Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-019-04793-2 |
Climatology and dynamics of the link between dry intrusions and cold fronts during winter, Part II: Front-centred perspective | |
Raveh-Rubin, Shira1; Catto, Jennifer L.2 | |
2019-08-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:1893-1909 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel; England |
英文摘要 | The conceptual picture of an extratropical cyclone typically includes a cold front and a dry intrusion (DI) behind it. By objectively identifying fronts and DIs in ECMWF ERA-Interim data for 1979-2014, Part I quantified the climatological relationship between cold fronts and DIs. Driven by the finding that front intensity and frontal precipitation are enhanced in the presence of DIs, here we employ a front-centred perspective to focus on the dynamical and thermodynamical environment of cold fronts with and without DIs in the Northern Hemisphere winter. Distinguishing between trailing fronts (that connect to a parent cyclone) and isolated fronts, examples of DIs behind each type illustrate the baroclinic environment of the trailing front, and the lack of strong temperature gradients across the isolated front. Composite analyses of North Atlantic and North Pacific fronts outline the major differences in the presence of DIs, compared to similar fronts but without DIs in their vicinity. The magnitude and spatial structure of the modification by DIs depends on the front intensity. Yet, generally with DIs, trailing fronts occur with stronger SLP dipole, deeper upper-tropospheric trough, stronger 10-m wind gusts, enhanced ocean sensible and latent heat fluxes in the cyclone cold sector and heavier precipitation. Isolated weak fronts exhibit similar behaviour, with different spatial structure. This study highlights the central role of DIs for shaping the variability of fronts and their associated environment and impact. |
英文关键词 | Dry intrusions Frontogenesis Extratropical cyclones Subtropical fronts Composite analysis Cold sector |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000475558800039 |
WOS关键词 | WARM CONVEYOR BELTS ; LARGE-SCALE WIND ; EXTRATROPICAL CYCLONES ; PRECIPITATION EXTREMES ; MESOSCALE ; IMPACT ; INTENSIFICATION ; CLASSIFICATION ; IDENTIFICATION ; ORIGIN |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/185433 |
专题 | 气候变化 |
作者单位 | 1.Weizmann Inst Sci, Dept Earth & Planetary Sci, Rehovot, Israel; 2.Univ Exeter, Coll Engn Math & Phys Sci, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Raveh-Rubin, Shira,Catto, Jennifer L.. Climatology and dynamics of the link between dry intrusions and cold fronts during winter, Part II: Front-centred perspective[J]. CLIMATE DYNAMICS,2019,53:1893-1909. |
APA | Raveh-Rubin, Shira,&Catto, Jennifer L..(2019).Climatology and dynamics of the link between dry intrusions and cold fronts during winter, Part II: Front-centred perspective.CLIMATE DYNAMICS,53,1893-1909. |
MLA | Raveh-Rubin, Shira,et al."Climatology and dynamics of the link between dry intrusions and cold fronts during winter, Part II: Front-centred perspective".CLIMATE DYNAMICS 53(2019):1893-1909. |
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