Change in global precipitation patterns as a result of climate change
Variation in temperature differences between tropics and polar regions plays a fundamental role in controlling atmospheric circulation and in consequence is a potential future cause of regional climate change
he Earth's climate system is largely determined by the differences in temperature between the tropics and the poles. Global warming is likely to cause global atmospheric circulation to change and progressively revert to a situation similar to that of 5,000 to 10,000 years ago. This is the conclusion of a study undertaken by a research team led by Dr. Michael Deininger, the results of which have been published in Nature Communications.
At the Institute of Geosciences at Johannes Gutenberg University Mainz (JGU), Deininger investigated how regional climate systems have changed since the beginning of the current interglacial period some 10,000 years ago and what conclusions can be drawn from this. To do this, the paleoclimatologist looked at data for rainfall time series recorded in various climate archives. "We were able to accurately reconstruct summer precipitation in the monsoon regions in Africa and South America, compare this data with changes in precipitation in the northern mid-latitudes, and relate this to changes in temperature," Deininger explained. The study also involved scientists from Australia, Brazil, Mexico, Ireland, Austria, and South Africa.
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