- Jul 16, 2001
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In the August 10 edition of Science magazine..
"The year-to-year and decadal variability of the snowfall is so large that it makes it nearly impossible to distinguish trends that might be related to climate change from even a 50-year record," said Monaghan.
An improved method of measuring Antarctic snowfall has revealed that previous records showing an increase in precipitation are not accurate, even over a half-century. In the August 10 edition of Science magazine, researchers explain that their analysis of ice cores and snow pits revealed that precipitation levels in the Antarctic have in fact remained steady. The upshot of the study is that models assessing climate-change may need to be revised, as they can no longer be deemed accurate.
The multinational Antarctic team comprised 16 researchers who wanted to amass snowfall data going back 50 years to the International Geophysical Year (IGY). The data taken from the IGY is regarded as the first real study of the Antarctic, which has been ongoing ever since. This time around, however, the team found that their data contradicted computer models used to calculate global climate change, where most predict an increase in precipitation as atmospheric temperatures increase. "There were no statistically significant trends in snowfall accumulation over the past five decades, including recent years for which global mean temperatures have been warmest," said lead author Andrew Monaghan, a research associate with Ohio State University's Byrd Polar Research Center.
In the August 10 edition of Science magazine..
"The year-to-year and decadal variability of the snowfall is so large that it makes it nearly impossible to distinguish trends that might be related to climate change from even a 50-year record," said Monaghan.
An improved method of measuring Antarctic snowfall has revealed that previous records showing an increase in precipitation are not accurate, even over a half-century. In the August 10 edition of Science magazine, researchers explain that their analysis of ice cores and snow pits revealed that precipitation levels in the Antarctic have in fact remained steady. The upshot of the study is that models assessing climate-change may need to be revised, as they can no longer be deemed accurate.
The multinational Antarctic team comprised 16 researchers who wanted to amass snowfall data going back 50 years to the International Geophysical Year (IGY). The data taken from the IGY is regarded as the first real study of the Antarctic, which has been ongoing ever since. This time around, however, the team found that their data contradicted computer models used to calculate global climate change, where most predict an increase in precipitation as atmospheric temperatures increase. "There were no statistically significant trends in snowfall accumulation over the past five decades, including recent years for which global mean temperatures have been warmest," said lead author Andrew Monaghan, a research associate with Ohio State University's Byrd Polar Research Center.
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