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Earth already committed to 2.4-dgree C rise from climate change

Air pollution masking full impact of global warming

Source:  Copyright 2008, Mongabay
Date:  September 15, 2008
Original URL: Status ONLINE


As of 2005 the Earth was already committed to rise of global mean temperatures by 2.4°C (4.3°F), concludes a new study published in the journal Proceedings of the National Academy of Sciences (PNAS). The conclusion is significant because the Intergovernmental Panel on Climate Change (IPCC) has warned that a rise in global temperature by 1 to 3°C will lead to catastrophic consequences, including “widespread loss of biodiversity, widespread deglaciation of the Greenland Ice Sheet, and a major reduction of area and volume of Hindu-Kush-Himalaya-Tibetan glaciers, which provide the head-waters for most major river systems of Asia.” These glaciers, predicted to shrink considerably in the next few decades, provide food and water to over two billion people.

V. Ramanathan and Y. Feng of the Scripps Institution of Oceanography at the University of California at San Diego argue that due to unique conditions in the Arctic, mean global temperature must be doubled to accurately ...

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