Why do we feel the weather is hotter now?

Although we are all aware that the earth’s temperature is rising over time, this is not the only reason why we experience heat. Why do we feel the weather is hotter now?

Heatwaves feel 10 degrees Celsius hotter than they actually are because of changes in meteorological conditions and human behavior.

weather is hotter
Reuters

This was discovered in a new study.

The US National Weather Service (NWS) measures temperature using the heat index.

The heat index measures how our bodies react to various environmental factors.

However, the present climate shift has forgotten about this outdated system.

The 1979 heat index scale was used in the study to explore how variations in temperature and humidity in the atmosphere impact blood circulation.

According to research, the human body interprets a temperature of 20 degrees Celsius as 20 degrees when the average atmospheric humidity is 70 percent.

The body uses perspiration vapour to stay cool when the temperature is high, but when the humidity is high, the body feels hotter than the actual temperature.

When the humidity is high, for instance, a temperature of 30 degrees Celsius feels like 34.5 degrees Celsius.

The humidity has caused problems for the UK during recent heatwaves, but other from that, global standards for summertime temperatures have been pretty close.

Our body finds it harder to cool itself by perspiring the more humidity there is in the air.

If you didn’t already know, humidity rises on average by 7% for every degree centigrade that the temperature rises.

The research, which was published in the journal Environmental Research Letters, used a model to discover that a humidity of 100% prevented perspiration on the skin’s surface.

According to the researchers, when it’s hotter outside, the body is working harder and blood flow under the skin increases, putting greater strain on the body’s systems and raising body temperature.

When this model was applied to 100 heat waves that occurred between 1984 and 2020, it was discovered that the Midwest states experience hotter weather on average than the southern states do.

These situations have higher humidity, which raises body warmth and causes a 170% increase in blood flow to the skin.

According to the researchers, “we now have a model that depicts the impacts of temperature and humidity on the human body, suggesting that we may see some fairly severe scenarios in the future.”