دورية أكاديمية
Global-scale combustion sources of organic aerosols: sensitivity to formation and removal mechanisms
| العنوان: | Global-scale combustion sources of organic aerosols: sensitivity to formation and removal mechanisms |
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| المؤلفون: | A. P. Tsimpidi, V. A. Karydis, S. N. Pandis, J. Lelieveld |
| المصدر: | Atmospheric Chemistry and Physics, Vol 17, Pp 7345-7364 (2017) |
| بيانات النشر: | Copernicus Publications, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | Organic compounds from combustion sources such as biomass burning and fossil fuel use are major contributors to the global atmospheric load of aerosols. We analyzed the sensitivity of model-predicted global-scale organic aerosols (OA) to parameters that control primary emissions, photochemical aging, and the scavenging efficiency of organic vapors. We used a computationally efficient module for the description of OA composition and evolution in the atmosphere (ORACLE) of the global chemistry–climate model EMAC (ECHAM/MESSy Atmospheric Chemistry). A global dataset of aerosol mass spectrometer (AMS) measurements was used to evaluate simulated primary (POA) and secondary (SOA) OA concentrations. Model results are sensitive to the emission rates of intermediate-volatility organic compounds (IVOCs) and POA. Assuming enhanced reactivity of semi-volatile organic compounds (SVOCs) and IVOCs with OH substantially improved the model performance for SOA. The use of a hybrid approach for the parameterization of the aging of IVOCs had a small effect on predicted SOA levels. The model performance improved by assuming that freshly emitted organic compounds are relatively hydrophobic and become increasingly hygroscopic due to oxidation. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 7345-2017 1680-7316 1680-7324 |
| Relation: | http://www.atmos-chem-phys.net/17/7345/2017/acp-17-7345-2017.pdf; https://doaj.org/toc/1680-7316; https://doaj.org/toc/1680-7324 |
| DOI: | 10.5194/acp-17-7345-2017 |
| URL الوصول: | https://doaj.org/article/d4e44c4cc2b04d60aa55a777eddc44c5 |
| رقم الأكسشن: | edsdoj.4e44c4cc2b04d60aa55a777eddc44c5 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 73452017 16807316 16807324 |
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| DOI: | 10.5194/acp-17-7345-2017 |