Abstract

An urban cooling island (UCI) involves an areathat has a lower temperature compared with its surroundings.The UCI effect is created from shading effects by urban trees orevapotranspiration effects by green space and water spaces.<br>Water spaces such as stream and lakes in particular play animportant role in creating urban cool islands because waterspaces have higher evapotranspiration rates than green spaces.The objective of this study is to present planning andmanagement information on water spaces to mitigate urban heatislands (UHI), by analyzing their effects on air temperature dueto water space characteristics.<br>To achieve this, the UCI effects of urban water spaces wereanalyzed by applying UCI indices such as UCI scale,temperature difference, and UCI intensity. Next, considerationsfor composing and managing water spaces to mitigate urbanheat islands were identified through analysis of the relationshipbetween UCI indices and characteristics of water spaces such asarea, perimeter, shape, and width.<br>The results show that larger water spaces are more useful inreducing urban heat. In addition, more complex water spaceswere found to be more efficient than simple ones. The results ofthis study can be applied to analyze priority areas for thecreation or restoration of new water spaces. It can be alsoutilized as a planning guideline for designing water spaces.