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Data From Space, Oceans Validate Global Warming Timeline
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| Contributor | ArmyDem |
| Last Edited | ArmyDem Apr 29, 2005 12:03pm |
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| Category | News |
| Media | Newspaper - Washington Post |
| News Date | Friday, April 29, 2005 06:00:00 PM UTC0:0 |
| Description | Associated Press
Friday, April 29, 2005; Page A13
NEW YORK, April 28 -- Climate scientists armed with new data from the ocean depths and from space satellites have found that Earth is absorbing much more heat than it is giving off, which they say validates computer projections of global warming.
Lead scientist James E. Hansen, a prominent NASA climatologist, described the findings on the out-of-balance energy exchange as a "smoking gun" that should dispel doubts about forecasts of climate change.
Hansen's team, reporting Thursday in the journal Science, said they also determined that global temperatures will rise 1 degree Fahrenheit this century even if greenhouse gases are capped tomorrow.
If carbon dioxide and other heat-trapping emissions instead continue to grow, as expected, things could spin "out of our control," especially as ocean levels rise from melting Greenland and Antarctic ice sheets, the researchers said. International experts predict a 10-degree leap in such a worst-case scenario.
The NASA-led researchers were able to measure Earth's energy imbalance because of more precise ocean readings collected by 1,800 technology-packed floats deployed in seas worldwide beginning in 2000, in an international monitoring effort called Argo. Their measurements are supplemented by better satellite gauging of ocean levels, which rise both from meltwater and as the sea warms and expands. |
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