Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-8887-2017 |
Modeling the role of highly oxidized multifunctional organic molecules for the growth of new particles over the boreal forest region | |
Ostrom, Emilie1,2; Putian, Zhou3; Schurgers, Guy4; Mishurov, Mikhail5; Kivekas, Niku6; Lihavainen, Heikki6; Ehn, Mikael3; Rissanen, Matti P.3; Kurten, Theo7; Boy, Michael3; Swietlicki, Erik1; Roldin, Pontus1,3 | |
2017-07-24 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:14 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; Finland; Denmark |
英文摘要 | In this study, the processes behind observed new particle formation (NPF) events and subsequent organicdominated particle growth at the Pallas AtmosphereEcosystem Supersite in Northern Finland are explored with the one-dimensional column trajectory model ADCHEM. The modeled sub-micron particle mass is up to similar to 75% composed of SOA formed from highly oxidized multifunctional organic molecules (HOMs) with low or extremely low volatility. In the model the newly formed particles with an initial diameter of 1.5 nm reach a diameter of 7 nm about 2 h earlier than what is typically observed at the station. This is an indication that the model tends to overestimate the initial particle growth. In contrast, the modeled particle growth to CCN size ranges (> 50 nm in diameter) seems to be underestimated because the increase in the concentration of particles above 50 nm in diameter typically occurs several hours later compared to the observations. Due to the high fraction of HOMs in the modeled particles, the oxygen-to-carbon (O V C) atomic ratio of the SOA is nearly 1. This unusually high O V C and the discrepancy between the modeled and observed particle growth might be explained by the fact that the model does not consider any particle-phase reactions involving semi-volatile organic compounds with relatively low O V C. In the model simulations where condensation of low-volatility and extremely low-volatility HOMs explain most of the SOA formation, the phase state of the SOA (assumed either liquid or amorphous solid) has an insignificant impact on the evolution of the particle number size distributions. However, the modeled particle growth rates are sensitive to the method used to estimate the vapor pressures of the HOMs. Future studies should evaluate how heterogeneous reactions involving semi-volatility HOMs and other less-oxidized organic compounds can influence the SOA composition-and size-dependent particle growth. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406152600001 |
WOS关键词 | VOLATILITY BASIS-SET ; MASTER CHEMICAL MECHANISM ; DYNAMIC VEGETATION MODEL ; SIZE DISTRIBUTION DATA ; AEROSOL FORMATION ; TROPOSPHERIC DEGRADATION ; ACTIVITY-COEFFICIENTS ; EVAPORATION KINETICS ; THERMODYNAMIC MODEL ; NORTHERN FINLAND |
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/26151 |
专题 | 地球科学 |
作者单位 | 1.Lund Univ, Div Nucl Phys, POB 118, S-22100 Lund, Sweden; 2.Lund Univ, Ctr Environm & Climate Res, POB 118, S-22100 Lund, Sweden; 3.Univ Helsinki, Dept Phys, POB 64, Helsinki 00014, Finland; 4.Univ Copenhagen, Dept Geosci & Nat Resource Management, DK-1350 Copenhagen, Denmark; 5.Lund Univ, Dept Phys Geog & Ecosyst Sci, S-22362 Lund, Sweden; 6.Finnish Meteorol Inst, POB 503, Helsinki 00101, Finland; 7.Univ Helsinki, Dept Chem, POB 55, Helsinki 00014, Finland |
推荐引用方式 GB/T 7714 | Ostrom, Emilie,Putian, Zhou,Schurgers, Guy,et al. Modeling the role of highly oxidized multifunctional organic molecules for the growth of new particles over the boreal forest region[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(14). |
APA | Ostrom, Emilie.,Putian, Zhou.,Schurgers, Guy.,Mishurov, Mikhail.,Kivekas, Niku.,...&Roldin, Pontus.(2017).Modeling the role of highly oxidized multifunctional organic molecules for the growth of new particles over the boreal forest region.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(14). |
MLA | Ostrom, Emilie,et al."Modeling the role of highly oxidized multifunctional organic molecules for the growth of new particles over the boreal forest region".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.14(2017). |
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