Skip to main content
Log in

Modeling urban microclimate to ameliorate thermal sensation conditions in outdoor areas in Athens (Greece)

  • Research Article
  • Building Thermal, Lighting, and Acoustics Modeling
  • Published:
Building Simulation Aims and scope Submit manuscript

Abstract

Previous research that conducted in three typical public areas in Athens showed that the acceptable air temperature range that determines thermal comfort varies among 17.0–21.0 °C and 26.0–32.0 °C for the cool and the warm period of the year, respectively. The present research goes further and determines the acceptable environmental conditions via two wide acknowledged thermal indices, which are PET and UTCI, in order to evaluate, whether or not, thermal comfort conditions are presented in three typical outdoor urban areas of a Mediterranean city, like Athens. Thus, environmental model ENVI-met 3.1 was applied to calculate the daily microclimatic variation of the three examined areas for the same dates, one typical for the warm period and one typical for the cool period. Thermal sensation conditions were then assessed by the indices. Results showed that the examined areas approach the acceptable environmental conditions only for the cool day, whereas an assumed urban design scenario was able only to ameliorate thermal discomfort but not to reach thermal comfort during a hot day.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Ahmed KS (2003). Comfort in urban spaces: Defining the boundaries of outdoor thermal comfort for the tropical urban environments. Energy and Buildings, 35: 103–110.

    Article  Google Scholar 

  • Ali-Toudert F (2005). Dependence of outdoor thermal comfort on street design in hot and dry climate. PhD Thesis, Universitätsbibliothek Freiburg, Germany.

    Google Scholar 

  • Ali-Toudert F, Mayer H (2006). Numerical study on the effects of aspect ratio and orientation of an urban street canyon on outdoor thermal comfort in hot and dry climate. Building and Environment, 41: 94–108.

    Article  Google Scholar 

  • Ali-Toudert F, Mayer H (2007). Effects of asymmetry, galleries, overhanging facades and vegetation on thermal comfort in urban street canyons. Solar Energy, 81: 742–754.

    Article  Google Scholar 

  • ASHRAE (2004). ASHRAE Standard 55-2004, Thermal Environmental Conditions for Human Occupancy. Atlanta: American Society of Heating, Refrigerating and Air-Conditioning Engineers.

    Google Scholar 

  • Blazejczyk K, Epstein Y, Jendritzky G, Staige H, Tinz B (2012). Comparison of UTCI to selected thermal indices. International Journal of Biometeorology, 56: 515–553.

    Article  Google Scholar 

  • Bruse M (1999). The influences of local environmental design on microclimate. PhD Thesis, University of Bochum, Germany. (in German)

    Google Scholar 

  • Bruse M (2004). ENVI-met 3.0: Updated model overview, Bochum, Germany. Available at http://www.envi-met.com, accessed 08 Aug 2006.

    Google Scholar 

  • Bruse M (2007). Simulating human thermal comfort and resulting usage patterns of urban open spaces with a Multi-Agent System. In: Wittkopf St, Tan BK, eds, Proceedings of 24th International Conference on Passive and Low Energy Architecture (PLEA), pp.699–706.

    Google Scholar 

  • Charalampopoulos I, Tsiros I, Chronopoulou-Sereli A, Matzarakis A (2013). Analysis of thermal bioclimate in various urban configurations in Athens, Greece. Urban Ecosystems, 16: 217–233.

    Article  Google Scholar 

  • Charalampopoulos I, Tsiros I, Chronopoulou-Sereli A, Matzarakis A (2015). A note on the evolution of the daily pattern of thermal comfort related microclimatic parameters in small urban sites in Athens. International Journal of Biometeorology, 59: 1223–1236.

    Article  Google Scholar 

  • Cheng V, Ng E, (2006). Thermal comfort in urban open spaces for Hong Kong. Architectural Science Review, 49: 236–242.

    Article  Google Scholar 

  • Christopoulou V, Tsiros I (2014). An application of the numerical microclimatic model ENVI-met to evaluate thermal and bioclimatic conditions in an urban cluster with a vegetated courtyard. In: Proceedings of 12th International Conference of Meteorology, Climatology and Physics of the Atmosphere, Heraklion, Greece, pp. 192–197.

    Google Scholar 

  • Declet-Barreto J, Brazel A, Martin C, Chow W, Harlan S (2013). Creating the park cool island in an inner-city neighborhood: Heat mitigation strategy for Phoenix, AZ. Urban Ecosystems, 16: 617–663.

