Ambient air quality
10 measures
Concentration of particles less than 10 microns in size
2.5
Concentration of particular less than 2.5
Lateral and vertical dispersion would
Decrease concentration of pollutants
Who monitors air pollution
EPA
How many deaths worldwide
1-3 million
Why do we care about ambient air pollution
Affects health contributes to disease like asthma, respiratory infections, CV disease, lung cancer
Air pollution sources
Anthrogenic man made cars airplanes
Primary standards
Based on human health for protection of public health
What causes global air pollution
Cars, fossil fuels power plants, agricultural process, waste incineration,industrial accidents, natural sources
What are some air pollution determinants
Weather (direction, prevailing winds, temperatures, topography
What is thermal inversion
When there is a layer of warm air sandwiched between two layers of cool air. The warm air keeps the air pollution closer to ground level preventing vertical dispersion of pollutants
How does topography affect pollutuon
Mountains etc trap pollution laterally preventing lateral dispersion
What is NAAQS
National ambient air quality standards set by EPA
Why does particular size mater and which is worse
Natural defended don't stop these particles from entering lungs and doing damage. 2.5 go in farther
Air pollution sources
Natural dust storms volcanic activity wildfire
What is ambient air
Outdoor air
What are measurements for participant matter
PM 10 and PM 2.5
5 major air pollutants measured
Particlate matter, Sulfur dioxide Nitrogen oxide Carbon monoxide Lead Ozone
What are the 6 criteria pollutants
Particular matter, Photochemical oxidants and ground level ozone, Carbon dioxide, suffer oxides,nitrogen oxides, lead
Secondary standards
Prevent environmental and property damage for protection of a public welfare
What do 10 and 2.5 mean
Size of particules suspended in air
Air pollution sources
Stationary buildings smokestacks