期刊
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
卷 53, 期 5, 页码 700-722出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2022.2083899
关键词
Climate change; geothermics; groundwater quality; subsurface temperature; thermal environment; waste heat; Binoy Sarkar and Yong Sik Ok
Anthropogenic warming of the atmosphere is a pressing challenge in the 21st century, but knowledge on subsurface warming is lacking. This review proposes a classification based on heat source geometry, scale, process, and intention of heat release. It explores the intensities of subsurface warming, heat flux density, and implications for processes and ecosystems, as well as the potential of recycling waste heat with geothermal installations.
Anthropogenic warming of the atmosphere is one if not the most pressing challenge we face in the 21st century. While our state of knowledge on human drivers of atmospheric warming is advancing rapidly, little so can be said if we turn our view toward the Earth's interior. Intensifying land use and atmospheric climate change condition the changing thermal state of the subsurface at different scales and intensities. Temperature is proven to be a driving factor for the quality of our largest freshwater resource: groundwater. But there is only insufficient knowledge on which sources of heat exist underground, how they relate in their intensity of subsurface warming, and which consequences this warming implies on associated environments, ecosystems and resources. In this review, we propose a differentiated classification based on (1) the geometry of the heat source, (2) the scale at which the subsurface is heated, (3) the process that generates the heat, and (4) the intention of heat release. Furthermore, we discuss the intensities of subsurface warming, the density of induced heat fluxes, as well as their abundance, and draw implications for depending processes and ecosystems in the subsurface and the potential of recycling this waste heat with geothermal installations.
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