new technologies to facilitate the planning process to manage water over-exploitation prof wim...
TRANSCRIPT
- Slide 1
- New Technologies to Facilitate the Planning Process to Manage Water Over-Exploitation Prof Wim Bastiaanssen & Dr. Peter Droogers
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- Ttan Balance inflow & outflow Cheema Ph.D. student TU-Delft Expenditures exceeding income is not sustainable Reduce expenditures = reduce evapotranspiration income expenditures
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- Water Resources Yemen Problem: Data is outdated, incomplete, inconsistent & sometimes contradictory Source: Worldbank study using public domain data
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- TRMM validation over Pakistan Manifold solutions exist Cheema Ph.D. student TU-Delft Reduce abstractions of groundwater -Quota on water use, well licences, stop subsidized diesel for pumps -Reduce crop ET by improved irrigation technologies -Reuse urban, industrial and irrigation water Control agricultural areas -Control irrigated area (ha) -Control cropping intensity -Abandon certain crops -Land retirement Rainwater harvesting -Local infiltration dams -Constructing more reservoirs Crop productivity improvement -New seeds -Better fertilizers -Optimal water supply Desalinization Import food
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- Which tools are available to assist planning ? Cheema Ph.D. student TU-Delft Remote sensing Water basin models Groundwater flow models Climate models Water accounting GIS data Smart phone SMS messages
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- Models are Required for Future Projection PAST FUTURE FUTURE: C FUTURE: A Policies: A, B, C Policies: A, B, C Observations Remote Sensing Simulation Models FUTURE: B
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- Many satellites provide free data
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- TRMM validation over Pakistan Satellite Image of Irrigation Systems Siham Cheema Ph.D. student TU-Delft Situation 2006 Changes 2006 to 2009
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- Actual evapotranspiration Abyan
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- Yearly Rainfall TRMM Satellite 1998 to 2012 Cheema Ph.D. student TU-Delft
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- RainfMM validation over Pakistan Rainfall trend 1998 to 2012 Cheema Ph.D. student TU-Delft
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- Modelling water basins Channel/Flood Plain Processes
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- Modelling Recharge and Runoff for period 2000-2009 (SPHY model)
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- TRMM validation over Pakistan Remote sensing for calibrating hydrological model Cheema Ph.D. student TU-Delft Remote sensing Hydrological model
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- Change in precipitation (present vs. 2050) CMIP3 average 9 GCMS - 2040-2050 relative to 2000-2009 So somewhat more rain in some areas, but.
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- Change in Evapotranspiration (present vs. 2050), but. evaporation also higher and demand for irrigation even much larger
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- Water accounting
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- Smart phones Local farmers being supported
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- Water productivity gap Morocco (Doukkala)
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- Reduce irrigated area Saudi Arabia Ban on wheat
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- Water credit card Italy Pump stops working if water credits are finished
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- China Plain: ET management
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- We need information to answer the following questions: Cheema Ph.D. student TU-Delft How much water do we have ? Where is the water going to ? Who is using the water ? What are the recharge mechanisms ? What is the local sustainable aquifer yield ? What is the remaining aquifer life ? Can we introduce water savings without hampering crop production ? Geographical and hydrological data provides the knowledge base
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- Tools create data at our fingertips Share the data via the cloud !
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- Thank you !