Aerosol Composition and Trends Andrew Martahus. Particulate Matter: Solid or Liquid Particles in Air Size and Composition Although particulate matter.

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Presentation transcript:

Aerosol Composition and Trends Andrew Martahus

Particulate Matter: Solid or Liquid Particles in Air Size and Composition Although particulate matter is made up of many chemical species, there are 5-6 key contributors to PM mass and haze

Particulate Matter: Size Distribution

Ammonium Sulfate= * [SO 4 ] Ammonium Nitrate = 1.29 * [NO 3 - ] Organics = 1.8 [OC] Light Absorbing Carbon = [EC] Soil = 2.2[Al]+2.49[Si]+1.63[Ca]+2.42[Fe] +1.94[Ti] Sea Salt = 1.8 * [Cl-] Particulate Matter: Chemical Composition

Measurements

Analysis Framework I: Sensory-Motor Loop Assessment Compare to Goals, Plan Reductions Track Progress Controls (Actions) Monitoring (Sensing) Set Goals Assessment turns data into knowledge for decision making & actions through analysis (science & eng.) Monitoring collects multi-sensory data from surface and satellite platforms and Human activities exert pressures, e.g burning fossil fuels, that alter the state of environment. The impaired environmental state, elicits responses, such as regulations in a feedback loop All living organisms use this type of sensory-motor feedback to maintain their existence. Monitoring, Assessment, Control are the necessary steps for sustainable development.

Example Using 208 Pb as a marker (common in Asian coal) researchers in California where able track pollution from eastern Asia feed&utm_campaign=Feed:+EnvironmentalScienceTechnologyOnlineNews+ES%26T+Online+ News

Example Using 208 Pb as a marker (common in Asian coal) researchers in California where able track pollution from eastern Asia Analysis showed that the average Asian lead in PM 2.5 is 29% Advanced isotope tracking may give researchers more data which would help in determining atmospheric models and possibly international air quality legislation _medium=feed&utm_campaign=Feed:+EnvironmentalScienceTechnologyOnlineNe ws+ES%26T+Online+News