Final Report: Process Models of the Equilibrium Size & State of Organic/Inorganic Aerosols for the Development of Large Scale Atmospheric Models & the Analysis of Field Data

doi:10.2172/1097441

GSTDTAP > 地球科学

DOI	10.2172/1097441
报告编号	DOE-UCDavis-ER64530
来源ID	OSTI ID: 1097441
	Final Report: Process Models of the Equilibrium Size & State of Organic/Inorganic Aerosols for the Development of Large Scale Atmospheric Models & the Analysis of Field Data
	Wexler, Anthony Stein [UC Davis]; Clegg, Simon Leslie [UC Davis]
	2013-10-26
出版年	2013
语种	英语
国家	美国
领域	地球科学
英文摘要	Our work addressed the following elements of the Call for Proposals: (i) âto improve the theoretical representation of aerosol processes studied in ASP laboratory or field studiesâ, (ii) âto enhance the incorporation of aerosol process information into modules suitable for large-scale or global atmospheric modelsâ, and (iii) âprovide systematic experimental validation of process model predictions ... using data from targeted laboratory and field experimentsâ. Achievements to the end of 2012 are described in four previous reports, and include: new models of densities and surface tensions of pure (single solute) and mixed aqueous solutions of typical aerosol composition under all atmospheric conditions (0 to 100% RH and T > 150 K); inclusion of these models into the widely used Extended Aerosol Inorganics model (E-AIM, http://www.aim.env.uea.ac.uk/aim/aim.php); the addition of vapor pressure calculators for organic compounds to the E-AIM website; the ability of include user-defined organic compounds and/or lumped surrogates in gas/aerosol partitioning calculations; the development of new equations to represent the properties of soluble aerosols over the entire concentration range (using methods based upon adsorption isotherms, and derived using statistical mechanics), including systems at close to zero RH. These results are described in publications 1-6 at the end of this report, and on the âNewsâ page of the E-AIM website (http://www.aim.env.uea.ac.uk/aim/info/news.html). During 2012 and 2013 we have collaborated in a combined observation and lab-based study of the water uptake of the organic component of atmospheric aerosols (PI Gannet Hallar, of the Desert Research Institute). The aerosol samples were analyzed using several complementary techniques (GC/MS, FT-ICR MS, and ion chromatography) to produce a very complete organic âspeciationâ including both polar and non-polar compounds. Hygroscopic growth factors of the samples were measured, and we have just completed comparisons of the data with our process model predictions based upon the inorganic and organic composition of the samples.
英文关键词	Atmospheric aerosols climate change atmospheric chemistry
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6154
专题	地球科学
推荐引用方式 GB/T 7714	Wexler, Anthony Stein [UC Davis],Clegg, Simon Leslie [UC Davis]. Final Report: Process Models of the Equilibrium Size & State of Organic/Inorganic Aerosols for the Development of Large Scale Atmospheric Models & the Analysis of Field Data,2013.