Lisbon Urban Heat Island Updated: New Highlights about the Relationships between Thermal Patterns and Wind Regimes
Lisbon Urban Heat Island Updated: New Highlights about the Relationships between Thermal Patterns and Wind Regimes
复制标题
DOI：
10.1155/2013/487695
复制
发表时间：
2013-01-01
影响因子：
2.9
通讯作者：
Machete, Raquel
中科院分区：
文献类型：
--
作者：
Lopes, Antonio;Alves, Elis;Machete, Raquel
城市增长意味着城市气候的重大变化。为了了解里斯本对城市边界层的影响，2004年安装了一个中尺度气象网络。本研究的主要目标是更新2007年发表的研究结果，并带来更准确的信息，城市热岛（UHI）和区域和当地的风系统之间的关系。城市热岛的最高频率被发现在市中心（adores）。在孟山都的绿地公园，最高频率出现在-2至0 ℃之间。在夏季，在贝伦观察到微风的影响，降低了温度。“强”UHI（强度>4摄氏度）更经常发生在夏季，夜间中位数为2摄氏度，白天为1.8摄氏度。最高频率的热岛发生在风速为2和6米/秒之间，并没有与大气平静，如文献中所指出的。8 m/s以上的风抑制了里斯本强烈热岛的发生。夏季夜间强烈的城市热岛应进一步调查，由于热应激对人口的后果和可能增加的能源消耗。
Urban growth implies significant modifications in the urban climate. To understand the influence of the city of Lisbon on the urban boundary layer, a mesoscale meteorological network was installed in 2004. The main goals of the present study are to update the results of the research published in 2007 and to bring more precise information about the relationship between the Urban Heat Island (UHI) and the regional and local wind systems. The highest frequencies of the UHI were found in the city centre (Restauradores). In the green park of Monsanto, the highest frequency occurred between -2 and 0 degrees C. During the summer, the effect of the breezes was observed in Belem, lowering the temperature. The "strong" UHI (intensity >4 degrees C) occurred more often during the summer, with median values of 2 degrees C by night and 1.8 degrees C by day. The highest frequencies of UHI occurred for winds between 2 and 6 m/s and were not associated with atmospheric calm, as pointed out in the literature. Winds above 8 m/s inhibit the occurrence of strong UHI in Lisbon. Summer nighttime strong UHI should be further investigated, due to the heat stress consequences on the population and probable increase of energy consumption.