ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Hydroclimatic influence of large-scale circulation on the variability of reservoir inflow

Maity, Rajib and Kumar, Nagesh D (2009) Hydroclimatic influence of large-scale circulation on the variability of reservoir inflow. In: Hydrological Processes, 23 (6). pp. 934-942.

[img] PDF
5.pdf - Published Version
Restricted to Registered users only

Download (179Kb) | Request a copy
Official URL: http://www3.interscience.wiley.com/journal/1216344...

Abstract

In this study, the nature of basin-scale hydroclimatic association for Indian subcontinent is investigated. It is found that, the large-scale circulation information from Indian Ocean is also equally important in addition to the El Nino-Southern Oscillation (ENSO), owing to the geographical location of Indian subcontinent. The hydroclimatic association of the variation of monsoon inflow into the Hirakud reservoir in India is investigated using ENSO and EQUatorial INdian Ocean Oscillation (EQUINOO, the atmospheric part of Indian Ocean Dipole mode) as the large-scale circulation information from tropical Pacific Ocean and Indian Ocean regions respectively. Individual associations of ENSO & EQUINOO indices with inflow into Hirakud reservoir are also assessed and found to be weak. However, the association of inflows into Hirakud reservoir with the composite index (CI) of ENSO and EQUINOO is quite strong. Thus, the large-scale circulation information from Indian Ocean is also important apart form the ENSO. The potential of the combined information of ENSO and EQUINOO for predicting the inflows during monsoon is also investigated with promising results. The results of this study will be helpful to water resources managers due to fact that the nature of monsoon inflow is becoming available as an early prediction.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: Hydroclimatic association;ENSO; EQUINOO;Monsoon;Reservoirs inflow;India;Prediction.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 12 Aug 2009 09:44
Last Modified: 19 Sep 2010 05:29
URI: http://eprints.iisc.ernet.in/id/eprint/19684

Actions (login required)

View Item View Item