Rainmaking flights reduce air pollution in Bangkok
The air quality index (AQI) in Bangkok, neighbouring provinces, and certain northern regions has shown improvement following the initial efforts of rainmaking flights conducted by the Department of Royal Rainmaking and Agricultural Aviation (DRRAA). The initiative aimed to address the high levels of PM2.5 fine particulate matter affecting the region.
Deputy Minister of Agriculture and Cooperatives, Itthi Sirilathayakorn, announced that these operations were specifically targeted at reducing pollution levels in Bangkok and its surrounding areas, as well as in northern provinces. The Royal Rainmaking Operation Units stationed in Hua Hin district of Prachuap Khiri Khan and Kanchanaburi province commenced their activities on Monday afternoon, December 2.
Utilising two Casa aircraft, the teams applied a method designed to alter the atmospheric temperature by distributing cooled water. Each aircraft released 1,600 litres of water in a spiralling pattern, covering a radius of 5 to 7 miles (8 to 11 kilometres) over the provinces of Phetchaburi and Samut Sakhon.
Following these operations, a noticeable improvement in Bangkok’s AQI was recorded. The index, which began at an unhealthy 154 micrograms per cubic metre (µg/m³) in the morning, had decreased to a moderate level of 66 µg/m³ by the end of the day.
Meanwhile, in the northern region, the Royal Rainmaking Operations Unit in Chiang Mai also embarked on their mission around 5pm on December 2. The operation resulted in a slight enhancement of air quality, with the AQI reducing from 84 µg/m³ to 83 µg/m³.
Rachen Silaraya, who serves as the deputy director-general of operations at DRRAA, described these efforts as a proactive approach to combat air pollution. He emphasised the department’s commitment to developing innovative technologies and methods to manage air quality more effectively.
The Geo-Informatics and Space Technology Development Agency (GISTDA) tracked PM2.5 levels using satellite data through the Check Dust app. Their findings indicated that, despite some improvements, air quality in Bangkok remained above safe standards, with PM2.5 levels surpassing 100 µg/m³ in all areas.
The most alarming AQI measurement was observed in Laksi district, reaching 156.4 µg/m³. Across the nation, 11 provinces reported PM2.5 levels in the red zone, posing significant health risks, reported Bangkok Post.
Among the hardest-hit areas were Nonthaburi, with an AQI of 129.4 µg/m³, followed by Bangkok at 127.7 µg/m³, Pathum Thani at 118.9 µg/m³, Samut Prakan at 108.7 µg/m³, and Nakhon Pathom at 100.2 µg/m³.
Frequently Asked Questions
Here are some common questions asked about this news.
Why was rainmaking chosen as a solution for air pollution in Thailand?
Rainmaking can quickly reduce air pollution by precipitating particulate matter, offering immediate relief in areas with high PM2.5 levels.
How does altering atmospheric temperature with rainmaking flights improve air quality?
By cooling the atmosphere, rainmaking encourages rainfall, which helps to wash away pollutants and reduce PM2.5 concentrations.
What if rainmaking fails to sustain improved air quality in Thailand?
Alternative long-term strategies, such as stricter emissions regulations and green technology adoption, may be necessary for sustainable air quality management.
How does satellite data contribute to monitoring Thailand’s air quality?
Satellite data provides real-time insights on PM2.5 levels, helping officials track pollution trends and plan mitigation efforts effectively.
What are the potential health impacts of consistently high PM2.5 levels in Thailand?
Chronic exposure to high PM2.5 can lead to respiratory and cardiovascular diseases, highlighting the need for effective pollution control measures.
