man-made the global warming July got hotter for four in five people on Earth, with more than two billion people feeling the warmth caused by climate change every day, according to a lightning study.
More than 6.5 billion people, or 81% of the world’s population, sweated for at least one day when climate change had a significant impact on average daily temperatures, according to a new report released Wednesday climate control center, a scientific non-profit organization that found a way to calculate How much has climate change affected daily weather?.
“We’re really seeing climate change pretty much everywhere,” said Andrew Pershing, vice president for science at Climate Central.
Researchers surveyed 4,711 cities and found climate change fingerprints in 4,019 of them in July, a finding shared by other scientists It is said to be the hottest month on record. The new study found that burning coal, oil and natural gas three times increased the likelihood of these cities getting hotter for at least one day. In the US, where the climate effect was greatest in Florida, more than 244 million people experienced greater heat in July due to climate change.
For 2 billion people in a mostly tropical belt around the world, climate change has three times increased the likelihood of it getting hotter on any single day in July. These include the megacities of Mecca in Saudi Arabia and San Pedro Sula in Honduras.
According to the report, the day with the greatest climate change impact was July 10, when 3.5 billion people experienced extreme heat that showed signs of global warming. This is different than the hottest day in the world, July 7th University of Maine Climate Reanalyzer.
The study is not subject to peer review, the gold standard of science, as the month just ended. It is based on peer-reviewed climate fingerprinting methods used and considered by other groups technically valid by the National Academy of Sciences. Two outside climate researchers told the Associated Press that they believed the study was credible.
More than a year ago, Climate Central developed a measurement tool called the Climate Shift Index. It calculates in real time the potential impact of climate change on temperatures around the world, based on European and US forecasts, observations and computer simulations. To find out if there is an effect, the scientists compare the recorded temperatures to a simulated world without climate change warming, which is about 2 degrees (1.2 degrees Celsius) cooler, to find out the likelihood that the heat is more natural nature was.
“By now we should all be used to the association of isolated heat waves with global warming,” said Princeton University climatologist Gabriel Vecchi, who was not involved in the study. “Unfortunately, as this study elegantly demonstrates, this month gave the vast majority of people on this planet a taste of the effects of global warming on extreme heat.”
Across the United States, 22 US cities had at least 20 days when climate change tripled the likelihood of additional heat, including Miami, Houston, Phoenix, Tampa, Las Vegas and Austin.
The US city hardest hit by climate change in July was Cape Coral, Florida, where fossil fuels have increased the likelihood of higher monthly temperatures by 4.6 times and clear signs of climate change on 29 out of 31 days were recorded.
The further north the USA, the smaller the climate effect in July. In places like North Dakota and South Dakota, Wyoming, northern California, upstate New York, and parts of Ohio, Michigan, Minnesota, and Wisconsin, researchers found no significant effects.
Heatwaves in the US Southwest, the Mediterranean, and even China have been specifically analyzed World Weather Attribution finds a signal for climate change, but places like the Caribbean and the Middle East have big climate change signals and don’t get the attention, Pershing said. In contrast to the other study, the entire globe was considered in this study.
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