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Modeling and Parameterization of Near-Source Diffusion in Weak Winds
Publisher: American Meteorological Society
Abstract: A critical assessment is made of several different approaches that can be used for modeling near-source diffusion in weak winds, including the calm condition. For the convective boundary layer, the statistical theory ...
Finite-Difference Errors in Estimation of Gradients in the Atmospheric Surface Layer
Publisher: American Meteorological Society
Abstract: Errors associated with the linear and the logarithmic finite-difference approximations of gradients in the surface layer are computed using the well-known Monin-Obukhov flux-profile relations. It is shown that while the ...
Vertical Dispersion from Surface and Elevated Releases: An Investigation of a Non-Gaussian Plume Model
Publisher: American Meteorological Society
Abstract: The vertical diffusion of a passive tracer released from surface and elevated sources in a neutrally stratified boundary layer has been studied by comparing field and laboratory experiments with a non-Gaussian K-theory ...
A Laboratory Study of the Urban Heat Island in a Calm and Stably Stratified Environment. Part I: Temperature Field
Publisher: American Meteorological Society
Abstract: An extensive and systematic water-tank study was performed to simulate the urban heat island under a calm and stably stratified environment. The objective was to examine the mean-temperature field, mixing height, and ...
A Laboratory Study of the Urban Heat Island in a Calm and Stably Stratified Environment. Part II: Velocity Field
Publisher: American Meteorological Society
Abstract: A fully turbulent, low-aspect-ratio buoyant plume with no initial momentum under calm and stably stratified conditions is produced in a convection tank. The plume is generated by a circular heat island at the bottom of the ...
Urban Modification of Thunderstorms: An Observational Storm Climatology and Model Case Study for the Indianapolis Urban Region
Publisher: American Meteorological Society
Abstract: radar-based climatology of 91 unique summertime (May 2000?August 2009) thunderstorm cases was examined over the Indianapolis, Indiana, urban area. The study hypothesis is that urban regions alter the intensity and ...