DOI: 10.1016/j.atmosenv.2020.117415
论文题名: The impacts of transported wildfire smoke aerosols on surface air quality in New York State: A case study in summer 2018
作者: Hung W.-T. ; Lu C.-H.S. ; Shrestha B. ; Lin H.-C. ; Lin C.-A. ; Grogan D. ; Hong J. ; Ahmadov R. ; James E. ; Joseph E.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 227 语种: 英语
英文关键词: Aerosols
; Air entrainment
; Air quality
; Boundary layers
; Emission control
; Fires
; Network layers
; Air quality monitoring
; Anthropogenic emissions
; Boundary
; Fine particulate matter (PM2.5)
; Long range transport
; Northwestern United States
; Satellite measurements
; Wildfire
; Smoke
; aerosol
; air quality
; atmospheric pollution
; boundary layer
; entrainment
; long range transport
; particulate matter
; pollutant transport
; smoke
; vertical mixing
; wildfire
; aerosol
; air quality
; article
; boundary layer
; Canada
; New York
; plume
; seashore
; severe weather
; smoke
; summer
; wildfire
; Canada
; New York [United States]
; United States
学科: Air quality
; Boundary
; Layer entrainment
; Long-range transport
; Smoke
; Wildfire
中文摘要: Wildfire smoke aerosols, once emitted, can transport over long distances and affect surface air quality in downwind regions. In New York State (NYS), fine particulate matter (PM2.5) concentration continues to decrease due to anthropogenic emission reductions and regulatory initiatives in recent years. Smoke aerosols, however, are projected to increase, making them the dominant source of PM2.5. Thus, the influences of smoke aerosols could become more important in the future. In this study, the long-range transport of smoke aerosols, and their impacts on local air quality over NYS in mid-August 2018 were investigated using satellite measurements, ground-based networks, and model products. Satellite measurements showed extensive fire activities over the northwestern United States (US) during August 8th – 10th. Air quality monitoring sites in NYS reported a threefold increase in average PM2.5 concentration (from 8.4 ± 3.4 μg m−3 to 24.8 ± 4.0 μg m−3) on August 15th – 16th, while the ground-based profiler network detected aerosol layers at 2–5 km across the state. Analysis of backward trajectories revealed that the plumes originated from wildfires, transported through southern Canada and arrived at the east coast during a period of 5–7 days. The increased PM2.5 in NYS can be attributed to boundary layer entrainment and vertical mixing of the aloft transported smoke aerosols down to the surface. The NYS mesoscale weather network (NYSM), which is originally designed for severe weather monitoring, demonstrate the capability to probe the lower atmosphere and provide the vertical extent information of air pollutants. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160404
Appears in Collections: 气候变化与战略
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作者单位: Atmospheric Sciences Research Center, University at Albany, State University of New York, Albany, NY, United States; State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China; NOAA Earth System Research Laboratory, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Hung W.-T.,Lu C.-H.S.,Shrestha B.,et al. The impacts of transported wildfire smoke aerosols on surface air quality in New York State: A case study in summer 2018[J]. Atmospheric Environment,2020-01-01,227