In the past 60 years, California has experienced two heatwaves – in 1955 and 2006 – in which temperatures in its urban centers were greater than 37.8 degrees C (100 degrees F) for three or more consecutive days.

A new analysis prepared by other Scripps researchers indicates that by century’s end, those kinds of heatwaves will be the norm. Scripps climate researcher David Pierce said the new data will be assimilated into a major climate report scheduled for release in 2013.

“We’ll start getting these kinds of heatwaves more frequently by 2020 and by 2070, they’ll become common,” Pierce said.

…in all scenarios, not only do episodes of 100-degree-plus temperatures happen more frequently (several times a decade), but events in which temperatures top 100 for seven or more days begin happening at least once a decade by 2060 in all the models.

via Scripps Institute of Oceanography

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