scholarly journals A numerical investigation of the influence of land-sea breeze on the atmospheric effluents released at a coastal site

MAUSAM ◽  
2022 ◽  
Vol 46 (4) ◽  
pp. 393-400
Author(s):  
R. VENKATESAN
Keyword(s):  
Boundary Layer ◽  
Sea Breeze ◽  
Boussinesq Approximation ◽  
Internal Boundary Layer ◽  
Momentum Equation ◽  
Internal Boundary ◽  
Sea Breezes ◽  
Hydrostatic Approximation ◽  
Continuous Point ◽  
Horizontal Momentum

ABSTRACT. Mesoscale features of a coastal atmospheric boundary layer such as the land-sea circulation and the thermal internal boundary layer (TIBL) structure have been simulated using a two-dimensional numerical boundary layer model. Using Boussinesq approximation for horizontal momentum equations and hydrostatic approximation for vertical momentum equation the model solves the 'shallow water' equations year over a grid domain 80 km length on either side of the coastline and 2 km height. The influence of the land-sea breezes on the dispersion of pollutants released from a continuous point source located at the roast has been studied. The fumigation of pollutants from an offshore source into TIBL over the land has also been illustrated. The limitations associated with the model are also discussed.    

scholarly journals Study of the Thermal Internal Boundary Layer in Sea Breeze Conditions Using Different Parameterizations: Application of the WRF Model in the Greater Vitória Region

2016 ◽  
Vol 31 (4 suppl 1) ◽  
pp. 593-609 ◽  
Author(s):  
Nadir Salvador ◽  
◽  
Ayres G. Loriato ◽  
Alexandre Santiago ◽  
Taciana T.A. Albuquerque ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Land Surface ◽  
Wrf Model ◽  
Coastal Region ◽  
Sea Breeze ◽  
Internal Boundary Layer ◽  
Internal Boundary ◽  
Surface Model ◽  
Thermal Internal Boundary Layer ◽  
Local Closure

Abstract In the present study, the physical parameterizations of the Weather Research and Forecasting (WRF) model are verified for making accurate inferences about the dynamics of the Thermal Internal Boundary Layer (TIBL) generated by sea breeze in an urban center with an island in a bay along a coastal region with rugged topography. The simulations were performed using parameterizations from Yonsei University (YSU), Mellor-Yamada-Janjic (MYJ) and Asymmetric Convective Model version 2 (ACM2) for the atmospheric boundary layer (ABL) and Noah and Rapid Update Cycle (RUC) for the Land Surface Model (LSM). The data inferred by the WRF model were compared with those obtained by a Surface Meteorological Station (SMS) and by measurements generated using Light Detection and Ranging (LIDAR), Sonic Detection and Ranging (SODAR) and radiosonde. The simulations showed that although the object of this research was a region with high geographical complexity, the YSU parameterization set (non-local closure) for the ABL and the Noah parameterization for the LSM presented satisfactory results in determining ABL height generated by the sea breeze on the day in question.

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