Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-2020-625 |
Large contribution of organics to condensational growth and formation of cloud condensation nuclei (CCN) in remote marine boundary layer | |
Guangjie Zheng, Chongai Kuang, Janek Uin, Thomas Watson, and Jian Wang | |
2020-07-03 | |
发表期刊 | Atmospheric Chemistry and Physics
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出版年 | 2020 |
英文摘要 | Marine low clouds strongly influence global climate, and their radiative effects are particularly susceptible to the concentration of cloud condensation nuclei (CCN). One major source of CCN is condensational growth of pre-CCN particles, and sulfate has long been considered the major condensing species in remote marine boundary layer. While some studies suggested that secondary organic species can contribute to the particle growth, its importance remains unclear. Here we present the first long-term observational evidence that organics play an important role in particle growth over remote oceans. To the contrary of traditional thinking, sulfate dominated condensational growth for only a small (∼18 %) fraction of the 62 observed growth events, even fewer than the organic-dominated events (24 %). During most (58 %) growth events, the major condensing species included both organics and sulfate. Potential precursors of the secondary organics are volatile organic compounds from ocean biological activities and those produced by the air-sea interfacial oxidation. Our results indicate that the condensation of secondary organics contributes strongly to the growth of pre-CCN particles, and thereby the CCN population over remote oceans. |
领域 | 地球科学 |
URL | 查看原文 |
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/281716 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Guangjie Zheng, Chongai Kuang, Janek Uin, Thomas Watson, and Jian Wang. Large contribution of organics to condensational growth and formation of cloud condensation nuclei (CCN) in remote marine boundary layer[J]. Atmospheric Chemistry and Physics,2020. |
APA | Guangjie Zheng, Chongai Kuang, Janek Uin, Thomas Watson, and Jian Wang.(2020).Large contribution of organics to condensational growth and formation of cloud condensation nuclei (CCN) in remote marine boundary layer.Atmospheric Chemistry and Physics. |
MLA | Guangjie Zheng, Chongai Kuang, Janek Uin, Thomas Watson, and Jian Wang."Large contribution of organics to condensational growth and formation of cloud condensation nuclei (CCN) in remote marine boundary layer".Atmospheric Chemistry and Physics (2020). |
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