Monday, November 19, 2012
Study: Winds driving Record Antarctic Sea ice growth, global sea ice extent still declining
While the Arctic sea-ice has experienced a dramatic reduction, Antarctic sea ice continues to increase in extent hitting a new record in October this year. So what's going on?
The trend for a gradual increase in Antarctic Sea ice has puzzled scientists. Firstly, the gradual increase in Antarctic sea ice is far less than the amount of sea ice vanishing in the Arctic Sea. Global sea ice trend still shows a marked retreat.
But in the Antarctic working out why the sea ice trend has seen a one percent increase per decade since the 1970s has bamboozled the scientists. A new study based upon 18 years of detailed satellite ice motion measurements has put forward that it is primarily local winds pushing ice mainly north creating polyanas in the ice flows where more ice can easily form.
Labels:
Antarctic,
polar,
scepticism,
sea ice,
wind
Sunday, November 18, 2012
Climate change connection between Global temperatures, ice volume and sea level
There is a rapid response connection between polar temperature changes, ice volume and sea leavel according to a new method of dating of sea level records and comparing them with temperature data and ice core records for the last 150,000 years.
Previously the dating of ice-volume changes relied on the ‘Red Sea relative sea-level (RSL) record’. However this dating method did not have independent age control which inhibited detailed comparison with other well-dated climate parameters, such as temperature or CO2 records from ice cores from Greenland and Antarctica. The new method of dating the RSL record used Mediterranean data from radiometric (Uranium-series) dating of cave deposits which could be applied to the last glacial cycle reaching back 150,000 years, providing a continuous sea-level record with excellent independent age control.
According to the study sea level rise reached speeds of "at least 1.2 metres per century during all major episodes of ice-volume reduction" in the last 150,000 years.
One of the study authors, Professor Elco Rohling from the National Oceanography Centre Southampton said: "This is the first time that these rates could be measured for any other period than the end-of-ice age 'terminations/deglaciations'. Although it is always hard to step from palaeo reconstructions to future projections, it suggests that when significant ice-volume adjustments happen, they are rarely slow."
Friday, November 16, 2012
Climate change implications of new study on methane emissions in coal seam gas field
Coal seam gas has been touted as a green transitional fuel, far less polluting than coal, but a new study implies it may not be as green or climate friendly as the industry makes out. It hinges on the level of fugitive emissions produced in development and production of a gas field. A study by two scientists from Southern Cross University based in Lismore, northern NSW, detected much higher levels of the strong greenhouse gas methane around the Tara gas field on the Darling Downs of Queensland west of Brisbane.
Related: The Conversation: Mike Sandiford on A Lot of Hot Air in the Coal to Gas Transition| Renee Santoro on Methane makes shale gas a current climate danger
Action: Getup! have started a Dirtier than Coal? campaign calling on Federal Climate Change Minister Greg Combet to commission urgent research into the climate impacts of coal seam gas, and to make sure that CSG companies start accounting, and paying, for fugitive emissions.
Monday, November 12, 2012
Origin Energy under scrutiny over anti-renewables stance
Origin Energy, Australia's largest energy retailer, came under intense scrutiny today from shareholders at the Annual General Meeting in Sydney over it's energy portfolio placing great emphasis on development of gas, poor investment in wind and solar power, and a campaign by Managing Director Grant King to destabilise the Renewable Energy Target.
At one stage a banner was quickly unfurled infront of the board on the stage which said "Origin: Build wind and solar, not coal and gas". It was just as quickly taken down.
Labels:
Australia,
CSG,
energy,
Origin Energy,
renewables
Sunday, November 11, 2012
Indian monsoon more likely to fail as global warming accelerates - Climate tipping point
A new predictive study for future monsoon failure in India says that full season failure will become much more likely in the next two hundred years. Failure of the Indian Seasonal Monsoon (ISM) has been identified as a climate change tipping point by climate scientists.
The study highlighted that monsoon rains could fail about one year in every five between 2150 and 2200 with continued global warming due to continued human burning of fossil fuels, and related shifts in tropical air flows.
More than a billion people are dependent on the reliability of the Indian summer monsoon (ISM) for agricultural productivity. A small variability in rainfall on the Indian sub-continent has large impacts on agriculture. Lower rainfall can reduce crop yield, while excessive rain causes flooding damaging to crops and disruption to peoples' lives. India's monsoon lasts from June to September each year.
Labels:
India,
monsoon,
PIK,
precipitation,
science,
tipping point
Friday, November 9, 2012
Australia commits to Kyoto 2 climate change treaty
Australia's Minister for Climate Change and Energy Efficiency, Greg Combet, today announced that Australia is ready to join a second commitment period of the Kyoto Protocol.