    Article  Google Scholar 

  • Eliasson I, Knez I, Westerberg U, Thorsson S, Lindberg F (2007). Climate and behaviour in a Nordic city. Landscape and Urban Planning, 82: 72–84.

    Article  Google Scholar 

  • Emmanuel R, Rosenlund H, Johansson E (2007). Urban shading—A design option for the tropics? A study in Colombo, Sri Lanka. International Journal of Climatology, 27: 1995–2004.

    Article  Google Scholar 

  • Fahmy M, Sharples S, (2009). On the development of an urban passive thermal comfort system in Cairo, Egypt. Building and Environment, 45: 345–357.

    Article  Google Scholar 

  • Fahmy M, Sharples S, Eltrapolsi A (2009). Dual Stage simulations to study the microclimatic effects of trees on thermal comfort in a residential building, Cairo, Egypt. In: Proceedings of 11th International IBPSA Building Simulation Conference, Glasgow, UK.

    Google Scholar 

  • Fanger PO (1972). Thermal Comfort: Analysis and Applications in Environmental Engineering. New York: McGraw-Hill.

    Google Scholar 

  • Fiala D, Lomas KJ, Stohrer M (2001). Computer prediction of human thermoregulatory and temperature responses to a wide range of environmental conditions. International Journal of Biometeorology, 45: 143–159.

    Article  Google Scholar 

  • Givoni B, Noguchi M (2004). Outdoor comfort responses of Japanese persons. In: Proceedings of 21st Conference on Passive and Low Energy Architecture (PLEA), Eindhoven, The Netherlands.

    Google Scholar 

  • Höppe P (1984). Die Energiebilanz des Menschen. University of Munich. (in German)

    Google Scholar 

  • Höppe P (1993). Heat balance modelling. Experientia, 49: 741–746.

    Article  Google Scholar 

  • Höppe P (1999). The physiological equivalent temperature—A universal index for the biometeorological assessment of the thermal environment. International Journal of Biometeorology, 43: 71–75.

    Article  Google Scholar 

  • Houghton JT (1977). The Physics of the Atmosphere. New York: Cambridge University Press.

    MATH  Google Scholar 

  • Jendritzky G, Havenith G, Weihs P, Batchvarova E (2009). Towards a universal thermal climate index UTCI for assessing the thermal environment of the human being. Final Report COST Action 730.

    Google Scholar 

  • Johansson E, Yahia MW (2011). Subjective thermal comfort in urban spaces in the warm-humid city of Guayaquil, Ecuador. In: Proceedings of Conference on Passive and Low Energy Architecture (PLEA), Louvain-la-Neuve, Belgium.

    Google Scholar 

  • Knez I, Thorsson S (2006). Influences of culture and environmental attitude on thermal, emotional and perceptual evaluations of a public square. International Journal of Biometeorology, 50: 258–268

    Article  Google Scholar 

  • Lin TP, Matzarakis A, Hwang R (2010). Shading effect on long-term outdoor thermal comfort. Building and Environment, 45: 213–221.

    Article  Google Scholar 

  • Matzarakis A, Rutz F, Mayer H (2010). Modelling radiation fluxes in simple and complex environments—Basics of the RayMan model. International Journal of Biometeorology, 54: 131–139

    Article  Google Scholar 

  • Matzarakis A, Rutz F, Mayer H (2007). Modeling radiation fluxes in simple and complex environments—Application of the RayMan model. International Journal of Biometeorology, 51: 323–334.

    Article  Google Scholar 

  • Matzarakis A (2000). Assessing climate for tourism purposes: Existing methods and tools for the thermal complex. University of Freiburg.

    Google Scholar 

  • Matzarakis A, Mayer H, Iziomon MG (1999). Applications of a universal thermal index: Physiological equivalent temperature. International Journal of Biometeorology, 43: 76–84.

    Article  Google Scholar 

  • Matzarakis A, Mayer H (1997). Heat stress in Greece. International Journal of Biometeorology, 41: 34–39.

    Article  Google Scholar 

  • Mayer H, Hö ppe P (1987). Thermal comfort of man in different urban environments. Theoretical and Applied Climatology, 38: 43–49.

    Article  Google Scholar 

  • Nastos PT, Matzarakis A (2013). Human Bioclimatic Conditions, Trends, and Variability in the Athens University Campus, Greece. Advances in Meteorology, 2013: Article ID976510.

    Google Scholar 

  • Nikolopoulou M, Lykoudis S (2006). Thermal comfort in outdoor urban spaces: Analysis across different European countries. Building and Environment, 41: 1455–1470.

