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Marc Parlange

Cette personne a quitté l’EPFL

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Publications associées (97)

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The influence of local meteorological conditions on the circadian rhythm of corn (Zea mays L.) pollen emission

Marc Parlange

Field experiments were performed to study the diurnal cycle of corn pollen emission and its relation to local meteorological conditions, including temperature, relative humidity, solar radiation, mean wind speed, and turbulence quantities. Pollen concentra ...

2008

Geometric Alignments of the Subgrid-Scale Force in the Atmospheric Boundary Layer

Marc Parlange, Chad Higgins

priori tests of subgrid-scale (SGS) models for large-eddy simulations (LES). The experimental arrangements and data collected have facilitated studies of variables such as the filtered strain rate, SGS stress and dissipation, and the eddy viscosity coeffic ...

2009

Concentration profiles of particles settling in the neutral and stratified atmospheric boundary layer

Marc Parlange

An expression for the vertical equilibrium concentration profile of heavy particles, including the effects of canopy on the eddy diffusivity as well as corrections for atmospheric stability, is proposed. This expression is validated against measurements of ...

2007

The Local Structure of Atmospheric Turbulence and Its Effect on the Smagorinsky Model for Large Eddy Simulation

Marc Parlange

Phenomena such as large-scale shear, buoyancy, and the proximity to the ground surface significantly affect interactions among scales in atmospheric boundary layer turbulent flows. Hence, these phenomena impact parameters that enter subgrid-scale (SGS) par ...

2007

The Effects of Building Representation and Clustering in Large-Eddy Simulations of Flows in Urban Canopies

Marc Parlange

We perform large-eddy simulations of neutral atmospheric boundary-layer flow over a cluster of buildings surrounded by relatively flat terrain. The first investigated question is the effect of the level of building detail that can be included in the numeri ...

2009

Subgrid-Scale Dynamics of Water Vapour, Heat, and Momentum over a Lake

Marc Parlange, Ulrich Lemmin, Wolf Hendrik Huwald, Nikki Vercauteren

We examine the dynamics of turbulence subgrid (or sub-filter) scales over a lake surface and the implications for large-eddy simulations (LES) of the atmospheric boundary layer. The analysis is based on measurements obtained during the Lake-Atmosphere Turb ...

2008

Estimation of wet surface evaporation from sensible heat flux measurements

Marc Parlange, Wolf Hendrik Huwald, Nikki Vercauteren

A new method is proposed to estimate wet surface evaporation by means of measurements of sensible heat flux and of air temperature, relative humidity, and wind speed at one level only. This formulation is made possible by the linearization of the Bowen rat ...

American Geophysical Union2009

Similarity Scaling Over a Steep Alpine Slope

Marc Parlange, Chad Higgins, Daniel Nadeau, Eric Richard Pardyjak

In this study,we investigate the validity of similarity scaling over a steep mountain slope (30–41◦). The results are based on eddy-covariance data collected during the Slope Experiment near La Fouly (SELF-2010); a field campaign conducted in a narrow vall ...

Springer2013

A comparative quadrant analysis of turbulence in a plant canopy

Marc Parlange

Large-eddy simulation (LES) of turbulence in plant canopies has traditionally been validated using bulk statistical quantities such as mean velocity and variance profiles. However, turbulent exchanges between a plant canopy and the atmosphere are dominated ...

2007

Numerical study of dynamic Smagorinsky models in large-eddy simulation of the atmospheric boundary layer: Validation in stable and unstable conditions

Marc Parlange

Large-eddy simulation (LES) of atmospheric boundary layer (ABL) flow is performed over a homogeneous surface with different heat flux forcings. The goal is to test the performance of dynamic subgrid-scale models in a numerical framework and to compare the ...

American Geophysical Union2006

SensorScope: Application-Specific Sensor Network for Environmental Monitoring

Martin Vetterli, Marc Parlange, Guillermo Barrenetxea Kobas, Olivier Couach, François Ingelrest

SensorScope is a turnkey solution for environmental monitoring systems, based on a wireless sensor network and resulting from a collaboration between environmental and network researchers. Given the interest in climate change, environmental monitoring is a ...

2010

The Effect of Scale on the Applicability of Taylor’s Frozen Turbulence Hypothesis in the Atmospheric Boundary Layer

Marc Parlange, Valentin Simeonov, Chad Higgins, Martin Froidevaux, Nikki Vercauteren, Caitlin Ellen Barry

Taylor’s frozen turbulence hypothesis is the central assumption invoked in most experiments designed to investigate turbulence physics with time resolving sensors. It is also frequently used in theoretical discussions when linking Lagrangian to Eulerian fl ...

2012

Raman Lidar for Meteorological Observations, RALMO - Part 1: Instrument description

Hubert van den Bergh, Marc Parlange, Valentin Simeonov, Bertrand Calpini, Todor Dinoev

A new Raman lidar for unattended, round-the-clock measurement of vertical water vapor profiles for operational use by the MeteoSwiss has been developed during the past years by the Swiss Federal Institute of Technology, Lausanne. The lidar uses narrow fiel ...

European Geosciences Union2013

Perturbations to the Spatial and Temporal Characteristics of the Diurnally-Varying Atmospheric Boundary Layer Due to an Extensive Wind Farm

Marc Parlange, Varun Sharma, Marc Calaf Bracons

The effect of extensive terrestrial wind farms on the spatio-temporal structure of the diurnally-evolving atmospheric boundary layer is explored. High-resolution large-eddy simulations of a realistic diurnal cycle with an embedded wind farm are performed. ...

Springer Verlag2017

Impact of Surface Flux Formulations and Geostrophic Forcing on Large-Eddy Simulations of Diurnal Atmospheric Boundary Layer Flow

Marc Parlange

The impact of surface flux boundary conditions and geostrophic forcing on multiday evolution of flow in the atmospheric boundary layer (ABL) was assessed using large-eddy simulations (LES). The LES investigations included several combinations of surface bo ...

American Meteorological Society2010

Evolution of flow characteristics through finite-sized wind farms and influence of turbine arrangement

Varun Sharma, Marc Parlange, Marc Calaf Bracons

Pergamon-Elsevier Science Ltd2018

Scale dependence of subgrid-scale model coefficients: An a priori study

Marc Parlange, Nikki Vercauteren

Dynamic subgrid-scale models require an a priori assumption about the variation in the model coefficients with filter scale. The standard dynamic model assumes independence of scale while the scale dependent model assumes power-law dependence. In this pape ...

2008

Attenuation of wind-induced pressure perturbations in alpine snow

Marc Parlange, Wolf Hendrik Huwald, Chad Higgins

Windpumping has been identified as a process that could potentially enhance sublimation of surface snow at high forcing frequency and spawn air movement deeper in firn at lower frequencies. We performed an experiment to examine the relationship between hig ...

International Glaciological Society2016

Evaporation from three water bodies of diﬀerent sizes and climates: Measurements and scaling analysis

Marc Parlange, Shirit Cohen, Gabriel George Katul

Evaporation from small reservoirs, wetlands, and lakes continues to be a theoretical and practical problem in surface hydrology and micrometeorology because atmospheric ﬂows above such systems can rarely be approximated as stationary and planar-homogeneous ...

2008

A Hybrid Spectral/Finite-Volume Algorithm for Large-Eddy Simulation of Scalars in the Atmospheric Boundary Layer

Marc Parlange

Pseudospectral methods are frequently used in the horizontal directions in large-eddy simulation of atmospheric flows. However, the same approach often creates unphysical oscillations for scalar fields if there are horizontal heterogeneities in the sources ...

2008