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« เมื่อ: 04/03/18 เวลา 08:53:57 » |
 
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Explaining Chiang Mais Smoke Pollution With Real Data
with no promising news or solutions being proposed by the government, we turn to the community for some updates and information. Meet a resident expat who has taken it upon himself to set up a detailed network of air pollution sensors that are both low cost and accurate, in a bid to collect a quantatitve amount of pm2.5 data for the first time in Chiang Mai in hopes of raising awareness, informing policy makers and hopefully even pinpointing specific sources of smoke by combining ground data with real time satellite information.
These particulates range in size and are referred to as pm10 and pm2.5 10 and 2.5 micrometres in width respectively. The worse the air quality is, the more micrograms (μg) of these particles are found in every cubic metre of air which is the standard measurement used to calculate air quality, written as μg/m3. Breathing in these particles can lead to permanent DNA mutations, heart attacks and premature death.
The problem with pm2.5 is that the particles are so small that they can penetrate deep into the lungs and even enter the bloodstream unfiltered. Roughly 20 pm2.5 particles can fit across the width of one human hair, compared to just five pm10 particles. According to a study by the European Study of Cohorts for Air Pollution Effects of over 300,000 people, every 5μg/m3 increase in pm2.5 increases the risk of lung cancer by an average of 18% over a 12.8 year period.
http://www.chiangmaicitylife.com/citylife-articles/explaining-chiang-mai s-smoke-pollution-real-data/
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