Hendrik Wouters

Hendrik Wouters
Flemish Institute for Technological Research | VITO · Sustainable Land Use

PhD

About

65
Publications
20,460
Reads
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Introduction
I'm an atmospheric scientist. My research interests are the atmospheric boundary layer, extreme weather, climate change and their interactions with Earth's surface, urbanism and natural land management.
Additional affiliations
June 2019 - July 2021
Flemish Institute for Technological Research
Position
  • Researcher
January 2015 - December 2015
Ghent University
Position
  • PostDoc Position
October 2010 - present
KU Leuven
Position
  • PostDoc Position

Publications

Publications (65)
Article
Full-text available
Climate change and other anthropogenic threats are increasingly imperilling the diverse biomes of Central Africa, which are globally important for biodiversity, carbon storage and people's livelihoods. The objectives of this paper were to: (i) map the vulnerability of 100 socio-ecologically important priority tree species in Central Africa to clima...
Article
Full-text available
The 2013/2014 summer in Southeast Brazil was marked by historical unprecedented compound dry and hot (CDH) conditions with profound socio-economic impacts. The synoptic drivers for this event have already been analyzed, and its occurrence within the context of the increasing trend of CDH conditions in the area evaluated. However, so far, the causes...
Article
Full-text available
Global warming increases the number and severity of deadly heatwaves. Recent heatwaves often coincided with soil droughts that intensify air temperature but lower air humidity. Since lowering air humidity may reduce human heat stress, the net impact of soil desiccation on the morbidity and mortality of heatwaves remains unclear. Combining weather b...
Article
Full-text available
Rapid and uncontrolled urbanization in tropical Africa is increasingly leading to unprecedented socio-economical and environmental challenges in cities, particularly urban heat and climate change. The latter calls for a better representation of tropical African cities' properties relevant for urban climate studies. Here, we demonstrate the possibil...
Article
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Sub-daily precipitation extremes are high-impact events that can result in flash floods, sewer system overload, or landslides. Several studies have reported an intensification of projected short-duration extreme rainfall in a warmer future climate. Traditionally, regional climate models (RCMs) are run at a coarse resolution using deep-convection pa...
Article
Today, the vast majority of meteorological data are collected in open, rural environments to comply with the standards set by the World Meteorological Organization. However, these traditional networks lack local information that would be of immense value, for example, for studying urban microclimate, evaluating climate adaptation measures, or impro...
Article
Full-text available
The land surface influences the atmospheric boundary layer (ABL) through its impacts on the partitioning of available energy into evaporation and warming. Previous research on understanding this complex link focused mainly on site-scale flux observations, gridded satellite observations, climate modeling, and machine-learning experiments. Observatio...
Article
Full-text available
The increase in built surfaces constitutes the main reason for the formation of the Urban Heat Island (UHI), that is a metropolitan area significantly warmer than its surrounding rural areas. The urban heat islands and other urban-induced climate feedbacks may amplify heat stress and urban flooding under climate change and therefore to predict them...
Poster
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This research project aims to predict the potential shifts in the distribution of the endangered Golden-headed lion tamarin (Leontopithecus chrysomelas) in the Atlantic forests of Brazil, by modelling the species’ climatic suitability under scenarios of future climate change. Through this case study within the framework of the Copernicus Climate Ch...
Article
Full-text available
Climate reanalyses provide a plethora of global atmospheric and surface parameters in a consistent manner over multi-decadal timescales. Hence, they are widely used in many fields, and an in-depth evaluation of the different variables provided by reanalyses is a necessary means to provide feedback on the quality to their users and the operational c...
Preprint
Full-text available
This is a comment to the paper "Magnitude of urban heat islands largely explained by climate and population" by Manoli et al. (2019, Nature 573 p. 55-60; https://doi.org/10.1038/s41586-019-1512-9)
Article
The local outdoor climate and building characteristics influence the energy use of a building to an important extent. To design energy efficient and climate robust buildings, it is important to get insights into the energy demand over the building's service life from the early design phase onwards. This paper presents an overview of the different v...
