Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aa5fb0 |
Global patterns of shallow groundwater temperatures | |
Benz, Susanne A.1; Bayer, Peter2; Blum, Philipp1 | |
2017-03-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Only meters below our feet, shallow aquifers serve as sustainable energy source and provide freshwater storage and ecological habitats. All of these aspects are crucially impacted by the thermal regime of the subsurface. Due to the limited accessibility of aquifers however, temperature measurements are scarce. Most commonly, shallow groundwater temperatures are approximated by adding an offset to annual mean surface air temperatures. Yet, the value of this offset is not well defined, often arbitrarily set, and rarely validated. Here, we propose the usage of satellite-derived land surface temperatures instead of surface air temperatures. 2 548 measurement points in 29 countries are compiled, revealing characteristic trends in the offset between shallow groundwater temperatures and land surface temperatures. Here it is shown that evapotranspiration and snow cover impact on this offset globally, through latent heat flow and insulation. Considering these two processes only, global shallow groundwater temperatures are estimated in a resolution of approximately 1 km x 1 km. When comparing these estimated groundwater temperatures with measured ones a coefficient of determination of 0.95 and a root mean square error of 1.4 K is found. |
英文关键词 | groundwater temperatures land surface temperature subsurface evapotranspiration snow cover MODIS climate |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413801400001 |
WOS关键词 | LAND-SURFACE TEMPERATURE ; URBAN HEAT ISLANDS ; CLIMATE-CHANGE ; SUBSURFACE TEMPERATURE ; RENEWABLE ENERGY ; VALIDATION ; AIR ; RESOLUTION ; ALGORITHM ; FLOW |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33163 |
专题 | 气候变化 |
作者单位 | 1.Karlsruhe Inst Technol, Inst Appl Geosci, D-76131 Karlsruhe, Baden Wurttembe, Germany; 2.Ingolstadt Univ Appl Sci, Inst New Energy Syst, D-85019 Ingolstadt, Bayern, Germany |
推荐引用方式 GB/T 7714 | Benz, Susanne A.,Bayer, Peter,Blum, Philipp. Global patterns of shallow groundwater temperatures[J]. ENVIRONMENTAL RESEARCH LETTERS,2017,12(3). |
APA | Benz, Susanne A.,Bayer, Peter,&Blum, Philipp.(2017).Global patterns of shallow groundwater temperatures.ENVIRONMENTAL RESEARCH LETTERS,12(3). |
MLA | Benz, Susanne A.,et al."Global patterns of shallow groundwater temperatures".ENVIRONMENTAL RESEARCH LETTERS 12.3(2017). |
条目包含的文件 | 条目无相关文件。 |
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