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Marc Parlange

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Related publications (97)

POLLEN CLUMPING AND WIND DISPERSAL IN AN INVASIVE ANGIOSPERM

Marc Parlange, Michael David Martin, Charles Vivant Ignacio Meneveau

Pollen dispersal is a fundamental aspect of plant reproductive biology that maintains connectivity between spatially separated populations. Pollen clumping, a characteristic feature of insect-pollinated plants, is generally assumed to be a detriment to win ...

2009

Albedo effect on radiative errors in air temperature measurements

Marc-Olivier Boldi, Marc Parlange, Michael Lehning, Wolf Hendrik Huwald, Chad Higgins

Most standard air temperature measurements are subject to significant errors mainly due to sensor heating by solar radiation, even when the measurement principle is accurate and precise. We present various air temperature measurements together with other m ...

American Geophysical Union2009

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

Marc Parlange, Chad Higgins, Charles Vivant Ignacio Meneveau

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

Large eddy simulation of pollen transport in the atmospheric boundary layer

Marc Parlange, Charles Vivant Ignacio Meneveau

This paper presents a framework to simulate pollen dispersal by the wind based on the large eddy simulation(LES) technique. Important phenomena such as the pollen emission by the plants and the ground deposition are parameterized by the lower boundary cond ...

2009

Estimation of urban sensible heat flux using a dense wireless network of observations

Marc-Olivier Boldi, Martin Vetterli, Olivier Couach, Guillermo Barrenetxea Kobas, Marc Parlange, Daniel Nadeau

The determination of the sensible heat flux over urban terrain is challenging due to irregular surface geometry and surface types. To address this, in 2006–07, a major field campaign (LUCE) took place at the École Polytechnique Fédérale de Lausanne campus, ...

Springer Verlag2009

Estimation of wet surface evaporation from sensible heat flux measurements

Nikki Vercauteren, Marc Parlange, Wolf Hendrik Huwald

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

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

Jan Overney, 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

SensorScope: Out-of-the-Box Environmental Monitoring

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

An important field of application for wireless sensor networks is environmental monitoring. Given the importance of potential climate changes, environmental impact on cities, and pollution, it is an application domain where sensor networks can have great i ...

2008

Evaporation from a small water reservoir: Direct measurements and estimates

Marc Parlange, Shirit Cohen

Summary Knowing the rate of evaporation from surface water resources such as chan¬nels and reservoirs is essential for precise management of the water balance. However, evaporation is difﬁcult to measure experimentally over water surfaces and several tech¬ ...

2008

Turbulent kinetic energy budgets in a model canopy: comparisons between LES and wind-tunnel experiments

Marc Parlange, Charles Vivant Ignacio Meneveau

A comparative study of turbulence in a wind-tunnel model canopy is performed, using Large eddy simulation (LES) and experimental data from PIV and hot-wire anemom¬etry measurements. The model canopy is composed of thin cylindrical stalks. In the LES, these ...

2008

Influence of sediment settling velocity on mechanistic soil erosion modeling

Marc Parlange, David Andrew Barry

We report on a series of soil erosion experiments performed on the 2-m x 6-m EPFL erosion flume. Total sediment concentrations and the concentrations of seven size fractions (1000 mm) were measured during 1 ...

American Geophysical Union2008

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

Erratum to “Similarity solution of axisymmetric flow in porous media” [Advances in Water Resources, 28 (2005) 1076- 1082]

Marc Parlange, David Andrew Barry

Elsevier2008

SensorScope: Out-of-the-Box Environmental Monitoring

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

Environmental monitoring constitutes an important field of application for wireless sensor networks. Given the severity of potential climate changes, environmental impact on cities, and pollution, it is a domain where sensor networks can have great impact ...

IEEE2008

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

Nikki Vercauteren, Marc Parlange, Charles Vivant Ignacio Meneveau

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

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

Marc Parlange, Scott W. Tyler, 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

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

Ulrich Lemmin, Nikki Vercauteren, Marc Parlange, Wolf Hendrik Huwald, Charles Vivant Ignacio Meneveau

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

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

Marc Parlange, Charles Vivant Ignacio Meneveau

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

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

Marc Parlange, Charles Vivant Ignacio Meneveau

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

Limitation of the transport capacity approach in sediment transport modeling

Marc Parlange, David Andrew Barry

In a recent paper by Polyakov and Nearing (2003) it was shown experimentally that the sediment transport capacity in a rill is not unique for a given soil type, slope, and flow rate. Indeed, they found that the transport capacity was dependent on whether s ...

American Geophysical Union2007

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