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DOI | 10.1175/JAS-D-16-0313.1 |
Aerosol- and Droplet-Dependent Contact Freezing: Parameterization Development and Case Study | |
Hande, Luke B.; Hoose, C.; Barthlott, C. | |
2017-07-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | A parameterization for contact freezing is presented that combines theoretical expressions for determining the collision efficiency with experimentally determined freezing efficiency results. The parameterization has dependencies on aerosol and cloud droplet physical properties, including electric charges, as well as ambient temperature and humidity. The highest freezing rate is obtained at large aerosol and large cloud droplet sizes, and at cold temperatures and low relative humidities, with typical dust aerosol and droplet properties. The number concentration of ice nucleating particles (INPs) in the contact freezing mode are generally lower than those in the immersion freezing or deposition nucleation mode; however, under certain conditions contact INP concentrations can exceed those of the other modes. The new parameterization is used in a high-resolution, semi-idealized simulation of a deep convective cloud, and a number of sensitivity studies are performed. Results indicate the greatest sensitivity is to the best-fit function to laboratory data. The simulations show that droplet properties and ambient relative humidity contribute significantly to contact freezing. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405556700007 |
WOS关键词 | HETEROGENEOUS ICE NUCLEATION ; MIXED-PHASE CLOUDS ; WATER DROPS ; PARTICLES ; NUCLEI ; DUST ; DISTRIBUTIONS ; SITE |
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/29638 |
专题 | 地球科学 |
作者单位 | Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Karlsruhe, Germany |
推荐引用方式 GB/T 7714 | Hande, Luke B.,Hoose, C.,Barthlott, C.. Aerosol- and Droplet-Dependent Contact Freezing: Parameterization Development and Case Study[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(7). |
APA | Hande, Luke B.,Hoose, C.,&Barthlott, C..(2017).Aerosol- and Droplet-Dependent Contact Freezing: Parameterization Development and Case Study.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(7). |
MLA | Hande, Luke B.,et al."Aerosol- and Droplet-Dependent Contact Freezing: Parameterization Development and Case Study".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.7(2017). |
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