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Summer nights getting hotter

Summer nights getting hotter 10 July 2018

Higher nighttime temperatures as the climate changes can leave homes and humans little chance to cool off. It’s affecting agriculture and wildfire activity, too (via InsideClimate News)

By Georgina Gustin

Well after dinner time in Southern California on Friday, the thermometers read 100 degrees. In Santa Barbara County, fires lit up the skies and destroyed homes.

At breakfast time on Saturday in San Bernardino County, the temperature was “ridiculously above 100 degrees,” as the National Weather Service put it. People fled blazes there, too.

Not only is it unusually hot all over the world, to a remarkable degree, the heat lingers overnight. With a changing climate, overnight low temperatures are going up even faster than daytime highs. The diurnal anomaly, as scientists call it, is posing big risks to public health, safety, ecosystems and agriculture.

Just last month, a city in Oman went well over 24 hours without the temperature ever dropping below 108 degrees. That was the highest daily minimum temperature ever recorded anywhere on the planet—a new milestone of global warming.

People often talk about record high temperatures for a given day of the year as the most immediate evidence that climate change has arrived. Heat waves, when records fall for several days in a row across broad regions, are another. And in the past week or two, that’s been the focus of news reports. Temperature records were across the United States and all over the world. Other extreme events punctuated the narrative, such as the extreme flooding in Japan, where the death toll surpassed 100.

But it’s also important to consider the problem of higher temperatures during the coolest part of the day.

Read more via InsideClimate News…