CityNews – Anuparp Pawawattananusorn, director of the Northern Royal Rainmaking Centre, told reporters that the NRRC is keeping an eye on the pollution level and air quality index (AQI) in northern Thailand.
On February 12th he AQIs in Lampang and Phrae went over the standard limit. The NRRC sent planes to some of the burning areas. They added that the official rainmaking season is March 1st – October 20th covering Chiang Mai, Lamphun, Lampang, Phayao, Chiang Rai, Mae Hong Son and Tak. The season lasts 264 days, and employs CN1 aircraft, a Caravan 1 small aircraft, an SKA small aircraft and a scouting helicopter. For Phitsanulok and Phrae, the rainmaking season spans 233 days. They’re equipped with two CASA planes. The artificial rain is most effective during late March to early April due to the relative humidity, said the office.
Prayat Anantapradit, deputy director of Chiang Mai Ministry of Natural Resources and Environment, summarised Chiang Mai overall air quality during February 1-24. He said that during the average 24-hour period particles smaller that 10 microns (PM10) were measured between 19-95 micrograms per cubic metre, which is considered moderate to good. There were 103 reports of forest fires covering 877 rai (1,403,200 sq.m.) They found 130 hotspots. Amphur Doi Tao is the most high-risk area with 30 hotspots, Om Koi has 23, Mae Jam, 21.
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? ? ? ? ? ?-? ? ? ? ? 12 ? ? ?.? ? ? ? ? 1 ? – 20 ? 57 ? ? ? ? ? ? ? ? ? ? 264 ? ? CN 1 ? ? CARAVAN 1 ? ? SKA 1 ? ? 1 ? ? ? 233? ? CASA ? 2 ? ? 20,000 ? ? ? ? ? ?.? ?.? ?.? ?.? ?.? ? ?.? ?.? ?.? ?.? ?.? ?.? ? ?.? ? ?.? ?
? ? ? ? ? ?.? ? ? ? 1-24 ? 57 ? 10 ? (PM10) ? 24 ? ? 19-95 ? ? – ? ? ? 1-23 ? 57 ? 103 ? ? 887 ? ? (Hot Spot) ? 130 ? ? ?.? 32 ? ? ? 23 ? ? 21 ? ? 10 ? ? ? ? 4 ? ? ? ? 2 ? ? ? ? 1 ?