OBSERVATIONS AND MODELING OF THE INTERNAL BOUNDARY LAYER ON THE SHORELINE OF LARGE AQUATIC SYSTEMS
DOI:
https://doi.org/10.5902/2179460X20238Keywords:
Atmospheric stability. Wind profile. Planetary boundary layer. Hydroelectric reservoirs.Abstract
The determination of the spatial extent of the internal boundary layer (IBL) across a step change in surface roughness and surface heat flux and temperature is an important environmental aspect to the operation of industries, fossil-fuel, nuclear and wind power plants. The IBL of the land-water transition zone, such as in coastal regions, lakes and reservoirs, is strongly influenced by surface properties, as the roughness and stability change considerably within this zone. An observational study was conducted to measure meteorological properties near a large tropical reservoir and investigate the IBL at the water-land transition. A 42 m height meteorological mast was instrumented with sonic wind anemometers, air temperature and relative humidity sensors at 3, 10, 20 and 40 m height. Comparisons of the log profile model with the Monin-Obukhov similarity theory (MOS) and the observed wind profiles, shown that the MOS estimated the wind profile more accurately, especially if winds were from water to land.Downloads
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