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DOI | 10.1088/1748-9326/aa5ba4 |
Enhanced humidity pockets originating in the mid boundary layer as a mechanism of cloud formation below the lifting condensation level | |
Hirsch, Eitan1,2; Koren, Ilan1; Altaratz, Orit1; Levin, Zev3; Agassi, Eyal2 | |
2017-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | A ground-based field campaign was conducted during the summer of 2011, 10 km east of the Israeli coast, aimed at studying small, warm convective clouds. During the campaign, clouds were detected on days that were predicted to be cloud-free by standard forecasting methods. Moreover, the clouds' bases were often much lower than the estimated lifting condensation level. Detailed air parcel model simulations revealed that such small non-buoyant clouds can form only if the convective motion is driven by perturbations in the relative humidity in the middle of the boundary layer, rather than by temperature perturbations near the surface. Furthermore, cloud base height exhibited weak sensitivity to the initial elevation of the parcel, suggesting that it serves as an accumulation point for many relative-humidity-perturbed thermodynamic trajectories. Such a mechanism is likely to be common under atmospheric conditions of a hot and humid boundary layer capped by a strong inversion layer. |
英文关键词 | small clouds humidity perturbations cloud formation mechanism |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395790900002 |
WOS关键词 | SHALLOW CUMULUS CLOUDS ; MASS FLUX FRAMEWORK ; TEMPERATURE ; VARIABILITY ; MODEL |
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/37635 |
专题 | 气候变化 |
作者单位 | 1.Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel; 2.Israel Inst Biol Res, Dept Environm Phys, Ness Ziona, Israel; 3.Tel Aviv Univ, Dept Geosci, Tel Aviv, Israel |
推荐引用方式 GB/T 7714 | Hirsch, Eitan,Koren, Ilan,Altaratz, Orit,et al. Enhanced humidity pockets originating in the mid boundary layer as a mechanism of cloud formation below the lifting condensation level[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(2). |
APA | Hirsch, Eitan,Koren, Ilan,Altaratz, Orit,Levin, Zev,&Agassi, Eyal.(2017).Enhanced humidity pockets originating in the mid boundary layer as a mechanism of cloud formation below the lifting condensation level.ENVIRONMENTAL RESEARCH LETTERS,12(2). |
MLA | Hirsch, Eitan,et al."Enhanced humidity pockets originating in the mid boundary layer as a mechanism of cloud formation below the lifting condensation level".ENVIRONMENTAL RESEARCH LETTERS 12.2(2017). |
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