pumped hydro storage

Different energy storage technologies coexist because their characteristics make them attractive to different applications. From a user point of view there are both technical and commercial criteria for selecting the most suitable technology.

What are the various aspects of the technologies and their applications?

Batteries and advanced batteries

Rechargeable batteries or accumulators are the oldest form of electricity storage and widely used. Batteries store electric energy in a chemical form. Their performance is linked in a complex manner to the materials used, the manufacturing processes and the operating conditions. Consequently, progress in battery technology is slow and the transfer of laboratory results into commercial applications is sometimes risky. Lithium ion and nickel-metal-hydride (NiMH) batteries are the only new battery technologies which have achieved significant market penetration in the last decade. Batteries can respond to changes in power demand within microseconds. Only super-capacitors equal such a response time. Batteries usually have very low standby losses and can have high energy efficiency, depending on the application and the details of the operation. Most batteries contain toxic materials, hence the ecological impact from uncontrolled disposal of batteries must always be considered.

Super-capacitors

Super-capacitors store electrical energy in the electric field between two electrodes. Ultra-capacitor, super-capacitor and electric double layer capacitor (EDLC) are also called electro-chemical capacitors working with chemical reactions or not like true capacitors. The fundamental design and electrical properties are those of conventional capacitors used throughout the electrical and electronics industry. EDLC uses electric double layer capacitance on both positive and negative electrodes.

Reversible fuel cell systems and redox flow batteries

Fuel cells convert hydrogen from a storage tank and oxygen from the air to water and generate a current from the electrochemical process. The electrochemical reaction itself is reversible. The fuel cells' energy capacity is determined by the size of the storage tanks for the active materials, and the power by the area of the electrodes and design of the reactor. Standby losses are low because the active materials are kept physically separate. Redox flow batteries are systems using materials other than hydrogen and oxygen. Their energy efficiency is higher than those of reversible fuel cells, but still below the energy efficiency of most batteries.

SMES (Super-conducting magnetic energy storage systems)

SMES store energy in the magnetic field of a coil made from special alloys. By cooling the conducting wires to - 269°C the resistance of the material to electrical current disappears, allowing it to conduct very high currents without electrical losses. When looking at the complete system, however, it is clear that there is considerable energy requirement for refrigeration. Also, the current has to flow through non-super-conducting components and solid-state switches, which cause resistive losses. Despite this, the overall efficiency in commercial applications is very high.

Flywheels

The energy is stored as kinetic energy in a rotating mass. The amount of energy stored increases with the square of the rotational speed, which is limited by the tensile strength of the material used.

Thermal storage (heat and cold)

Conventional heat and cold storage systems simply store excess energy in a large tank using the working medium at the temperature required for later use. Virtually every cooling and heating system has such storage tanks.

Compressed gas storage

Compressed air tanks are widely used in industry to provide a constant source of compressed air with uniform pressure in the range of 8-10 bar. There is renewed interest in compressed air storage for covering the demand of peak electricity or for small wind/hybrid applications, where the energy-to-power ratio of batteries is unsuitable, either because the energy content is very high but the power requirement low, or the energy through-put is very high compared to the energy content.

Pumped hydro storage

Pumped hydro storage is a conventional energy storage technology utilised by the electrical industry. Water in a basin at the top of a mountain is used to drive a generator in a reservoir at a lower level. When surplus energy is available, the water is pumped back up again. The power output and the cost efficiency of pumped hydro storage depends on the difference in height.   

 
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