DOI: 10.1016/j.atmosenv.2018.02.041
Scopus记录号: 2-s2.0-85044763644
论文题名: Refractory black carbon at the Whistler Peak High Elevation Research Site – Measurements and simulations
作者: Hanna S ; J ; , Xu J ; -W ; , Schroder J ; C ; , Wang Q ; , McMeeking G ; R ; , Hayden K ; , Leaitch W ; R ; , Macdonald A ; , von Salzen K ; , Martin R ; V ; , Bertram A ; K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 181 起始页码: 34
结束页码: 46
语种: 英语
英文关键词: Black carbon
; GEOS-Chem
; Model-measurement comparison
; Remote location
; SP2
Scopus关键词: Boundary layers
; Cluster analysis
; Refractory materials
; Black carbon
; Chemical transport models
; GEOS-Chem
; Mass concentration
; Mass median diameters
; Model measurements
; Remote location
; Sensitivity Simulation
; Carbon
; air mass
; biomass burning
; black carbon
; cluster analysis
; comparative study
; concentration (composition)
; data acquisition
; measurement method
; model
; photometer
; refraction
; simulation
; British Columbia
; Canada
; Coast Mountains
; Pacific Ocean
; Pacific Ocean (North)
; Pacific Ocean (South)
; Pacific Ocean (West)
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Measurements of black carbon at remote and high altitude locations provide an important constraint for models. Here we present six months of refractory black carbon (rBC) data collected in July–August of 2009, June–July of 2010, and April–May of 2012 using a single particle soot photometer (SP2) at the remote Whistler High Elevation Research Site in the Coast Mountains of British Columbia (50.06°N, 122.96°W, 2182 m a.m.s.l). In order to reduce regional boundary layer influences, only measurements collected during the night (2000-0800 PST) were considered. Times impacted by local biomass burning were removed from the data set, as were periods of in-cloud sampling. Back trajectories and back trajectory cluster analysis were used to classify the sampled air masses as Southern Pacific, Northern Pacific, Western Pacific/Asian, or Northern Canadian in origin. The largest rBC mass median diameter (182 nm) was seen for air masses in the Southern Pacific cluster, and the smallest (156 nm) was seen for air masses in the Western Pacific/Asian cluster. Considering all the clusters, the median mass concentration of rBC was 25.0 ± 7.6 ng/m3-STP. The Northern Pacific, Southern Pacific, Western Pacific/Asian, and Northern Canada clusters had median mass concentrations of 25.0 ± 7.6, 21.3 ± 6.9, 25.0 ± 7.9, and 40.6 ± 12.9 ng/m3-STP, respectively. We compared these measurements with simulations from the global chemical transport model GEOS-Chem. The default GEOS-Chem simulations overestimated the median rBC mass concentrations for the different clusters by a factor of 1.2–2.2. The largest difference was observed for the Northern Pacific cluster (factor of 2.2) and the smallest difference was observed for the Northern Canada cluster (factor of 1.2). A sensitivity simulation that excluded Vancouver emissions still overestimated the median rBC mass concentrations for the different clusters by a factor of 1.1–2.0. After implementation of a revised wet scavenging scheme, the simulations overestimated the median rBC mass concentrations for the different clusters by a factor of 1.0–2.0. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82940
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry, University of British Columbia, Vancouver, BC, Canada; Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, Canada; Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Droplet Measurement Technologies, Boulder, CO, United States; Atmospheric Science and Technology Directorate, Science and Technology Branch, Environment and Climate Change Canada, Toronto, ON, Canada; Canadian Centre for Climate Modelling and Analysis, Environment and Climate Change Canada, Victoria, BC, Canada; Cooperative Institute for Research in the Environmental Sciences (CIRES) and Dept. of Chemistry, University of Colorado, Boulder, CO, United States; Handix Scientific, Boulder, CO, United States
Recommended Citation:
Hanna S,J,, Xu J,et al. Refractory black carbon at the Whistler Peak High Elevation Research Site – Measurements and simulations[J]. Atmospheric Environment,2018-01-01,181