Daily and seasonal climatic conditions of green urban open spaces in the Mediterranean climate and their impact on human comfort
Daily and seasonal climatic conditions of green urban open spaces in the Mediterranean climate and their impact on human comfort
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DOI：
10.1016/j.buildenv.2011.11.020
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发表时间：
2012-05-01
影响因子：
7.4
通讯作者：
Matzarakis, Andreas
中科院分区：
文献类型：
--
作者：
Cohen, Pninit;Potchter, Oded;Matzarakis, Andreas
本研究考察了以色列特拉维夫不同植被覆盖的城市公园在夏季和冬季的日气候行为和季节气候行为及其对人体热感觉的影响。研究比较了不同类型的城市绿地开放空间、露天城市广场和附近街道峡谷的气候条件，结果表明，夏季和冬季白天树木茂密的城市公园降温效果最好。在夏季，它使温度降低3.8摄氏度，热舒适值降低18摄氏度(生理等值温度)，而在冬季，它降低温度2摄氏度，热舒适性PET达10摄氏度。对人体热舒适条件影响最大的气候变量是平均辐射温度(T-MRT)，与阴凉的城市公园相比，它在裸露的城市地点更占优势。这些结果强调了树木开放空间作为一种有效的降温工具的重要性。绿树成荫的城市空间所带来的降温效果所带来的好处，比它们在冬季所造成的相对劣势要强得多。(C)2011爱思唯尔有限公司。保留所有权利。
This study examines the daily and seasonal climatic behavior of various urban parks with different vegetation cover and its impact on human thermal sensation in the summer and winter in Tel Aviv, Israel. The study draws a comparison between the climatic conditions developed in various types of urban green open spaces, exposed open urban squares and street canyons near such sites.The results showed that an urban park with a dense canopy of trees has maximum cooling effect during summer and winter in daytime. In summer it reduces temperatures by up to 3.8 degrees C and thermal comfort values by up to 18 degrees C PET (Physiological Equivalent Temperature), while in winter it reduces temperatures by up to 2 degrees C and thermal comfort by up to 10 degrees C PET.The climatic variable that mostly affects human thermal comfort conditions is the Mean Radiant Temperature (T-mrt) which is more dominant at exposed urban sites as compared to shady urban parks. These results emphasize the importance of treed open spaces as an effective tool for heat mitigation. The benefit of the cooling effect achieved by treed urban spaces is much stronger than the comparative disadvantage they create in winter. (C) 2011 Elsevier Ltd. All rights reserved.