The cause of the crisis, pollution, smog, particularly in the nine northern provinces will be caused by the wildfires ago. Another reason, which is the major cause is the burning of areas for agriculture. Burning in the open The burning of weeds and debris to prepare agricultural plantations and in forest areas as well as outside of the thermal monitoring (Hotspot) satellite Aqua / Terra found that the amount of heat (Hotspot) is considerably large. In Thailand, Myanmar, Laos, Vietnam and Cambodia in the period from February to April of each area. In Thailand, Myanmar, Laos, Vietnam and Cambodia, in February and April of each year. Moreover, in such moments. The high pressure covers the northern area. Often a layer of temperature
inversion height by one. Caused by the sinking of the air upstairs (Subsidence Inversion) as the air sinks down to the compressibility of air causes heat. The layers of air with a temperature increase. And in the air, has a good balance (StableAir) is blocking layer or entrapped particles. The dust of the earth, the dust can not fly higher into the atmosphere, and can not spread out. It was a thick layer of dust increasingly causing haze condition. Smoky Cover The visibility was less than one kilometer and for monitoring the heat (Hotspot) in Thailand by satellite. MODISAqua / Terra during the period 2555 - 2557 found that the proportion of hot spots. (Hotspot)
in 6582 amounted ConservationForest 6696 and 6715 points respectively.
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