Publication Abstracts

Fischer et al. 2007

Fischer, G., F.N. Tubiello, H. van Velthuizen, and D.A. Wiberg, 2007: Climate change impacts on irrigation water requirements: Effects of mitigation, 1990-2080. Technol. Forecast. Soc. Change, 74, 1083-1107, doi:10.1016/j.techfore.2006.05.021.

Potential changes in global and regional agricultural water demand for irrigation were investigated within a new socio-economic scenario, A2r, developed at the International Institute for Applied Systems Analysis (IIASA) with and without climate change, with and without mitigation of greenhouse gas emissions. Water deficits of crops were developed with the Food and Agriculture Organization (FAO)-IIASA Agro-ecological Zone model, based on daily water balances at 0.5° latitude × 0.5° longitude and then aggregated to regions and the globe. Future regional and global irrigation water requirements were computed as a function of both projected irrigated land and climate change and simulations were performed from 1990 to 2080. Future trends for extents of irrigated land, irrigation water use, and withdrawals were computed, with specific attention given to the implications of climate change mitigation. Renewable water-resource availability was estimated under current and future climate conditions. Results suggest that mitigation of climate change may have significant positive effects compared with unmitigated climate change. Specifically, mitigation reduced the impacts of climate change on agricultural water requirements by about 40%, or 125-160 billion m3 (Gm3) compared with unmitigated climate. Simple estimates of future changes in irrigation efficiency and water costs suggest that by 2080 mitigation may translate into annual cost reductions of about 10 billion US$.

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BibTeX Citation

  author={Fischer, G. and Tubiello, F. N. and van Velthuizen, H. and Wiberg, D. A.},
  title={Climate change impacts on irrigation water requirements: Effects of mitigation, 1990-2080},
  journal={Technol. Forecast. Soc. Change},

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RIS Citation

ID  - fi06000k
AU  - Fischer, G.
AU  - Tubiello, F. N.
AU  - van Velthuizen, H.
AU  - Wiberg, D. A.
PY  - 2007
TI  - Climate change impacts on irrigation water requirements: Effects of mitigation, 1990-2080
JA  - Technol. Forecast. Soc. Change
VL  - 74
SP  - 1083
EP  - 1107
DO  - 10.1016/j.techfore.2006.05.021
ER  -

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