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城市化和气候变化对地下温度的影响:意大利米兰的一项建模研究
Alberto Previati1, Luca Gallia1, Giovanni Crosta1
1Department of Earth and Environmental Sciences, University of Milan-Bicocca, Milan, Italy.
概括
米兰的地下城市热岛 (SUHI) 已大幅扩大,温度上升至+5°C. 未来的预测表明持续的变暖,需要城市规划,以实现可持续的冷却和地热能源.
科学领域:
- 环境科学 环境科学
- 地质物理学 地质物理学
- 城市气候学 城市气候学
背景情况:
- 地下城市热岛效应 (SUHI) 描述了城市区域下面的温度升高.
- 了解SUHI的演变对于城市规划和资源管理至关重要.
研究的目的:
- 调查米兰SUHI效应的长期演变.
- 量化地下温度变化并预测未来的趋势.
主要方法:
- 使用合流体流量和热传输数值模型.
- 集成的历史数据 (地图,温度记录) 和卫星遥感 (Landsat 8).
- 校准模型与地下水温度测量进行验证.
主要成果:
- 地表温度在水表深处显示出高达+5°C的异常.
- SUHI的范围已经从1884年的3公里扩大到2025年的9公里.
- 温度异常是异质的,受到地下水深度,流量,土地覆盖面和城市扩张的影响.
结论:
- 未来的预测表明,地下气温正在上升,尤其是在地下水较浅的情况下.
- 强调需要可持续的城市冷却策略和优化地热能使用.
- 强调在城市规划中考虑地下热力学的重要性.
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