Robust analysis of future climate change impacts on water for agriculture and other sectors: a case study in the Sacramento Valley (original) (raw)

Abstract

As part of the 2006 Climate Change Report to Governor Schwarzenegger and the California Legislature, an application of the Water Evaluation and Planning (WEAP) system in the Sacramento River Basin was deployed to look at the impact of climate change on agricultural water management and the potential for adaptation. The WEAP system includes a dynamically integrated rainfall runoff hydrology module that generates the components of the hydrologic cycle from input climate time series. This allows for direct simulation of water management responses to climate change without resorting to perturbations of historically observed hydrologic conditions. In the Sacramento River Basin, the four climate time series adopted for the 2006 Climate Change Report were used to simulate agricultural water management without any adaptation and with adaptation in terms of improvements in irrigation efficiency and shifts in cropping patterns during dry periods. These adaptations resulted in lower overall water demands in the agricultural sector, to levels observed during the recent past, and associated reductions in groundwater pumping and increases in surface water allocations to other water use sectors.

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Authors and Affiliations

1. Stockholm Environment Institute—US Center, 133 D St., Suite F, Davis, CA, 95616, USA
   D. R. Purkey & B. Joyce
2. Department of Civil and Environmental Engineering, University of California, 612 Davis Hall, Berkeley, CA, 94720-1710, USA
   S. Vicuna & J. A. Dracup
3. Department of Agriculture and Resource Economics, University of California, Mail Code 3310, Berkeley, CA, 94720-3310, USA
   M. W. Hanemann
4. Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, University of California, One Cyclotron Road, MS 90-4000, Berkeley, CA, 94720, USA
   L. L. Dale
5. National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO, 80301, USA
   D. Yates

Authors

1. D. R. Purkey
2. B. Joyce
3. S. Vicuna
4. M. W. Hanemann
5. L. L. Dale
6. D. Yates
7. J. A. Dracup

Corresponding author

Correspondence toD. R. Purkey.

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Purkey, D.R., Joyce, B., Vicuna, S. et al. Robust analysis of future climate change impacts on water for agriculture and other sectors: a case study in the Sacramento Valley.Climatic Change 87 (Suppl 1), 109–122 (2008). https://doi.org/10.1007/s10584-007-9375-8

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• Received: 02 August 2006
• Accepted: 05 October 2007
• Published: 22 December 2007
• Issue date: March 2008
• DOI: https://doi.org/10.1007/s10584-007-9375-8

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