Climate Decade in Review - Post 28: Highest Winter Temperature Ever in Buenos Aires

August 31, 2009 – Buenos Aires records the hottest winter temperature ever: 94 degrees Fahrenheit.

The Southern Hemisphere experiences winter during the months of June, July and August--opposite of the Northern Hemisphere. So August in Buenos Aires is their winter. Buenos Aires has a mild climate and does not experience either extremely low nor high temperatures. The average high temperature in August is 63 degrees F.

One of the indicators that global warming is caused by higher concentrations of greenhouse gases rather than natural changes, such as greater solar radiance, is that nighttime and winter temperatures will rise more than summer and daytime temperatures. So the fact that Buenos Aires experienced its highest winter temperature in recorded history is consistent with what would be expected in a world with higher greenhouse gas concentrations.

This is one in the series of "Decade in Review" posts on this blog that began in January 2010. These posts present climate-change-related events that occurred during the 00's, the warmest decade in recorded history.

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