熱浪有多危險 ?－未來新聞預測播報站。預言失敗率10%。

熱浪有多危險 ?

妙寄子 2022/8/2

熱浪會死人的理論依據。氣候暖化，最終對人類的滅絕危機。

所以，當熱浪來襲，家裡必須有溫度計和溼度計。當濕度超過60，就要啟動除濕機。啟動除濕機，下降濕度，是非常關鍵的保命動作。

或是，裝置有除濕效果的冷氣機。

文章節錄自: the economist..

When a deadly heatwave hits India’s northern plains, some 20m people are killed by persistent “wet-bulb” temperatures of more than 35°C (95°F). That is the plot of “The Ministry For the Future”, Kim Stanley Robinson’s novel about climate change. The scenario is fiction but similar temperatures have been briefly recorded in the real world. And as the globe warms they will become more common.
The wet-bulb temperature is that which would be recorded by a thermometer wrapped in a moist towel. Water evaporating from around the bulb has a cooling effect. The wetter the surrounding air, the less moisture is able to escape and the higher the wet-bulb reading will be. It will always be lower than the actual temperature, until the air is completely saturated with moisture vapour.

A wet-bulb temperature of 35°C is regarded as the theoretical limit of what humans can endure. It would be reached at an actual temperature of 45°C if relative humidity were 50%, or at about 39°C if humidity(濕度) were 75%. Beyond this point it becomes impossible for sweat to cool the body down, causing people to overheat and in effect cook. Cells swell, proteins are deformed and organ systems fail, resulting in death. At wet-bulb temperatures above 35°C, it is thought that even young healthy people wearing light clothing—regardless of whether they are parked in front of a fan, in the shade or have unlimited water to drink—will die in about six hours.(大約6小時死亡).

Such extremes of heat and humidity are not common. But in 2020 researchers from the California Institute of Technology, Columbia University and Loughborough University found that a handful of weather stations—in South Asia, the Persian Gulf and the southwest coast of North America—have occasionally recorded wet-bulb temperatures close to or above 35°C between 1979 and 2017, though only for a couple of hours at a time. They also concluded that these types of temperatures are probably reached more often, but not all instances are recorded.(自然界已經出現了。群體熱死---人類和牲畜都會一起死去)---已經是存在的危機)。
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