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| DOI | 10.5194/tc-13-2345-2019 |
| Motion of dust particles in dry snow under temperature gradient metamorphism | |
| Hagenmuller P.; Flin F.; Dumont M.; Tuzet F.; Peinke I.; Lapalus P.; Dufour A.; Roulle J.; Pézard L.; Voisin D.; Ando E.; Rolland Du Roscoat S.; Charrier P. | |
| 发表日期 | 2019 |
| ISSN | 19940416 |
| EISSN | 13 |
| 起始页码 | 2345 |
| 结束页码 | 2359 |
| 卷号 | 13期号:9 |
| 英文摘要 | The deposition of light-absorbing particles (LAPs) such as mineral dust and black carbon on snow is responsible for a highly effective climate forcing, through darkening of the snow surface and associated feedbacks. The interplay between post-depositional snow transformation (metamorphism) and the dynamics of LAPs in snow remains largely unknown. We obtained time series of X-ray tomography images of dust-contaminated samples undergoing dry snow metamorphism at around-2C. They provide the first observational evidence that temperature gradient metamorphism induces dust particle motion in snow, while no movement is observed under isothermal conditions. Under temperature gradient metamorphism, dust particles can enter the ice matrix due to sublimation-condensation processes and spread down mainly by falling into the pore space. Overall, such motions might reduce the radiative impact of dust in snow, in particular in arctic regions where temperature gradient metamorphism prevails. © 2018 The Author(s). |
| 语种 | 英语 |
| 来源期刊 | The Cryosphere
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/118841 |
| 作者单位 | Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Centre d'Études de la Neige, Grenoble, France; Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, 38000, France; Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR, Grenoble, 38000, France |
| 推荐引用方式 GB/T 7714 | Hagenmuller P.,Flin F.,Dumont M.,et al. Motion of dust particles in dry snow under temperature gradient metamorphism[J],2019,13(9). |
| APA | Hagenmuller P..,Flin F..,Dumont M..,Tuzet F..,Peinke I..,...&Charrier P..(2019).Motion of dust particles in dry snow under temperature gradient metamorphism.The Cryosphere,13(9). |
| MLA | Hagenmuller P.,et al."Motion of dust particles in dry snow under temperature gradient metamorphism".The Cryosphere 13.9(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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