Bangkok, A spokesman for the Bangkok Metropolitan Administration revealed the reason for the PM2.5 dust values ??in the Bangkok area. Higher than the standard in the red level. until affecting the health of the people of Bangkok Mr. Ekwaranyu Amrapal, spokesman for Bangkok Metropolitan Administration Revealing the reason why PM2.5 dust values ??in Bangkok have increased to exceed the standard levels of orange and red. Affecting health and the respiratory system that one of the main factors that cause dust levels in Bangkok to increase is dust from outside Bangkok. and from outside the country According to the report, this was caused by burning, with 84% of the days exceeding 37.5 micrograms per cubic meter, corresponding to the days when burning in Cambodia was found to exceed 1,000 points and 100% of the days exceeding 50 micrograms per cubic meter. . Corresponds to the day when more than 1,000 burning sites were found in Cambodia. From the data, it was found that in 2023, 25,856 burning points were detec ted in neighboring countries, and in 2024 the number increased to 49,983, an increase of up to 93%. In the country, burning points were found in the central and eastern regions. In 2023, burning points were found. The number was 5,981 points and in 2024 it decreased to 3,252 points, a decrease of 46%. In the Bangkok area in 2023, only 6 burning points were found, while in 2024, 1 burning point was found, a decrease of 83%. In addition, it was found that there was a relationship between dust values ??from ground level detectors. of the air quality monitoring station at Chatuchak Compared to the 110 meter high pole detector at Kasetsart University. When the dust value of the ground level detector is higher than 50 micrograms per cubic meter, there is a 71% chance that the dust value of the 110 m detector will be significantly higher (more than 10 micrograms per cubic meter). m) and when the dust value of the ground level detector is lower than 37.5 micrograms per cubic meter, there is an 80% chance that 1. The dust value of the 110 m. level detector will be lower or 2. The value The dust level of the 110 m level detector will be significantly higher. (at a rate less than 5 micrograms per cubic meter) However, a hot spot is a point where satellites detect unusually high heat values ??from the heat on the earth's surface. Most of which is heat from the fire. Displayed in map form to present the approximate location of fires in each area. The acquisition of hot spot data relies on the principle that Satellites can measure infrared radiation waves. or heat radiation generated by fire (temperatures above 800 degrees Celsius) on the earth's surface, which are then processed and displayed in dot form. This is thanks to information from the Meteorological Department, GISTDA and Kasetsart University. Source: Thai News Agency
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