Enhancing the Potential Cooling Benefits of Urban Water Bodies
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Abstract
In Saitama, Japan, a series of experimental studies has been conducted inside an outdoor scale model canopy to find an effective design solution of water bodies for improving urban thermal environment and pedestrian comfort. Thus, the study result may help designers and planners to manage tradeoffs between the cooling effect demands, land-use limits and other design elements in urban environments. By modifying its physical properties, the present study shows a clear evidence of the mitigating capacity of urban water bodies. The result shows that generally, a bigger pond has greater cooling benefits. Nevertheless, by lowering the water temperature, the cooling benefit improved by 0.3 ̊C and 0.5 ̊C on average, as compared to natural pond and no-pond condition, respectively.
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References
Fritschen, L. J., Van Bavel, C. H. M. (1963). Evaporation from shallow water and related micrometeorological parameter. Journal of Applied Meteorology, 2, 407-411.
Hathway, E. A., Sharples, S. (2012). The interaction of rivers and urban form in mitigating the urban heat island effect: a UK case study. Building and Environment, 58, 14-22.
Jusuf, S. K., Wong, N.H., Syafii, N. I. (2009, December). Influence of water feature on temperature condition hot humid climate. In iNTA-SEGA 2009: bridging innovation, technology and tradition. Bangkok, Thailand.
Kanda, M., Kawai, T., Narita, K.I., Hagishima, A., & Moriwaki, R. (2006). A comprehensive outdoor scale model experiment for urban climate. In proceedings from The international conference on urban climate. Goteborg: International Association for Urban Climate.
Kanda, M. (2006). Progress in the scale modelling of urban climate: review. Theoretical and Applied Climatology, 84, 23-33.
Kanda, M., Kanega, M., Kawai, T., Moriwaki, R., & Sugawara, H. (2007). Roughness lengths for momentum and heat derived from outdoor urban scale models. Journal of Applied Meteorology and Climatology, 46, 1067–1079.
Kawai, T., & Kanda, M. (2010). Urban energy obtained from the comprehensive outdoor scale model experiment, part 1: basic features of the surface energy balance. Journal of Applied Meteorology and Climatology, 49, 1341 – 1359.
Kawai, T., & Kanda, M. (2010). Urban energy obtained from the comprehensive outdoor scale model experiment, part
2: comparisons with field data using an improved energy partition. Journal of Applied Meteorology and Climatology,
49, 1360 – 1376.
Liang, T. C., Hien, W. N., & Jusuf, S. K. (2014). Effect of vertical greenery on mean radiant temperature in the tropical urban environment. Landscape and Urban Planning, 127, 52 – 64.
Murakawa, S., Sekine, T., & Narita, K. I. (1991). Study of the effects of river on thermal environment in an urban area. Energy and Buildings, 15-16, 993-1001.
Nishimura, N., Nomura, T., Iyota, H., & Kimoto, S. (1998). Novel water facilities for creation of comfortable urban micrometeorology. Solar Energy, 64, 197–207.
Oke, T. R. (1987). Boundary layer climates. London, UK: Routledge.
Pearlmutter, D., Kruger, E. L., & Berliner, P. (2009). The role of evaporation in the energy balance of an open-air scaled urban surface. International Journal of Climatology, 29, 911-920.
Tang, R., & Etzion, Y. (2004). Comparative studies on the water evaporation rate from a wetted surface and that from a free water surface. Building and Environment, 39(1), 77-86.
Thorsson, S., Lindberg, F., Eliasson, I., & Holmer, B. (2007a). Different methods for estimating the mean radiant temperature in an outdoor urban setting. International Journal of Climatology, 27, 1983 – 1993.
Thorsson, S., Honjo, T., Lindberg, F., Eliasson, I., & Lim, E. M. (2007b). Thermal comfort and outdoor activity in Japanese urban public places. Environment and Behaviour, 39, 660-684.