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RISAn LES Study of the Impacts of Land Surface Heterogeneity on Dispersion in the Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: A systematic analysis of the impacts of heat patches and topographical features on the dispersion of passive materials in a shear-free convective boundary layer (CBL) was performed. Large eddy simulations and a Lagrangian ...
Comparative Evaluation of Eddy Exchange Coefficients for Strong and Weak Wind Stable Boundary Layer Modeling
Publisher: American Meteorological Society
Abstract: Five local K-closure formulations and a TKE closure were incorporated in a one-dimensional version of the Pielke?s model, and a comparative evaluation of the closure schemes was made for strong and weak wind stable boundary ...
Study of Regional-Scale Boundary Layer Characteristics over Northern India with a Special Reference to the Role of the Thar Desert in Regional-Scale Transport
Publisher: American Meteorological Society
Abstract: Extensive contrasts of land surface heterogeneities have a pivotal role in modulating boundary layer processes and consequently, the regional-scale dispersion of air pollutants. The Weather Research and Forecasting (WRF) ...
An Evaluation of the Scale at which Topographical Features Affect the Convective Boundary Layer Using Large Eddy Simulations
Publisher: American Meteorological Society
Abstract: The major objective of this study was to evaluate at which scale topography starts to significantly affect the mean characteristics and structure of turbulence in the convective boundary layer (CBL). The large eddy simulation ...
A Local Parameterization Scheme for σw under Stable Conditions
Publisher: American Meteorological Society
Abstract: Turbulence in stable conditions is local, that is, it is locally defined by small eddies. A local formulation for σw based on a level 2 approximation of Mellor and Yamada (1974) is proposed. The proposed formulation is ...
Idealized Study of Ocean Impacts on Tropical Cyclone Intensity Forecasts
Publisher: American Meteorological Society
Abstract: dealized coupled tropical cyclone (TC) simulations are conducted to isolate ocean impacts on intensity forecasts. A one-dimensional ocean model is embedded into the Hurricane Weather Research and Forecasting (HWRF) mesoscale ...
Impact of Physics Representations in the HWRFX on Simulated Hurricane Structure and Pressure–Wind Relationships
Publisher: American Meteorological Society
Abstract: series of idealized experiments with the NOAA Experimental Hurricane Weather Research and Forecasting Model (HWRFX) are performed to examine the sensitivity of idealized tropical cyclone (TC) intensification to various ...
Bhopal Gas Leak: A Numerical Investigation of the Prevailing Meteorological Conditions
Publisher: American Meteorological Society
Abstract: A three-dimensional mesoscale model was used to understand the meteorological conditions and the influence of the terrain on the local flow pattern during the Bhopal methyl isocyanate (MIC) gas leak. The study reveals that ...
Mean Structure of the Nocturnal Boundary Layer under Strong and Weak Wind Conditions: EPRI Case Study
Publisher: American Meteorological Society
Abstract: The major objective of this study was to analyze the mean structure and evolution of the nocturnal boundary layer (NBL) under strong and weak wind conditions. Meteorological data collected during the plume-validation ...
A Great Escape from the Bay of Bengal “Super Sapphire–Phailin” Tropical Cyclone: A Case of Improved Weather Forecast and Societal Response for Disaster Mitigation
Publisher: American Meteorological Society
Abstract: he very severe cyclonic storm (VSCS) ?Phailin (2013)? was the strongest cyclone that hit the eastern coast of the India Odisha state since the supercyclone of 1999. But the same story of casualties was not repeated as that ...