© Wolfgang Hasselmann/Unsplash
For several years now, periods of very high heat have intensified in many regions of the globe. The Intergovernmental Panel on Climate Change (IPCC) estimates in particular that with an increase in the global temperature of the globe of 1.5°C between now and end of the century, these episodes of very high heat will be multiplied by four.
Brazil, eastern China and certain American states soon hostile to human survival?
Today, a recent study carried out by NASA made it possible to analyze the evolution of the wet bulb, or (among other things) the ability of the human body to cool itself, thanks to sweating during a hot and humid weather. Obviously, at a certain temperature, the risk of death becomes palpable for human beings, so much so that certain regions of the globe could become fatal in the coming years.
According to scientists, resisting a web bulb index of 35° for six hours is particularly taxing on the human body. Some regions already exceed this fateful threshold, but the vast majority of so-called 'hot' regions; currently oscillate between 25 and 27°. However, this same web bulb index is on the rise…
© Presse-citron.net
Thus, still according to data analyzed by NASA, certain regions such as southern Asia, the countries bordering the Red Sea, eastern China or even part of Brazil should, from 2050 , display a wet bulb index greater than 35°… is beyond what the human body can support.
Already last November, a report signed The Lancet (and established by more than 110 scientists) indicated that the number of heat-related deaths should be multiplied by 5 by 2050. In France, between 5,000 and 10,000 people could die every year. years because of the heat.
© Tameteo
In the more distant future (NASA mentions the horizon 2070), certain American states could be affected, such as Arkansas, Iowa and even Missouri. According to Futura-Sciences, the wet bulb shows a health hazard effect as soon as it reaches 25°, i.e. 12° lower than our body temperature.
“Human activities are estimated to have caused global warming of about 1°C above pre-industrial levels, with a likely range of 0.8°C to 1°C .2°C. Global warming is likely to reach 1.5°C between 2030 and 2052 if it continues to increase at the current rate” can we read in the IPCC report.
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