How To Model Urban Climate From A Model
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1 ICUC9-9th International Conference on Urban Climate jointly with 12th Symposium on the Urban Environment Urban Multi-scale Environmental Predictor An integrated tool for urban climatology and climate sensitive planning applications Fredrik Lindberg 1, Sue Grimmond 2, Shiho Onomura 1 and Leena Järvi 3 1 Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; 2 Department of Meteorology, University of Reading, Reading, United Kingdom; 3 Department of Physics, University of Helsinki, Finland
2 Background Communication between the research community and practitioners/planners/stakeholders is a challenge Planners use/want maps Planners want/need to investigate issues occurring at different scales
3 Background Urban climate influenced by processes at a range of different scales. Frankfurt am Main, Germany Appropriate scale based on application. Important to couple and understand the different scale dependent processes. Göteborg, Sweden
4 Overview of UMEP Consists of a coupled modelling system which combines state of the art 1D and 2D models. System contained within UMEP is designed to run from the street canyon to city scale ( m). Restructuring of program code necessary
5 The Modelling system THE SOLWEIG MODEL (Solar and LongWave Environmental Irradiance Geometry) (Lindberg et al and Lindberg & Grimmond 2011) - Simulates spatial variations of 3D radiation fluxes and T mrt in complex urban settings - T mrt derived by modelling shortwave and longwave radiation fluxes - Sky view factor and shadow patterns are a central elements when estimating the fluxes Mean radiant temperature (T mrt ) = A sum of all shortwave and longwave radiation fluxes to which the human body is exposed. Digital Surface Model, Göteborg (Sweden)
6 The Modelling system THE SOLWEIG MODEL (Solar and LongWave Environmental Irradiance Geometry) (Lindberg et al and Lindberg & Grimmond 2011) - Simulates spatial variations of 3D radiation fluxes and T mrt in complex urban settings - T mrt derived by modelling shortwave and longwave radiation fluxes - Sky view factor and shadow patterns are a central elements when estimating the fluxes Mean radiant temperature (T mrt ) = A sum of all shortwave and longwave radiation fluxes to which the human body is exposed. T mrt at 3 pm, 23 rd of May 2010
7 SUEWS simulates urban energy and water balances using information on surface cover and basic meteorology Several sub-models for Q*, ΔQ s, Q F, I e Q H is estimated as a residual Surface divided into seven interacting surface types Latest version: v2015a beta (Ward et al. 2015) The Modelling system SUEWS (Surface Urban Energy and Water Balance Scheme) (e.g. Grimmond and Oke 1991, Grimmond et al. 1991, Offerle et al. 2003, Loridan et al. 2010, Järvi et al. 2011, Järvi et al. 2014)
8 The Modelling system LUCY (Large scale Urban Consumption of energy model) (Allen et al. 2010, Lindberg et al. 2013) LUCY simulates all components of anthropogenic heat flux (Q F ) from global to neighborhood scale. It can be applied to any part of the world. LUCY operates at multiple scales specified by input data. Data could be replaced and refined based on application. Forcing data includes population, energy consumption, traffic numbers and air temp. Q F in Greater London area, 2005 Day- and nighttime population density in London
9 The Modelling system existing coupling BLUEWS (Boundary Surface Urban Energy and Water Balance Scheme) (Onomura et al. 2014) A convective boundary model is coupled to the SUEWS scheme to estimate daytime temperature and humidity based on the surface energy fluxes The CBL modelling scheme (Cleugh and Grimmond, 2001)
10 The Modelling system planned coupling BLUEWS Intra urban nighttime T a cooling rate scheme will be included in BLUEWS. Scheme based on empirical relations using weather parameters and urban geometry. Can be used to obtain initial parameters for the daytime CBL scheme Conceptual cooling rate model (Holmer et al. 2007)
11 The Modelling system planned coupling Air temperature and humidity is used as forcing input to SOLWEIG SOLWEIG output will be used to improve outgoing radiation fluxes used in SUEWS/BLUEWS Sun/shade patterns 1130, 3 June. Barbican London
12 The Modelling system planned coupling Air temperature will be forced into LUCY LUCY will be able to provide more detailed information on anthropogenic heat flux to the modelling system New features will be included in the Q F modelling e.g. detailed traffic information and/or agent based modelling Anthropogenic heat flux (Q F ) in Hong Kong using high resolution population data (Yogeswaran, 2014)
13 The interface (API) UMEP will be widely accessable to researchers and practitioners Graphical User Interface needed GIS-based approach needed Many types of formats and data information need to be processed Interface needed for pre- and post processing Interface will provide users with tips, recommendations and documentation
14 The interface (API) Instead of starting from the beginning QGIS will be used as API/GIS The QGIS GUI, version 2.10
15 QGIS makes is possible to: The interface (API) make use of all the mapping capabilities within the API (e.g. OGR/GDAL) make use of all the geoprocessing capabilities within the API (e.g. GRASS, SAGA) extend the API by developing new components (as plugins and core plugins) be OS independent Quantum GIS founded: QGIS: an official project of OSGeo (osgeo.org). Provides a growing number of capabilities provided by core functions and plugins. Can visualize, manage, edit, analyze data, and compose printable maps. The Plugin manager in QGIS 2.4
16 The UMEP plugin The UMEP plugin consist of three separate parts: Pre-processor Input data preparation Grid generation for sub-grid modelling Simple weather generator to produce example input data Generation of general morphology info such as sky view factor, PAI, FAI, H/W-ratios etc. Processor Execution of the actual modelling system Models can run separately or coupled Models can be run with the focus on time, space or in combination Post-processor Possibilities to visualize output data Map generation (QGIS) Averaging and statistical analysis of output data UMEP (beta version 0.1) together with installation instruction and a test dataset is available from the UMEP repository: (64-bit Windows)
17 Short demonstration
18 Short demonstration
19 Short demonstration
20 Short demonstration
21 Short demonstration
22 Short demonstration
23 Short demonstration
24 Short demonstration
25 Invitation to participate The open source concept of UMEP makes it possible for everyone to contribute. Contribute: o as a USER report issues and suggest improvements o as a DEVELOPER fix bugs, general improvement, develop new tools o to the DOCUMETATION write manuals, TODOs o Contribute to data management UMEP (beta version 0.1) is available for download from: (64-bit Windows)
26 Summary Concept of UMEP (Urban Multi-scale Environmental Predictor), an integrated tool for urban climatology and climate sensitive planning applications is presented. Tool consists of a coupled modelling system which combines state of the art 1D and 2D models related to the processes essential for scale independent urban climate estimations UMEP is available as a plugin in QGIS, which is an OSGIS API Invitation to participate in an open source project Thank you
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