Marjorie Musy

Marjorie Musy
Centre d’études et d’expertise sur les risques, l’environnement, la mobilité et l’aménagement | CEREMA · Ouest

PhD, HDR

About

158
Publications
49,432
Reads
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1,900
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Introduction
My research interests lie at the intersection between building physics (energy) and urban physics (urban climate). I have been working mostly on district scale microclimate and environmental performance modelling with a view to designing more sustainable urban forms. I have been coordinating the development of the urban microclimate simulation software SOLENE-microclimat and a major french research project, VegDUD. I'm currently the Scientific Director of the Nature4Cities H2020 project.
Additional affiliations
January 2011 - present
Institut de Recherche en Sciences et Techniques de la Ville
Position
  • Joint Manager
May 2000 - November 2016
École Nationale Supérieure d'Architecture Nantes
Position
  • Researcher, Joint Manager of IRSTV

Publications

Publications (158)
Article
Urban morphology relates to the form, structure, physical characteristics, and arrangement of buildings affecting the urban microclimate. As the morphological characteristics vary across the city, small units such as urban blocks are analysed for microclimate estimation. However, microclimatic analysis of all the blocks in a city is computationally...
Article
Understanding and managing hydrological and microclimate conditions is needed for the adap-tation of our cities to global warming. Evapotranspiration, or latent heat flux, plays a key role in heat mitigation strategies. Its modelling, as the modelling of its impact on the urban microcli-mate, remains a scientific challenge, especially during hot peri...
Article
Expected Global warming and heatwaves coupled with the urban heat island effect (UHI) can overheat indoor environments of free-floating buildings in temperate climate regions. Overheating assessment requires practitioners to use appropriate climate data and suitable measurement indices. The aim of this article is first, to propose a practical appro...
Preprint
Full-text available
Estimating the temperature field of a building envelope could be a time-consuming task. The use of a reduced-order method is then proposed: the Proper Generalized Decomposition method. The solution of the transient heat equation is then re-written as a function of its parameters: the boundary conditions, the initial condition, etc. To avoid a treme...
Article
Full-text available
Climate change is great challenge for current and newly built buildings. Nowadays, TMY weather file can be easily generated following the IPCC scenarios. Nevertheless, since these data are extrapolated with stochastic model from monthly mean values, they do not show a real pattern and do not include extreme events like heatwaves. In order to get mo...
Conference Paper
Full-text available
Existing state of the art often view passive strategies as a mean for energy efficiency, while their effect on summer thermal comfort in temperate climatic conditions has been given lesser attention. Assessing these strategies require practitioners to provide the right combination of tools; proper measurement indices; and perform simulations as clo...
Article
Full-text available
In the context of climate change, Nature-Based Solutions (NBSs), a recently developed concept, are increasingly considered as part of the adaptation strategies of the cities. Studies using expert models and methods (EMM) receive a great deal of scientific attention. Considering EMM increasing use, this study aims to perform an analysis of the repor...
Article
Full-text available
Purpose In urban areas, soil functions are deeply impacted by all human activities, e.g., water infiltration, carbon storage, and chemical substances degradation potential. In this context, nature-based solutions (NBS) are assumed to deliver multiple environmental benefits for soil quality improvement. The H2020 Nature4Cities project (N4C) offers t...
Chapter
The SOLENE-microclimat model has been developed to investigate the consequences of urban context on local microclimate and indoor thermal conditions. It is dedicated to modeling urban microclimate and building thermal behavior at the district scale. The modeling approach is based on the coupling of several modules: radiative, thermal, and CFD model...
Chapter
This chapter presents a review bringing a critical overview of the different ways in which the urban microclimate is currently considered in building design simulations. Therefore, different building energy models (BEMs) and urban climate models (UCMs) are presented. The ways these tools communicate are presented and the impact of UHI and the micro...
Article
Estimating the temperature field of a building envelope could be a time-consuming task. The use of a reduced-order method is then proposed: the Proper Generalized Decomposition method. The solution of the transient heat equation is then re-written as a function of its parameters: the boundary conditions, the initial condition, etc. To avoid a treme...
Article
Le Cerema, qui accompagne les collectivités dans l'aménagement durable de leur territoire, étudie les solutions de rafraîchissement urbain et livre quelques clés de compréhension sur leur fonctionnement et leur efficacité.
Article
The urban context is often simplified or neglected in Building Energy Models (BEMs) due to the difficulties of taking accurately into account all the heat fluxes emanating from the environment. Oversimplifying the urban context can impact the accuracy of the BEM predictions. Nevertheless, several approaches can be used to allow for the impact of th...
Conference Paper
A parametric soil model has been developed to improve the computational time of microclimate simulation tools. It combines the use of two methods: the Proper Generalized Decomposition and the Proper Orthogonal Decomposition. Offline, a learning process is required to build the model, before its use on-line. A methodology to select a short and repre...
Presentation
Full-text available
