globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50783
论文题名:
Heterogeneous formation of nitryl chloride and its role as a nocturnal NO<inf>x</inf> reservoir species during CalNex-LA 2010
作者: Mielke L.H.; Stutz J.; Tsai C.; Hurlock S.C.; Roberts J.M.; Veres P.R.; Froyd K.D.; Hayes P.L.; Cubison M.J.; Jimenez J.L.; Washenfelder R.A.; Young C.J.; Gilman J.B.; De Gouw J.A.; Flynn J.H.; Grossberg N.; Lefer B.L.; Liu J.; Weber R.J.; Osthoff H.D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:18
起始页码: 10638
结束页码: 10652
语种: 英语
英文关键词: Field measurements ; nitrogen oxides ; Nitryl chloride ; nocturnal chemistry
Scopus关键词: Aerosols ; Measurements ; Nitrogen oxides ; Aerosol size distributions ; Comprehensive measurement ; Dinitrogen pentoxide ; Field measurement ; Heterogeneous formation ; Liquid water content ; Nitryl chloride ; Production efficiency ; Chlorine compounds ; aerosol ; chemical composition ; field method ; heterogeneity ; measurement method ; nocturnal activity ; particle size ; photochemistry ; regional climate ; California ; Pasadena ; United States
英文摘要: The nocturnal conversion of dinitrogen pentoxide (N2O 5) to nitryl chloride (ClNO2) on chloride-containing aerosol can be a regionally important NOx (= NO + NO2) recycling and halogen activation pathway that affects oxidant photochemistry the following day. Here we present a comprehensive measurement data set acquired at Pasadena, California, during the CalNex-LA campaign 2010 that included measurements of odd nitrogen and its major components (NOy = NO x + NO3 + 2N2O5 + ClNO2 + HNO3 + HONO + peroxyacyl, alkyl, and aerosol nitrates) and aerosol size distribution and composition. Nitryl chloride was present during every night of the study (median mixing ratio at sunrise 800 pptv) and was usually a more significant nocturnal NOx and odd oxygen (Ox = O 3 + NO2 + 3N2O5 + ClNO2) reservoir species than N2O5 (whose concentrations were calculated from its equilibrium with NO2 and NO3). At sunrise, ClNO2 accounted for 21% of NOz (=NOy - NOx), 4% of NOy, and 2.5% of Ox, respectively (median values). Kinetic parameters for the N2O5 to ClNO2 conversion were estimated by relating ClNO2 concentrations to their time-integrated heterogeneous production from N 2O5 and were highly variable between nights. Production of ClNO2 required conversion of N2O5 on submicron aerosol with average yield (φ) and N2O5 reactive uptake probability (γ) of γφ = 0.008 (maximum 0.04), scaled with submicron aerosol chloride content, and was suppressed by aerosol organic matter and liquid water content. Not all of the observed variability of ClNO2 production efficiency could be rationalized using current literature parameterizations. Key Points We present field measurements of ClNO2 during Calnex-LA 2010.ClNO2 was a more significant nocturnal NOx and Ox reservoir than N2O5.Rates of N2O5 to ClNO2 conversion varied between nights. ©2013. American Geophysical Union. All Rights Reserved.
资助项目: ATM-0802237
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63295
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 Chemistry, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada; Department of Chemistry, University of Indianapolis, Indianapolis, IN, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States; Earth System Research Laboratory, Chemical Sciences Division, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Max-Planck-Institut für Atmosphärische Chemie, Mainz, Germany; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, United States; Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, Canada; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States

Recommended Citation:
Mielke L.H.,Stutz J.,Tsai C.,et al. Heterogeneous formation of nitryl chloride and its role as a nocturnal NO<inf>x</inf> reservoir species during CalNex-LA 2010[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(18)
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