Article
Full-text available
Convection-permitting models (CPMs) have been proven successful in simulating extreme precipitation statistics. However, when such models are used to study climate change, contrasting sensitivities with respect to resolution (CPM vs. models with parameterized convection) are found for different parts of the world. In this study, we explore to which...
Preprint
Full-text available
Abstract. Climate reanalyses provide a plethora of global atmospheric and surface parameters in a consistent manner over multi-decadal time scales. Hence, they are widely-used in many fields, and an in-depth evaluation of the different variables provided by reanalyses is a necessary means to provide feedback on the quality to their users and the op...
Article
Full-text available
This study aims at assessing and understanding the impact of recent urbanization on the (surface) urban heat island ([S]UHI) under clear‐sky conditions in a tropical African city using different sources of remotely sensed data sets together with an urban climate model (UCM). The observed SUHI during clear sky conditions is found to be about 4°C on...
Technical Report
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Report of the COSMO Consortium about the effects of the urban parametrization in the Cosmo Model over different EU cities.
Article
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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 thi...
Article
Full-text available
The coupling between soil, vegetation and atmosphere is thought to be crucial in the development and intensification of weather extremes, especially meteorological droughts, heat waves and severe storms. Therefore, understanding the evolution of the atmospheric boundary layer (ABL) and the role of land–atmosphere feedbacks is necessary for earlier...
Article
Full-text available
Owing to computational advances, an ever growing percentage of regional climate simulations are being performed at convection-permitting scale (CPS, or a horizontal grid scale below 4 km). One particular area where CPS could be of added value is in future projections of extreme precipitation, particularly for short timescales (e.g. hourly). However...
Article
Full-text available
The coupling between soil, vegetation and atmosphere is thought to be crucial in the development and intensification of weather extremes, especially meteorological droughts, heatwaves and severe storms. Therefore, understanding evolution of the atmospheric boundary layer (ABL) and the role of land–atmosphere feedbacks is necessary for earlier warni...
Article
Full-text available
The adverse impacts of urban heat and global climate change are leading policymakers to consider green and blue infrastructure (GBI) for heat mitigation benefits. Though many models exist to evaluate the cooling impacts of GBI, their complexity and computational demand leaves most of them largely inaccessible to those without specialist expertise a...
Chapter
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As buildings have a relatively long life span, it is important to consider climate change in energy performance modelling. Good quality weather data are needed to obtain accurate results. This chapter discusses widely used methods to predict future weather data (dynamical downscaling, stochastic weather generators and morphing) and provides an over...
Article
In order to reduce climate-related health issues in Sub-Saharan cities, a better understanding of the spatial and temporal processes affecting urban climates is required. In this context, this paper mobilizes the potential of urban climate modelling and remote sensing to improve the understanding of urban health risk variations in Sub-Saharan Afric...
Article
Full-text available
The adverse impacts of urban heat and global climate change are leading policy-makers to consider green and blue infrastructure (GBI) for heat mitigation benefits. Though many models exist to evaluate the cooling impacts of GBI, their complexity and computational demand leaves most of them largely inaccessible to those without specialist expertise...
Article
Full-text available
Recent observational studies have demonstrated the relevance of soil moisture heterogeneity and the associated thermally-induced circulation on deep convection and rainfall triggering. However, whether this dynamical mechanism further influences rainfall properties—such as rain volume or timing—has yet to be confirmed by observational data. Here, w...
Article
The CORDEX.be project created the foundations for Belgian climate services by producing high-resolution Belgian climate information that (a) incorporates the expertise of the different Belgian climate modeling groups and that (b) is consistent with the outcomes of the international CORDEX (“COordinated Regional Climate Downscaling Experiment”) proj...
Article
Full-text available
Urbanization leads to distinct meteorological features of urban environments, and one the best-known is the urban heat island (UHI) effect. For megacities, these features become mesoscale phenomena (scale ≥ 10 km) that are amplified by the tropospheric feedbacks, and have substantial implications on human well-being. For the first time, a three-dim...
