Tuesday 11 June 2019
Books – Mohamed Abdel Nasser:
Dr. Mahmoud Shaheen, director of the Meteorological Authority's Meteorological Authority, addressed several tips to citizens to address the phenomenon of air that causes a feeling of extreme heat, relative humidity.
"The temperature so far has not changed compared to last year," Shahin told Masrawy. "But the main reason why people feel more warmed up in a few days when temperatures are not high is mainly due to relative humidity.
He added that to meet the high humidity in the atmosphere, it is necessary to sit in places with draft, and not be inside, and whenever the room is exposed, feel less hot.
"You have to wear light cotton clothing, which helps reduce the feeling of heat and moisture," Shaheen said.
As for the concept of humidity, the director of the Meteorological Forecast Center confirmed that the amount of water vapor in the air, expressed as a percentage, the higher the temperature, the greater the amount of water vapor that air can carry. A significant increase in the amount of water vapor in the air increases the sensation of heat.
He pointed out that humidity is also determined by the temperature and pressure of the air, the warmer the air, the greater the amount of water vapor it carries and when the air contains the maximum amount of water vapor can be transported under a certain temperature and pressure.
He continued: "Humidity varies during the present day between 80-85% in Cairo, while it reaches 95% in other provinces."