2024-03-21 04:09:00
BMA reveals 4 reasons why fine dust values soar in the middle of the night throughout the capital. Pointing out that the wind direction was different from other days. Burning occurred in many areas around the area. inclement weather There’s a summer storm. Humidity in the atmosphere causes PM 2.5.
BMA reveals 4 reasons why fine dust values soar in the middle of the night throughout the capital. Pointing out that the wind direction was different from other days. Burning occurred in many areas around the area. inclement weather There’s a summer storm. Humidity in the atmosphere causes PM 2.5.
On March 21, 2024, Mr.Pornprom Vikitseth Advisor to the Governor of Bangkok (Governor of Bangkok) and sustainability executives of Bangkok Give an answer to the cause of the value.PM2.5 dust which returned to skyrocket in Bangkok as follows
1. The wind direction on March 20, 2024 is east (as shown in the picture), which is different from other days during this period coming from the Gulf of Thailand. As for the burn sites in the past 24 hours, several locations were found in the surrounding area.
2. During this period the weather is unstable. There’s a summer storm. In addition, there was high pressure through the northeast yesterday. As a result, the height of the mixed atmosphere (Mixing Height) decreases and dust accumulates more.
3. Humidity in the atmosphere causes an increase in secondary PM2.5 dust particles, especially those made from nitrogen and ammonia compounds that will react well in conditions of high humidity.
4. Secondary dust form (Secondary PM2.5) is caused by certain gases floating in the air, such as nitrogen oxide gas. Sulfur dioxide gas Reacts to sunlight became dust floating in the air Usually occurs during February – March.
Mr. Phonphrom further said that sulfur dioxide (SO2) gas is generated from the combustion of fuels containing sulfur, such as burning coal or oil in power plants, metal smelters, and oil refineries. Nitrogen oxides (NOx) are mostly produced by burning fuel under high air pressure. This causes the combination of oxygen and nitrogen to form nitric oxide (NO), which is a harmless gas. But when it enters the atmosphere, NO is oxidized. It is nitrogen dioxide gas (NO2) which is yellowish-brown. It is a toxin that irritates the eyes. The main source of oxides of nitrogen Caused by burning fuel in cars. Burning coal or natural gas or industrial processes in fertilizer and explosives factories
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However, people should check air quality information before leaving home. You can check through the AirBKK application / website www.airbkk.com Facebook, Environment Department. Bangkok, Air Quality and Noise Management Division Environment Office, Bangkok or LINE ALERT
Mr. Pornprom also said that if the air quality is at the orange level. This means that it is starting to have an impact on your health. general public You should use personal protective equipment such as a PM2.5 mask every time you go outside the building. Limit the amount of time you spend in strenuous outdoor activities or exercise. And should observe unusual symptoms such as coughing, difficulty breathing, eye irritation. For people in at-risk groups You should use personal protective equipment such as a PM2.5 mask every time you go outside the building. Avoid doing outdoor activities or exercise that are very strenuous. Follow the doctor’s advice. If there are any abnormal symptoms, please see a doctor immediately.
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