Concept

Outline of meteorology

Related publications (40)

Stochastic simulation of intermittent rainfall using the concept of “dry drift”

Alexis Berne, Marc Schleiss, Sabine Chamoun

A stochastic rainfall simulator based on the concept of “dry drift” is proposed. It is characterized by a new and nonstationary representation of rainfall in which the average rain rate (in log-space) depends on the distance to the closest surrounding dry ...

American Geophysical Union2014

Influence of small scale rainfall variability on standard comparison tools between radar and rain gauge data

Alexis Berne

Rain gauges and weather radars do not measure rainfall at the same scale; roughly 20 cm for the former and 1 km for the latter. This significant scale gap is not taken into account by standard comparison tools (e.g. cumulative depth curves, normalized bias ...

Elsevier2014

A Variational Approach to Retrieve Rain Rate by Combining Information from Rain Gauges, Radars, and Microwave Links

Alexis Berne, Blandine Bianchi

Accurate and reliable rain rate estimates are important for various hydrometeorological applications. Consequently, rain sensors of different types have been deployed in many regions. In this work, measurements from different instruments, namely, rain gaug ...

2013

Spatial variability of near surface soil moisture in an alpine catchment: application of a wireless network of meteorological stations

Marc Parlange, Steven Vincent Weijs, Guillermo Barrenetxea Kobas, Raphaël Mutzner

Soil moisture is an essential control on hydrological and meteorological behavior and knowledge of its spatial variability is considered to be of high importance for the performance of distributed hydrological models. Few studies have tried to assess the s ...

2012

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

Influence of the Subgrid Variability of the Raindrop Size Distribution on Radar Rainfall Estimators

Alexis Berne, Joël Jaffrain

This work aims at quantifying the variability of the parameters of the power laws used for rain-rate estimation from radar data, on the basis of raindrop size distribution measurements over a typical weather radar pixel. Power laws between the rain rate an ...

American Meteorological Society2012

Polarimetric X-band weather radar measurements in the tropics: radome and rain attenuation correction

Marc Schneebeli Zeugin

A polarimetric X-band radar has been deployed during one month (April 2011) for a field campaign in Fortaleza, Brazil, together with three additional laser disdrometers. The disdrometers are capable of measuring the raindrop size distributions (DSDs), henc ...

Copernicus Gesellschaft Mbh2012

Quantification of the Small-Scale Spatial Structure of the Raindrop Size Distribution from a Network of Disdrometers

Alexis Berne, Joël Jaffrain

The spatial structure of the raindrop size distribution (DSD) conveys crucial information for reliable quantitative estimation of rainfall using remote sensing techniques. To investigate this question, a network of 16 optical disdrometers has been deployed ...

American Meteorological Society2012

A Disdrometer based on Ultra-Fast SPAD Cameras

Edoardo Charbon, Claudio Bruschini, Alexis Berne, Samuel Burri, Alain Berthoud

We present a new environmental application of SPAD imagers, namely the continuous and real-time measurement of size and shapes of hydrometeors. Details of the set-up and results obtained with a first 32x32 pixel prototype based on the RADHARD2 chip [1] are ...

2011

A Disdrometer based on ultra-fast SPAD Cameras

Edoardo Charbon, Claudio Bruschini, Alexis Berne, Samuel Burri, Alain Berthoud

We present a new environmental application of SPAD imagers, the continuous measurement of size and shapes of hydrometeors. A first 32×32 pixel prototype allows real-time operation at very low light levels, 6000 fps and 1:100 average data reduction. ...

OSA2011

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