A5019702847- Atmospheric aerosols and clouds
- Meteorological Phenomena and Simulations
- Atmospheric chemistry and aerosols
- Geophysics and Gravity Measurements
- Climate variability and models
- GNSS positioning and interference
- Atmospheric and Environmental Gas Dynamics
- Tropical and Extratropical Cyclones Research
- Ionosphere and magnetosphere dynamics
- Precipitation Measurement and Analysis
- Aeolian processes and effects
- Heat Transfer and Optimization
- Geology and Paleoclimatology Research
- French Urban and Social Studies
- Air Quality Monitoring and Forecasting
Université Toulouse III - Paul Sabatier
2019-2022
Centre National de la Recherche Scientifique
2011-2022
Laboratoire d'Aérologie
2018-2022
Université de Toulouse
2019-2022
University of Oxford
2015-2020
Laboratoire de Météorologie Physique
2010-2019
Université Clermont Auvergne
2011-2015
Observatoire de Physique du Globe de Clermont-Ferrand
2010
Abstract In this work, we investigate the relationship between structure and evolution (from initiation to decay) of precipitation systems, associated water vapour distributions during COPS (Convective Orographically‐induced Precipitation Study). This international field campaign took place over an area from Vosges Black Forest Mountains, across Rhine Valley, in summer 2007. particular, consider retrieval through GPS integrated 2D maps 3D tomography, compare these systems observed with...
Abstract. The impact of aerosols on ice- and mixed-phase processes in deep convective clouds remains highly uncertain, the wide range interacting microphysical is still poorly understood. To understand these processes, we analyse diagnostic output all individual process rates for two bulk microphysics schemes Weather Research Forecasting model (WRF). We investigate response to changes aerosol conditions propagation perturbations through way macrophysical development clouds. perform...
Abstract. The direct and semi-direct radiative effects of biomass burning aerosols (BBAs) are investigated over southern Africa the southeastern Atlantic during Aerosols, Radiation Clouds in (AEROCLO-sA) field campaign September 2017. A reference convection-permitting simulation has been performed using Meso-NH model with an online dust emission scheme, a strongly absorbing BBA tracer emitted daily Global Fire Emissions Database online-computed backward Lagrangian trajectories. captures both...
In this article, we focus on one case study from the Convective and Orographically-induced Precipitation Study (COPS), which took place in north-eastern France south-western Germany during summer of 2007, a low mountain area.We investigate lee side precipitation due to shallow deep convection Intensive Observation Period (IOP) COPS have been well documented by all instruments.For that aim, use set observations radars, radiosoundings, satellite, network Global Positioning System (GPS)...
Current climate models cannot resolve individual convective clouds, and hence parameterizations are needed. The primary goal of parameterization is to represent the bulk impact convection on gridbox-scale variables. Spectral also aim key features subgrid-scale cloud field such as cloud-top-height distribution in-cloud vertical velocities in addition precipitation rates. Ground-based radar retrievals these quantities have been made available at Darwin, Australia, permitting direct comparisons...
Abstract. The Convective Cloud Field Model (CCFM) attempts to address some of the shortcomings both commonly used bulk mass-flux parameterisations and those using a prescribed spectrum clouds. By considering cloud as competitive system in which types interact through their environment competition for convective available potential energy (CAPE), is able respond dynamically changes environment. An explicit Lagrangian entraining plume model each type allows representation convective-cloud...
Numerical modelling of the airflow and precipitating convective systems are performed to better understand role topography for triggering convection over a moderate mountain region during Convective Orographically induced Precipitation Study (COPS) campaign.A non-hydrostatic cloud scale model with two nested domains is used which permits zoom from mesoscale environment south-western Germany/eastern France, into Vosges Mountains finally small-terrain field experiment, increasing grid...
Abstract Based on 5 years of measurements integrated water vapor (IWV), surface mixing ratio (MR), and rain rate, we investigate the relationship between field evolution precipitation lifecycle. We show that in 76% cases IWV reaches a maximum before peak precipitation, with occurring average 20 min after maximum. This delay can be related to fall time precipitation. also moister atmosphere, greater rates longer delay. Unlike IWV, MR 60% cases, highlighting interest compared only. paper...
Abstract. GPS data from 181 permanent stations extracted different networks covering France and the Italian part of Alps are used to estimate a homogeneous set tropospheric parameters over 14 years (from January 1998 May 2012). The zenith delay (ZTD) quantified in analysis is closely related value integrated water vapor above each station. ZTD already successfully for operational weather prediction meteorological analyses, providing valuable improve our comprehension cycle particular...
Abstract. The direct and semi-direct radiative effects of biomass burning aerosols (BBA) are investigated over southern Africa the southeast Atlantic during Aerosols, Radiation Clouds in (AEROCLO-sA) field campaign September 2017. A reference convection-permitting simulation has been performed using Meso-NH model with an on-line dust emission scheme, a BBA tracer emitted daily Global Fire Emissions Database online-computed backward Lagrangian trajectories. captures both aerosol optical depth...
Abstract. The interactions between aerosols and convective clouds represent some of the greatest uncertainties in climate impact atmosphere. A wide variety mechanisms have been proposed by which may invigorate, suppress or change properties individual clouds, can be reproduced high-resolution limited-area models. However, there also mesoscale, regional global adjustments modulate dampen such impacts cannot captured limited domain Convective Cloud Field Model (CCFM) provides a mechanism to...
Abstract. The impact of aerosols on ice- and mixed-phase processes in deep convective clouds remains highly uncertain the wide range interacting microphysical are still poorly understood. To understand these processes, we analyse diagnostic output all individual process rates for two cloud microphysics schemes Weather Research Forecasting model (WRF). We investigate response to changes aerosol conditions propagation perturbations through way macrophysical development clouds. perform...
Abstract. The Convective Cloud Field Model (CCFM) attempts to address some of the shortcomings both commonly-used bulk mass-flux parameterisations, and those using a prescribed spectrum clouds. By considering cloud as competitive system where types interact through their environment in competition for convective available potential energy (CAPE), is able respond dynamically changes environment. An explicit Lagrangian entraining plume model each type allows representation microphysics, paving...