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Mon Aug 26, 2019, 09:36 AM

Climate change has altered winter precipitation across Northern Hemisphere

New research distinguishes between natural variability and influence of greenhouse gases
National Center for Atmospheric Research,

A team of scientists has successfully teased out the influence of human-caused climate change on wintertime precipitation over the last century, showing that the warming climate altered wintertime rainfall and snowfall across the Northern Hemisphere.

..."I thought this was quite revealing," said NCAR senior scientist Clara Deser, a co-author of the study. "Our research demonstrates that human-caused climate change has clearly affected precipitation over the past 100 years." The results show that warming temperatures associated with societal emissions of greenhouse gases spurred a noticeable increase in wintertime precipitation across widespread regions of northern Eurasia and eastern North America since 1920.

...the study indicated that climate change may have had had a drying influence on parts of central and southwestern North America although not enough to offset natural variability and on much of southern Eurasia. However, the authors cautioned that the results for those regions were less pronounced and not statistically significant.
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