Publication
Doppler spectra collected by weather and cloud radars during the POPE 2020 campaign at Princess Elisabeth Antarctica
Publications associées (32)
Data and scripts for "Unraveling secondary ice production in winter orographic clouds through a synergy of in-situ observations, remote sensing and modeling"
Athanasios Nenes, Alexis Berne, Satoshi Takahama, Georgia Sotiropoulou, Paraskevi Georgakaki, Romanos Foskinis, Kunfeng Gao, Anne-Claire Marie Billault--Roux
This repository contains field observations and processed data from the Weather Research and Forecasting (WRF) model simulations and the Cloud Resolving Model Radar Simulator (CR-SIM), alongside scripts designed to reproduce the figures presented in the pa ...
Zenodo2024Snowfall microphysics: a dual-frequency and Doppler spectral radar perspective
Anne-Claire Marie Billault--Roux
Snowfall is an essential component of the hydrological cycle, as it is involved in most precipitation on Earth, either directly as snow falling to the ground or indirectly as rain melted from snow. At the same time, the ice phase of clouds and precipitatio ...
EPFL2023Calibration Transfer Methodology for Cloud Radars Based on Ice Cloud Observations
This article presents a calibration transfer methodology that can be used between radars of the same or dif-ferent frequency bands. This method enables the absolute calibration of a cloud radar by transferring it from another collocated instrument with kno ...
AMER METEOROLOGICAL SOC2023Leveraging meteorological radars to investigate the influence of atmospheric dynamics on snowfall microphysics
Precipitation is the result of a chain of meteorological processes ranging from the large- to the micro-scale. While the transport of moisture and lifting mechanisms leading to cloud formation are mostly governed by dynamical processes, the formation and g ...
EPFL2021Learning about the vertical structure of radar reflectivity using hydrometeor classes and neural networks in the Swiss Alps
Alexis Berne, Marco Gabella, Urs Martin Germann, Floortje Elisabeth Maria Van den Heuvel
The use of radar for precipitation measurement in mountainous regions is complicated by many factors, especially beam shielding by terrain features, which, for example, reduces the visibility of the shallow precipitation systems during the cold season. Whe ...
2020Statistical analysis of the spatial and temporal variability of polarimetric weather radar signals in the Alps
Floortje Elisabeth Maria Van den Heuvel
The accurate estimation of precipitation quantities arriving at the ground in complex terrain such as the Alps is complicated by many factors. The orography interacts with atmospheric flow and thus influences the spatial and temporal distribution as well a ...
EPFL2019Microphysics of Snowfall Over Coastal East Antarctica Simulated by Polar WRF and Observed by Radar
Alexis Berne, Josué Etienne Gehring, Nikola Besic, Etienne Gabriel Henri Vignon, Nicolas Jean François Jullien
The current assessment of the Antarctic surface mass balance mostly relies on reanalysis products or climate model simulations. However, little is known about the ability of models to reliably represent the microphysical processes governing the precipitati ...
AMER GEOPHYSICAL UNION2019Radar-rain gauge merging and discharge data assimilation for flood forecasting in Alpine catchments
Floods are responsible for one third of the economic losses induced by natural hazards throughout the world. To better protect the population and infrastructures, flood forecasting systems make us of weather forecasts to foresee floods several days in adva ...
EPFL2019Spatial interpolation of precipitation from multiple rain gauge networks and weather radar data for operational applications in Alpine catchments
Giovanni De Cesare, Javier García Hernández, Bettina Schaefli, Alain Tommy Foehn
Increasing meteorological data availability and quality implies an adaptation of the interpolation methods for data combination. In this paper, we propose a new method to efficiently combine weather radar data with data from two heated rain gauge networks ...
2018A polarimetric radar operator to evaluate precipitation from the COSMO atmospheric model
Weather radars provide real-time measurements of precipitation at a high temporal and spatial resolution and over a large domain. A drawback, however, it that these measurements are indirect and require careful interpretation to yield relevant information ...
EPFL2018