Air Quality

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Air Quality

Air Quality & Dispersion
Today, the air quality aspect of ARL research is by far the dominant theme, but distinctions among the themes remain somewhat vague. For example, the models developed for emergency response purposes are among those used for air quality prediction.
The Air Quality and Dispersion theme is one of the strongest ties that binds ARL's components together. ARL is not heavily involved in the pure science of the business. Instead, ARL focusses on the need to assemble integrated understanding and models from all available sources, to develop the capability to predict changes in air quality that will follow changes in emissions, or that will occur as a result of meteorological factors.
ARL air quality research extends to studies of atmospheric deposition essentially the coupling between the atmospheric pollutant environment and the surface below. ARL now operates the only research-grade deposition monitoring network in the nation: AIRMoN (the Atmospheric Integrated Research Monitoring Network).
Programs.
Air Quality and Deposition Modeling
Air quality models have demanded this kind of coupling for a considerable time. As a result, there are now well-developed descriptions of PBL processes in use in air quality models.
ARL research products are now receiving a wider audience, within the mesoscale modeling community at large. It is recognized that modern models are invariably data assimilative, and that modern monitoring programs require coupled modeling activities for data interpretation.
Model development programs are supported by a vigorous physical modeling program, located at Research Triangle Park, NC. ARL operates one of the nation's major fluid modeling facilities, at which studies are conducted on the effects of mountains, buildings, and other surface obstacles on atmospheric flow patterns.
Integrated Monitoring, and AIRMoN
The Atmospheric Integrated Research Monitoring Network is an atmospheric component to the overall national integrated monitoring initiative that is currently evolving.
AIRMoN has two principal components: wet and dry deposition.
ARL presently focuses its research attention on
· the measurement of precipitation chemistry with fine time resolution (AIRMoN-wet),
· the development of systems for measuring deposition, both wet and dry,
· the measurement of dry deposition using micrometeorological methods (AIRMoN-dry),
· the development of techniques for assessing air-surface exchange in areas ...

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