Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-11143-2019 |
Size-dependent ice nucleation by airborne particles during dust events in the eastern Mediterranean | |
Reicher, Naama1; Budke, Carsten2; Eickhoff, Lukas2; Raveh-Rubin, Shira1; Kaplan-Ashiri, Ifat3; Koop, Thomas2; Rudich, Yinon1 | |
2019-09-03 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:17页码:11143-11158 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel; Germany |
英文摘要 | The prediction of cloud ice formation in climate models remains a challenge, partly due to the complexity of ice-related processes. Mineral dust is a prominent aerosol in the troposphere and is an important contributor to ice nucleation in mixed-phase clouds, as dust can initiate ice heterogeneously at relatively low supercooling conditions. We characterized the ice nucleation properties of size-segregated mineral dust sampled during dust events in the eastern Mediterranean. The sampling site allowed us to compare the properties of airborne dust from several sources with diverse mineralogy that passed over different atmospheric paths. We focused on particles with six size classes determined by the Micro-Orifice Uniform Deposit Impactor ( MOUDI) cutoff sizes: 5.6, 3.2, 1.8, 1.0, 0.6 and 0.3 mu m. Ice nucleation experiments were conducted in the Weizmann Supercooled Droplets Observation on a Microarray (WIS-DOM) setup, whereby the particles are immersed in nanoliter droplets using a microfluidics technique. We observed that the activity of airborne particles depended on their size class; supermicron and submicron particles had different activities, possibly due to different composition. The concentrations of ice-nucleating particles and the density of active sites (n(s)) increased with the particle size and particle concentration. The supermicron particles in different dust events showed similar activity, which may indicate that freezing was dominated by common mineralogical components. Combining recent data of airborne mineral dust, we show that current predictions, which are based on surface-sampled natural dust or standard mineral dust, overestimate the activity of airborne dust, especially for the submicron class. Therefore, we suggest in-cluding information on particle size in order to increase the accuracy of ice formation modeling and thus weather and climate predictions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000484161200004 |
WOS关键词 | ATMOSPHERIC MINERAL DUST ; SAHARAN DUST ; DESERT DUST ; AFRICAN DUST ; CHEMICAL-COMPOSITION ; OPTICAL-PROPERTIES ; TIME-DEPENDENCE ; ACTIVE-SITES ; IMMERSION ; NUCLEI |
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/186929 |
专题 | 地球科学 |
作者单位 | 1.Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel; 2.Bielefeld Univ, Fac Chem, Univ Str 25, D-33615 Bielefeld, Germany; 3.Weizmann Inst Sci, Chem Res Support, IL-76100 Rehovot, Israel |
推荐引用方式 GB/T 7714 | Reicher, Naama,Budke, Carsten,Eickhoff, Lukas,et al. Size-dependent ice nucleation by airborne particles during dust events in the eastern Mediterranean[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(17):11143-11158. |
APA | Reicher, Naama.,Budke, Carsten.,Eickhoff, Lukas.,Raveh-Rubin, Shira.,Kaplan-Ashiri, Ifat.,...&Rudich, Yinon.(2019).Size-dependent ice nucleation by airborne particles during dust events in the eastern Mediterranean.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(17),11143-11158. |
MLA | Reicher, Naama,et al."Size-dependent ice nucleation by airborne particles during dust events in the eastern Mediterranean".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.17(2019):11143-11158. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论