دورية أكاديمية
Markedly different impacts of primary emissions and secondary aerosol formations on aerosol mixing states revealed by simultaneous measurements of CCNC, V/HTDMA and SP2
| العنوان: | Markedly different impacts of primary emissions and secondary aerosol formations on aerosol mixing states revealed by simultaneous measurements of CCNC, V/HTDMA and SP2 |
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| المؤلفون: | Tao, Jiangchuan, Luo, Biao, Xu, Weiqi, Zhao, Gang, Xu, Hanbin, Xue, Biao, Zhai, Miaomiao, Xu, Wanyun, Zhao, Huarong, Ren, Sanxue, Zhou, Guangsheng, Liu, Li, Kuang, Ye, Sun, Yele |
| المصدر: | eISSN: 1680-7324 |
| سنة النشر: | 2023 |
| المجموعة: | Copernicus Publications: E-Journals |
| الوصف: | The aerosol mixing state is a crucial physical-chemical property that affects their optical properties and cloud condensation nuclei (CCN) activity. Multiple techniques are commonly employed to determine aerosol mixing states for various applications, and comparisons between these techniques provide insights of the variations in aerosol chemical and physical properties. These techniques include size-resolved CCN activity measurements using a system with CCN counter (CCNC) coupled with a differential mobility analyzer (DMA), a Humidified/Volatility Tandem differential mobility analyzer (H/V-TDMA) which measures aerosol hygroscopicity/volatility distributions, and a single particle soot photometer (SP2) which directly quantifies black carbon (BC) mixing states. This study provides a first time intercomparisons of aerosol mixing state parameters obtained through simultaneous measurements of a DMA-CCNC, a H/VTDMA and a DMA-SP2. The impact of primary aerosols emissions and secondary aerosol formations on the aerosol mixing states and intercomparison results were analyzed. The results showed that differences in mixing state parameters measured by different techniques varied greatly under different conditions. The V-TDMA and DMA-SP2 measurements showed that the non-volatile population identified by the V-TDMA was mainly contributed by BC-containing aerosols. The HTDMA and DMA-SP2 measurements indicated that a substantial proportion of nearly hydrophobic aerosols were not contributed from BC-containing aerosols, but likely originated from fossil fuel combustion and biomass burning emissions. Synthesized comparison results between DMA-CCNC, HTDMA and DMA-SP2 measurements revealed that some of the nearly hydrophobic BC-free particles were CCN-inactive under supersaturated conditions, likely from fossil combustion emissions, while others were CCN-active under supersaturated conditions linked to biomass burning emissions. Fossil fuel combustion-emitted BC-containing aerosols tended to be more externally mixed with other ... |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | https://acp.copernicus.org/preprints/acp-2022-840Test/ |
| DOI: | 10.5194/acp-2022-840 |
| الإتاحة: | https://doi.org/10.5194/acp-2022-840Test https://acp.copernicus.org/preprints/acp-2022-840Test/ |
| رقم الانضمام: | edsbas.5CDB06E5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.5194/acp-2022-840 |
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