Poster
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Comparison of model performances at 0.11° horizontal resolution over the African Great Lakes in Eastern Africa using the COSMO-CLM v5.0 model coupled to two different land use schemes : TERRA URB and Community Land Model
Article
Full-text available
Urban areas are usually warmer than their surrounding natural areas, an effect known as the urban heat island effect. As such, they are particularly vulnerable to global warming and associated increases in extreme temperatures. Yet ensemble climate-model projections are generally performed on a scale that is too coarse to represent the evolution of...
Poster
Full-text available
A substantial underestimation of nocturnal urban heat islands with an out-of-the-box setup of COSMO-CLM coupled to TERRA_URB is experienced for cities in Belgium. This is despite TERRA_URB’s satisfactory results of reproducing the urban surface energy balance during intensive urban observation campaigns for Toulouse, Basel and Singapore. Idealized...
Poster
This research is devoted to adaptation and verification of COSMO-CLM model, coupled with bulk urban canopy scheme TERRA_URB (Wouters et. al, 2016) for Moscow city and simulation of its urban heat island (UHI) phenomenon. Tuning of model configuration, calculation of the required urban surface parameters and comparison of modelling results with diff...
Article
Full-text available
To date, existing urban land surface models (ULSMs) have been mostly evaluated and optimised for mid- and high-latitude cities. For the first time, we provide a comparative evaluation of four ULSMs for a tropical residential neighbourhood in Singapore using directly measured energy balance components. The simulations are performed offline, for an 1...
Article
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This paper presents the Semi-empirical URban canopY parametrization (SURY) v1.0, which bridges the gap between bulk urban land-surface schemes and explicit-canyon schemes. Based on detailed observational studies, modelling experiments and available parameter inventories, it offers a robust translation of urban canopy parameters – containing the thr...
Code
SURY converts urban canopy parameters - containing the three-dimensional information such as from WUDAPT - into bulk parameters. It can be used with existing bulk urban land-surface schemes for providing canopy-dependent urban physics in atmospheric modelling with a low computation cost. Please use the following reference: Wouters, H., Demuzere, M....
Presentation
Full-text available
This presentation shows hindcasts, projections and the climatic drivers of future urban heat-stress in Belgium based on high-resolution regional land-use and climate modelling.
Article
Full-text available
This paper presents the Semi-empirical URban-canopY parametrization SURY, which bridges the gap between bulk urban land-surface schemes and explicit-canyon schemes. Based on detailed observational studies, modelling experiments and available parameter inventories, it offers a robust translation of urban canopy parameters containing the three-dimens...
Presentation
Full-text available
The mesoscale weather and climate model COSMO in Climate Mode (CCLM) is used in this study to investigate the impact of model resolution and urban parametrization on urban climate modeling. Two urban parameterizations with a different level of complexity are used, the urban land surface model TERRA-URB and the Double-Canyon Radiation Scheme (DCEP)....
Poster
Full-text available
TERRA_URB introduces an urban land-cover parametrization for the atmospheric system COSMO-(CLM) and allows for the representation of cities in both the COSMO consortium as well as the CLM community. TERRA_URB has been evaluated extensively for many European cities both in offline (Basel, Toulouse) and in online mode (Belgium, Berlin and Zürich). It...
Book
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'To what extent is climate change already visible in Flanders and Belgium?’ and ‘What are the expectations for the future?’, these are the central questions in the MIRA Climate Report 2015. An analysis of existing environmental indicators, supplemented with new indicators for drought and the urban heat island effect, provides the answer to the fir...
Research
Full-text available
De temperatuur in steden is doorgaans hoger dan in de nabijgelegen plattelandsgebieden; naar dit fenomeen wordt verwezen als het stedelijk hitte-eiland. Terwijl dit temperatuurverschil gemiddeld enkele °C bedraagt, kan het in bepaalde omstandigheden oplopen tot 7-8 °C en meer. Internationaal onderzoek heeft aangetoond dat, tijdens hittegolven, deze...
