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| DOI | 10.1029/2020GL089134 |
| Convective Invigoration Traced to Warm-Rain Microphysics | |
| Chua X.R.; Ming Y. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 卷号 | 47期号:23 |
| 英文摘要 | Aerosols are postulated to alter moist convection by increasing cloud droplet number concentration (Nd). Cloud-resolving model simulations of radiative-convective equilibrium show that higher Nd leads to stronger convective mass flux, seemingly in line with a hypothesis that links the convective invigoration to delayed rain formation allowing more cloud liquid condensate to be frozen. Yet, the invigoration is also present in an alternative model configuration with warm-rain microphysics only, suggesting that ice microphysics is not central to the phenomenon. The key dynamical mechanism lies in the different vertical distributions of the increases in water vapor condensation and in cloud liquid reevaporation, causing a dipole pattern favoring convection. This is further supported by a pair of mechanism-denial experiments in which an imposed weakening of cloud liquid reevaporation tends to mute invigoration. © 2020. The Authors. |
| 英文关键词 | Liquids; Cloud droplet number concentrations; Cloud-resolving model simulations; Convective mass flux; Dynamical mechanisms; Model configuration; Radiative-convective equilibrium; Vertical distributions; Water vapor condensation; Rain; aerosol composition; atmospheric convection; cloud droplet; cloud microphysics; condensate; condensation; rainfall; water vapor |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/169312 |
| 作者单位 | Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; Now at Centre for Climate Research Singapore, Singapore; Geophysical Fluid Dynamics Laboratory/NOAA, Princeton, NJ, United States |
| 推荐引用方式 GB/T 7714 | Chua X.R.,Ming Y.. Convective Invigoration Traced to Warm-Rain Microphysics[J],2020,47(23). |
| APA | Chua X.R.,&Ming Y..(2020).Convective Invigoration Traced to Warm-Rain Microphysics.Geophysical Research Letters,47(23). |
| MLA | Chua X.R.,et al."Convective Invigoration Traced to Warm-Rain Microphysics".Geophysical Research Letters 47.23(2020). |
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