Multimodeling Approach to Assess the Impact of Climate Change on Water Availability and Rice Productivity: A Case Study in Cauvery River Basin, Tamil Nadu, India

Authored by: V. Geethalakshmi , K. Bhuvaneswari , A. Lakshmanan , Nagothu Udaya Sekhar , Sonali Mcdermid , A. P. Ramaraj , R. Gowtham , K. Senthilraja

Groundwater Assessment, Modeling, and Management

Print publication date:  July  2016
Online publication date:  September  2016

Print ISBN: 9781498742849
eBook ISBN: 9781315369044
Adobe ISBN:

10.1201/9781315369044-39

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Abstract

Understanding the interactions among different components of the Earth’s physical system and the influence of human activities on the environment has progressed immensely; however, the climatic impacts of increasing greenhouse gases (GHGs) are still quite uncertain (Jones, 2000). The most detailed atmosphere-ocean general circulation models (AOGCMs) differ in the predicted climate change for a given increase in GHGs (Murphy et al., 2004; Stainforth et al., 2005). This large uncertainty introduced in projecting the future climate is further confounded by uncertainty in the impact assessment using impact models such as hydrological or crop simulation models (Wilby, 2005; Challinor et al., 2009; Hawkins and Sutton, 2009; Osborne et al., 2013).

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