A parametric soil model has been developed to improve the computational time of microclimate simulation tools. It combines the use of two methods: the Proper Generalized Decomposition and the Proper Orthogonal Decomposition. Offline, a learning process is required to build the model, before its use online. A methodology to select a short and repres...
Conference Paper
Full-text available
The urban context is often simplified or neglected in building energy models (BEM) due to their incapacity to consider accurately all heat fluxes provided from the environment. Simplifying too much the urban context can have consequences on the accuracy of the BEM predictions. Many approaches exist to consider the impact of the urban environment on...
Article
Full-text available
Non-destructive thermal diagnosis is necessary for identification and quantification of structural defects and verification of construction performances. In this paper, we test different inverse heat transfer models to identify the thermal conductivity of a building's wall in its environment. The approaches proposed and used in this paper rely only...
Article
Full-text available
Shelters used to protect air temperature sensors from solar radiation induce a measurement error. This work presents a semi-empirical model based on meteorological variables to evaluate this error. The model equation is based on the analytical solution of a simplified energy balance performed on a naturally ventilated shelter. Two main physical err...
Article
Full-text available
Non-destructive thermal diagnosis is necessary for identification and quantification of structural defects and verification of construction performances. In this paper, we test different inverse heat transfer models to identify the thermal conductivity of a building's wall in its environment. The approaches proposed and used in this paper rely only...
Article
In a dense urban area, pavement watering could be a solution to mitigate the Urban Heat Island. So far, mainly experimental studies have been used to evaluate watering techniques. In this study, a soil model dedicated to pavement watering has been developed within the urban climate model SOLENE-microclimat. This watering model is presented and eval...
Article
Numerical simulation is a powerful tool for assessing the causes of an Urban Heat Island (UHI) effect or quantifying the impact of mitigation solutions on local climatic conditions. However, the numerical cost associated with such a tool is quite significant at the scale of an entire district. Today, the main challenge consists of achieving both a...
Conference Paper
Full-text available
RESUME. Afin d'adapter les bâtiments à leurs environnements et d'améliorer leurs conceptions, il semble pertinent d'apporter de la précision sur les données climatiques qui caractérisent le site d'implantation. En projet de bâtiment, des études de simulations thermiques dynamiques (STD), qui aident à la décision, sont régulièrement réalisées. Jusqu...
Article
Full-text available
A building influences its surrounding external environment, and its indoor environment is usually sensitive to its surroundings. In order to obtain a more accurate prediction of the indoor thermal behaviour of a building or a building stock, it is necessary to consider the interactions between the indoor and outdoor thermal environments. The modell...
Poster
Full-text available
To implement the concept of integrated design, an urban modelling, simulation and design platform was developed. It embeds a design framework built upon the strengths of parametric modelling and existing building performance simulation tools. The centralisation of the synthesis, analysis, evaluation and optimisation activities in a single interface...
Conference Paper
Full-text available
Cities all over the world are redefining their urban landscapes with new buildings integrated within existing environments. Due to the dearth of climate and context consideration, as well as the lack of interoperability of existing design tools, buildings are mostly designed as stand-alone entities which limits their potential utilisation of natura...
Book
The aim of this book is to deepen the knowledge of dynamic evolution of professional practices (recomposition of knowledge and know-how, inter-relations, strategic positioning) taking place at the time of the injunction to energy efficiency in the design field, construction and management of real estate. From their experience feedback, the challeng...
Article
Full-text available
Nous présentons dans cet article un essai de quantification de l'impression de confinement d’un piéton immergé dans la ville. Cette quantification repose sur un ensemble de qualités perceptuelles évoquées par (Ewing et al., 2006) ou (Dupagne et al., 1999) telles la mesure de l’« enfermement urbain », la « cohérence formelle », la « profondeur urbai...
Article
Full-text available
Nowadays, the study of the outside thermal comfort is more and more taking into consideration in the urban design process. In a climate change context, town planners have to find solutions to mitigate the effects of the global warming and to ensure that outside spaces designed in new districts will remain liveable.
Article
Full-text available
A full coupling between a CFD code, a thermo-radiative model and a building energy simulation model enables Solene-microclimat software to calculate both building thermal behavior and urban microclimate with the retroaction of buildings on microclimate. However, this full coupling is time consuming and it is legitimate to wonder if it is always nec...
Article
Full-text available
A lot of geographers, scientists believe that the current climate has changed. Especially, since the rapid increment of world's population. Indeed, rapid urbanization led to an increased demand of basic facilities, such as public transport services, hospitals, housing &, etc. Accordingly; the urban areas of cities have been expanded compared to rur...
Article
Full-text available
Following development and validation of the Solene-microclimat tool, the model was used to compare the impacts of various “greening strategies” on buildings’ summer energy consumption and indoor comfort. The studied strategies were greening walls, roofs, and ground (lawns). Solene-microclimat enables to simulate simultaneously a building's thermal...
