Publications
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Precognition and the Metascalar Nature of Information. Vrije Universiteit Brussel
We introduce the concept of scale into the derivation of information, through the device of a model hierarchy. This leads to a comparison of information with both Ivan Havel's perspectives of reality and Charles Peirce's semiotics. We conclude that the most valid formulation of information is always subjective, and that it depends in the first instance on precognitive processing.
Sensitivity analysis of mesoscale simulations to physics parameterizations over the Belgian North Sea using Weather Research and Forecasting – Advanced Research WRF (WRF-ARW) Vrije Universiteit Brussel
The Weather Research and Forecasting (WRF) model offers a multitude of physics parameterizations to study and analyze the different atmospheric processes and dynamics that are observed in the Earth's atmosphere. However, the suitability of a WRF model setup is known to be highly sensitive to the type of weather phenomena and the type and combination of physics parameterizations. A multi-event sensitivity analysis is conducted to identify general ...
Quantifying local and mesoscale drivers of the urban heat island of Moscow with reference and crowdsourced observations Ghent University
Urban climate features, such as the urban heat island (UHI), are determined by various factors characterizing the modifications of the surface by the built environment and human activity. These factors are often attributed to the local spatial scale (hundreds of meters up to several kilometers). Nowadays, more and more urban climate studies utilize the concept of the local climate zones (LCZs) as a proxy for urban climate heterogeneity. However, ...
A convection-permitting model for the Lake Victoria Basin : evaluation and insight into the mesoscale versus synoptic atmospheric dynamics Ghent University KU Leuven Vrije Universiteit Brussel
Simultaneous assessment of the summer urban heat island in Moscow megacity based on in situ observations, thermal satellite images and mesoscale modeling Ghent University
This study compares three popular approaches to quantify the urban heat island (UHI) effect in Moscow megacity in a summer season (June-August 2015). The first approach uses the measurements of the near-surface air temperature obtained from weather stations, the second is based on remote sensing from thermal imagery of MODIS satellites, and the third is based on the numerical simulations with the mesoscale atmospheric model COSMO-CLM coupled ...
Tracking mesoscale convective systems in the Sahel : relation between cloud parameters and precipitation Ghent University KU Leuven
Although mesoscale convective systems (MCSs) are the main source of precipitation in the semi-arid Sahel region, the relationship between MCS characteristics and their generated precipitation remain unclear. However, a thorough understanding of this relation is essential to work towards a classification scheme for MCSs and eventually to improve quantitative precipitation estimates in which cloud parameters are used as proxy variables for the ...
Mesoscale modeling of concrete time-dependent behavior Ghent University
The EPiGRAM Project: Preparing Parallel Programming Models for Exascale KU Leuven
© Springer International Publishing AG 2016. EPiGRAM is a European Commission funded project to improve existing parallel programming models to run efficiently large scale applications on exascale supercomputers. The EPiGRAM project focuses on the two current dominant petascale programming models, message-passing and PGAS, and on the improvement of two of their associated programming systems, MPI and GASPI. In EPiGRAM, we work on two major ...
Transition of HPC towards exascale computing Ghent University
The US, Europe, Japan and China are racing to develop the next generation of supercomputers – exascale machines capable of 10 to the 18th power calculations a second – by 2020. But the barriers are daunting: the challenge is to change the paradigm of high-performance computing. The 2012 biennial high performance workshop, held in Cetraro, Italy in June 2012, focused on the challenges facing the computing research community to reach exascale ...