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DOI | 10.5194/acp-18-275-2018 |
Uncertainty in aerosol hygroscopicity resulting from semi-volatile organic compounds | |
Goulden, Olivia; Crooks, Matthew; Connolly, Paul | |
2018-01-10 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:1页码:275-287 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | We present a novel method of exploring the effect of uncertainties in aerosol properties on cloud droplet number using existing cloud droplet activation parameterisations. Aerosol properties of a single involatile particle mode are randomly sampled within an uncertainty range and resulting maximum supersaturations and critical diameters calculated using the cloud droplet activation scheme. Hygroscopicity parameters are subsequently derived and the values of the mean and uncertainty are found to be comparable to experimental observations. A recently proposed cloud droplet activation scheme that includes the effects of co-condensation of semi-volatile organic compounds (SVOCs) onto a single lognormal mode of involatile particles is also considered. In addition to the uncertainties associated with the involatile particles, concentrations, volatility distributions and chemical composition of the SVOCs are randomly sampled and hygroscopicity parameters are derived using the cloud droplet activation scheme. The inclusion of SVOCs is found to have a significant effect on the hygroscopicity and contributes a large uncertainty. For non-volatile particles that are effective cloud condensation nuclei, the co-condensation of SVOCs reduces their actual hygroscopicity by approximately 25 %. A new concept of an effective hygroscopicity parameter is introduced that can computationally efficiently simulate the effect of SVOCs on cloud droplet number concentration without direct modelling of the organic compounds. These effective hygroscopicities can be as much as a factor of 2 higher than those of the non-volatile particles onto which the volatile organic compounds condense. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419807100003 |
WOS关键词 | CLOUD DROPLET NUMBER ; ATMOSPHERIC AEROSOLS ; CONDENSATION NUCLEI ; ACTIVATION ; PARAMETERIZATION ; PARTICLES ; GROWTH ; SIZE ; CHEMISTRY ; POLLUTION |
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/30425 |
专题 | 地球科学 |
作者单位 | Univ Manchester, Sch Earth Atmospher & Environm Sci, Oxford Rd, Manchester M13 9PL, Lancs, England |
推荐引用方式 GB/T 7714 | Goulden, Olivia,Crooks, Matthew,Connolly, Paul. Uncertainty in aerosol hygroscopicity resulting from semi-volatile organic compounds[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(1):275-287. |
APA | Goulden, Olivia,Crooks, Matthew,&Connolly, Paul.(2018).Uncertainty in aerosol hygroscopicity resulting from semi-volatile organic compounds.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(1),275-287. |
MLA | Goulden, Olivia,et al."Uncertainty in aerosol hygroscopicity resulting from semi-volatile organic compounds".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.1(2018):275-287. |
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