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Response of a Stably Stratified Atmosphere to Low-Level Heating— An Application to the Heat Island Problem
Publisher: American Meteorological Society
Abstract: Two-dimensional airflow characteristics past a heat island are investigated using both a linear analytic model and a numerical model in the context of the response of a stably stratified atmosphere to specified low-level ...
A Physically Based Autoconversion Parameterization
Publisher: American Meteorological Society
Abstract: AbstractA physically based parameterization for the autoconversion is derived by solving the stochastic collection equation (SCE) with an approximated collection kernel. The collection kernel is constructed using the ...
An Arctic Hurricane over the Bering Sea
Publisher: American Meteorological Society
Abstract: A mesoscale ?arctic hurricane? developed over the western Bering Sea on 7 March 1977 and traveled eastward parallel to the ice edge along a zone of large sea surface temperature gradient. Satellite imagery reveals spiral ...
Using the (3N)-Dimensional Generalized Lorenz Systems as a Testbed for Data Assimilation: The Ensemble Kalman Filter
Publisher: American Meteorological Society
Quantitative Analysis of Factors Contributing to Urban Heat Island Intensity
Publisher: American Meteorological Society
Abstract: his study identifies causative factors of the urban heat island (UHI) and quantifies their relative contributions to the daytime and nighttime UHI intensities using a mesoscale atmospheric model that includes a single-layer ...
Daytime Local Circulations and Their Interactions in the Seoul Metropolitan Area
Publisher: American Meteorological Society
Abstract: aytime local circulations and their interactions in the Seoul, South Korea, metropolitan area are investigated using a high-resolution mesoscale model. It is found that the urban-breeze circulation interacts strongly with ...
Weakly Nonlinear Response of a Stably Stratified Atmosphere to Diabatic Forcing in a Uniform Flow
Publisher: American Meteorological Society
Abstract: The weakly nonlinear response of a two-dimensional stably stratified atmosphere to prescribed diabatic heating in a uniform flow is investigated analytically using perturbation expansion in a small value of the nonlinearity ...
A Large-Eddy Simulation Study of Thermal Effects on Turbulence Coherent Structures in and above a Building Array
Publisher: American Meteorological Society
Abstract: hermal effects on turbulent flow in and above a cubical building array are numerically investigated using the parallelized large-eddy simulation model (PALM). Two cases (no heating and bottom heating) are simulated and are ...
A Numerical Study of Flow and Pollutant Dispersion Characteristics in Urban Street Canyons
Publisher: American Meteorological Society
Abstract: The flow and pollutant dispersion in urban street canyons are investigated using a two-dimensional numerical model with the k?ε turbulent closure scheme. It is shown that the flow field is characterized mainly by the number ...
Effects of Nonlinearity on the Atmospheric Flow Response to Low-Level Heating in a Uniform Flow
Publisher: American Meteorological Society
Abstract: Effects of nonlinearity on the stably stratified atmospheric response to prescribed low-level heating in a uniform flow are investigated through nondimensional numerical model experiments over a wide range of the nonlinearity ...