DOI: 10.5194/hess-22-5191-2018
论文题名: Breeze effects at a large artificial lake: Summer case study
作者: Iakunin M. ; Salgado R. ; Potes M.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期: 10 起始页码: 5191
结束页码: 5210
语种: 英语
Scopus关键词: Atmospheric humidity
; Lakes
; Air temperature
; Artificial reservoirs
; Atmospheric layers
; Atmospheric model
; Atmospheric variables
; Breeze circulation
; Fresh water lakes
; Natural laboratories
; Reservoirs (water)
; air temperature
; air-sea interaction
; atmospheric modeling
; freshwater environment
; lacustrine environment
; land breeze
; relative humidity
; reservoir
; sea breeze
; summer
; Portugal
; Western Europe
英文摘要: Natural lakes and big artificial reservoirs can affect the weather regime of surrounding areas but, usually, consideration of all aspects of this impact and their quantification is a difficult task. The Alqueva reservoir, the largest artificial lake in western Europe, located on the south-east of Portugal, was filled in 2004. It is a large natural laboratory that allows the study of changes in surface and in landscape and how they affect the weather in the region. This paper is focused on a 3-day case study, 22-24 July 2014, during which an intensive observation campaign was carried out. In order to quantify the breeze effects induced by the Alqueva reservoir, two simulations with the mesoscale atmospheric model Meso-NH coupled to the FLake freshwater lake model has been performed. The difference between the two simulations lies in the presence or absence of the reservoir on the model surface. Comparing the two simulation datasets, with and without the reservoir, net results of the lake impact were obtained. Magnitude of the impact on air temperature, relative humidity, and other atmospheric variables are shown. The clear effect of a lake breeze (5-7 m s-1) can be observed during daytime on distances up to 6 km away from the shores and up to 300 m above the surface. The lake breeze system starts to form at 09:00 UTC and dissipates at 18:00-19:00 UTC with the arrival of a larger-scale Atlantic breeze. The descending branch of the lake breeze circulation brings dry air from higher atmospheric layers (2-2.5 km) and redistributes it over the lake. It is also shown that despite its significant intensity the effect is limited to a couple of kilometres away from the lake borders. © Author(s) 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163176
Appears in Collections: 气候变化与战略
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作者单位: Iakunin, M., Department of Physics, ICT, Institute of Earth Sciences, University of Évora, Évora, 7000, Portugal; Salgado, R., Department of Physics, ICT, Institute of Earth Sciences, University of Évora, Évora, 7000, Portugal; Potes, M., Department of Physics, ICT, Institute of Earth Sciences, University of Évora, Évora, 7000, Portugal
Recommended Citation:
Iakunin M.,Salgado R.,Potes M.. Breeze effects at a large artificial lake: Summer case study[J]. Hydrology and Earth System Sciences,2018-01-01,22(10)