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| DOI | 10.1038/s41561-022-00917-2 |
| Sea spray as an obscured source for marine cloud nuclei | |
| Xu W.; Ovadnevaite J.; Fossum K.N.; Lin C.; Huang R.-J.; Ceburnis D.; O’Dowd C. | |
| 发表日期 | 2022 |
| ISSN | 1752-0894 |
| 起始页码 | 282 |
| 结束页码 | 286 |
| 卷号 | 15期号:4 |
| 英文摘要 | Sea spray aerosols (SSAs) make up a substantial proportion of aerosols in the global atmosphere and, especially when considering marine haze and cloud layers, can have a large impact on cloud formation and atmospheric radiative balance. Although SSA has the highest cloud condensation nuclei (CCN) activation potential, the majority of its population, residing in sub-micrometre sizes, are often obscured by non-sea-spray CCN. Quantification of SSA-derived CCN is fundamental in understanding the radiative budget. Recent approaches to estimate the sub-micrometre SSA employed a free-monomodal lognormal analysis that depicts the global oceanic CCN population comprising less than 30% SSA. Here we derive SSA distributions from a unique five-year dataset of aerosol microphysics and hygroscopicity (water uptake ability) over Atlantic waters. This approach utilizes the distinctive ultra-high hygroscopicity signature of inorganic sea salt and is able to identify the sub-micrometre sea spray down to 35 nm diameter with high time and size resolution. In stark contrast to previous studies, the hygroscopicity coupled multimodal fitting analysis yields SSA-derived CCN as much as 500% in excess of estimates produced using the free-monomodal approach. Our results suggest the contribution of SSA to global CCN, particularly Aitken mode SSA, has probably been overlooked. © 2022, The Author(s), under exclusive licence to Springer Nature Limited. |
| 语种 | 英语 |
| scopus关键词 | aerosol; cloud condensation nucleus; hygroscopicity; marine environment; radiative forcing; sea salt; spray; Atlantic Ocean |
| 来源期刊 | Nature Geoscience
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/262220 |
| 作者单位 | School of Physics and Ryan Institute’s Centre for Climate & Air Pollution Studies, National University of Ireland Galway, Galway, Ireland |
| 推荐引用方式 GB/T 7714 | Xu W.； Ovadnevaite J.； Fossum K.N.； Lin C.； Huang R.-J.； Ceburnis D.； O’Dowd C.. Sea spray as an obscured source for marine cloud nuclei[J],2022,15(4). |
| APA | Xu W.； Ovadnevaite J.； Fossum K.N.； Lin C.； Huang R.-J.； Ceburnis D.； O’Dowd C..(2022).Sea spray as an obscured source for marine cloud nuclei.Nature Geoscience,15(4). |
| MLA | Xu W.； Ovadnevaite J.； Fossum K.N.； Lin C.； Huang R.-J.； Ceburnis D.； O’Dowd C.."Sea spray as an obscured source for marine cloud nuclei".Nature Geoscience 15.4(2022). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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