Comparative performance of soil water balance models in computing semi-arid aquifer recharge

Touhami, Issam; Andreu, José Miguel; Chirino, Esteban; Sánchez, Jaime López; Pulido−Bosch, A.; Martínez‐Santos, Pedro; Moutahir, Hassane; Bellot, Juan

doi:10.1080/02626667.2013.802094

Cited by 18 publications

(14 citation statements)

References 30 publications

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“…The results indicate a major increase in temperature and a drop in precipitation compared to the historical data (especially for the A2 scenario and the 2025-2050 time slice). Other researchers have obtained similar results in the studies they have done in the Mediterranean region [16,18,46]. A decreasing rainfall trend is observed along time and scenarios, although a moderate increase in precipitation is detected for the B1 greenhouse scenario at the end of the simulated 2025-2050 period (in comparison to the 2000-2024 time slice), which can be attributed to the associated uncertainties of the results.…”

Section: Climate Change Forecast and Effects On The Hydrological Systemsupporting

confidence: 62%

Climate and Land Use Changes on Streamflow and Subsurface Recharge in the Fluvià Basin, Spain

Candela

Tamoh

Olivares

et al. 2016

Water

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Climate change impact on water resources (streamflow and deep natural recharge) based on the downscaled outputs from the ECHAM5 general circulation model (GCM) has been investigated in the Mediterranean basin (Fluvià, Spain) for the A2, B1 greenhouse scenarios and 2000-2024/2025-2050 time slices. The HEC-HMS 3.4 rainfall-runoff numerical model was the basic tool used to generate streamflow for the historical period, and deep natural recharge was calculated from Visual-BALAN 2.0, a water-soil-plant distributed model. The hydrologic and recharge models were employed to generate future climate change hydrographs and the deep recharge amount. Furthermore, the selected future climate scenarios, subject to possible changes in the land use/land cover forecast, were integrated into the models, and water resource impacts were assessed. The multiple combinations of climate model, time slices, greenhouse scenarios, land use/land cover scenarios and hydrological estimation methods resulted in six scenarios. The obtained results estimate an increase in temperature (1.5˝C), a decline in precipitation (17%) and a maximum decrease of 49.5% and 16.8% in runoff and groundwater recharge, respectively, for 2050 (A2) compared to the historical values. Planned land cover scenarios, implying small changes of agricultural and forested land, show no major contribution to future water resource changes. According to the results, the most sensitive parameters conditioning future water resources are changes in temperature and precipitation.

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Section: Climate Change Forecast and Effects On The Hydrological Systemsupporting

confidence: 62%

Climate and Land Use Changes on Streamflow and Subsurface Recharge in the Fluvià Basin, Spain

Candela

Tamoh

Olivares

et al. 2016

Water

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“…In order to determine the soil water balance on the aquifer scale, the model's variable output values were weighted according to the percentage of vegetation cover types on the aquifer surface. A further explanation is presented in Touhami et al (2013Touhami et al ( , 2014.…”

Section: Soil Water Balance and Aquifer Recharge Calculationmentioning

confidence: 94%

“…Over the last decade, the HYDROBAL model has been successfully applied under semiarid conditions to analyse the soil water balance on different vegetation cover types and to assess its effects on runoff, evapotranspiration and soil moisture (Bellot et al, 1999;Chirino, 2003). It has also been used to assess the effect of different land-use scenarios on water resources and aquifer recharge (Bellot et al, 2001;Touhami et al, 2013Touhami et al, , 2014.…”

Section: Hydrobal Model Descriptionmentioning

confidence: 99%

“…This well known karstic aquifer can be considered as well representative of the kind of aquifers in this region. Temperature and precipitation data from a selected GCM, previously downscaled by AEMet (2009), were coupled to the HYDROBAL hydrological model, which has been previously tested in this semiarid area with good results Touhami et al, 2013Touhami et al, , 2014. Impact on groundwater recharge was assessed for two emission IPCC scenarios: A2-high and B2-low.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of climate change impacts on soil water balance and aquifer recharge in a semiarid region in south east Spain

Touhami

Chirino

Andreu

et al. 2015

Journal of Hydrology

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Please cite this article as: Touhami, I., Chirino, E., Andreu, J.M., Sánchez, J.R., Moutahir, H., Bellot, J., Assessment of climate change impacts on soil water balance and aquifer recharge in a semiarid region in south east Spain, Hydrology (2015), doi: http://dx.doi.org/10. 1016/j.jhydrol.2015.05.012 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Climate change forecasts in a semiarid region are of much interest to academics, managers 31 and governments. A significant decrease in annual precipitation and an increase in mean 32 annual air temperature are expected; consequently, changes in the soil water balance and 33 groundwater recharge to aquifers are expected as a response to climate change forecasts. In 34 this context, our study aimed to assess the impact of climate changes on the soil water balance 35 and natural groundwater recharge in a semiarid area (Ventós-Castellar aquifer, SE, Spain). To 36 this end, we selected Global Climate Model HadCM3 after comparing it with two other 37 models (ECHAM4 and CGCM2). The HadCM3 model climate data (air temperature and 38 precipitation in two emission scenarios: A2-high and B2-low; 2011-2099) were coupled to a 39 HYDROBAL hydrological model to determine the soil water balance. The HYDROBAL 40 model results showed that climate change will have a significant impact on the soil water 41 balance in the study area, especially on groundwater recharge during the latter period. In both 42 the A2-high and B2-low scenarios, the selected years to run the HYDROBAL model showed 43 a decrease in water balance components (Precipitation, actual evapotranspiration, aquifer 44 recharge and runoff) in relation to the baseline period . Over the projected period 45 (2011-2099), we expect fewer rainfall events (>15 mm), which promote aquifer recharge, 46 longer dry summer seasons and, consequently, reduced average annual recharge that ranged 47 from 3-17%; 10-49 mm, if compared to the baseline period. The methodology developed in 48 the present study can be beneficial for assessing the impact of predicted climate change on 49 groundwater recharge, and can help managers and planners to devise strategies for the 50 efficient use and conservation of freshwater resources. 51 52 Journal of

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“…CMB provides long-term averages under steady state conditions and is more convenient for regional scale estimations, like aquifer or basin scale, although sub-regional applications are also successful. The joint use and comparison of both methods are desirable (Liggett and Allen, 2010;Varni and Custodio, 2013;Touhami et al, 2014). Sub-regional scale estimates are not representative of an entire aquifer or basin, while regional estimates allow obtaining information on spatial variability.…”

Section: Introductionmentioning

confidence: 99%

Integrating soil water and tracer balances, numerical modelling and GIS tools to estimate regional groundwater recharge: Application to the Alcadozo Aquifer System (SE Spain)

Hornero

Manzano

Ortega

et al. 2016

Science of The Total Environment

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Comparative performance of soil water balance models in computing semi-arid aquifer recharge

Cited by 18 publications

References 30 publications

Climate and Land Use Changes on Streamflow and Subsurface Recharge in the Fluvià Basin, Spain

Climate and Land Use Changes on Streamflow and Subsurface Recharge in the Fluvià Basin, Spain

Assessment of climate change impacts on soil water balance and aquifer recharge in a semiarid region in south east Spain

Integrating soil water and tracer balances, numerical modelling and GIS tools to estimate regional groundwater recharge: Application to the Alcadozo Aquifer System (SE Spain)

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