Spring heat wave across the USA

By Claire

A heat wave in the United States over the last month has tied, or broken over 7000 high temperature records!

Not only are day-time high temperature records being broken, but in some cases, night-time high temperature records are breaking day-time records. This is of particular concern to health officials, since “the coolest parts of the day are getting warmer, making it harder for people — especially those without air conditioning — to recover from daytime heat exposure.” (more info here)

Underpinning this heat wave is a long-term warming trend that is leading to the early arrival of Spring across the US.

“The date of first leafing — the day when buds burst open — has moved forward from March 20, where it was during the 30-year period from 1951 to 1980, to March 17, where it has been for the period from 1981 to 2010.”

While no single event can be attributed definitively to climate change, the long-term increase in average temperatures which underpins individual weather events is likely responsible for the extreme temperatures seen during this latest heat wave.

Read the full story here.