Global Warming

 Sources of Carbon Dioxide

Global emissions of carbon dioxide were at a record high in 2011 and are likely to take a similar jump in 2012.Over all, global emissions jumped 3 percent in 2011 and are expected to jump 2.6 percent in 2012.

The level of carbon dioxide, the most important heat-trapping gas in the atmosphere, has increased about 41 percent since the beginning of the Industrial Revolution, and scientists fear it could double or triple before emissions are brought under control. The temperature of the planet has already increased about 1.5 degrees Fahrenheit since 1850.
 
Coal, the dirtiest and most carbon-intensive fossil fuel, is growing fastest, with coal-related emissions leaping more than 5 percent in 2011, compared with the previous year.

Emissions continue to grow so rapidly that an international goal of limiting the ultimate warming of the planet to 3.6 degrees Fahrenheit, established three years ago, is on the verge of becoming unattainable, said researchers affiliated with the Global Carbon Project.

Josep G Canadell,a scientist in Australia who leads that tracking program, said Sunday in a statement that salvaging the goal, if it can be done at all, “requires an immediate, large and sustained global mitigation effort.”

Yet nations around the world, despite a formal treaty pledging to limit warming — and 20 years of negotiations aimed at putting it into effect — have shown little appetite for the kinds of controls required to accomplish those stated aims.