Concept

Atmospheric instability

Related publications (123)

Cellulose nanofiber network for moisture stable, strong and ductile biocomposites and increased epoxy curing rate

John Christopher Plummer, Sylvain Cyril Claude Galland, Lars Berglund

Nanocomposites with high volume fractions (15-50 vol%) of nanofibrillated cellulose (NFC) were prepared by impregnation of a wet porous NFC network with acetone/epoxy/amine solution. Infrared spectroscopy studies revealed a significant increase in curing r ...

Elsevier Sci Ltd2014

A low-cost sensible heat flux sensor for potential use in wireless sensor networks and citizen observatories

Wolf Hendrik Huwald, Alexander Bahr, Steven Vincent Weijs, Chad Higgins, Tristan Jonas Brauchli, Nicolas Bigler

The sensible heat flux is an important component of the land-atmosphere energy exchange but is relatively expensive to measure using standard techniques such as eddy covariance. Application of a flux variance method based on Monin-Obukhov similarity theory ...

2014

HYMEX-SOPI The Field Campaign Dedicated to Heavy Precipitation and Flash Flooding in the Northwestern Mediterranean

Alexis Berne

The Mediterranean region is frequently affected by heavy precipitation events associated with flash floods, landslides, and mudslides that cause hundreds of millions of euros in damages per year and, often, casualties. A major field campaign was devoted to ...

American Meteorological Society2014

Wind-tunnel experiments of turbulent flow over a surface-mounted 2-D block in a thermally-stratified boundary layer

Fernando Porté Agel, Wei Zhang, Corey Dean Markfort

Turbulent flows over complex surface topography have been of great interest in the atmospheric science and wind engineering communities. The geometry of the topography, surface roughness and temperature characteristics as well as the atmospheric thermal st ...

2014

Wake flow variability in a wind farm throughout a diurnal cycle

Fernando Porté Agel, Ahmad Sharifi

The atmospheric boundary layer (ABL) undergoes substantial changes in its structure and dynamics in the course of a day due to the transient nature of forcing factors such as the surface fluxes of heat and momentum. The non- stationary nature of the mean w ...

2014

Development of two-moment cloud microphysics for liquid and ice within the NASA Goddard Earth Observing System Model (GEOS-5)

Athanasios Nenes

This work presents the development of a two-moment cloud microphysics scheme within version 5 of the NASA Goddard Earth Observing System (GEOS-5). The scheme includes the implementation of a comprehensive stratiform microphysics module, a new cloud coverag ...

2014

Wind-tunnel experiments of thermally-stratified turbulent boundary layer flow over a wall-mounted 2-D block

Fernando Porté Agel, Wei Zhang, Corey Dean Markfort

Turbulent boundary-layer flows over complex topography have been extensively studied in the atmospheric sciences and wind engineering communities. The upwind turbulence level, the atmospheric thermal stability and the shape of the topography as well as sur ...

2014

Turing pattern formation driven by cross diffusion for a superdiffusive Lotka-Volterra competitive model

Ricardo Esteban Ruiz Baier

We focus our attention on the effects of introducing the fractional-in-space operator into a Lotka-Volterra competitive model describing population superdiffusion. First, we are interested in how cross superdiffusion influences the formation of spatial pat ...

2014

On the development of a dynamic non-linear closure for large-eddy simulation of the atmospheric boundary layer

Fernando Porté Agel, Hao Lu

A dynamic procedure is developed to compute the model coefficients in the recently introduced modulated gradient models for both momentum and scalar fluxes. The magnitudes of the subgrid-scale (SGS) stress and the SGS flux are estimated using the local equ ...

2014

On the Development of a Dynamic Non-linear Closure for Large-Eddy Simulation of the Atmospheric Boundary Layer

Fernando Porté Agel, Hao Lu

Springer2014

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