Bangkok, Director-General of the Royal Rainmaking Department. Revealing that the Royal Rainmaking Operations Unit is continuing to produce rain to reduce the accumulation of PM 2.5 dust. Recently, the situation in Bangkok and surrounding areas has improved, while in the northern region. To fly for rain-making operations covering both the upper and lower northern regions. According to the orders of Minister Thammanat Mr. Supit Phithaktham, Director-General of the Department of Royal Rainmaking and Agricultural Aviation, revealed that Captain Thammanat Phromphao, Minister of Agriculture and Cooperatives, ordered the Department of Royal Rainmaking and Agricultural Aviation to Royal Rainmaking Operation to alleviate the problem of small dust particles PM 2.5 in the affected areas. including the northern, central, eastern, and especially Bangkok and surrounding areas. Because it was found During the past week, the area in question had dust levels exceeding the standard. It is at a level that is beginning to aff ect people's health (orange) which is caused by biomass burning in the eastern region and neighboring countries. The hot spot was found to be quite high, along with areas in Bangkok and surrounding areas being influenced by easterly and southeast winds. As a result, dust from the burning of biomass will be carried away. Neighboring countries enter the eastern region and Bangkok and surrounding areas, including the central region of Thailand. The Department of Royal Rainmaking and Agricultural Aviation monitors the situation and weather conditions on a daily basis. by setting up the Royal Rainmaking Operations Unit From December 24, 2023 to alleviate the problem of small dust particles in Bangkok and surrounding areas, consisting of: 1. Royal Rainmaking Operations Unit, Rayong Province U-Tapao Airport, Ban Chang District, Rayong Province, uses 2 medium-sized CASA aircraft and 2 small CARAVAN aircraft to carry out rescue operations on the eastern side of Bangkok and surrounding areas. 2. Royal Rainmaking Op erations Unit, Hua Hin District Hua Hin Airport, Hua Hin District, Prachuap Khiri Khan Province Using 2 medium sized CASA aircraft to carry out rescue operations on the western side of Bangkok and surrounding areas. 3. Royal Rainmaking Operations Unit, Nakhon Sawan Province Nakhon Sawan Airport Mueang Nakhon Sawan District Nakhon Sawan Province using 2 small CARAVAN type aircraft to carry out assistance operations north of Bangkok and surrounding areas. All 3 units will be able to carry out royal rain operations covering the Bangkok area. and surrounding area thoroughly In the northern area The Royal Rainmaking Operations Unit in Chiang Mai Province has been established. Wing 41 Airport, Mueang District, Chiang Mai Province and the Royal Rainmaking Operations Unit, Phitsanulok Province Wing 46 Airport, Mueang District, Phitsanulok Province To carry out operations to alleviate dust problems in the upper and lower northern regions as well. For the Royal Rainmaking operation, the mission to alleviate small du st particles is divided into 3 techniques: 1. Royal Rainmaking Operations in the Disturbance Stage Using Royal Rainmaking Formula 1 (Sodium Chloride) to operate in the upwind area of ??Bangkok and surrounding areas to create clouds and increase the amount of clouds in the target area. 2. Royal Rainmaking operations in the process of raising fat. Using Royal Rainmaking Formula 8 Calcium Oxide or Formula 6 Calcium Chloride. Operating in the upwind area in the vicinity of Bangkok. and the most perimeter To raise clouds to become larger and have the power to absorb dust. 3. Practice of the technique of inverse atmospheric temperature reduction. By scattering dry ice or spraying water. To vent dust around the inversion level (inversion atmosphere) or above the inversion level (inversion atmosphere) in order to create a channel for dust levels to rise into the atmosphere above. During this period, the weather conditions are likely to meet the conditions for Royal Rainmaking operations. With relative humidity a round 65 - 75%, there is a chance that there will be rain during an operational flight. On February 6, 2024, the Royal Rainmaking Operations Unit, Chiang Mai Province Nakhon Sawan Province Rayong Province and Hua Hin District Prachuap Khiri Khan Province Flying to perform weather modification operations to help alleviate the problem of small dust particles in the northern region, Bangkok and surrounding areas, resulting in reduced dust levels in those areas. Including flying for Royal Rainmaking operations to help agricultural areas. causing rain in the Ban Bueng District area Chonburi Province The Department of Royal Rainmaking and Agricultural Aviation continues to closely monitor weather conditions every day in order to plan Royal Rainmaking operations flights. If the weather conditions meet the conditions, the flight will be operated immediately. People can report information and request royal rain on a daily basis. By contacting at telephone number 02-109-5100 ext. 410 or through the Facebook page of th e Department of Royal Rainmaking and Agricultural Aviation, Instagram, Tiktok, Twitter : @drraa_pr . Source: Thai News Agency