Impact of Climate Change on the Hydrology of Mahanadi River Basin

By: Pandey, PoojaContributor(s): Patra, Kanhu Charan [Supervisor] | Khatua, Kishanjeet Kumar [Supervisor] | Department of Civil EngineeringMaterial type: TextTextLanguage: English Publisher: 2015Description: 96 pSubject(s): Engineering and Technology | Civil Engineering | Water Resources EngineeringOnline resources: Click here to access online Dissertation note: Thesis M.Tech (R) National Institute of Technology, Rourkela Summary: Abstract The increasing rate of global surface temperature is going to have significant impact on local hydrological regimes and thus on water resources, this leads to the assessment of water resources potential resulting from the climate change impacts. Main parameters that are closely related to the climate change are temperature, precipitation and runoff. Therefore, there is a growing need for an integrated analysis that can quantify the impacts of climate change on various aspects of water resources. The present work intends to determine climate change impact on the hydrological processes in the Mahanadi River Basin through:(1) Statistical analysis of historical and future climate trends, (2) use of General Circulation Models (GCM) for simulating the response of climate variables globally, accounting for the effects of greenhouse gases in the atmosphere, (3) use of statistical downscaling technique to model the hydrology variables (e.g., precipitation) at a smaller scale based on large scale GCM outputs, (4) use of hydrological modelling for assessment of global climate change impacts. Statistical trend analysis has been done using Mann Kendall Test and Sen’s Slope Estimator to find out the magnitude of the trend for the historical and future records. Statistical downscaling model has been used to predict the future precipitation and temperature time series from the year 2011 to 2099 by using HadCM3 coupled model. Artificial Neural Network (ANN) and Multiple Linear Regression analysis has been used to predict the future runoff from the precipitation and temperature.
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Thesis (Ph.D/M.Tech R) Thesis (Ph.D/M.Tech R) BP Central Library
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Thesis M.Tech (R) National Institute of Technology, Rourkela

Abstract

The increasing rate of global surface temperature is going to have significant impact on local hydrological regimes and thus on water resources, this leads to the assessment of water resources potential resulting from the climate change impacts. Main parameters that are closely related to the climate change are temperature, precipitation and runoff. Therefore, there is a growing need for an integrated analysis that can quantify the impacts of climate change on various aspects of water resources. The present work intends to determine climate change impact on the hydrological processes in the Mahanadi River Basin through:(1) Statistical analysis of historical and future climate trends, (2) use of General Circulation Models (GCM) for simulating the response of climate variables globally, accounting for the effects of greenhouse gases in the atmosphere, (3) use of statistical downscaling technique to model the hydrology variables (e.g., precipitation) at a smaller scale
based on large scale GCM outputs, (4) use of hydrological modelling for assessment of global climate change impacts. Statistical trend analysis has been done using Mann Kendall Test and Sen’s Slope Estimator to find out the magnitude of the trend for the historical and future records. Statistical downscaling model has been used to predict the future precipitation and temperature time series from the year 2011 to 2099 by using HadCM3 coupled model. Artificial Neural Network (ANN) and Multiple
Linear Regression analysis has been used to predict the future runoff from the precipitation and
temperature.

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