DOI: 10.1002/2015JD024737
论文题名: Evaluating N2O5 heterogeneous hydrolysis parameterizations for CalNex 2010
作者: Chang W.L. ; Brown S.S. ; Stutz J. ; Middlebrook A.M. ; Bahreini R. ; Wagner N.L. ; Dubé W.P. ; Pollack I.B. ; Ryerson T.B. ; Riemer N.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 9 起始页码: 5051
结束页码: 5070
语种: 英语
英文关键词: aerosol uptake
; CalNex
; heterogeneous hydrolysis
; N2O5
; nighttime chemistry
Scopus关键词: aerosol
; air quality
; boundary layer
; hydrolysis
; nitrogen oxides
; ozone
; parameterization
; relative humidity
; spatial distribution
; temporal evolution
; thermodynamics
; California
; United States
英文摘要: Nighttime chemistry in the troposphere is closely tied to the dinitrogen pentoxide (N2O5) budget, but high uncertainties remain regarding the model representation of the heterogeneous hydrolysis of N2O5 on aerosol particles. In this study we used the community model WRF-Chem to simulate a 3-day period during the California Nexus (CalNex) Campaign in 2010. We extended WRF-Chem to include the heterogeneous hydrolysis of N2O5 and contrasted the impact of different published parameterizations of N2O5 heterogeneous hydrolysis on the spatial distribution of uptake coefficients and the resulting N2O5 concentrations. For all the cases, modeled N2O5 uptake coefficients showed strong spatial variability, with higher values in the nocturnal boundary layer compared to the residual layer, especially in environments with high relative humidities, such as over the ocean and along the coast. The best agreement of modeled and observed uptake coefficients was obtained using the parameterization by Davis et al. (2008) combined with the treatment of organic coating by Riemer et al. (2009). For this case the temporal evolution of lower boundary layer N2O5 mixing ratios was reproduced well, and the predictions of surface mixing ratios of ozone and NOx were improved. However, the model still overpredicted the uptake coefficients in the residual layer and consequently underpredicted N2O5 concentrations in the residual layer. This study also highlights that environments with low relative humidities pose a challenge for aerosol thermodynamic models in calculating aerosol water uptake, and this impacts N2O5 heterogeneous hydrolysis parameterizations. © 2016. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62892
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: Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Chemical Sciences Division, Earth System Research Laboratory, NOAA, Boulder, CO, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; Department of Environmental Sciences, University of California, Riverside, CA, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Chang W.L.,Brown S.S.,Stutz J.,et al. Evaluating N2O5 heterogeneous hydrolysis parameterizations for CalNex 2010[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(9)