Climate Research

A new study published this week in the Proceedings of the National Academy of Sciences advances the understanding of the link between weather extremes and global warming.

Scientists from the Potsdam Institute for Climate Impact Research say man-made climate change may slow down or stall wave-like weather flows in the Northern Hemisphere, leading to devastating extreme events like the U.S. drought of 2011 and the 2003 heatwave in Europe.

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Tweetable Fact

The number of frigid days in Los Angeles has dropped 4 days on avg since 1970

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As this meteorological winter comes to an end, we’re taking a look back to see how winters have been changing overall in Los Angeles. Some years have been unusually cold, others unusually warm, but the number of frigid days has been on a downward trend since 1970. On average, as the chart above shows, that number has dropped from 20 to 16 over 42 years.

This trend is happening all over the country, but in Los Angeles, unlike in some places, the chart below shows that the decline has been going on for more than 100 years — a decline that is consistent with the gradually rising temperatures caused by climate change.

Click here for an interactive version of the graphic below.

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