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DOI | 10.1175/JAS-D-17-0112.1 |
The Effect of Ice Nuclei Efficiency on Arctic Mixed-Phase Clouds from Large-Eddy Simulations | |
Fu, Shizuo; Xue, Huiwen | |
2017-12-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The effects of ice nuclei (IN) efficiency on the persistent ice formation in Arctic mixed-phase clouds (AMCs) are investigated using a large-eddy simulation model, coupled to a bin microphysics scheme with a prognostic IN formulation. In the three cases where the IN efficiency is high, ice formation and IN depletion are fast. When the IN concentration is 1 and 10 g(-1), IN are completely depleted and the cloud becomes purely liquid phase before the end of the 24-h simulation. When the IN concentration is 100 g(-1), the IN supply is sufficient but the liquid water is completely consumed so that the cloud dissipates quickly. In the three cases when the IN efficiency is low, ice formation is negligible in the first several hours but becomes significant as the temperature is decreased through longwave cooling. Before the end of the simulation, the cloud is in mixed phase when the IN concentration is 1 and 10 g(-1) but dissipates when the IN concentration is 100 g(-1). In the case where two types of IN are considered, ice formation persists throughout the simulation. Analysis shows that as the more efficient IN are continuously removed through ice formation, the less efficient IN gradually nucleate more ice crystals because the longwave cooling decreases the cloud temperature. This mechanism is further illustrated with a simple model. These results indicate that a spectrum of IN efficiency is necessary to maintain the persistent ice formation in AMCs. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427864800001 |
WOS关键词 | MINERAL DUST ; NUCLEATION ; IMMERSION ; STRATOCUMULUS ; PARAMETERIZATION ; REPRESENTATION ; SENSITIVITY ; PARTICLES ; RADIATION ; SURFACE |
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/29361 |
专题 | 地球科学 |
作者单位 | Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Fu, Shizuo,Xue, Huiwen. The Effect of Ice Nuclei Efficiency on Arctic Mixed-Phase Clouds from Large-Eddy Simulations[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(12). |
APA | Fu, Shizuo,&Xue, Huiwen.(2017).The Effect of Ice Nuclei Efficiency on Arctic Mixed-Phase Clouds from Large-Eddy Simulations.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(12). |
MLA | Fu, Shizuo,et al."The Effect of Ice Nuclei Efficiency on Arctic Mixed-Phase Clouds from Large-Eddy Simulations".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.12(2017). |
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