Publications related to Atmospheric physics

A new wind-farm parameterization for large-scale atmospheric models

In this article, a new model is developed to parameterize the effect of wind farms in large-scale atmospheric models such as weather models. In the new model, wind turbines in a wind farm are parameterized as elevated sinks of momentum and sources of turbu ...

Amer Inst Physics2015

Atmospheric Flow Development and Associated Changes in Turbulent Sensible Heat Flux over a Patchy Mountain Snow Cover

Michael Lehning

In this study, the small-scale boundary layer dynamics and the energy balance over a fractional snow cover are numerically investigated. The atmospheric boundary layer flows over a patchy snow cover were calculated with an atmospheric model (Advanced Regio ...

Amer Meteorological Soc2015

Identification of snow precipitation mechanisms and accumulation patterns over complex terrain with very high resolution radar data and terrestrial laser scans

Michael Lehning, Alexis Berne, Jacopo Grazioli, Franziska Gerber, Daniel Wolfensberger

Knowledge on changes in seasonal mountain snow water resources are essential e.g. for hydropower companies. Both, snow accumulation and ablation need to be investigated to make precise predictions of water stored in a seasonal snow cover. Only if the proce ...

2015

3D turbulence measurements in inhomogeneous boundary layers with three wind LiDARs

Fernando Porté Agel, Giacomo Valerio Iungo, Fernando Carbajo Fuertes

One of the most challenging tasks in atmospheric anemometry is obtaining reliable turbulence measurements of inhomogeneous boundary layers at heights or in locations where is not possible or convenient to install tower-based measurement systems, e.g. mount ...

2014

Processing of biomass-burning aerosol in the eastern Mediterranean during summertime

Athanasios Nenes, Spyros Pandis

The aerosol chemical composition in air masses affected by wildfires from the Greek islands of Chios, Euboea and Andros, the Dalmatian Coast and Sicily, during late summer of 2012 was characterized at the remote background site of Finokalia, Crete. Air mas ...

European Geosciences Union2014

3D Turbulence Measurements Using Three Synchronous Wind Lidars: Validation against Sonic Anemometry

Fernando Porté Agel, Giacomo Valerio Iungo, Fernando Carbajo Fuertes

This paper presents a technique to measure the time series of the three components of the wind vector at a point in space from synchronous measurements of three scanning Doppler wind lidars. Knowing the position of each lidar on the ground and the orientat ...

Amer Meteorological Soc2014

Volumetric scans of wind turbine wakes performed with three simultaneous wind LiDARs under different atmospheric stability regimes

Fernando Porté Agel, Giacomo Valerio Iungo

Aerodynamic optimization of wind farm layout is a crucial task to reduce wake effects on downstream wind turbines, thus to maximize wind power harvesting. However, downstream evolution and recovery of wind turbine wakes are strongly affected by the charact ...

IOP Publishing Ltd2014

Volumetric Lidar Scanning of Wind Turbine Wakes under Convective and Neutral Atmospheric Stability Regimes

Fernando Porté Agel, Giacomo Valerio Iungo

Optimization of a wind farm's layout is a strategic task to reduce wake effects on downstream turbines, thus maximizing wind power harvesting. However, downstream evolution and recovery of each wind turbine wake are strongly affected by the characteristics ...

Amer Meteorological Soc2014

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

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