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An analytical framework to investigate groundwater‐atmosphere interactions influenced by soil properties
Citation Link: https://doi.org/10.15480/882.9491
Publikationstyp
Journal Article
Date Issued
2024-03-31
Sprache
English
TORE-DOI
Journal
Volume
60
Issue
4
Article Number
e2023WR036643
Citation
Water Resources Research 60 (4): e2023WR036643 (2024)
Publisher DOI
Scopus ID
Publisher
Wiley
The interaction between climate and groundwater forms a complex, coupled system that affects land‐atmosphere feedback processes and thus local climatic parameters. We propose an analytical framework that integrates local groundwater information and soil hydrophysical characteristics to identify regions with bidirectional (two‐way) coupling where groundwater is influenced by climatic factors (e.g., precipitation) and may affect local climate (e.g., through surface fluxes). The framework capitalizes on the concept of the evaporation characteristic length to quantify the hydraulic connection of groundwater to the soil surface. To evaluate the framework, we calculate the maximum depth of hydraulic connection Dmax between groundwater and the soil surface in Hamburg, Germany. For regions with Dmax exceeding the groundwater depth (d), a bidirectional mode of coupling is defined, while Dmax < d implies a unidirectional coupling mode. Our results indicate that climate driven evaporation changes potentially alter the coupling between groundwater and climate depending on soil texture. Moreover, soil hydraulic properties and shallow groundwater tables could play a crucial role in shifting land‐atmosphere feedback processes by influencing the coupling mode. This research provides insights into the groundwater‐climate interactions under various climatic conditions and soil textures which could contribute to sustainable land‐use management practices, particularly in regions characterized by bidirectional coupling.
Subjects
groundwater
climate
soil properties
land‐atmosphere interaction
DDC Class
550: Earth Sciences, Geology
Funding Organisations
More Funding Information
Deutsche Forschungsgemeinschaft
http://dx.doi.org/10.13039/501100001659
http://dx.doi.org/10.13039/501100001659
Publication version
publishedVersion
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Name
WRCR_WRCR27156.pdf
Type
Main Article
Size
1.57 MB
Format
Adobe PDF