Cooling effect of an urban park by enhanced heat transport efficiency
Cooling effect of an urban park by enhanced heat transport efficiency
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DOI：
10.2480/agrmet.d-20-00022
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发表时间：
2020
影响因子：
1.3
通讯作者：
M. Ueyama;T. Ando
中科院分区：
文献类型：
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作者：
M. Ueyama;T. Ando
缓解城市热岛效应是城市可持续发展的重要环境问题。我们量化的相对贡献与土地利用变化从城市中心到城市公园的温度分解方法，与一年的成对涡度协方差测量在日本酒井县的表面冷却。通过建立公园来提高热传输效率，使白天的表面温度降低了3.9-4.9 K，这是整个季节白天表面冷却的最大贡献。由于公园的建立，人为热通量的消失使夜间地表温度降低了0.1-0.6 K，这是夏季夜间的最大贡献。因此，通过城市绿化提高热传输效率是冷却城市表面的良好缓解策略。
The mitigation of the urban heat island effect is an important environmental issue for sustainable urban development. We quantified the relative contributions to surface cooling associated with land use changes from an urban center to an urban park using the temperature decomposition method, with one-year paired eddy covariance measurements in Sakai, Japan. The enhanced heat transport efficiency achieved through park creation decreased daytime surface temperatures by 3.9-4.9 K, which was the greatest contribution to daytime surface cooling throughout the season. The disappearance of anthropogenic heat flux due to park creation reduced nighttime surface temperatures by 0.1-0.6 K, which was the greatest contribution at night in summer months. Enhancing heat transport efficiency through urban greening is thus a good mitigation strategy for cooling urban surfaces.