    Article  Google Scholar 

  • Oliveira S, Andrade H (2007). An initial assessment of the bioclimatic comfort in an outdoor public space in Lisbon. International Journal of Biometeorology, 52: 69–84.

    Article  Google Scholar 

  • Pantavou K, Theoharatos G, Santamouris M, Asimakopoulos D (2013). Outdoor thermal sensation of pedestrians in a Mediterranean climate and a comparison with UTCI. Building and Environment, 66: 82–95.

    Article  Google Scholar 

  • Santamouris M, Papanikolaou N, Koronakis I, Livada I, and Asimakopoulos D (1999). Thermal and air flow characteristics in a deep pedestrian canyon under hot weather conditions. Atmospheric Environment, 33: 4503–4521.

    Article  Google Scholar 

  • Shashua-Bar L, Tsiros I, Hoffman ME (2012). Passive cooling design options to ameliorate thermal comfort in urban streets of a Mediterranean climate (Athens) under hot summer conditions. Building and Environment, 57: 110–119.

    Article  Google Scholar 

  • Spangenberg J, Shinzato P, Johansson E, Duarte D (2008). Simulation of the influence of vegetation on microclimate and thermal comfort in the city of São Paulo, Revista SBAU, 3(2): 1–19.

    Google Scholar 

  • Tseliou A, Tsiros I, Nikolopoulou M, Papadopoulos G (2015). Outdoor thermal sensation in a Mediterranean climate (Athens): The effect of selected microclimatic parameters. Architectural Science Review, doi: 10.1080/00038628.2015.1028022.

    Google Scholar 

  • Tseliou A, Tsiros IX, Nikolopoulou M, Psyloglou V, Lykoudis S (2013). Aspects of human thermal preferences in the urban outdoor environment of Athens: A preliminary study. In: Proceedings of 13th International Conference of Environmental Science and Technology, Athens, Greece.

    Google Scholar 

  • Tseliou A, Tsiros I, Lykoudis S, Nikolopoulou M (2010). Application and evaluation of typical biometeorological indices for the estimation of thermal comfort during the warm period of the year. In: Proceedings 10th Panhellenic (International) Conference of Meteorology, Climatology and Atmospheric Physics, Patras, Greece, pp. 345–352.

    Google Scholar 

  • Tsiros IX, Hoffman ME (2014). Thermal and comfort conditions in a semi-closed rear wooded garden and its adjacent semi-open spaces in a Mediterranean climate (Athens) during summer. Architectural Science Review, 57: 63–82

    Article  Google Scholar 

  • Tsiros I, Efthimiadou A, Hoffman ME, Tseliou A (2012). Summer thermal environment and human comfort in public outdoor urban spaces in a Mediterranean climate (Athens). In: Proceedings of 28th International Conference on Passive and Low Energy Architecture (PLEA), Lima, Peru.

    Google Scholar 

  • Walton D, Dravitzki V, Donn M (2007). The relative influence of wind, sunlight and temperature on user comfort in urban outdoor spaces. Building and Environment, 42: 3166–3175.

    Article  Google Scholar 

  • Wang Y, Bakker F, de Groot R, Wortche H, Leemans R (2015). Effects of urban trees on local outdoor microclimate: Synthesizing field measurements by numerical modelling. Urban Ecosystems, 18: 1305–1331.

    Article  Google Scholar 

  • Weihs P, Staiger H, Tinz B, Batchvarova E, Rieder H, Vuilleumier L, Maturilli G, Jendritzky G (2011). The uncertainty of UTCI due to uncertainties in the determination of radiation fluxes derived from measured and observed meteorological data. International Journal of Biometeorology, 56: 537–555.

    Article  Google Scholar 

  • Yahia MW, Johansson E (2012). Evaluating the behavior of different thermal indices by investigating various outdoor urban environments in the hot dry city of Damascus, Syria. International Journal of Biometeorology, 57: 615–663.

    Article  Google Scholar 

  • Yang W, Wong NH, Jusuf SK (2013). Thermal comfort in outdoor urban spaces in Singapore. Building and Environment, 59: 426–435.

    Article  Google Scholar 

  • Yu C, Hien, WN (2006). Thermal benefits of city parks. Energy and Buildings, 38: 105–120.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Ioannis X. Tsiros.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Tseliou, A., Tsiros, I.X. Modeling urban microclimate to ameliorate thermal sensation conditions in outdoor areas in Athens (Greece). Build. Simul. 9, 251–267 (2016). https://doi.org/10.1007/s12273-016-0270-y

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12273-016-0270-y

Keywords

Navigation