Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/2015JD023270 |
Effects of aerosol sources and chemical compositions on cloud drop sizes and glaciation temperatures | |
Zipori, Assaf1; Rosenfeld, Daniel1; Tirosh, Ofir1; Teutsch, Nadya2; Erel, Yigal1 | |
通讯作者 | Zipori, Assaf |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2015 |
卷号 | 120期号:18页码:9653-9669 |
英文摘要 | The effect of aerosols on cloud properties, such as its droplet sizes and its glaciation temperatures, depends on their compositions and concentrations. In order to examine these effects, we collected rain samples in northern Israel during five winters (2008-2011 and 2013) and determined their chemical composition, which was later used to identify the aerosols’ sources. By combining the chemical data with satellite-retrieved cloud properties, we linked the aerosol types, sources, and concentrations with the cloud glaciation temperatures (T-g). The presence of dust increased T-g from -26 degrees C to -12 degrees C already at relatively low dust concentrations. This result is in agreement with the conventional wisdom that desert dust serves as good ice nuclei (INs). With higher dust concentrations, T-g saturated at -12 degrees C, even though cloud droplet sizes decreased as a result of the cloud condensation nucleating (CCN) activity of the dust. Marine air masses also encouraged freezing, but in this case, freezing was enhanced by the larger cloud droplet sizes in the air masses (caused by low CCN concentrations) and not by IN concentrations or by aerosol type. An increased fraction of anthropogenic aerosols in marine air masses caused a decrease in T-g, indicating that these aerosols served as poor IN. Anthropogenic aerosols reduced cloud droplet sizes, which further decreased T-g. Our results could be useful in climate models for aerosol-cloud interactions, as we investigated the effects of aerosols of different sources on cloud properties. Such parameterization can simplify these models substantially. |
英文关键词 | precipitation chemistry aerosol-cloud interaction cloud glaciation |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000363425900036 |
WOS关键词 | SECONDARY ICE PARTICLES ; MIXED-PHASE CLOUDS ; ATMOSPHERIC AEROSOLS ; CONVECTIVE CLOUDS ; TRACE-ELEMENTS ; MINERAL DUST ; PB ISOTOPES ; SEA SPRAY ; DEAD-SEA ; PRECIPITATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
来源机构 | Hebrew University of Jerusalem |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/188694 |
作者单位 | 1.Hebrew Univ Jerusalem, Fredy & Nadine Herrmann Inst Earth Sci, Jerusalem, Israel; 2.Geol Survey Israel, IL-95501 Jerusalem, Israel |
推荐引用方式 GB/T 7714 | Zipori, Assaf,Rosenfeld, Daniel,Tirosh, Ofir,et al. Effects of aerosol sources and chemical compositions on cloud drop sizes and glaciation temperatures[J]. Hebrew University of Jerusalem,2015,120(18):9653-9669. |
APA | Zipori, Assaf,Rosenfeld, Daniel,Tirosh, Ofir,Teutsch, Nadya,&Erel, Yigal.(2015).Effects of aerosol sources and chemical compositions on cloud drop sizes and glaciation temperatures.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(18),9653-9669. |
MLA | Zipori, Assaf,et al."Effects of aerosol sources and chemical compositions on cloud drop sizes and glaciation temperatures".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.18(2015):9653-9669. |
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