Abstract
Air pollution associated with wildfire smoke transport and heat wave in summer pose serious public health concerns in the populated New York City (NYC) area. In this study, we present a synergistic lidar, ceilometer and in-situ observation for wildfire smoke transport and planetary-boundary-layer (PBL) variation in the NYC urban and coastal area during the summer 2018 Long Island Sound Tropospheric Ozone (O3) Study (LISTOS). A dense smoke plume and mixing into PBL on August 15-17, 2018 was analyzed while the coincident enhancement of PM2.5, CO and O3 exceedance of NAAQS was demonstrated from both the observation and model. In addition, we show the temporal-spatial variation and difference of the PBL-height (PBLH) in the NYC urban and its coastal vicinity. We further evaluate the NAM-CMAQ model forecast of O3, PM2.5 and PBLH with the ground observations.
Highlights
Air pollution episodes frequently occur in summer in New York City (NYC) area, O3 exceedance of national ambient air quality standard (NAAQS) in the urban and downwind coastal area of Long Island Sound (LIS) [1]
Three-day shipborne measurements for the PBLH, VOCs, O3 and meteorological parameters are made in the LIS; and a coastal site facilitated with a ceilometer and O3 monitor was operated from July 27 to Sep
The sources and transport paths from the northwest US/Canada to the northeast US are verified by the NOAA-HMS, HYSPLIT backward trajectory and HRRR-smoke model
Summary
Air pollution episodes frequently occur in summer in NYC area, O3 exceedance of national ambient air quality standard (NAAQS) in the urban and downwind coastal area of Long Island Sound (LIS) [1]. Long-range transport of wildfire smoke from northwest US and Canada can interact with PBL and affect the local air quality in NYC [2].
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