A5012984759- Oceanographic and Atmospheric Processes
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
- Atmospheric chemistry and aerosols
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Vehicle emissions and performance
- Ocean Waves and Remote Sensing
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Marine and coastal plant biology
- Coastal wetland ecosystem dynamics
- Marine and environmental studies
- Data Analysis with R
- Target Tracking and Data Fusion in Sensor Networks
- Solar and Space Plasma Dynamics
- NMR spectroscopy and applications
- Reservoir Engineering and Simulation Methods
- Surface Roughness and Optical Measurements
- Oil Spill Detection and Mitigation
- Land Use and Ecosystem Services
- Climate Change and Health Impacts
- Artificial Intelligence in Healthcare
- COVID-19 impact on air quality
Institut Scientifique de Service Public
2012-2024
University of Liège
2006-2012
NATO Centre for Maritime Research and Experimentation
2010
Dynamic Research (United States)
2009
Laboratoire d’Études en Géophysique et Océanographie Spatiales
2008
In this study, the performance of two types source apportionment models was evaluated by assessing results provided 40 different groups in framework an intercomparison organised FAIRMODE WG3 (Forum for air quality modelling Europe, Working Group 3). The evaluation based on indicators: z-scores and root mean square error weighted reference uncertainty (RMSEu), with pre-established acceptability criteria. By involving completely independent input data, such as receptor (RMs) chemical transport...
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This study investigates the effects of significant activity changes on air pollutant concentrations across three European cities Hamburg, Liège, and Marseille focuses COVID-19 lockdown measures as a case for such changes. To identify effects, this utilizes urban-scale chemistry transport modeling, embedded in regional-scale Chemistry Transport simulations. The outcomes underscore significance considering local conditions emissions sources, variations between urban regional simulations...
Abstract A benchmark was performed, comparing the results of three different methodologies proposed by institutions to calibrate a network low-cost PM2.5 sensors, on an hourly basis, using synthetically generated real concentrations and sensor measurements. The objective calibrations correct 2000+ measurements in Netherlands for sensitivity (local) environmental conditions. option use dropped because number sensors sufficiently close 40 reference measurement locations assessed be spatially...
An innovative multi‐model fusion technique is proposed to improve short‐term ocean temperature forecasts: the three‐dimensional super‐ensemble. In this method, a Kalman Filter used adjust model weights over past learning period, allowing give more importance recent observations, and take into account spatially varying skills. The predictive performance evaluated against SST analyses, CTD casts gliders tracks collected during Ligurian Sea Cal/Val 2008 experiment. Statistical results not only...
Abstract. A method is presented to create an ensemble of perturbations that satisfies linear dynamical constraints. cost function formulated defining the probability each perturbation. It shown created with this approach take land-sea mask into account in a similar way as variational analysis techniques. The impact illustrated idealized configuration barrier island. Perturbations spatially variable correlation length can be also by approach. applied realistic West Florida Shelf M2 tidal...
Abstract. Nowadays, several operational ocean wave forecasts are available for a same region. These predictions may considerably differ, and to choose the best one is generally difficult task. The super-ensemble approach, which consists in merging different past observations into single multi-model prediction system, evaluated this study. During DART06 campaigns organized by NATO Undersea Research Centre, four forecasting systems were simultaneously run Adriatic Sea, significant height was...
Measurements collected during the Recognized Environmental Picture 2010 experiment (REP10) in Ligurian Sea are used to evaluate 3-D super-ensemble (3DSE) 72-hour temperature predictions and their associated uncertainty. The 3DSE reduces total Root-Mean-Square Difference by 12 32% respectively with reference ensemble mean most accurate of models when comparing regularly distributed surface data. When validating against irregularly situ observations, 3DSE, model lead similar scores....
In the framework of Interreg-IV 'PM-Lab' project a local-scale exercise was set up to evaluate air pollution in terms particulate matter (PM) within centre Liège, Belgium (pop. 190,000). Sixteen sites distributed on boulevard and its side streets were selected determine spatio-temporal variation PM concentration this traffic-dominated area. addition situ measurements numerical simulations performed by means AUSTAL2000. The performance Lagrangian dispersion model checked through some basic...
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Abstract. A method is presented to create an ensemble of perturbations that satisfies linear dynamical constraints. cost function formulated defining the probability each perturbation. It shown created with this approach take land-sea mask into account in a similar way as variational analysis techniques. The impact illustrated idealized configuration barrier island. Perturbations spatially variable correlation length can be also by approach. applied realistic West Florida Shelf M2 tidal...
Abstract. Risk situation can be mitigated by prevention measures, early warning tools and adequate monitoring of past experiences where Earth Observation geospatial analysis have an adding value. This paper discusses the potential use data especially Land Cover / Use map in addressing within three aspects risk assessment: danger, exposure vulnerability. Evidences harmful effects air pollution or heat waves are widely admitted should increase context global warming. Moreover, urban areas...
The increasing availability of low-cost sensors and open source projects make it easier than ever for a maker to build his own air quality node. Nonetheless, depending on one’s goal its related data objective, customize an existing project or specific printed circuit board may still be very useful. In the framework Outdoor Indoor Exposure project, portable mini-station has been developed, tested then used in two experiments: exposure assessment complementary network measurement. present...
Abstract. Nowadays, several operational forecasts of surface gravity waves are available for a same region through different forecasting systems. However, their results may considerably diverge, and choosing one single system among them is not an easy task. A recently developed approach consists in merging past observations into multi-model prediction system, called the super-ensemble. First implemented meteorology, method has also already been tested with success oceanography determining...