|Title||Continual Ozone Warning Issued due to recent Heat Wave|
|Date||2018-08-07 PM 5:52:40||Hit||16|
Ulsan Institute of Health & Environment calls for restriction on going outdoors or doing outdoor activities during the day.
Institute of Health & Environment (hereinafter the institute) is requesting restrictions to be placed on going outdoors and doing outdoor activities during the daytime when the sun¡¯s rays are strongest, due to the frequently issued ozone warnings because of the high temperatures and intense sun rays.
The issuance of ozone advisories is determined by the hourly average ozone concentration of individual areas, and the stages are as follows: watch (0.12 ppm or more), warning (0.3ppm or more), critical warning (0.5ppm or more).
As of July 18 this year, there have been 23 issuances of ozone advisories in the Ulsan area, and the Korea Meteorological Administration predicts that number will only rise due to the forecasted continuing heat wave.
Ozone is a very active molecule made up of three oxygen atoms, and although the ozone in the stratosphere plays an important role in blocking harmful UV rays, ozone closer to the earth is harmful to the human body, and may cause chronic respiratory diseases, pneumonia, or lower one¡¯s bodily immunity.
Additionally, ozone reacts photochemically to the nitrogen oxide and volatile organic compounds in car emissions, producing secondary substances that are gasses invisible to the eye. As such, it is best to avoid going outside as much as possible during high ozone concentrations.
Restrict outdoor activities and exercises as much as possible during the clear, extremely hot summer days especially from 2pm to 6pm, as this is when the ozone concentration is at its highest. It is also recommended to reduce driving time or take public transportation. Children, the elderly and weak, and people suffering from respiratory complications should take extra caution.
Citizen participation is also needed to reduce the emission of ozone producing agents, by reducing individual driving and gas usage, and refraining from using sprays, thinners, or paints.
Meanwhile, the Ulsan Institute of Health & Environment requests that citizens sign up for the text service that provides the most fast and accurate ozone warning information (institute site http://www.ulsan.go.kr/uihe/index).
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