the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Coupling a groundwater model with a land surface model to improve water and energy cycle simulation
Abstract. The water and energy cycles interact, making them generally closely related. Land surface models (LSMs) can describe the water and energy cycles of the land surface, but their description of the subsurface water processes is oversimplified, and lateral groundwater flow is ignored. Groundwater models (GWMs) well describe the dynamic movement of subsurface water flow, but they cannot depict the physical mechanism of the evapotranspiration (ET) process in detail. In this study, a coupled model of groundwater with simple biosphere (GWSiB) is developed based on the full coupling of a typical land surface model (SiB2) and a three-dimensional variably saturated groundwater model (AquiferFlow). In this model, the infiltration, ET and energy transfer are simulated by SiB2 via the soil moisture results given by the groundwater flow model. The infiltration and ET results are applied iteratively to drive the groundwater flow model. The developed model is then applied to study water cycle processes in the middle reaches of the Heihe River Basin in the northwest of China. The model is validated through data collected at three stations in the study area. The stations are located in a shallow groundwater depth zone, a deeper groundwater depth zone and an agricultural irrigation area. The study results show that the coupled model can well depict the land surface and groundwater interaction and can more comprehensively and accurately simulate the water and energy cycles compared with uncoupled models.
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RC C95: 'Reviewer Comment', Anonymous Referee #1, 17 Feb 2012
- AC C536: 'Response to referee 1#', Wei Tian, 28 Mar 2012
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RC C257: 'Comments', Anonymous Referee #2, 08 Mar 2012
- AC C548: 'Response to referee 2#', Wei Tian, 28 Mar 2012
- EC C1664: 'Publication not foreseen at this stage', Hannah Cloke, 22 May 2012
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RC C95: 'Reviewer Comment', Anonymous Referee #1, 17 Feb 2012
- AC C536: 'Response to referee 1#', Wei Tian, 28 Mar 2012
-
RC C257: 'Comments', Anonymous Referee #2, 08 Mar 2012
- AC C548: 'Response to referee 2#', Wei Tian, 28 Mar 2012
- EC C1664: 'Publication not foreseen at this stage', Hannah Cloke, 22 May 2012
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Cited
6 citations as recorded by crossref.
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- Groundwater in the Earth's critical zone: Relevance to large‐scale patterns and processes Y. Fan 10.1002/2015WR017037
- Evaluation of a landscape evolution model to simulate stream piracies: Insights from multivariable numerical tests using the example of the Meuse basin, France A. Benaïchouche et al. 10.1016/j.geomorph.2015.10.001
- Application of a Coupled Vegetation Competition and Groundwater Simulation Model to Study Effects of Sea Level Rise and Storm Surges on Coastal Vegetation S. Teh et al. 10.3390/jmse3041149
- Evaluation of drought propagation in an ensemble mean of large-scale hydrological models A. Van Loon et al. 10.5194/hess-16-4057-2012
- A review of the global soil property maps for Earth system models Y. Dai et al. 10.5194/soil-5-137-2019