Pollutant Dispersion in a Developing Valley Cold-Air Pool
نویسندگان
چکیده
منابع مشابه
Pollutant Dispersion in a Developing Valley Cold - Air Pool
Pollutants are trapped and accumulate within cold-air pools, thereby affecting air 5 quality. A numerical model is used to quantify the role of cold-air-pooling processes in 6 the dispersion of air pollution in a developing cold-air pool within an alpine valley under 7 decoupled stable conditions. Results indicate that the negatively buoyant downslope flows 8 transport and mix pollutants into t...
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Downslope flows and regions of enhanced cooling have important impacts on society and the environment. Parameterisation of these often subgrid-scale phenomena in numerical models requires a sound understanding of the underlying physical processes, which has been the overarching aim of this work. A numerical model has been used to characterise the development of a region of enhanced cooling in a...
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A numerical model has been used to characterize the development of a region of 6 enhanced cooling, in an alpine valley with a width of order 10 km, under decoupled stable 7 conditions. The region of enhanced cooling develops largely as a region of relatively dry 8 air that partitions the valley atmosphere dynamics into two volumes, with air flows partially 9 trapped within the valley by a devel...
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Turbulent erosion has been proposed as a major mechanism for removing wintertime cold-air pools (CAPs) from basins and valleys. The time scales involved in this erosion process, which are of great interest for winter weather forecasting, have not been studied systematically in the past. In this short contribution, a semi-analytical model is developed to estimate the time required for the dissip...
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In mountainous areas, cold air drainage from high to low elevations has pronounced effects on local temperature, which is a critical driver of many ecosystem processes, including carbon uptake and storage. Here, we leverage new approaches for interpreting ecosystem carbon flux observations in complex terrain to quantify the links between macro-climate condition, drainage flows, local microclima...
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ژورنال
عنوان ژورنال: Boundary-Layer Meteorology
سال: 2014
ISSN: 0006-8314,1573-1472
DOI: 10.1007/s10546-014-9984-5