A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Irrigation variability and climate change affect derived distributions of simulated water recharge and nitrate leaching
Irrigation (‘blue’) water has high value as municipalities seek water security under growing populations and projected climates, but spatial variability makes estimating return flows to groundwater challenging. We demonstrate a framework for simulating spatially variable infiltration and derived distributions of return flows using an agricultural and vadose zone model to simulate recharge and nitrate leaching under irrigated corn in semi-arid northeastern Colorado, USA. Derived distributions indicated increased historical recharge (2–42%) as the spatial variability of applied irrigation increased. Projected climate in 2050 increased recharge above historical rates by up to 58%, but climatic effects decreased with increasing irrigation variability.
Irrigation variability and climate change affect derived distributions of simulated water recharge and nitrate leaching
Irrigation (‘blue’) water has high value as municipalities seek water security under growing populations and projected climates, but spatial variability makes estimating return flows to groundwater challenging. We demonstrate a framework for simulating spatially variable infiltration and derived distributions of return flows using an agricultural and vadose zone model to simulate recharge and nitrate leaching under irrigated corn in semi-arid northeastern Colorado, USA. Derived distributions indicated increased historical recharge (2–42%) as the spatial variability of applied irrigation increased. Projected climate in 2050 increased recharge above historical rates by up to 58%, but climatic effects decreased with increasing irrigation variability.
Irrigation variability and climate change affect derived distributions of simulated water recharge and nitrate leaching
Green, Timothy R. (author) / Anapalli, Saseendran S. (author)
Water International ; 43 ; 829-845
2018-08-18
17 pages
Article (Journal)
Electronic Resource
English
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