P3.5
Monitoring and management of urban heat island: Application to urban planning process
PAPER WITHDRAWN
Toshiaki Ichinose, NIES, Tsukuba, Ibaraki, Japan; and M. Takehiko and N. Kiyoshi
Monitoring of urban heat island phenomena were performed during three years (1997-1999) in Asian three cities (Tokyo, Shanghai and Bangkok) and guidelines for urban planning in the future were drawn considering the data taken in the monitoring and their numerical simulation with climate models.
1) Effect of a three-dimensional replacement of urban activity on urban thermal environment was evaluated in viewpoint of reduction and relocation of anthropogenic heat emission and modification of building width and height associating drag effect on wind field. Concentration of urban activity gave a great impact on urban thermal environment in daytime.
2) Vegetation coverage estimated with NDVI data taken by satellite (JERS-1) was applied to those numerical simulation. This method is available to evaluate effect of small scale green like trees in residences. The authors' greening scenario gave 1 Celsius degree of thermal environmental mitigation around the central Tokyo. This result shows around 5 % reduction of energy consumption for space cooling in a typical summer day in July.
3) In Asian three cities, introduction of see breeze in daytime is regarded effective for mitigation of urban thermal stress, while mitigation of nocturnal thermal stress and air pollution by a nocturnal cold drainage air flow is regarded important in German inland cities. Integrating the authors' monitoring and computing results, especially pattern of land use, estimated ground surface temperature and dominant wind flow, ventilation strategies at calm and clear day in the hottest season were expressed in the style of "Klimaatlas" generally drawn in German cities. Environmental assessment of re-development plan for Shirahige-Nishi district, eastern Tokyo was actually performed considering the authors' monitoring and computing results.
These results showed a basic routine on urban climate analysis (evaluation of anthropogenic heat, building structure and vegetation coverage in viewpoint of urban thermal environment, and recommendation for urban planning process) with its availability.
Poster Session 3, UHI and Urban Humidity
Wednesday, 22 May 2002, 3:00 PM-5:00 PM
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