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RISBridging the Gap Between Atmospheric Physics and Chemistry in Studies of Small-Scale Turbulence
Publisher: American Meteorological Society
Abstract: The current understanding of the influence of atmospheric turbulence on chemical reactions is briefly reviewed. The fundamentals of this influence and the consequences for the transport and mixing of the reactants are ...
Boundary Layer Characteristics over Homogeneous and Heterogeneous Surfaces Simulated by MM5 and DALES
Publisher: American Meteorological Society
Abstract: he multiple-single-column approach is proposed as a new concept to study the boundary layer parameterization scheme in the fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale ...
The Chemistry of a Dry Cloud: The Effects of Radiation and Turbulence
Publisher: American Meteorological Society
Abstract: The combined effect of ultraviolet radiation and turbulent mixing on chemistry in a cloud-topped boundary layer is investigated. The authors study a flow driven by longwave radiative cooling at cloud top. They consider a ...
Control of Chemical Reactions by Convective Turbulence in the Boundary Layer
Publisher: American Meteorological Society
Abstract: The influence of convective turbulence on chemical reactions in the atmospheric boundary layer is studied by means of direct numerical simulation (DNS). An archetype of turbulent reacting flows is used to study the reaction ...
Representing Sheared Convective Boundary Layer by Zeroth- and First-Order-Jump Mixed-Layer Models: Large-Eddy Simulation Verification
Publisher: American Meteorological Society
Abstract: Dry convective boundary layers characterized by a significant wind shear on the surface and at the inversion are studied by means of the mixed-layer theory. Two different representations of the entrainment zone, each of ...
The Contribution of Shear to the Evolution of a Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: The role of shear in the development and maintenance of a convective boundary layer is studied by means of observations and large eddy simulations (LESs). Particular emphasis is given to the growth of the boundary layer ...
Understanding the Daily Cycle of Evapotranspiration: A Method to Quantify the Influence of Forcings and Feedbacks
Publisher: American Meteorological Society
Abstract: A method to analyze the daily cycle of evapotranspiration over land is presented. It quantifies the influence of external forcings, such as radiation and advection, and of internal feedbacks induced by boundary layer, ...
Dispersion of a Passive Tracer in Buoyancy- and Shear-Driven Boundary Layers
Publisher: American Meteorological Society
Abstract: By means of finescale modeling [large-eddy simulation (LES)], the combined effect of thermal and mechanical forcing on the dispersion of a plume in a convective boundary layer is investigated. Dispersion of a passive tracer ...
Mean and Flux Horizontal Variability of Virtual Potential Temperature, Moisture, and Carbon Dioxide: Aircraft Observations and LES Study
Publisher: American Meteorological Society
Abstract: The effects of the horizontal variability of surface properties on the turbulent fluxes of virtual potential temperature, moisture, and carbon dioxide are investigated by combining aircraft observations with large-eddy ...
Shallow Cumulus Representation and Its Interaction with Radiation and Surface at the Convection Gray Zone
Publisher: American Meteorological Society
Abstract: AbstractThis study presents a systematic analysis of convective parameterizations performance with interactive radiation, microphysics, and surface on an idealized day with shallow convection. To this end, we analyze a ...