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GroMoPo Metadata for Regueb basin model


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Created: Feb 08, 2023 at 4:22 a.m.
Last updated: Feb 08, 2023 at 4:23 a.m.
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Abstract

Climate and anthropogenic changes are expected to reduce renewable groundwater resources and to increase the risks of water scarcity, particularly in arid regions. Understanding current and future risks of water scarcity is vital to make the right water management decision at the right time. This study aims to analyze the impact of both human and climate pressures on groundwater availability in an arid environment: the Regueb basin in Central Tunisia. An integrated approach was used and applied at a monthly time step over a reference period (1976-2005) and a future period (2036-2065). Groundwater resources were assessed using hydrogeological modeling. Irrigation water withdrawals were evaluated based on remote sensing and the CropWat model. Urban water use was estimated from population growth and specific monthly water consumption data. The resulting values were used to compute two indicators (water stress index, groundwater balance) to evaluate water scarcity risks at the 2050 horizon. To assess current and future climate forcing on water resources, three climate scenarios were generated based on simulations from Coupled Model Intercomparison Project Phase 5 (CMIP5) data. A business-as-usual and an adaptation scenario (optimal cropping scenario) were performed by varying the surface areas and the crops grown in the irrigated area. Results show that the average annual water use will increase by 3.8 to 16.4% under climate change only, whereas it will increase by 100% under the business-as-usual scenario. Under the optimal cropping scenario, total water demand will increase by 50%. Water stress index indicates that under the climate change only scenario, water demand should be satisfied by the 2050 horizon, while under the other two scenarios, severe water stress will occur by 2050. The developed framework in this paper aims to fit in arid and semiarid regions in order to evaluate groundwater stress and to assess the efficiency of adaptation strategies. It results in two major recommendations regarding changes in land use and the improvement of groundwater monitoring.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Tunisia
North Latitude
35.1915°
East Longitude
9.6960°
South Latitude
34.8341°
West Longitude
9.3452°

Content

Additional Metadata

Name Value
DOI 10.1007/s11027-018-9797-9
Depth 100
Scale 1 001 - 10 000 km²
Layers 1
Purpose Groundwater resources
GroMoPo_ID 197
IsVerified True
Model Code MODFLOW
Model Link https://doi.org/10.1007/s11027-018-9797-9
Model Time SS
Model Year 2019
Model Authors Guermazi, E; Milano, M; Reynard, E; Zairi, M
Model Country Tunisia
Data Available Report/paper only
Developer Email emna.guermazi@unil.ch
Dominant Geology Unsure
Developer Country Switzerland; Tunisia
Publication Title Impact of climate change and anthropogenic pressure on the groundwater resources in arid environment
Original Developer No
Additional Information Climate and anthropogenic changes are expected to reduce renewable groundwater resources and to increase the risks of water scarcity, particularly in arid regions. Understanding current and future risks of water scarcity is vital to make the right water management decision at the right time. This study aims to analyze the impact of both human and climate pressures on groundwater availability in an arid environment: the Regueb basin in Central Tunisia. An integrated approach was used and applied at a monthly time step over a reference period (1976–2005) and a future period (2036–2065). Groundwater resources were assessed using hydrogeological modeling
Integration or Coupling Water use
Evaluation or Calibration Static water levels
Geologic Data Availability Unsure

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Regueb basin model, HydroShare, http://www.hydroshare.org/resource/af9367ecf8f241a592c28434196b1940

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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