Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-6761-2018 |
Quantifying the effect of aerosol on vertical velocity and effective terminal velocity in warm convective clouds | |
Dagan, Guy; Koren, Ilan; Altaratz, Orit | |
2018-05-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:9页码:6761-6769 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | Better representation of cloud-aerosol interactions is crucial for an improved understanding of natural and anthropogenic effects on climate. Recent studies have shown that the overall aerosol effect on warm convective clouds is non-monotonic. Here, we reduce the system' dimensions to its center of gravity (COG), enabling distillation and simplification of the overall trend and its temporal evolution. Within the COG framework, we show that the aerosol effects are nicely reflected by the interplay of the system's characteristic vertical velocities, namely the updraft (omega) and the effective terminal velocity (eta). The system's vertical velocities can be regarded as a sensitive measure for the evolution of the overall trends with time. Using a bin-microphysics cloud-scale model, we analyze and follow the trends of the aerosol effect on the magnitude and timing of omega and eta, and therefore the overall vertical COG velocity. Large eddy simulation (LES) model runs are used to upscale the analyzed trends to the cloud-held scale and study how the aerosol effects on the temporal evolution of the field' thermodynamic properties are reflected by the interplay between the two velocities. Our results suggest that aerosol effects on air vertical motion and droplet mobility imply an effect on the way in which water is distributed along the atmospheric column. Moreover, the interplay between omega and eta predicts the overall trend of the field's thermodynamic instability. These factors have an important effect on the local energy balance. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432315600001 |
WOS关键词 | CONDENSATION NUCLEI ; AIR-POLLUTION ; RAIN ; MICROPHYSICS ; FIELDS ; SIMULATION ; GRAVITY ; MODEL ; MASS ; PRECIPITATION |
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/22768 |
专题 | 地球科学 |
作者单位 | Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel |
推荐引用方式 GB/T 7714 | Dagan, Guy,Koren, Ilan,Altaratz, Orit. Quantifying the effect of aerosol on vertical velocity and effective terminal velocity in warm convective clouds[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(9):6761-6769. |
APA | Dagan, Guy,Koren, Ilan,&Altaratz, Orit.(2018).Quantifying the effect of aerosol on vertical velocity and effective terminal velocity in warm convective clouds.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(9),6761-6769. |
MLA | Dagan, Guy,et al."Quantifying the effect of aerosol on vertical velocity and effective terminal velocity in warm convective clouds".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.9(2018):6761-6769. |
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