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DOI | 10.1175/JAS-D-16-0139.1 |
Energetics of Deep Alpine Valleys in Pooling and Draining Configurations | |
Arduini, Gabriele1,2; Chemel, Charles1,3; Staquet, Chantal2 | |
2017-07-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | England; France |
英文摘要 | The Weather Research and Forecasting Model is used to investigate the nocturnal atmospheric boundary layer in a valley that opens either on a wider valley (draining configuration) or on a narrower valley (pooling configuration). One draining case and three weak to strong pooling cases are considered. Results show that the structure of the nocturnal boundary layer is substantially different for the draining and pooling configurations. Greater pooling corresponds with a deeper and colder boundary layer. Down-valley winds are weaker for pooling and draining configurations than in an equivalent valley opening directly on a plain. For the strong pooling case, an up-valley flow develops from the narrower to the wider valley during the evening transition, affecting the mass budget of the wider valley during that period. Considering the heat budget of the valley system, the contribution of the diabatic processes, when appropriately weighted, hardly varies along the valley axis. Conversely, the contribution of advection varies along the valley axis: it decreases for a pooling configuration and increases for a draining configuration. Consequently, for a pooling configuration, the heat transfer between the valley and the plain is reduced, thereby increasing the temperature difference between them. For the strong pooling case, this temperature difference can be explained by the valley-volume effect once the down-valley flow has developed. This occurs in a valley when the "extra" heat loss within the valley due to the surface sensible heat flux balances the heat input due to advection. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405556700001 |
WOS关键词 | COLD-AIR POOL ; BOUNDARY-LAYER EVOLUTION ; MOUNTAINOUS TERRAIN ; CANYONLAND BASIN ; DOWNSLOPE FLOWS ; SLOPE WINDS ; PART I ; MODEL ; HEAT ; MECHANISMS |
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/29611 |
专题 | 地球科学 |
作者单位 | 1.Univ Hertfordshire, Ctr Atmospher & Instrumentat Res, Hatfield, Herts, England; 2.Univ Grenoble Alpes, CNRS, LEGI, Grenoble, France; 3.Univ Hertfordshire, Natl Ctr Atmospher Sci, Hatfield, Herts, England |
推荐引用方式 GB/T 7714 | Arduini, Gabriele,Chemel, Charles,Staquet, Chantal. Energetics of Deep Alpine Valleys in Pooling and Draining Configurations[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(7). |
APA | Arduini, Gabriele,Chemel, Charles,&Staquet, Chantal.(2017).Energetics of Deep Alpine Valleys in Pooling and Draining Configurations.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(7). |
MLA | Arduini, Gabriele,et al."Energetics of Deep Alpine Valleys in Pooling and Draining Configurations".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.7(2017). |
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