Application Type: APPLICATION

MOBILE MEASUREMENT OF BLACK CARBON

Mobile measurement of aerosol Black Carbon (BC) and Brown Carbon (BrC) allows for the mapping of air pollution sources and exposures at fine spatial scales on-road measurement of emissions and exposures or rapid deployment either between pre-defined fixed sites or to emergency situations. These capabilities complement traditional monitoring approaches for air pollution assessments.   You …

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REAL TIME WILDFIRE SMOKE MONITORING

As the world’s climate becomes hotter and drier, wildfires are increasing in size, duration and severity.  Wildfire smoke can be transported for hundreds or thousands of kilometers in high concentrations.  It contains both “black” carbonaceous material (‘BC’) from high-temperature combustion; and “brown” material (‘BrC’) from smoldering, which contains an enormous range of organic compounds including …

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STUDIES OF AEROSOL CARBONACEOUS MATTER

This Application Note describes the combination of the Carbonaceous Aerosol Speciation System (CASS) and an Aerosol Chemical Speciation Monitor (ACSM). The ACSM is used for real-time monitoring of non-refractory aerosol particle mass and chemical composition.  It reports particulate ammonium, nitrate, sulfate, chloride, and other organic species as “organic matter” (OM).  The ACSM is one component …

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BLACK CARBON CAR EMISSION FACTORS

Motivation One of the main sources of air pollution is traffic. To estimate the traffic contribution to air pollution the emissions are calculated from the vehicle fleet composition and vehicle emission factors (EF). Since the emission factors depend on vehicle type (cars, heavy and light duty), engine maintenance, driving environment (city, highway, regional roads) and …

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MARINE VESSEL BLACK CARBON POLLUTION

Motivation The duration of use is usually significantly longer for marine vessels than for roadside vehicles. Therefore, these vessels are often powered by relatively old engines, which may propagate air pollution. Also, the quality of fuel used for marine vessels is usually not comparable to the quality of fuels used in the automotive sector. Therefore, …

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FOREST FIRE BLACK CARBON POLLUTION

Motivation Savanna fires are the largest global source of biomass burning emissions. While these compounds adversely impact the local air quality and long-term climate change, documentation on qualitative and quantitative characteristics of the emissions is still very scarce. The adverse effects of smoke on air quality and visibility are of great concern for fire and …

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GLOBAL BLACK CARBON POLLUTION

Motivation Black carbon (BC) has a unique and important role in the Earth’s climate system because it absorbs solar radiation, influences cloud processes, and alters snow and ice cover melting. BC is the second-largest climate warmer, after carbon dioxide. A large fraction of atmospheric black carbon concentrations is due to anthropogenic activities. Concentrations respond quickly …

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URBAN MAPS OF BLACK CARBON POLLUTION

Motivation Urban air includes many microenvironments to which the citizen is exposed at different times of the day. The air quality of most of them is very different from that measured at urban background monitoring sites. Access to detailed comparisons in air quality variations encountered when commuting through a city offers the urban traveler a …

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