Concept

Convective storm detection

Publications associées (108)

Convective cells and blob control in a simple magnetized plasma

Ambrogio Fasoli, Ivo Furno, Christian Gabriel Theiler, Joaquim Loizu Cisquella

Blob control by creating convective cells using biased electrodes is demonstrated in simple magnetized toroidal plasmas. A two-dimensional array of electrodes is installed on a metal limiter to obtain different biasing schemes. Detailed two-dimensional mea ...

American Physical Society2012

Experimental Quantification of the Variability of the Raindrop Size Distribution at Small Scales

Joël Jaffrain

Reliable quantitative precipitation estimation is crucial to better understand and eventually prevent water-related natural hazards (floods, landslides, avalanches, ...). Because rainfall is highly variable in time and space, precipitation monitoring and f ...

EPFL2012

A sun-tracking method to improve the pointing accuracy of weather radar

Alexis Berne, Marc Schneebeli Zeugin, Xavier Muth

Accurate positioning of data collected by a weather radar is of primary importance for their appropriate georeferencing, which in turn makes it possible to combine those with additional sources of information (topography, land cover maps, meteorological si ...

2012

X-band polarimetric radar data set of alpine precipitation

Alexis Berne, Jacopo Grazioli, Marc Schneebeli Zeugin, Danny Eddy Scipion Castillo

A mobile X-band dual-polarization Doppler radar (MXPOL), belonging to the Environmental Remote Sensing Laboratory (LTE) of EPFL (Lausanne) was deployed in Davos (Switzerland) at an altitude of 213 m from September 2009 to July 2011, in order to observe and ...

2012

Stochastic Space–Time Disaggregation of Rainfall into DSD fields

Alexis Berne, Marc Schleiss

A stochastic method to disaggregate rain rate fields into drop size distribution (DSD) fields is proposed. It is based on a previously presented DSD simulator that has been modified to take into account prescribed block-averaged rain rate values at a coars ...

American Meteorological Society2012

Adjoint sensitivity of global cloud droplet number to aerosol and dynamical parameters

Athanasios Nenes

We present the development of the adjoint of a comprehensive cloud droplet formation parameterization for use in aerosol-cloud-climate interaction studies. The adjoint efficiently and accurately calculates the sensitivity of cloud droplet number concentrat ...

2012

Properties of convective cells generated in magnetized toroidal plasmas

Ambrogio Fasoli, Ivo Furno, Paolo Ricci, Christian Gabriel Theiler, Joaquim Loizu Cisquella

Convective cells for turbulence control, generated by means of biased electrodes, are investigated in the simple magnetized toroidal plasmas of TORPEX. A two-dimensional array of 24 electrodes is installed on a metal limiter to test different biasing schem ...

American Institute of Physics2012

Influence of the DSD variability at the radar subgrid scale on radar power laws

Alexis Berne, Joël Jaffrain

Power laws relating the different radar observables (from conventional or polarimetric radar systems) are commonly used in the processing of radar measurements (e.g., attenuation correction) and in their conversion into rain rate values (e.g., Z-R relation ...

2012

Sensitivity analysis of polarimetric attenuation correction algorithms

Alexis Berne, Samuel Jolivet

Polarimetry improves radar rainfall estimation. It allows a better separation of meteorological and nonmeteorological echoes, a better identification of the type of hydrometeors, and an improved correction of the attenuation due to rain affecting the signa ...

2012

An integrated modeling study on the effects of mineral dust and sea salt particles on clouds and precipitation

Athanasios Nenes

This report addresses the effects of pollution on the development of precipitation in clean ("pristine") and polluted ("hazy") environments in the Eastern Mediterranean by using the Integrated Community Limited Area Modeling System (ICLAMS) (an extended ve ...

2011

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