iili i NEWS AND NOTES STUD Y SHOW S PRONOUNCED NE W BEGINNING OF above the antarctic surface (the WARMIN G ABOVE ANTARCTICA middle troposphere); farther up, "NATURA L SPRING" REPORTED Over the last 150 years, scientific Data obtained from weather bal- in the stratosphere, a cooling was loons reveal that the troposphere observed. These results are similar measurements show that events signifying the traditional begin- above Antarctica is growing to observed trends of atmospheric warmer by as much as 0.75°C per temperature around the globe. ning of spring have shifted. On decade—a rate more than three average, these events now happen Scientists on the project are times greater than that in the rest uncertain whether the antarctic about a week earlier in the north- of the world. The results of the eastern United States, according warming is anthropogenic or nat- British Antarctic Survey (BAS) ural, and a comparison of the BAS to a new report, "Evidence of Early study provide new insight to the Spring," from the group Clean results with 20 climate simulations extent that climate change is af- taken over the last century fail to Air-Coo l Planet (CA-CP). The fecting the atmosphere above the group
Bulletin of the American Meteorological Society – American Meteorological Society
Published: Jun 1, 2006
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