The skinny on wet bulb temperatures

Categories: Big picture
Published on: August 2, 2015

Robert Scribbler / 31 July 2015

CLRfuowWIAAiuVThirty five degrees Celsius. According to recent research, it’s the wet bulb temperature at which the human body is rendered physically unable to cool itself in the shade. At which evaporation not longer cools the skin. A temperature that results in hyperthermia, heat exhaustion and heat stroke — even when sitting still and out of direct sunlight over the course of about 1-3 hours. Basically, it’s the physical limits of human heat endurance.

The primary factors involved in determining wet bulb temperature are atmospheric temperature and humidity. The temperature of an air parcel cooled to saturation (100 percent humidity). Basically, it’s the coolest temperature human skin is able to achieve by sweating.

[ See also: Iraq’s scorching heat kills 52 children in refugee camps ]