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5 December 2013 11:26 am ,
Vol. 342 ,
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
Since arriving on the island of Guam in the 1940s, the brown tree snake ( Boiga irregularis ) has extirpated native...
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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NASA: 2010 Meteorological Year Warmest Ever
10 December 2010 2:44 pm
The 2010 meteorological year, which ended on 30 November, was the warmest in NASA's 130-year record, data posted by the agency today shows. Over the oceans as well as on land, the average global temperature for the 12-month period that began last December was 14.65˚C. That's 0.65˚C warmer than the average global temperature between 1951 and 1980, a period scientists use as a basis for comparison.
The 2010 meteorological year was slightly warmer than the previous warmest year, the 2005 calendar year, when the average temperature was 14.53˚C.
In 2010, temperatures measured over land alone were also the warmest ever, with instruments showing a December-November average of 14.85˚C. Combining this warming with above-average ocean temperatures led to the global average of 14.65˚C.
November brought frigid temperatures to certain areas of Europe. But the data, compiled by the NASA Goddard Institute for Space Studies in New York City, show that, globally, last month was the warmest November ever recorded, nearly 0.96˚C warmer than the 1951 to 1980 average for the month.
According to NASA climatologist and Goddard director James Hansen, the main driver for the increased warmth was the Arctic, where temperatures in Hudson Bay were "10˚C above normal" for November. That month, Hansen says, "sea ice was absent while normally that [body of water] is covered by sea ice." Water devoid of ice absorbs much more solar radiation than water covered with ice, which reflects much of the radiation back toward space.
The record temperatures occurred despite a moderate occurrence of La Niña, a phenomenon over the Pacific Ocean that tends to lead to cooler temperatures at the surface, affecting the global mean.