Technical Report
Full-text available
L’extension sans précédent que les villes ont connue durant ces 50 dernières années a pour conséquence de concentrer de nombreux enjeux sur les espaces périurbains, et c’est tout particulièrement le cas dans la région des Pays de la Loire. Au-delà des évolutions sociales sur ces espaces, ces mutations posent de nombreuses questions scientifiques po...
Chapter
The survey of building professionals confronting energy-use issues has revealed, in effect, that some participants also make commitments at higher territorial scales. The exploratory survey of building professionals in France was conducted within a broad territorial scope. This chapter first presents the outline of this survey as the methods of inv...
Chapter
The current professional uneasiness and some of the obstacles to the implementation of good energy performance and the ecological approaches to building construction are paradoxically related to standardization. The professionals stress the difficulties associated with the increasing legal, regulatory, budgetary and time constraints. Indeed, they a...
Chapter
This chapter focuses on an analysis of the characteristics of the professionals who have stood out as pioneers in the field, their trajectories, and their experience. International career trajectories and a high level of geographic mobility are noteworthy features of the pioneers. The coherence between the professional positions and personal positi...
Book
Les villes du futur ressembleront-elles au paradis sur Terre, assurant bien-être et santé à tous les citadins ? La question peut surprendre. Pourtant de Zurich à Tokyo, en passant par Nantes ou Lyon, chercheurs, entreprises et simples citoyens travaillent main dans la main pour inventer les métropoles du futur où il fait bon vivre… Grâce au concour...
Article
The main purpose of this study is to evaluate an urban soil model that will accurately reproduce the heat flux into urban soil, which has an influence on the urban heat island effect, for typical urban land use such as a car park. After a complete literature review, a sensitivity study is carried out on a large number of parameters: material proper...
Article
Urban air temperature varies along time and space. This contribution proposes a methodology to model these variations from empirical models. Four air temperature networks are implemented in three west France cities. The period [1.4–1.8] of a normalized night is investigated. Three empirical models are established, in order to predict temporal and s...
Article
“Interdisciplinarity” is one of the most “fashionable” words to be found in contemporary energy research. The hype and the fuzziness that can characterise its use conceals a bright promise for research: the possibility of opening up new research perspectives, of finding new answers, but also of raising new questions. In this article, we explore int...
Article
Full-text available
The Town Energy Balance (TEB) model has been refined and improved in order to explicitly represent street trees and their impacts on radiative transfer: a new vegetated stratum on the vertical plane, which can shade the road, the walls, and the low vegetation has been added. This modification led to more complex radiative calculations, but has been...
Conference Paper
Full-text available
The goal of this study is to bring out the efficiency of district landscaping on local urban heat island mitigation. Two cooling strategies at the district scale are evaluated through the coupled effect computation of microclimate and building energy demand: vegetation (trees, green walls and roofs) and high albedo values (cool roofs and façades)....
Conference Paper
Full-text available
A lot of geographers, scientists believe that the current climate has changed. Especially, since the rapid increment of world's population. Indeed, rapid urbanization led to an increased demand of basic facilities, such as public transport services, hospitals, housing &, etc. Accordingly; the urban areas of cities have been expanded compared to rur...
Conference Paper
Full-text available
Following development and validation of the Solene-microclimat tool, the model was used to compare the impacts of various "greening strategies" on buildings' summer energy consumption and indoor comfort. The studied strategies were greening walls, roofs, and ground (lawns). Solene-microclimat enables to simulate simultaneously a building's thermal...
Conference Paper
Full-text available
A full coupling between a CFD code, a thermo-radiative model and a building energy simulation model enables Solene-microclimat software to calculate both building thermal behavior and urban microclimate with the retroaction of buildings on microclimate. However, this full coupling is time consuming and it is legitimate to wonder if it is always nec...
Conference Paper
Full-text available
In this century, the world is facing a rapid urban growth, most of them (about 4.9 billion) will live in urban areas. These changes increased the use of land and reduced the green areas. As a result, our cities will be warmer climates compared to their surroundings. One of the main reasons behind these changes is the changes in the construction mat...
Article
Full-text available
The TEB model has been refined and improved in order to explicitly represent street trees and their impacts on radiative transfers: a new vegetated stratum on the vertical plane, which can superimpose to road and low vegetation has been added. This modification has obviously complexified the radiative calculations, but has been done with a concern...
Presentation
Full-text available
25 slides presentation of the results related to climate of the VegDUD project
Article
Full-text available
Urban Heat Island (UHI) is defined as the air temperature difference between the city and its surrounding areas. This phenomenon varies spatially (depending on the type of urban fabric constituting each neighborhood) and temporally (depending on the time of the day, on the season and on the weather conditions). This contribution proposes a methodol...