globalchange  > 影响、适应和脆弱性
DOI: 10.1029/2012JD018136
论文题名:
Inorganic and black carbon aerosols in the Los Angeles Basin during CalNex
作者: Ensberg J.J.; Craven J.S.; Metcalf A.R.; Allan J.D.; Angevine W.M.; Bahreini R.; Brioude J.; Cai C.; Coe H.; De Gouw J.A.; Ellis R.A.; Flynn J.H.; Haman C.L.; Hayes P.L.; Jimenez J.L.; Lefer B.L.; Middlebrook A.M.; Murphy J.G.; Neuman J.A.; Nowak J.B.; Roberts J.M.; Stutz J.; Taylor J.W.; Veres P.R.; Walker J.M.; Seinfeld J.H.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:4
起始页码: 1777
结束页码: 1803
语种: 英语
英文关键词: black carbon ; CalNex ; inorganic ; Los Angeles ; modeling
Scopus关键词: Aerosols ; Air quality ; Aircraft ; Calcium ; Emission control ; Fog ; Forecasting ; Models ; Three dimensional ; Aerosol size distributions ; Black carbon ; CalNex ; Community multi-scale air qualities ; Ground based measurement ; inorganic ; Los angeles ; Meteorological measurements ; Measurements ; aerosol ; air quality ; ammonia ; black carbon ; concentration (composition) ; emission control ; environmental monitoring ; interdisciplinary approach ; measurement method ; metal ; nitrate ; nitric acid ; nitrogen oxides ; pollutant source ; size distribution ; California ; Los Angeles [California] ; United States
英文摘要: We evaluate predictions from the Community Multiscale Air Quality (CMAQ version 4.7.1) model against a suite of airborne and ground-based meteorological measurements, gas- and aerosol-phase inorganic measurements, and black carbon (BC) measurements over Southern California during the CalNex field campaign in May/June 2010. Ground-based measurements are from the CalNex Pasadena ground site, and airborne measurements took place onboard the Center for Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS) Navy Twin Otter and the NOAA WP-3D aircraft. BC predictions are in general agreement with observations at the Pasadena ground site and onboard the WP-3D, but are consistently overpredicted when compared to Twin Otter measurements. Adjustments to predicted inorganic mass concentrations, based on predicted aerosol size distributions and the AMS transmission efficiency, are shown to be significant. Owing to recent shipping emission reductions, the dominant source of sulfate in the L.A. Basin may now be long-range transport. Sensitivity studies suggest that severely underestimated ammonia emissions, and not the exclusion of crustal species (Ca2 +, K+, and Mg2 +), are the single largest contributor to measurement/model disagreement in the eastern part of the L.A. Basin. Despite overstated NOx emissions, total nitrate concentrations are underpredicted, which suggests a missing source of HNO 3 and/or overprediction of deposition rates. Adding gas-phase NH 3 measurements and size-resolved measurements, up to 10 μm, of nitrate and various cations (e.g. Na+, Ca2 +, K +) to routine monitoring stations in the L.A. Basin would greatly facilitate interpreting day-to-day fluctuations in fine and coarse inorganic aerosol. Key pointsWe measured inorganic gas- and aerosol-phase species during CalNexWe compare ground-based and airborne measurements to CMAQ predictionsMeasure/model agreement varies depending on the species and location © 2012. American Geophysical Union. All Rights Reserved.
资助项目: NA09OAR4310128
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63926
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, United States; Combustion Research Facility, Sandia National Laboratories, Livermore, CA, United States; National Centre for Atmospheric Science, University of Manchester, Manchester, United Kingdom; School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester, United Kingdom; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Chemical Sciences Division, Earth System Research Laboratory, NOAA, Boulder, CO, United States; Department of Environmental Sciences, University of California, Riverside, Riverside, CA, United States; Planning and Technical Support Division, Air Resources Board, California Environmental Protection Agency, Sacramento, CA, United States; Harvard University, Cambridge, MA, United States; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, United States; Department of Chemistry, University of Toronto, Toronto, ON, Canada; Department of Atmospheric Sciences, University of California, Los Angeles, CA, United States; Max Planck Institute for Chemistry in Mainz, Germany; Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, United States

Recommended Citation:
Ensberg J.J.,Craven J.S.,Metcalf A.R.,et al. Inorganic and black carbon aerosols in the Los Angeles Basin during CalNex[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)
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