is Global Warming undeniable?

Scientists say global warming is undeniable 

THE world will be hotter by 2100 than at any time in the past few million years if greenhouse gas emissions continue unabated, the Australian Academy of Science warns in a new report.
Global emissions would need to peak within the next 10 years, and then decline rapidly for the world to have a better than 50-50 chance of avoiding a temperature rise of 2 degrees, it concludes.
Produced and reviewed by two expert panels, the 24-page report, The Science of Climate Change, Questions and Answers, acknowledges there are still scientific uncertainties about some of the details of climate change.
These include its impact at specific locations, the precise timing and size of future changes, and when high-risk tipping points might be reached.
But broad conclusions about the impact of high emissions are based on strong evidence and rigorous scientific scrutiny, its authors said. ''We are very confident that human-induced global warming is a real phenomenon.''
A former academy president, Kurt Lambeck, said the report was aimed at clarifying often contradictory comments from non-scientific ''instant experts''.
The report refutes many of the claims made by climate change sceptics, such as that the globe has been cooling since 1998, the sun is mainly to blame for recent warming, recent warming is part of natural variability, and volcanoes emit more carbon dioxide than human activities.
The report ''unambiguously'' supported the conclusion that a continued reliance on fossil fuels would lead to a warmer world, with predictions ranging from a 2 to 7 degree increase by 2100.
Source : http://www.smh.com.au

 

Our Choice: Global Warming Video

 Our Choice: Global Warming - Vancouver Film School (VFS)


Our Choice: Global Warming - Vancouver Film School (VFS)

Created by Vancouver Film School students Dewi Mariam and Christian Whiticar through the VFS Digital Design program.

How to Stop Global Warming-Top 45 Things To Do -3

31 Eat less meat
Methane is the second most significant greenhouse gas and cows are one of the greatest methane emitters. Their grassy diet and multiple stomachs cause them to produce methane, which they exhale with every breath.

32 Reduce the number of miles you drive by walking, biking, carpooling or taking mass transit wherever possible
Avoiding just 10 miles of driving every week would eliminate about 500 pounds of carbon dioxide emissions a year! Look for transit options in your area.

33 Start a carpool with your coworkers or classmates
Sharing a ride with someone just 2 days a week will reduce your carbon dioxide emissions by 1,590 pounds a year.

34 Don't leave an empty roof rack on your car
This can increase fuel consumption and CO2 emissions by up to 10% due to wind resistance and the extra weight - removing it is a better idea.

35 Keep your car tuned up Regular maintenance helps improve fuel efficiency and reduces emissions. When just 1% of car owners properly maintain their cars, nearly a billion pounds of carbon dioxide are kept out of the atmosphere. 36 Drive carefully and do not waste fuel You can reduce CO2 emissions by readjusting your driving style. Choose proper gears, do not abuse the gas pedal, use the engine brake instead of the pedal brake when possible and turn off your engine when your vehicle is motionless for more than one minute. By readjusting your driving style you can save money on both fuel and car mantainance. 37 Check your tires weekly to make sure they’re properly inflated Proper tire inflation can improve gas mileage by more than 3%. Since every gallon of gasoline saved keeps 20 pounds of carbon dioxide out of the atmosphere, every increase in fuel efficiency makes a difference!

38 When it is time for a new car, choose a more fuel efficient vehicle You can save 3,000 pounds of carbon dioxide every year if your new car gets only 3 miles per gallon more than your current one. You can get up to 60 miles per gallon with a hybrid! You can find information on fuel efficiency on Fuel Economy and on Green Cars websites. 39 Try car sharing Need a car but don’t want to buy one? Community car sharing organizations provide access to a car and your membership fee covers gas, maintenance and insurance. Many companies – such as Flex car - offer low emission or hybrid cars too! Also, see Zip Car.

40 Try telecommuting from home Telecommuting can help you drastically reduce the number of miles you drive every week. For more information, check out the Telework Coalition.

41 Fly less Air travel produces large amounts of emissions so reducing how much you fly by even one or two trips a year can reduce your emissions significantly. You can also offset your air travel carbon emissions by investingin renewable energy projects.

42 Encourage your school or business to reduce emissions You can extend your positive influence on global warming well beyond your home by actively encouraging other to take action. 43 Join the virtual march The Stop Global Warming Virtual March is a non-political effort to bring people concerned about global warming together in one place. Add your voice to the hundreds of thousands of other people urging action on this issue. 44 Encourage the switch to renewable energy Successfully combating global warming requires a national transition to renewable energy sources such as solar, wind and biomass. These technologies are ready to be deployed more widely but there are regulatory barriers impeding them. 45 Protect and conserve forest worldwide Forests play a critical role in global warming: they store carbon. When forests are burned or cut down, their stored carbon is release into the atmosphere - deforestation now accounts for about 20% of carbon dioxide emissions each year.

 The original post:
http://www.theglobalwarming.in/stopglobalwarming.htm

What is Global Warming?

Global warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. According to the 2007 Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 20th century. Most of the observed temperature increase since the middle of the 20th century was caused by increasing concentrations of greenhouse gases, which results from human activity such as the burning of fossil fuel and deforestation. Global dimming, a result of increasing concentrations of atmospheric aerosols that block sunlight from reaching the surface, has partially countered the effects of greenhouse gas induced warming.

Climate model projections summarized in the latest IPCC report indicate that the global surface temperature is likely to rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the 21st century. The uncertainty in this estimate arises from the use of models with differing sensitivity to greenhouse gas concentrations and the use of differing estimates of future greenhouse gas emissions. An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts.Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects include changes in the frequency and intensity of extreme weather events, species extinctions, and changes in agricultural yields. Warming and related changes will vary from region to region around the globe, though the nature of these regional variations is uncertain.

The scientific consensus is that anthropogenic global warming is occurring.Nevertheless, political and public debate continues. The Kyoto Protocol is aimed at stabilizing greenhouse gas concentration to prevent a "dangerous anthropogenic interference". As of November 2009, 187 states have signed and ratified the protocol.