AustralieFrV1, Main, Exploration, bibRecord, 00A671

ENSO-based streamflow forecasting and its application to water allocation and cropping decisions : an Australian experience

Identifieur interne : 00A671 ( Main/Exploration ); précédent : 00A670; suivant : 00A672

ENSO-based streamflow forecasting and its application to water allocation and cropping decisions : an Australian experience

Auteurs : Yahya Abawi [Australie] ; Sunil Dutta [Australie] ; XIKE ZHANG [Australie] ; David Mcclymont [Australie]

Source :

IAHS-AISH publication [ 0144-7815 ] ; 2005.

RBID : Pascal:05-0298587

Descripteurs français

Pascal (Inist)
- Australie, Ecoulement cours eau, Irrigation, El Nino, Oscillation, Gestion ressource eau, Simulation, Barrage, Bassin versant, Stratégie, Culture, ENSO, Coton.
Wicri :
- geographic : Australie.
- topic : Irrigation, Simulation, Culture, Coton.

English descriptors

KwdEn :
- Australia, El Nino, dams, drainage basins, irrigation, oscillations, simulation, strategy, streamflow, water resource management.

Abstract

High climatic variability in northeast Australia, combined with limited water resources and increasing demand, makes the task of managing irrigation water and cropping decisions more complex. In this paper we explore the relationship between the El Niño-Southem Oscillation (ENSO) and the Inter-decadal Pacific Oscillation (IPO) on long-term streamflow. A functional relationship for forecasting streamflow and water availability will allow improved management of water resources and cropping decisions. Our results show that streamflow can be forecast during the peak irrigation demand period (October-January) using the Southern Oscillation Index (SOI) up to four months in advance. The impact of ENSO on streamflow is modulated by IPO phases with a substantial strengthening of La Niña episodes during the cold (negative) phase of IPO. Simulation of dam inflow and water allocation shows that the volume of irrigation water in La Niña years is significantly more than that in El Nifio years; the resulting increase of some 20% in total crop area has a potential revenue of Au$40 million in the study catchment. Economic analysis using gross margin shows that SOI-based planting strategies would result in the best economic return for cotton growers in this region.

Affiliations:

Australie

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 004899
to stream PascalFrancis, to step Curation: 001804
to stream PascalFrancis, to step Checkpoint: 004650
to stream Main, to step Merge: 00B300
to stream Main, to step Curation: 00A671

Le document en format XML

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<front><div type="abstract" xml:lang="en">High climatic variability in northeast Australia, combined with limited water resources and increasing demand, makes the task of managing irrigation water and cropping decisions more complex. In this paper we explore the relationship between the El Niño-Southem Oscillation (ENSO) and the Inter-decadal Pacific Oscillation (IPO) on long-term streamflow. A functional relationship for forecasting streamflow and water availability will allow improved management of water resources and cropping decisions. Our results show that streamflow can be forecast during the peak irrigation demand period (October-January) using the Southern Oscillation Index (SOI) up to four months in advance. The impact of ENSO on streamflow is modulated by IPO phases with a substantial strengthening of La Niña episodes during the cold (negative) phase of IPO. Simulation of dam inflow and water allocation shows that the volume of irrigation water in La Niña years is significantly more than that in El Nifio years; the resulting increase of some 20% in total crop area has a potential revenue of Au$40 million in the study catchment. Economic analysis using gross margin shows that SOI-based planting strategies would result in the best economic return for cotton growers in this region.</div>
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ENSO-based streamflow forecasting and its application to water allocation and cropping decisions : an Australian experience

ENSO-based streamflow forecasting and its application to water allocation and cropping decisions : an Australian experience

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri