A5000824614- Atmospheric aerosols and clouds
- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Wind and Air Flow Studies
- Cryospheric studies and observations
- Icing and De-icing Technologies
- Geophysics and Gravity Measurements
- Winter Sports Injuries and Performance
- Air Traffic Management and Optimization
- Health and Lifestyle Studies
Laboratoire atmosphères, milieux, observations spatiales
2020-2024
Université de Versailles Saint-Quentin-en-Yvelines
2020-2024
Centre National de la Recherche Scientifique
2020-2024
Institut Pierre-Simon Laplace
2020-2024
Université Paris-Saclay
2020-2024
Sorbonne Université
2020-2024
Center For Remote Sensing (United States)
2023
Abstract An international field experiment took place in the Swiss Jura January 2021 as a milestone of European ICE GENESIS project ( www.ice-genesis.eu/ ), which aims to better measure, understand, and model ice/snow particle properties mechanisms responsible for icing rotor-craft aircraft. The campaign was designed collect observations clouds snowfall at prescribed range temperatures (−10° +2°C). suite situ remote sensing instruments included airborne probes imagers on board SAFIRE ATR-42...
Abstract. This article presents a new cloud radar calibration methodology using solid reference reflectors mounted on masts, developed during two field experiments held in 2018 and 2019 at the Site Instrumental de Recherche par Télédétection Atmosphérique (SIRTA) atmospheric observatory, located Palaiseau, France, framework of Aerosol Clouds Trace gases Research InfraStructure version 2 (ACTRIS-2) research innovation program. The experimental setup includes 10 20 cm triangular trihedral...
Abstract. In this study, we use a synergy of in-situ and remote sensing measurements collected during the Southwest FOGs 3D experiment for processes study (SOFOG3D) field campaign in autumn 2019 winter 2020, to analyze thermodynamic turbulence related fog formation, evolution, dissipation across southwestern France. Based on unique dataset with very high resolution conceptual model, an analysis four heaviest episodes (two radiation fogs two advection-radiation fogs) is conducted. The results...
<div class="section abstract"><div class="htmlview paragraph">Measurements in snow conditions performed the past were rarely initiated and best suited for pure extremely detailed quantification of microphysical properties a series parameters, needed accretion modelling. Within European ICE GENESIS project, considerable effort natural measurements has been made during winter 2020/21. Instrumental means, both in-situ remote sensing deployed on ATR-42 aircraft, as well ground...
Abstract. In this study, we use a synergy of in situ and remote sensing measurements collected during the SOuthwest FOGs 3D experiment for processes study (SOFOG3D) field campaign autumn winter 2019–2020 to analyse thermodynamic turbulent related fog formation, evolution, dissipation across southwestern France. Based on unique measurement dataset (synergy cloud radar, microwave radiometer, wind lidar, weather station data) combined with conceptual model, an analysis four deepest episodes...
Abstract. A new generation of cloud radars, with the ability to make observations close surface, presents possibility observing fog properties better insight than was previously possible. The use these instruments as part an operational observation network could improve prediction events, something which is still a problem for even high-resolution numerical weather models. However, retrieval liquid water content (LWC) profiles from radar reflectivity alone under-determined problem,...
Abstract. Cloud radars are capable of providing continuous high-resolution observations clouds and now offer new capabilities within fog layers thanks to the development frequency-modulated continuous-wave 95 GHz cloud radars. These related microphysical properties clouds. Power law relations in form Z=a⋅LWCb generally used estimate liquid water content (LWC) profiles. The constants a b from power relation vary with type characteristics. Due variety such parameterizations, selecting most...
Abstract This article presents a calibration transfer methodology that can be used between radars of the same or different frequency bands. method enables absolute cloud radar by transferring it from another collocated instrument with known calibration, simultaneously measuring vertical ice reflectivity profiles. The advantage is added uncertainty in newly calibrated converge to magnitude reference calibration. achieved carefully selecting comparable data, including identification range...
Abstract. Observations collected during the SOuth west FOGs 3D experiment for processes study (SOFOG3D) field campaign are examined to document vertical profile of microphysical and thermodynamic properties fog layers. In situ measurements under a tethered balloon provide 140 profiles liquid water content (LWC) from an adapted cloud droplet probe (CDP), which allow exhaustive analysis life cycle 8 thin fogs (thickness < 50 m) 4 developed We estimate thin-to-thick transition time remote...
&lt;p&gt;Transportation especially aviation sector all around the world is severely hindered due to Fog and hence observations specific research for fog necessary. The SOFOG3D (SOuth west FOGs 3D) experiment took place in South-West of France which particularly prone occurrence, during period between November 2019 March 2020 with primary objective advance our understanding processes improve forecast. Simultaneous measurements from various remote sensing instruments like BASTA: a 95...
<div class="section abstract"><div class="htmlview paragraph">In the framework of European ICE GENESIS project (https://www.ice-genesis.eu/), a field experiment was conducted in Swiss Jura January 2021 order to characterize snow microphysical properties and document conditions for aviation industry purposes. Complementary companion papers reporting on properties, this study presents an investigation mixed-phase sampled during campaign. Using situ measurement liquid total water...
ResumenEl año 2015 se creó la Alianza por un Chile sin diabetes, agrupación cuyo objetivo es promover y difundir el conocimiento e investigación en torno a esta enfermedad, que afecta casi 2 millones de chilenos.El 2017 organizó 1. er Foro Consenso Acceso, Economía Salud Políticas Públicas Diabetes, espacio diálogo colaboración entre Academia, Ministerio AbstRACtIn 2015, the Alliance for without Diabetes was created, group that seeks to promote and disseminate knowledge research on this...
Abstract. Cloud radars are capable of providing continuous high-resolution observations the cloud. These related to microphysical properties clouds. Power law relations in form Z = a · LWCb generally used estimate liquid water content (LWC) profiles. The constants and b from power-law relation vary with cloud type characteristics. Due variety such parameterizations, selecting most appropriate Z-LWC for system is complicated. Additional information as Liquid path (LWP) co-located microwave...
Abstract. A new generation of cloud radars, with the ability to make observations close surface, presents possibility observing fog properties better insight than was previously possible. The use these instruments as part an operational observation network could improve prediction events, something which is still a problem for even high-resolution Numerical Weather Prediction models. However, retrieval liquid water content (LWC) profiles from radar reflectivity alone under-determined...