城市公园热传导效率提高的降温效果

IF 1.4 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Journal of Agricultural Meteorology Pub Date : 2020-01-01 DOI:10.2480/agrmet.d-20-00022

M. Ueyama, T. Ando

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引用次数: 6

摘要

缓解城市热岛效应是城市可持续发展的重要环境问题。我们使用温度分解方法量化了从城市中心到城市公园的土地利用变化对地表降温的相对贡献，并在日本堺市进行了为期一年的成对涡动相关测量。通过建立公园提高热传输效率，使白天地表温度降低了3.9-4.9 K，这是整个季节白天地表冷却的最大贡献。人为热通量的消失使夜间地表温度降低了0.1 ~ 0.6 K，其中夏季夜间的贡献最大。因此，通过城市绿化来提高热传输效率是冷却城市表面的一个很好的缓解策略。

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Cooling effect of an urban park by enhanced heat transport efficiency

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.

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来源期刊

Journal of Agricultural Meteorology AGRICULTURE, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES

CiteScore

2.70

自引率

7.70%

发文量

期刊介绍： For over 70 years, the Journal of Agricultural Meteorology has published original papers and review articles on the science of physical and biological processes in natural and managed ecosystems. Published topics include, but are not limited to, weather disasters, local climate, micrometeorology, climate change, soil environment, plant phenology, plant response to environmental change, crop growth and yield prediction, instrumentation, and environmental control across a wide range of managed ecosystems, from open fields to greenhouses and plant factories.