Heat waves – signs of a wider problem

Several parts of the northern hemisphere are suffering from heat waves, but raised temperatures are a wider problem.

AccuWeather: Intense heat wave to build across western Europe as wildfires rage in Sweden

A hot July across much of western Europe will climb to another level this week as a heat wave builds from Spain to Scandinavia.

The Guardian: Why is Europe going through a heatwave?

Scientists say this ‘extreme’ weather in the northern hemisphere may soon be the norm

Partly, it’s just the luck of the weather. The jet stream – the west-to-east winds that play a big role in determining Europe’s weather – has been further north than usual for about two months. A stationary high-pressure weather system has left the UK and much of continental Europe sweltering. Iceland, by contrast, has been hit with clouds and storms that would normally come further south.

“The current hot and dry spell in the UK is partly due a combination of North Atlantic ocean temperatures, climate change and the weather,” said Len Shaffrey, a professor of climate science at the University of Reading.

The heatwaves in the northern hemisphere are undoubtedly linked to global warming, scientists say. “There’s no question human influence on climate is playing a huge role in this heatwave,” said Prof Myles Allen, a climate scientist at the University of Oxford.

RNZ: Japan declares heatwave a natural disaster

Japan’s weather agency has declared a heatwave sweeping the country a natural disaster, with at least 65 deaths recorded in the past week.

An agency spokesman warned that “unprecedented levels of heat” were being seen in some areas.

The heatwave shows no sign of abating, forecasters say.

An here in New Zealand we are experiencing another relatively mild winter with signs of an early spring already. This is a virtual repeat of the past few years (here in Dunedin at least).