Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7445-2017 |
Metrics to quantify the importance of mixing state for CCN activity | |
Ching, Joseph1,4; Fast, Jerome1; West, Matthew2; Riemer, Nicole3 | |
2017-06-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan |
英文摘要 | It is commonly assumed that models are more prone to errors in predicted cloud condensation nuclei (CCN) concentrations when the aerosol populations are externally mixed. In this work we investigate this assumption by using the mixing state index (chi) proposed by Riemer and West (2013) to quantify the degree of external and internal mixing of aerosol populations. We combine this metric with particle-resolved model simulations to quantify error in CCN predictions when mixing state information is neglected, exploring a range of scenarios that cover different conditions of aerosol aging. We show that mixing state information does indeed become unimportant for more internally mixed populations, more precisely for populations with chi larger than 75 %. For more externally mixed populations (chi below 20 %) the relationship of chi and the error in CCN predictions is not unique and ranges from lower than -40% to about 150 %, depending on the underlying aerosol population and the environmental supersaturation. We explain the reasons for this behavior with detailed process analyses. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437932100001 |
WOS关键词 | CLOUD CONDENSATION NUCLEI ; AEROSOL-PARTICLES ; HYGROSCOPIC PROPERTIES ; DROPLET ACTIVATION ; OPTICAL-PROPERTIES ; ORGANIC AEROSOL ; CLIMATE MODEL ; CARBON ; PLUME ; PARAMETERIZATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30365 |
专题 | 地球科学 |
作者单位 | 1.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99354 USA; 2.Univ Illinois, Dept Mech Sci & Engn, 1206 W Green St, Urbana, IL 61801 USA; 3.Univ Illinois, Dept Atmospher Sci, 105 S Gregory St, Urbana, IL 61801 USA; 4.Japan Meteorol Agcy, Meteorol Res Inst, 1-1 Nagamine, Tsukuba, Ibaraki 3050052, Japan |
推荐引用方式 GB/T 7714 | Ching, Joseph,Fast, Jerome,West, Matthew,et al. Metrics to quantify the importance of mixing state for CCN activity[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12). |
APA | Ching, Joseph,Fast, Jerome,West, Matthew,&Riemer, Nicole.(2017).Metrics to quantify the importance of mixing state for CCN activity.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12). |
MLA | Ching, Joseph,et al."Metrics to quantify the importance of mixing state for CCN activity".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(2017). |
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