Climate change impacts on irrigation water requirements in the Guadalquivir river basin in Spain

2007 ◽  
Vol 7 (3) ◽  
pp. 149-159 ◽  
Author(s):  
J. A. Rodríguez Díaz ◽  
E. K. Weatherhead ◽  
J. W. Knox ◽  
E. Camacho
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Irrigation Water ◽  
Climate Change Impacts ◽  
Water Requirements ◽  
Guadalquivir River

scholarly journals Climate change impacts on irrigation water requirements: Effects of mitigation, 1990–2080

2007 ◽  
Vol 74 (7) ◽  
pp. 1083-1107 ◽  
Author(s):  
Günther Fischer ◽  
Francesco N. Tubiello ◽  
Harrij van Velthuizen ◽  
David A. Wiberg
Keyword(s):  
Climate Change ◽  
Irrigation Water ◽  
Climate Change Impacts ◽  
Water Requirements

scholarly journals Assessing effects of climate change on irrigation water demand in the Lombok River Basin, Indonesia

2021 ◽  
Vol 930 (1) ◽  
pp. 012061
Author(s):  
A W W Saputra ◽  
N A Zakaria ◽  
N W Chan
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Irrigation Water ◽  
Water Demand ◽  
Irrigation Efficiency ◽  
Command Area ◽  
Efficiency Improvement ◽  
Water Requirements ◽  
Irrigation Water Demand ◽  
The Impact

Abstract Irrigation water demand in the command area is affected by rainfall and climate conditions in the river basin. In climate change conditions, rainfall and temperature are predicted to increase and projected to impact irrigation water requirements significantly. Therefore, understanding the climate change effects on irrigation demand in the command area is significant to the river basin manager and planner for managing water resources effectively. This study aims to predict the impact of climate change and irrigation efficiency improvement on the irrigation water requirement in 2032-2040. This study used the CropWat model to estimate irrigation water requirements in 1995-2005 and 2032-2040. Irrigation water demand in the Dodokan watershed as a part of the Lombok river basin was computed using the historical rainfall and climate data from observation stations. Further, the observed data from 2006 to 2014 were projected into climate change in 2032-2040 as an input for the model to predict the demand in corresponding years. Result suggests that the change of annual irrigation water demand in the Dodokan watershed was expected to rise by 1.61% in 2032-2040 compared with 1995-2005, and irrigation efficiency improvement effort would decrease the demand -18.18% in the climate change period.

Impacts of climate change on irrigation water requirements for rice–wheat cultivation in Bagmati River Basin, Nepal

2013 ◽  
Vol 4 (4) ◽  
pp. 422-439 ◽  
Author(s):  
S. Shrestha ◽  
B. Gyawali ◽  
U. Bhattarai
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Irrigation Water ◽  
General Circulation ◽  
Large Scale ◽  
Circulation Model ◽  
Growth Stages ◽  
Water Requirements ◽  
Bagmati River ◽  
Impacts Of Climate Change

This study highlights the spatial and temporal impacts of climate change on rice–wheat cropping systems, focusing on irrigation water requirement (IWR) in the Bagmati River Basin of Nepal. The outputs from a general circulation model (HadCM3) for two selected scenarios (A2 and B2) of IPCC and for three time periods (2020s, 2050s, and 2080s) have been downscaled and compared to a baseline climatology. CROPWAT 8.0 model is used to estimate the water requirements. IWRs show different trends in different physiographic regions and different growth stages of rice and wheat. A decreasing trend of IWRs in the Mid Hills and the High Hills indicates that farmer-based small irrigation schemes are sufficient to meet the requirements. However, in the Terai region, where there is an increasing trend in IWRs, the deficit volume of water needs to be supplied from potential large-scale irrigation schemes.

Assessment of climate change impacts on water balance and hydrological extremes in Bang Pakong-Prachin Buri river basin, Thailand

2020 ◽  
Vol 186 ◽  
pp. 109544 ◽  
Author(s):  
Thundorn Okwala ◽  
Sangam Shrestha ◽  
Suwas Ghimire ◽  
S. Mohanasundaram ◽  
Avishek Datta
Keyword(s):  
Climate Change ◽  
Water Balance ◽  
River Basin ◽  
Climate Change Impacts ◽  
Hydrological Extremes

scholarly journals Irrigation water requirements for seed corn and coffee under potential climate change scenarios

2015 ◽  
Vol 7 (1) ◽  
pp. 39-51 ◽  
Author(s):  
Ali Fares ◽  
Ripendra Awal ◽  
Samira Fares ◽  
Alton B. Johnson ◽  
Hector Valenzuela
Keyword(s):  
Climate Change ◽  
Irrigation Water ◽  
Co2 Emission ◽  
Future Climate Change ◽  
Climate Change Scenarios ◽  
Deep Percolation ◽  
Canopy Interception ◽  
Water Requirements ◽  
Seed Corn ◽  
The Impact

The impact of potential future climate change scenarios on the irrigation water requirements (IRRs) of two major agricultural crops (coffee and seed corn) in Hawai'i was studied using the Irrigation Management System (IManSys) model. In addition to IRRs calculations, IManSys calculates runoff, deep percolation, canopy interception, and effective rainfall based on plant growth parameters, site specific soil hydrological properties, irrigation system efficiency, and long-term daily weather data. Irrigation water requirements of two crops were simulated using historical climate data and different levels of atmospheric CO2 (330, 550, 710 and 970 ppm), temperature (+1.1 and +6.4 °C) and precipitation (±5, ±10 and ±20%) chosen based on the Intergovernmental Panel on Climate Change (IPCC) AR4 projections under reference, B1, A1B1 and A1F1 emission scenarios. IRRs decreased as CO2 emission increased. The average percentage decrease in IRRs for seed corn is higher than that of coffee. However, runoff, rain canopy interception, and deep percolation below the root zone increased as precipitation increased. Canopy interception and drainage increased with increased CO2 emission. Evapotranspiration responded positively to air temperature rise, and as a result, IRRs increased as well. Further studies using crop models will predict crop yield responses to these different irrigation scenarios.

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