Earth香蕉视频直播檚 average temperature set a new unofficial record high last Thursday, the third such milestone in a week that already rated as the and what one prominent scientist says could be the hottest in 120,000 years.
But it香蕉视频直播檚 also a record with some legitimate scientific questions and caveats, so much so that the National Oceanic and Atmospheric Administration has distanced itself from it. It香蕉视频直播檚 grabbed global attention, even as the number 香蕉视频直播 63 degrees Fahrenheit (17.23 degrees Celsius) 香蕉视频直播 doesn香蕉视频直播檛 look that hot because it averages temperatures from around the globe.
Still, scientists say the daily drumbeat of records 香蕉视频直播 official or not 香蕉视频直播 is a symptom of a larger problem where the precise digits aren香蕉视频直播檛 as important as what香蕉视频直播檚 causing them.
香蕉视频直播淩ecords grab attention, but we need to make sure to connect them with the things that actually matter,香蕉视频直播 climate scientist Friederike Otto of the Imperial College of London said in an email. 香蕉视频直播淪o I don香蕉视频直播檛 think it香蕉视频直播檚 crucial how 香蕉视频直播榦fficial香蕉视频直播 the numbers are, what matters is that they are huge and dangerous and wouldn香蕉视频直播檛 have happened without .香蕉视频直播
Thursday香蕉视频直播檚 planetary average surpassed the 62.9-degree mark (17.18-degree mark) set Tuesday and equaled Wednesday, according to data from the University of Maine香蕉视频直播檚 , a tool that uses satellite data and computer simulations to measure the world香蕉视频直播檚 condition. Until Monday, no day had passed the 17-degree Celsius mark (62.6 degrees Fahrenheit) in the tool香蕉视频直播檚 44 years of records.
Now, the entire week that ended Thursday averaged that much.
Johan Rockstrom, director of the Potsdam Institute for Climate Impact Research in Germany, called the 63-degree mark 香蕉视频直播渁n exceptional outlier香蕉视频直播 that is nearly 6 degrees warmer than the average of the last 12,000 years. Rockstrom said it will 香蕉视频直播渨ith high likelihood translate to even more severe extremes in the form of floods, droughts, heat waves and storms.香蕉视频直播
香蕉视频直播淚t is certainly plausible that the past couple days and past week were the warmest days globally in 120,000 years,香蕉视频直播 University of Pennsylvania climate scientist Michael Mann said. He cited that says Earth is the warmest since the last age ended, and said Earth likely hasn香蕉视频直播檛 been as warm dating all the way to the ice age before that some 120,000 years ago.
Climate scientist Zeke Hausfather of the tech company Stripe and Berkeley Earth temperature monitoring group said he wouldn香蕉视频直播檛 be surprised if it is the warmest in 120,000 years. But he said long-term proxy measurements like tree rings aren香蕉视频直播檛 precise.
This week香蕉视频直播檚 average includes places that are sweltering under dangerous heat 香蕉视频直播 , which checked in almost 110 degrees Fahrenheit (43.3 degrees Celsius) 香蕉视频直播 and the merely unusually warm, like Antarctica, where temperatures across much of the continent were as much as 8 degrees Fahrenheit (4.5 degrees Celsius) above normal this week.
Temperatures were so brutally hot Thursday in Adrar, Algeria, that the temperature never got below ) even at night when it is supposed to cool. That was the hottest ever nighttime low for Africa, according to weather historian and climatologist Maximiliano Herrera.
The temperature is ramping up across Europe this week, too. Germany香蕉视频直播檚 weather agency, DWD, has predicted on Sunday and the Health Ministry has issued a warning to vulnerable people.
While there are small spots of cooler-than-normal temperatures across the globe, the University of Maine measurement is an average. That means some places 香蕉视频直播 including both polar regions 香蕉视频直播 will be extraordinarily warmer than normal and others will be cooler. On average it香蕉视频直播檚 about 1.8 degrees Fahrenheit (1 degree Celsius) warmer than the 1979-2000 average, which is warmer than the 20th and 19th century averages.
And 70% of the world is covered by oceans, which have been
Scientists say the heat is driven by two factors: Long-term warming from greenhouse gas emissions from the burning of fossil fuels and a of part of the Pacific that changes weather globally and makes an already warming world a bit hotter.
The National Oceanic and Atmospheric Administration on Thursday issued a note of caution about the Maine tool香蕉视频直播檚 findings, saying it could not confirm data that results in part from computer modeling, saying it wasn香蕉视频直播檛 a good substitute for observations.
Scientists don香蕉视频直播檛 understand and haven香蕉视频直播檛 delved much into daily fluctuations, said Princeton University climate scientist Gabriel Vecchi. Much more meaningful to them are global data over months, years and especially decades.
香蕉视频直播淭he fact that we haven香蕉视频直播檛 had a year colder than the 20th century average is much more relevant,香蕉视频直播 Vecchi said.
Kathleen Hall Jamieson, director of the Annenberg Public Policy Center at the University of Pennsylvania, said immediacy of daily records is important.
香蕉视频直播淭ell me that yesterday was the hottest day on record and I can relate the claim to ways in which yesterday香蕉视频直播檚 heat constrained my behavior,香蕉视频直播 she said. 香蕉视频直播淚 can香蕉视频直播檛 do the same with monthly or yearly data. 香蕉视频直播 We experience the world hour-by-hour, day-by-day, not in monthly or yearly averages.香蕉视频直播
Discussions about how official the records are aren香蕉视频直播檛 as important as the public getting the message 香蕉视频直播渢hat Earth is warming and humans are responsible,香蕉视频直播 said Max Boykoff, a University of Colorado environmental studies professor who tracks media coverage of climate change.
香蕉视频直播淭he issue of climate change doesn香蕉视频直播檛 often get its 15 minutes of fame. When it does, it香蕉视频直播檚 usually tied to something abstract like a scientific report or a meeting of politicians that most people can香蕉视频直播檛 relate to,香蕉视频直播 said George Mason University climate communications professor Ed Maibach.
香蕉视频直播淔eeling the heat 香蕉视频直播 and breathing the wildfire smoke, as so many of us in the Eastern U.S. and Canada have been doing for the past month 香蕉视频直播 is a tangible shared public experience that can be used to focus the public conversation,香蕉视频直播 he said.
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