Past, present and future of subsurface urban heat islands in China and Germany - implications for geothermal development

中国和德国地下城市热岛的过去、现在和未来——对地热开发的影响

• 批准号: 391979809
• 负责人: Professor Dr. Peter Bayer
• 金额: --
• 依托单位: Abteilung Ingenieurgeologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/391979809?language=en
• 关键词: Past; present; future; subsurface; urban

Cities have their roots in the ground. Here are the basements of buildings, essential infrastructure, vital freshwater and renewable energy resources. Here, soil and groundwater temperatures appear substantially increased when compared to ambient undisturbed conditions, i.e. the so-called subsurface urban heat islands (SUHIs). Better understanding of the mechanisms forming SUHIs and of the differences between those in different regions will be crucial for developing recipes for proactive urban ground management in the future. The focus of this project is, for the first time, on the comparison of SUHIs in two Chinese and German cities, Nanjing and Cologne. Both research groups have substantial experience in SUHI research in their countries, and they have precious databases from past measurements of soil and groundwater temperature. The purpose is to complement these with a new collaborative measurement program, and to learn from past and present SUHI characteristics about the so far unknown long-term dynamics. By field and laboratory-based experimental work and numerical simulation of ground temperature evolution with transient land use development, the future evolution of SUHIs will be revealed. By comparing the conditions first in German and Chinese cities, and then in selected further cities worldwide, the driving factors in different urban environments will be identified. Ultimately, more reliable predictions of the future subsurface development also in other cities without detailed site investigation is facilitated.

城市的根在大地上。这里有建筑物的地下室，重要的基础设施，重要的淡水和可再生能源资源。在这里，土壤和地下水的温度似乎大大增加时，与周围的未受干扰的条件下，即所谓的地下城市热岛（SUHI）。更好地了解形成SUHI的机制以及不同区域SUHI之间的差异，对于制定未来积极主动的城市地面管理方法至关重要。该项目的重点是，第一次，在两个中国和德国城市，南京和科隆的SUHI的比较。这两个研究小组在各自国家的SUHI研究方面都有丰富的经验，他们拥有过去测量土壤和地下水温度的宝贵数据库。其目的是补充这些与一个新的合作测量计划，并从过去和现在的SUHI的特点，迄今未知的长期动态。通过野外和实验室的地面温度演变的实验工作和数值模拟与瞬态土地利用的发展，SUHIs的未来演变将被揭示。通过比较德国和中国城市的情况，然后在世界范围内进一步选择城市，将确定不同城市环境中的驱动因素。最终，在没有详细的现场调查的情况下，促进了对其他城市未来地下开发的更可靠的预测。