Knowledge Resource Center for Ecological Environment in Arid Area
Efficiency of the deposition mode ice nucleation on mineral dust particles | |
Moehler, O.; Field, P. R.; Connolly, P.; Benz, S.; Saathoff, H.; Schnaiter, M.; Wagner, R.; Cotton, R.; Kraemer, M.; Mangold, A.; Heymsfield, A. J. | |
通讯作者 | Moehler, O. |
来源期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
出版年 | 2006 |
卷号 | 6页码:3007-3021 |
英文摘要 | The deposition mode ice nucleation efficiency of various dust aerosols was investigated at cirrus cloud temperatures between 196 and 223 K using the aerosol and cloud chamber facility AIDA (Aerosol Interaction and Dynamics in the Atmosphere). Arizona test dust (ATD) as a reference material and two dust samples from the Takla Makan desert in Asia (AD1) and the Sahara (SD2) were used for the experiments at simulated cloud conditions. The dust particle sizes were almost lognormally distributed with mode diameters between 0.3 and 0.5 mu m and geometric standard deviations between 1.6 and 1.9. Deposition ice nucleation was most efficient on ATD particles with ice-active particle fractions of about 0.6 and 0.8 at an ice saturation ratio S(i) < 1.15 and temperatures of 223 and 209 K, respectively. No significant change of the ice nucleation efficiency was found in up to three subsequent cycles of ice activation and evaporation with the same ATD aerosol. This indicates that the phenomenon of preactivation does not apply to ATD particles. The desert dust samples SD2 and AD1 showed a significantly lower fraction of active deposition nuclei, about 0.25 at 223 K and S(i) < 1.35. For all samples the ice activated aerosol fraction could be approximated by an exponential equation as function of Si. This indicates that deposition ice nucleation on mineral particles may not be treated in the same stochastic sense as homogeneous freezing. The suggested formulation of ice activation spectra may be used to calculate the formation rate of ice crystals in models, if the number concentration of dust particles is known. More experimental work is needed to quantify the variability of the ice activation spectra as function of the temperature and dust particle properties. |
类型 | Article |
语种 | 英语 |
国家 | Germany ; England ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000239176200002 |
WOS关键词 | OROGRAPHIC WAVE CLOUDS ; AEROSOL CHAMBER AIDA ; SUPERCOOLED WATER ; RELATIVE-HUMIDITY ; CIRRUS CRYSTALS ; DROPLETS ; PARAMETERIZATION ; TEMPERATURES ; PRESSURES ; SURFACES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/150811 |
作者单位 | (1)Forschungszentrum Karlsruhe, Inst Meteorol & Climate Res, Karlsruhe, Germany;(2)Met Off, Exeter, Devon, England;(3)Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester, Lancs, England;(4)Forschungszentrum Julich, Inst Chem & Dynam Geosphare ICG 1, Julich, Germany;(5)Natl Ctr Atmospher Res, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Moehler, O.,Field, P. R.,Connolly, P.,et al. Efficiency of the deposition mode ice nucleation on mineral dust particles[J],2006,6:3007-3021. |
APA | Moehler, O..,Field, P. R..,Connolly, P..,Benz, S..,Saathoff, H..,...&Heymsfield, A. J..(2006).Efficiency of the deposition mode ice nucleation on mineral dust particles.ATMOSPHERIC CHEMISTRY AND PHYSICS,6,3007-3021. |
MLA | Moehler, O.,et al."Efficiency of the deposition mode ice nucleation on mineral dust particles".ATMOSPHERIC CHEMISTRY AND PHYSICS 6(2006):3007-3021. |
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