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DOI | 10.5194/acp-17-10733-2017 |
Direct molecular-level characterization of different heterogeneous freezing modes on mica - Part 1 | |
Abdelmonem, Ahmed | |
2017-09-13 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | The mechanisms behind heterogeneous ice nucleation are of fundamental importance to the prediction of the occurrence and properties of many cloud types, which influence climate and precipitation. Aerosol particles act as cloud condensation and freezing nuclei. The surface-water interaction of an ice nucleation particle plays a major, not well explored, role in its ice nucleation ability. This paper presents a real-time molecular-level comparison of different freezing modes on the surface of an atmospherically relevant mineral surface (mica) under varying supersaturation conditions using second-harmonic generation spectroscopy. Two sub-deposition nucleation modes were identified (one-and two-stage freezing). The nonlinear signal at the water-mica interface was found to drop following the formation of a thin film on the surface regardless of (1) the formed phase (liquid or ice) and (2) the freezing path (one or two step), indicating similar molecular structuring. The results also revealed a transient phase of ice at water-mica interfaces during freezing, which has a lifetime of around 1 min. Such information will have a significant impact on climate change, weather modification, and the tracing of water in hydrosphere studies. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416087300001 |
WOS关键词 | SUM-FREQUENCY GENERATION ; SURFACE 2ND-HARMONIC GENERATION ; AIR-WATER-INTERFACE ; ICE-NUCLEATION ; CHARGED INTERFACE ; ORIENTATION ; POLARIZATION ; CRYSTALS ; GROWTH ; SITES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/30919 |
专题 | 地球科学 |
作者单位 | KIT, Inst Meteorol & Climate Res Atmospher Aerosol Res, D-76344 Eggenstein Leopoldshafen, Germany |
推荐引用方式 GB/T 7714 | Abdelmonem, Ahmed. Direct molecular-level characterization of different heterogeneous freezing modes on mica - Part 1[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(17). |
APA | Abdelmonem, Ahmed.(2017).Direct molecular-level characterization of different heterogeneous freezing modes on mica - Part 1.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(17). |
MLA | Abdelmonem, Ahmed."Direct molecular-level characterization of different heterogeneous freezing modes on mica - Part 1".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.17(2017). |
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