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DOI | 10.1029/2018JD029453 |
The Acidity Distribution of Drops in a Deep Convective Cloud | |
Hu, J. Y.; Yin, Y.; Chen, Q. | |
2019-01-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:1页码:424-440 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | A cloud model with detailed bin microphysics as well as aqueous-phase chemistry is used to investigate how the acidity distribution of drops changes in a deep convective cloud. The results show that the concentration of hydrogen ion is higher in the relatively large droplets at the initial stage of the cloud, whereas it has an opposite dependence on the drop size at the later stage of the cloud. The spectrum distribution of drop acidity also highly varies with space, reflecting the different effects of macrophysical and microphysical processes on drop acidity. For the entire simulation period, evaporation process contributes the most to the decrease in pH values of drops, which is related to the decrease in cloud water. Condensation and collision-coalescence play an important role in modifying the chemical rates of hydrogen ion production, leading to changes in the pH values. In addition, both higher concentration of sulfur dioxide and enhanced aerosol loading lead to lower pH values of drops, but the differences in pH values under different aerosol loadings vary with time and space, which is associated with the different contribution of microphysical processes. The sensitivity tests reveal that the changes of pH values by varying aerosol loadings could have a significant impact on sulfuric acid production through aqueous oxidation of sulfur dioxide. |
英文关键词 | drop acidity distribution convective cloud microphysics processes aerosols aqueous oxidation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456689100026 |
WOS关键词 | DEPENDENT CHEMICAL-COMPOSITION ; TRANSPORT MODEL ; SIZE DEPENDENCE ; TRACE GASES ; AIR-QUALITY ; MOUNT TAI ; PART I ; CHEMISTRY ; AEROSOLS ; CHINA |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/34072 |
专题 | 气候变化 |
作者单位 | Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Key Lab Aerosol Cloud Precipitat, China Meteorol Adm, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, J. Y.,Yin, Y.,Chen, Q.. The Acidity Distribution of Drops in a Deep Convective Cloud[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(1):424-440. |
APA | Hu, J. Y.,Yin, Y.,&Chen, Q..(2019).The Acidity Distribution of Drops in a Deep Convective Cloud.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(1),424-440. |
MLA | Hu, J. Y.,et al."The Acidity Distribution of Drops in a Deep Convective Cloud".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.1(2019):424-440. |
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