Scientific project leaders: Dasaraden Mauree, Roberto Castello
Postdoctoral fellow: Silvia Coccolo
PhD students: Amarasinghage Tharindu Dasun Perera, Alina Walch, Dan Assouline
External: Vahid Nik (Chalmers/Lund Univ.), Nahid Mohajeri (Oxford Univ.)
The group focuses on understanding urban systems through their physical processes, the modelling of their dynamics and of the energy potential in order to improve their environmental sustainability. Multiple approaches and techniques are used: (i) statistical analysis of urban data collected in situ or secondary datasets from clouds and national databases, (ii) usage of data driven and machine learning techniques for forecasting, classification and automated recognition of urban elements, (iii) simulation of environmental phenomena and energy fluxes using advanced modelling tools.
More specifically, urban systems, generally consisting of several building blocks, are analysed either by simulation or by measurement to account for the numerous interactions happening between the elementary building objects and their environment. These interactions can be radiative (with the exchange of shortwave and longwave), conductive and convective (through the exchange of heat) but can also relate to the impact of built surfaces on the air flow and trapping of heat in urban areas. The group also works on the integration of decentralized energy systems in urban areas by looking at the energy flows.
Due to the complexity of urban areas, machine-learning techniques and simulation tools are developed and used to maintain a balance between accuracy and computational time. The different monitoring campaigns provide useful data to validate and improve the models. Our research focuses on modelling the potential of renewable technologies (solar, wind and geothermal) in the built environment in relation to the variable nature of energy resources. Using the existing large amount of data from local communities and at the national/regional level, complemented by satellite imagery and remote sensing, we aim at performing accurate spatio-temporal assessment of renewable energy potential. For this, we combine state-of-the-art deterministic models, machine Learning techniques and data-driven methods and we use them to model the uncertainty associated to the predictions and to forecast long-term evolutions of the urban systems.
Data and methodologies
- Measurement of Turbulence in an Urban Setup (MoTUS)
- Data collection campaigns
- Satellite imagery analysis (MeteoSuisse)
- Environmental and socio-economic secondary datasets
- National and local surveys
Machine learning techniques
- Estimate and forecast of RE potential at high spatial and temporal resolution
- Classification and clustering of roofs, building types, district archetypes
- Fast and efficient modelling of wind speed and stochastic phenomena in the built environment
- Prediction uncertainty on forecasted values
- Supervised and semi-supervised neural networks for satellite/aerial image processing
- Climate change and Urban climate
- Energy demand
- Outdoor thermal comfort
- Energy systems
Past research projects
S. Torabi Moghadam; S. Coccolo; G. Mutani; P. Lombardi; J.-L. Scartezzini et al. : A new clustering and visualization method to evaluate urban heat energy planning scenarios; Cities. 2019-05-19. DOI : 10.1016/j.cities.2018.12.007.
F. Guignard; D. Mauree; M. Lovallo; M. Kanevski; L. Telesca : Fisher–Shannon Complexity Analysis of High-Frequency Urban Wind Speed Time Series; Entropy. 2019-01-10. DOI : 10.3390/e21010047.
E. Honeck; R. Castello; B. Chatenoux; J.-P. Richard; A. Lehmann et al. : From a Vegetation Index to a Sustainable Development Goal Indicator: Forest Trend Monitoring Using Three Decades of Earth Observations across Switzerland; ISPRS International Journal of Geo-Information. 2018-11-24. DOI : 10.3390/ijgi7120455.
D. Assouline; N. Mohajeri; J. Scartezzini : Large-scale rooftop solar photovoltaic technical potential estimation using Random Forests; APPLIED ENERGY. 2018. DOI : 10.1016/j.apenergy.2018.02.118.
D. Mauree; N. Blond; A. Clappier : Multi-scale modeling of the urban meteorology: Integration of a new canopy model in the WRF model; Urban Climate. 2018-08-24. DOI : 10.1016/j.uclim.2018.08.002.
T. Q. Nguyen; D. Weitekamp; D. Anderson; R. Castello; O. Cerri et al. : Topology classification with deep learning to improve real-time event selection at the LHC. 2018.
D. Mauree; S. Coccolo; A. Perera; V. Nik; J.-L. Scartezzini et al. : A New Framework to Evaluate Urban Design Using Urban Microclimatic Modeling in Future Climatic Conditions; Sustainability. 2018-04-10. DOI : 10.3390/su10041134.
A. Perera; S. Coccolo; J.-L. Scartezzini; D. Mauree : Quantifying the impact of urban climate by extending the boundaries of urban energy system modeling; Applied Energy. 2018-04-24. DOI : 10.1016/j.apenergy.2018.04.004.
S. Coccolo; J. H. Kämpf; D. Mauree; J.-L. Scartezzini : Cooling potential of greening in the urban environment, a step further towards practice; Sustainable Cities and Society. 2018-01-31. DOI : 10.1016/j.scs.2018.01.019.
T. Chatelain; A. Perera; J.-L. Scartezzini; D. Mauree : Optimum dispatch of a multi-storage and multi-energy hub with demand response and restricted grid interactions; Energy Procedia. 2018-01-31. DOI : 10.1016/j.egypro.2017.12.434.
N. Mohajeri; D. Assouline; B. Guiboud; A. Bill; A. Gudmundsson et al. : A city-scale roof shape classification using machine learning for solar energy applications; Renewable Energy. 2018. DOI : 10.1016/j.renene.2017.12.096.
M. Le Guen; L. Mosca; A. T. D. Perera; S. Coccolo; N. Mohajeri et al. : Improving the energy sustainability of a Swiss village through building renovation and renewable energy integration; Energy and Buildings. 2018. DOI : 10.1016/j.enbuild.2017.10.057.
