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Alexis Berne

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Related publications (135)

A Disdrometer based on Ultra-Fast SPAD Cameras

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

Experimental Quantification of the Sampling Uncertainty Associated with Measurements from PARSIVEL Disdrometers

Alexis Berne, Joël Jaffrain

The variability of the (rain)drop size distribution (DSD) in time and space is an intrinsic property of rainfall, of primary importance for various environmental fields such as remote sensing of precipitation for example. DSD observations are usually colle ...

American Meteorological Society2011

Improved interpolation of meteorological forcings and hydrologic implications for a Swiss alpine region

Marc Parlange, Alexis Berne, Cara Christine Tobin, Andrea Rinaldo, Ludovico Nicotina

This paper presents a comparative study on the mapping of temperature and precipitation fields in complex Alpine terrain. Its relevance hinges on the major impact that inadequate interpolations of meteorological forcings bear on the accuracy of hydrologic ...

2011

Statistical analysis of rainfall intermittency at small spatial and temporal scales

Marc Schleiss, Alexis Berne, Joël Jaffrain

Rainfall intermittency is analyzed and quantified at small spatial and temporal scales using 2 years of radar and disdrometer data collected in Switzerland. Analytical models are fitted and used to describe the intermittency for spatial scales between 0 an ...

American Geophysical Union2011

A network of disdrometers to quantify the small-scale variability of the raindrop size distribution

André Studzinski, Alexis Berne, Joël Jaffrain

Insight into the spatial variability of the (rain) drop size distribution (DSD), and hence rainfall, is of primary importance for various environmental applications like cloud/precipitation microphysical processes, numerical weather modeling, and estimatio ...

American Geophysical Union2011

Statistical analysis of rainfall intermittency at small scales

Marc Schleiss, Alexis Berne

2010

Stochastic simulation of intermittent DSD fields in time

Marc Schleiss, Alexis Berne

A method for the stochastic simulation of (rain)drop size distributions (DSDs) in space and time using geostatistics is presented. At each pixel, the raindrop size distribution is described by a Gamma distribution with two or three stochastic parameters. T ...

2010

Identification of dry and rainy periods using telecommunication microwave links

Marc Schleiss, Alexis Berne

2010

Errors and uncertainties in microwave link rainfall estimation explored using drop size measurements and high-resolution radar data

Alexis Berne

Microwave links can be used for the estimation of path-averaged rainfall by using either the path-integrated attenuation or the difference in attenuation of two signals with different frequencies and/or polarizations. Link signals have been simulated using ...

American Meteorological Society2010

Identification of dry and rainy periods using telecommunication microwave links

Marc Schleiss, Alexis Berne

Microwave links are widely used for wireless data exchange, particularly between base stations of mobile phone networks. Because of the range of frequencies used for data transmission, the link signal is attenuated when rainfall occurs along the link path. ...

2010

Weather Radar and Hydrology

Alexis Berne

2009

Variability of the spatial structure of intense Mediterranean precipitation

Alexis Berne

Intense Mediterranean precipitation can generate devastating flash floods. A better understanding of the spatial structure of intense rainfall is critical to better identify catchments that will produce strong hydrological responses. We focus on two intens ...

2009

Geostatistical simulation of 2D fields of raindrop size distributions at the meso-gamma scale

Marc Schleiss, Alexis Berne

The large variability of the drop size distribution (DSD) in space and time must be taken into account to improve remote sensing of precipitation. The ability to simulate a large number of 2D fields of DSD sharing the same statistical properties provides a ...

American Geophysical Union2009

Stochastic simulation experiment to assess radar rainfall retrieval uncertainties associated with attenuation and its correction

Alexis Berne

As rainfall constitutes the main source of water for the terrestrial hydrological processes, accurate and reliable measurement and prediction of its spatial and temporal distribution over a wide range of scales is an important goal for hydrology. We invest ...

2008

Path-averaged rainfall estimation using microwave links: uncertainty due to spatial rainfall variability

Alexis Berne

2007

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