Attainment of National Ambient Air Quality Standard-NAAQS for exposure limits to air pollutants is of great concern to State and Local agencies and communities in the United State because of potential health impacts. This is particularly important and challenging in urban areas because of high population densities and complex terrain. Exceedances of NAAQS requires states to develop implementation plans to address them and as such, studying the horizontal and vertical distribution and mixing of pollutants is key to understanding their transport and evolution. In this study, vertical and scanning horizontal lidar measurements together with in situ observations from particulate matter and trace gas analyzers from state air quality networks are used to shed light on mechanisms that impact movement of aerosol, including emissions from power generating stations at periods of high electricity demand.
In this study, multiple remote sensing and in-situ measurements are combined in order to obtain a comprehensive
understanding of the aerosol distribution in New York City. Measurement of the horizontal distribution of aerosols is
performed using a scanning eye-safe elastic-backscatter micro-pulse lidar. Vertical distribution of aerosols is measured
with a co-located ceilometer. Furthermore, our analysis also includes in-situ measurements of particulate matter and
wind speed and direction. These observations combined show boundary layer dynamics as well as transport and
inhomogeneous spatial distribution of aerosols, which are of importance for air quality monitoring.
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