Book
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[Report in Dutch] ‘In welke mate is de klimaatverandering nu al zichtbaar in Vlaanderen en België?’ en ‘Wat zijn de verwachtingen voor de toekomst?’, dat zijn de belangrijkste onderzoeksvragen van het MIRA Klimaatrapport 2015. Analyse van bestaande milieu-indicatoren, aangevuld met nieuwe indicatoren voor droogte en het stedelijk hitte-eilandeffect...
Article
Full-text available
The regional non-hydrostatic climate model COSMO-CLM is increasingly being used on fine spatial scales of 1-5 km. Such applications require a detailed differentiation between the parameterization for natural and urban land uses. Since 2010, three parameterizations for urban land use have been incorporated into COSMOCLM. These parameterizations vary...
Conference Paper
Full-text available
– A new impervious water-storage parameterization (WSP) is presented for urban land. – This was implemented in TERRA-URB, a urban extension to COSMO(-CLM)’s surface module. – Water-storage parameters of the impervious surface at Toulouse centre are estimated. – Model accuracy for evapotranspiration is improved for two observation campaigns (CAPITOU...
Poster
Full-text available
In order to address urban climate at the regional scales, a new efficient urban land-surface parametrization TERRA_URB has been developed and coupled to the atmospheric numerical model COSMO-CLM. Hereby, several new advancements for urban land-surface models are introduced which are crucial for capturing the urban surface-energy balance and its sea...
Article
Full-text available
In order to improve the representation of the water balance in urban land-surface models, we present a new impervious water-storage parametrization that assumes a distribution of water reservoirs. It has been implemented in TERRA-URB, a new urban parametrization for COSMO-CLM’s standard land-surface module TERRA-ML. The water-storage capacity and t...
Article
Urban vegetation is generally considered as a key tool to modify the urban energy balance through enhanced evapotranspiration (ET). Given that vegetation is most effective when it is healthy, stormwater harvesting and retention strategies (such as water sensitive urban design) could be used to support vegetation and promote ET. This study presents...
Article
This paper addresses the seasonal dependency of the urban heat island (UHI) intensity and its climatic drivers at the mid-latitudes based on model-based sensitivity experiments over Belgium. Hereby, the used new urban land-surface model TERRA-URB employed in this study is tested for an annual observation dataset of the CAPITOUL campaign at a dense...
Conference Paper
Full-text available
De verbetering van stedelijke parameterisatie in regionale klimaatsmodellen Het belang van radiatieve en thermische eigenschappen, anthropogene warmte en wateropslag Doctoraat Hendrik Wouters (Mei 2014)
Thesis
Full-text available
Outdoor thermal comfort is essential to our health and that of the environment. For the last 200 years, the global population has increased sevenfold resulting in a strong urban expansion. Consequential changes in the landscape have lead to drastic climate modifications, which ranks among the most significant human impacts on the environment. Most...
Conference Paper
Full-text available
Changes in the landscape by urbanization have lead to drastic climate modifications, which ranks among the most significant human impacts on the environment. Most remarkable is that cities are exposed to higher air temperatures than those in the natural surroundings. This phenomenon - known as the urban heat island - causes serious health risks for...
Thesis
Full-text available
Outdoor thermal comfort is essential to our health and that of the environment. For the last 200 years, the global population has increased sevenfold resulting in a strong urban expansion. Consequential changes in the landscape have lead to drastic climate modifications, which ranks among the most significant human impacts on the environment. Most...
Article
Full-text available
The urban heat island (UHI) over Paris during summer 2006 was simulated using the Advanced Regional Prediction System (ARPS) updated with a simple urban parametrization at a horizontal resolution of 1 km. Two integrations were performed, one with the urban land cover of Paris and another in which Paris was replaced by cropland. The focus is on a fi...
Presentation
Full-text available
A recent review by Coutts et al. (2012) points out that to date the role of water in influencing urban climates through both irrigation and the support of urban vegetation receives less attention. Impervious urban surfaces prevent infiltration, and runoff is rapidly exported away from urban environments via the stormwater network. This produces a d...