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Nov 19, 2009 · The problematic particles, called fine particulate matter (PM 2.5 ), are 2.5 micrometers or less in diameter, about a tenth the fraction of human hair. These small particles can get past the body’s normal defenses and penetrate deep into the lungs. To fill in these gaps in surface-based PM 2.5 measurements,...

NASA - Getting the Big Picture on Houston's Air PollutionMar 30, 2020NASA - A New IDEA in Air Quality MonitoringMar 29, 2020Paving the Way for Space-Based Air Pollution Sensors NASAJun 21, 2011Environmental Impact Statement for Proposed Demolition and ... See more results

Hazardous smog in North, again

6 days ago · The levels of particulate matter 2.5 micrometres and less in diameter (PM2.5) ranged from 32-241 microgrammes per cubic metre of air in the North over the past 24 hours.

Particulate Matter (PM) Basics Particulate Matter (PM ...

Particle pollution includes PM10 inhalable particles, with diameters that are generally 10 micrometers and smaller; and PM2.5 fine inhalable particles, with diameters that are generally 2.5 micrometers …

Amid Smog Wave, an Artist Molds a ... - The New York Times

Dec 02, 2015 · But “Brother Nut,” a performance artist, has something solid to show from the acrid soup in the air a brick of condensed pollution. For 100 days, Brother Nut dragged a roaring, industrial-strength vacuum cleaner around the Chinese capital’s landmarks, sucking up dust from the atmosphere.

PM2.5 dust particles – Thai PBS World

PM2.5 dust particles have returned to Bangkok and its neighboring provinces, with nine areas found to contain levels exceeding the 50-micron standard level today, according to the latest air quality readings by the Pollution Control…

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Aug 08, 2018 · The WHO advises exposure to fine dust, or PM10, of no more than a daily average of 50 micrograms per cubic meter, and to ultra-fine dust, or PM2.5, of no more than 25.

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New York, USA Air Pollution Real-time Air Quality Index

The GAIA air quality monitoring stations are using high-tech laser particle sensors to measure in real-time PM2.5 pollution, which is one of the most harmful air pollutants. Very easy to set up, they only require a WIFI access point and a USB power supply. Once connected, air pollution levels are reported instantaneously and in real-time on our ...

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Mar 31, 2020 · Of all air pollutants, PM2.5 is the smallest – and the most dangerous to human health. Clicking on a spot on the interactive map shows the wind speed and the amount of pollution in the air. For instance, these screenshots show how, on March 6, Mumbai had a wind speed of 13km per hour and a pollution factor of PM2.5 94.7 µg/m³.

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22 areas of Bangkok found with excessive PM2.5 dust in the ...

The Pollution Control Department (PCD) announced the levels of PM2.5 dust in the atmosphere today were measured between 38 and 79 microns, with excessive dust in 22 areas, including Lat Phrao Soi 95 in Wang Thong Lang district, which recorded the highest level, 79 µg/m3.

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Northern Thailand chokes under shroud of smog The Thaiger

A red alert signifying severe air pollution was posted for the three northern provinces. Levels of PM2.5 (smoke and dust particles 2.5 micrometres and less in diameter) ranged from 32-241 microgrammes per cubic metre of air in the North over the past 24 hours. The governmnent-set “safe” level is at 50mcg, double the international standard.

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Particle Pollution (PM) - AirNow

Coarse dust particles (PM10) are 2.5 to 10 micrometers in diameter. Sources include crushing or grinding operations and dust stirred up by vehicles on roads. Fine particles (PM2.5) are 2.5 micrometers in diameter or smaller, and can only be seen with an electron microscope.

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Despite the growing outrage and anxiety from the public over the surge in PM2.5 levels, the head of Pollution Control Department insisted in an interview that the current air quality levels are ...

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Fine dust and toxic smog are suffocating these Asian ... - CNN

Jan 15, 2019 · Parts of Asia are chocking under a thick layer of smog, leading at least one country to experiment in extreme forms of weather modification in an attempt to clear the toxic brown skies.

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It’s no secret that New Delhi has a serious air pollution problem.But this week, things went from regular bad to real life is now the Upside Down.. A river of dust and sand combined with man-made air pollutants to send levels of particulate matter soaring across India’s northern tier beginning on Tuesday, the Hindu reports. Sensors scattered across the capital city show the air quality ...

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Jan 09, 2020 · Brake dust is the source of approximately 20% of total PM2.5 traffic pollution. These are particles small enough to be inhaled into the deepest regions of the lung—PM2.5 …

Mask On PM2.5 Smog Returns to Bangkok

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Authorities do little to halt severe air pollution in ...

Nov 04, 2019 · Levels of tiny particulate pollution, PM2.5, spiked in the Indian capital Delhi this weekend, at more than ten times the safety limit ... breathing and post footage of views obscured by grey smog ...

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Jan 15, 2019 · According to the Thai Pollution Control Department, parts of the city are experiencing levels as high as PM2.5—well in excess of the safe level of PM0.5 and enough to place us in the top 10 cities with the worst air pollution in the world. ... Simple but effective, this affordable haze-resistant N95 mask can block out PM2.5 levels of dust ...

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What's the difference between PM10 and PM2.5?

The difference between PM10 and PM2.5 is size. “PM” refers to particulate matter—particles in the air. Those particles are things like organic dust, airborne bacteria, construction dust, and coal particles from power plants (here’s what researchers in Shanghai found when they collected air pollution particles and found out what they were made of).

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Nov 06, 2016 · New Delhi Crippled by Pollution, Forcing Closure of Schools and Power Plants. An Indian pedestrian walks through heavy smog in New Delhi, Sunday. ... roads be doused with water to settle dust. New ...

Air Pollution and the Health of New Yorkers

5 I Air Pollution and the Health of New Yorkers The Impact of Fine Particles and Ozone Introduction and Background Air pollution is one of the most serious environmental threats to urban populations (Cohen 2005). Exposures vary among and within urban areas, but all people living in cities are exposed, and many are harmed, by current levels

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Delhi pollution levels 15 times the safe limit, no respite in sight Delhi’s pollution touched a new high on Saturday with the levels of particulate matter finer than 2.5 micrometers (PM2.5 ...

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South Korea smothered in Chinese air pollution - UPI

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Nov 14, 2015 · PM is Particulate Matter. PM10 and PM2.5 are its sizes. As seen in the picture below, the diameter of human hair is between 50-70 micrometres. PM10 is 10 micrometres or less and PM2.5 is 2.5 micrometres or less. Particulate matter comes in a wide ...

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Smog at unhealthy levels as forest fires rage in Phayao

Forest fires have raised the level of particulate matter less than 2.5 (PM2.5) microns in Phayao province to unhealthy levels. On Friday night (March 27), forest fires broke out in various areas, such as Ban Phrathat Khing Kaeng in Jun district and Dong Suwan subdistrict in Dok Kham Tai district ...