M. H. Bittel; A. T. D. Perera; D. Mauree; J.-L. Scartezzini : Locating multi energy systems for a neighborhood in Geneva using K-means clustering; Energy Procedia Special Issue CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.341.
K. Siraganyan; D. Mauree; A. Perera; J.-L. Scartezzini : Evaluating the need for energy storage to enhance autonomy of neighborhoods; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.464.
N. Mohajeri; D. Assouline; A. Gudmundsson; J.-L. Scartezzini : Effects of city size on the large-scale decentralised solar energy potential; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.372.
A. L. Kuehner; N. Mdeihli; S. Coccolo; A. Perera; N. Mohajeri et al. : Extending building integrated photovoltaics (BiPV) using distributed energy hubs. A case study in Cartigny, Switzerland; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.299.
S. Coccolo; D. Mauree; E. Naboni; J. H. Kaempf; J.-L. Scartezzini : On the impact of the wind speed on the outdoor human comfort: a sensitivity analysis; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.297.
D. Mauree; D. S.-H. Lee; E. Naboni; S. Coccolo; J.-L. Scartezzini : Localized meteorological variables influence at the early design stage; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.331.
A. Perera; D. Mauree; J.-L. Scartezzini : The energy hub concept applied to a case study of mixed residential and administrative buildings in Switzerland; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.342.
M. Le Guen; L. Mosca; A. Perera; S. Coccolo; N. Mohajeri et al. : Achieving energy sustainability in future neighborhoods through building refurbishment and energy hub concept: a case study in Hemberg-Switzerland; Energy Procedia - CISBAT 2017 International Conference Future Buildings & Districts - Energy Efficiency from Nano to Urban Scale. 2017. DOI : 10.1016/j.egypro.2017.07.320.
D. Mauree; S. Coccolo; J. Kaempf; J.-L. Scartezzini : Multi-scale modelling to evaluate building energy consumption at the neighbourhood scale; PLoS ONE. 2017. DOI : 10.1371/journal.pone.0183437.
A. T. D. Perera; V. M. Nik; D. Mauree; J.-L. Scartezzini : An integrated approach to design site specific distributed electrical hubs combining optimization, multi-criterion assessment and decision making; Energy. 2017. DOI : 10.1016/j.energy.2017.06.002.
A. T. D. Perera; V. M. Nik; D. Mauree; J.-L. Scartezzini : Electrical hubs: An effective way to integrate non-dispatchable renewable energy sources with minimum impact to the grid; Applied Energy. 2017. DOI : 10.1016/j.apenergy.2016.12.127.
D. Mauree; N. Blond; M. Kohler; A. Clappier : On the Coherence in the Boundary Layer: Development of a Canopy Interface Model; Frontiers in Earth Science. 2017. DOI : 10.3389/feart.2016.00109.
D. Assouline; N. Mohajeri; J.-L. Scartezzini : Quantifying rooftop photovoltaic solar energy potential: A machine learning approach; Solar Energy. 2017. DOI : 10.1016/j.solener.2016.11.045.
N. Mohajeri; G. Upadhyay; A. Gudmundsson; D. Assouline; J. Kämpf et al. : Effects of urban compactness on solar energy potential; Renewable Energy. 2016. DOI : 10.1016/j.renene.2016.02.053.
N. Mohajeri; A. Gudmundsson; J.-L. Scartezzini : Statistical-thermodynamics modelling of the built environment in relation to urban ecology; Ecological Modelling. 2015. DOI : 10.1016/j.ecolmodel.2015.03.014.
N. Mohajeri; A. Gudmundsson; J. R. French : CO2 emissions in relation to street-network configuration and city size; Transportation Research Part D: Transport and Environment. 2015. DOI : 10.1016/j.trd.2014.11.025.
N. Mohajeri; P. Poursistani; P. Poursistani; A. Gudmundsson : Quantitative analysis of structural changes during rapid urban growth; Journal of Urban Planning and Development. 2015. DOI : 10.1061/(ASCE)UP.1943-5444.0000213.
A. Gudmundsson; N. Lecoeur; N. Mohajeri; T. Thordarson : Dike emplacement at Bardarbunga, Iceland, induces unusual stress changes, caldera deformation, and earthquakes; Bulletin Of Volcanology. 2014. DOI : 10.1007/s00445-014-0869-8.
N. Mohajeri; A. Gudmundsson : Analyzing Variation in Street Patterns: Implications for Urban Planning; Journal of Architectural and Planning Research. 2014.
N. Mohajeri; A. Gudmundsson : The Evolution and Complexity of Urban Street Networks; Geographical Analysis. 2014. DOI : 10.1111/gean.12061.
N. Mohajeri; A. Gudmundsson : Quantifying the Differences in Geometry and Size Distributions of Buildings Within Cities; Nexus Network Journal: architecture and mathematics. 2014. DOI : 10.1007/s00004-014-0191-y.
N. Mohajeri; A. Gudmundsson : Street networks in relation to landforms: Implications for fast-growing cities; Journal of Geographical Sciences. 2014. DOI : 10.1007/s11442-014-1093-3.
A. Gudmundsson; N. Mohajeri : Entropy and order in urban street networks; Nature Scientific Reports. 2013. DOI : 10.1038/srep03324.
G. Upadhyay; D. Mauree; J. H. Kämpf; J.-L. Scartezzini : A multi-layer ground model to simulate outdoor surface temperature at urban scale; Energy and Buildings.
Publications under Vahid Nik
Publications under Jérôme Kaempf
Publications under Darren Robinson