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DOI | 10.5194/acp-18-17047-2018 |
The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds | |
Solomon, Amy1,2; de Boer, Gijs1,2; Creamean, Jessie M.1,2,3; McComiskey, Allison2; Shupe, Matthew D.1,2; Maahn, Maximilian1,2; Cox, Christopher1,2 | |
2018-12-03 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:23页码:17047-17059 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study investigates the interactions between cloud dynamics and aerosols in idealized large-eddy simulations (LES) of Arctic mixed-phase stratocumulus clouds (AMPS) observed at Oliktok Point, Alaska, in April 2015. This case was chosen because it allows the cloud to form in response to radiative cooling starting from a cloud-free state, rather than requiring the cloud ice and liquid to adjust to an initial cloudy state. Sensitivity studies are used to identify whether there are buffering feedbacks that limit the impact of aerosol perturbations. The results of this study indicate that perturbations in ice nucleating particles (INPs) dominate over cloud condensation nuclei (CCN) perturbations; i.e., an equivalent fractional decrease in CCN and INPs results in an increase in the cloud-top longwave cooling rate, even though the droplet effective radius increases and the cloud emissivity decreases. The dominant effect of ice in the simulated mixed-phase cloud is a thinning rather than a glaciation, causing the mixed-phase clouds to radiate as a grey body and the radiative properties of the cloud to be more sensitive to aerosol perturbations. It is demonstrated that allowing prognostic CCN and INPs causes a layering of the aerosols, with increased concentrations of CCN above cloud top and increased concentrations of INPs at the base of the cloud-driven mixed layer. This layering contributes to the maintenance of the cloud liquid, which drives the dynamics of the cloud system. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451920000002 |
WOS关键词 | PRECIPITATION ; MICROPHYSICS ; SURFACE ; ALBEDO ; SIMULATIONS ; POLLUTION ; FLUXES |
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/28369 |
专题 | 地球科学 |
作者单位 | 1.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 2.NOAA, Earth Syst Res Lab, Boulder, CO 80305 USA; 3.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Solomon, Amy,de Boer, Gijs,Creamean, Jessie M.,et al. The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(23):17047-17059. |
APA | Solomon, Amy.,de Boer, Gijs.,Creamean, Jessie M..,McComiskey, Allison.,Shupe, Matthew D..,...&Cox, Christopher.(2018).The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(23),17047-17059. |
MLA | Solomon, Amy,et al."The relative impact of cloud condensation nuclei and ice nucleating particle concentrations on phase partitioning in Arctic mixed-phase stratocumulus clouds".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.23(2018):17047-17059. |
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