The Kyoto Protocol first commitment period is due to expire at the end of 2012. The second commitment period will extend the binding international treaty to 2020 when it is envisaged a much broader treaty encompassing developed and developing countries will come into effect. Australia signed the Kyoto Protocol in 2007 at the United Nations Bali meeting shortly after the election of the Labor Government.
"Australia joins as countries around the world are taking action to combat climate change." said Greg Combet. "Joining a second commitment period will ensure Australian businesses have access to international credits under the Clean Development Mechanism, helping Australia reduce emissions at the lowest cost to the economy. "
The Kyoto Protocol first commitment period is due to expire at the end of 2012. The second commitment period will extend the binding international treaty to 2020 when it is envisaged a much broader treaty encompassing developed and developing countries will come into effect. Australia signed the Kyoto Protocol in 2007 at the United Nations Bali meeting shortly after the election of the Labor Government.
"Australia joins as countries around the world are taking action to combat climate change." said Greg Combet. "Joining a second commitment period will ensure Australian businesses have access to international credits under the Clean Development Mechanism, helping Australia reduce emissions at the lowest cost to the economy. "
Labels:
Australia,
COP18,
Kyoto Protocol,
negotiations,
USA
Martin Ferguson rebuffs Coal CEO Twiggy Palmcock in launching Energy paper
While Federal Resources and Energy minister Martin Ferguson was launching a white paper on energy, the press conference was interrupted by that scallywag Victorian Coal CEO Twiggy Palmcock who thanked the Minister for his support of the fossil fuel industry.
"I'd just like to say thank you Mr Ferguson, for being an excellent puppet for the fossil fuel industry. And I'd also like to say thank you on behalf of Twiggy Palmcock of Excretum Mining - my good self, and my friends Gina and other allies." announced Twiggy.
"We are very happy to have you representing our interests. Thank you Mr Ferguson for helping regional communities drink water and coal from the same tap. It's a marvellous outcome for all our regional communities in this situation. That they can now drink gas from the taps as well. Thank you very much Mr Ferguson" said Twiggy Palmcock, CEO of Excretum Mining.
Related: 2012 Energy white paper | RenewEconomy: Ferguson spies a green energy future … and steps on the gas | The Conversation: Energy White Paper plans to burn, burn, burn it all | A tale of two energy visions: China and Australia | Tony Abbott rebuffs Victorian coal mining magnate
Labels:
coal,
CSG,
energy,
fossil fuels,
humour,
Martin Ferguson,
Twiggy Palmcock
Thursday, November 8, 2012
Business as usual Carbon emissions heading towards 6C of global warming this century
A new report by PriceWaterhouseCoopers (UK) has warned that if we continue with business as usual with current global carbon emission reduction we are likely to hit 6 degrees Celsius or more of global warming towards the end of the century, overshooting the agreed upon global goal of limiting warming to 2 degrees to avoid dangerous and very extreme climate impacts.
The report is an annual analysis of the Low Carbon Economy Index devised by PriceWaterhouseCoopers (PwC), measuring developed and emerging economies progress towards reducing emissions linked to economic output.
Wednesday, November 7, 2012
Tokelau ditches diesel for 100 percent solar PV power
The tiny self governing territory of Tokelau in the South Pacific has become entirely solar-powered, with the third and final photovoltaic solar farm being turned on at the end of October 2012.
Tokelau consists of 3 small atolls with a population of about 1500 people 450km north from Samoa, and a dependent territory of New Zealand. The atolls are low lying with perhaps the highest points just 2 metres above sea level. Rising seas this century threaten the future of these islands with 1 metre rise in global sea level due to climate change conservatively predicted by the end of the century.
Labels:
Pacific,
renewables,
solar,
Tokelau
Saturday, November 3, 2012
Tony Abbott rebuffs Victorian coal mining magnate Twiggy Palmcock
Did you hear that Tony Abbott got heckled at Melbourne University the other day during his red tape speech? Actually it was just two young coal businessmen keen to meet their hero! Yes, Victorian mining magnate Twiggy Palmcock, CEO of Excretum Mining and sidekick Michael Higgins Beaumont, founder of Australia's Young Coal Champions, who were both keen to meet their hero and leader of the Liberal Party .
They attended the Secure the Future Conference to thank Tony Abbott personally for his "unwavering support of the fossil fuel industry".
They explain in this video how they just wanted to say "Thank you Tony" and urge him to encourage exploitation of Victoria's low grade brown coal and continue the massive tax subsidies for fossil fuel companies to keep them competitive with the upstart renewable technologies of solar and wind power.
"Because as we all know and as Tony has told us Climate change is a conspiracy theory invented by German zoo keepers to bring attention to their celebrity polar bears." said Twiggy.
Labels:
coal,
humour,
Tony Abbott,
Twiggy Palmcock,
Victoria
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