Russia and Canada Heat Up Faster Than the Arctic [Slide Show]
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Sporadic in 1950: Warming around Earth (orange and red) has picked up in many spots compared with 1901 but is unevenly distributed, with some areas cooling (blue). (Temperature units are in kelvins.) Zhaohua Wu/Florida State University
Semiarid Focus in 1960: As in 1950, warming still seems to concentrate in semiarid regions of the world. Zhaohua Wu/Florida State University
North More Than South in 1970: By now, it becomes clear that warming is predominately in the Northern Hemisphere. Zhaohua Wu/Florida State University
Cooling Disappears in 1980: The blue regions, which show cooling, are waning. Zhaohua Wu/Florida State University
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Rise Quickens in 1990: Hotter regions (orange and red) blanket most of the Northern Hemisphere. Zhaohua Wu/Florida State University
Red Hot in 2000: Large temperature increases bubble up across the Northern Hemisphere, and grow more intense in the Southern Hemisphere as well, although less widespread. Zhaohua Wu/Florida State University
Upper Latitudes Outrun the Arctic in 2009: Although the Arctic is certainly warming significantly in 2009, the most recent year of data, northern midlatitudes—central Canada, northern Europe and southern Russia—heat up even faster... Zhaohua Wu/Florida State University
We’ve heard for awhile that the Arctic is heating faster than any other place on the planet. That’s true—except for a band around the Northern Hemisphere that follows an approximate line across central Canada and southern Russia. The same new data also show that a few locations around the world are actually cooler than they were 60 years ago.
Those insights come from a study by Zhaohua Wu, an assistant professor of meteorology at Florida State University, published in Nature Climate Change. Wu and a team of fellow meteorologists analyzed worldwide temperature data in unprecedented detail, comparing the readings every decade since 1950 against levels in 1901. The outcome is a series of fine-grained maps that show the decade-to-decade temperature rise. The maps can be seen and compared in our slide show. (Scientific American is part of Nature Publishing Group)
Mark Fischetti is a senior editor at Scientific American. He covers all aspects of sustainability. Follow him on Twitter @markfischetti Credit: Nick Higgins