Temperature Changes Over India in 21st Century

A Threat to Climate Change

Abstract

In the present paper an effort is made to analyse the temperature changes over India in the 21stcentury by using the Climate Wizard Tool.
Due to global warming climate of the world is going to change, this change will also effect India so badly.
Temperature departure projections from four global circulationmodels (GCMs) under three emission scenarios (A2, A1B, and B1)were used in the analysis. The analysis has been carried outfor two future time slices: mid-century (20402069) andend-century (20702099).
Results indicate positive departures throughout India with the greatest warming generally focused on the central region. A clear transition to a hotter climate from the mid-centurytoend-century is evident fromthe results.
This paper presents a framework and tool for practical climate-change analysis. The framework includes data sets recent past climate and future GCM climate simulations, standardized methods such as trend and departure analysis, the tool produces useful products in the form of maps, graphs and tables. This study demonstrated the analytic power of the Climate Wizard tool to analyze a set of data, and to summarize and visualize the results in innovative ways through maps, graphs, and an easy-to-use interactive mapping, the specialty and power of Climate Wizard is that it provides users with the flexibility to analyze any area of interest during any time period for which data are available. Moreover, using internet technologies and web-based mapping, this tool provides climate-change visualization capabilities that are so accurate and relevant for this type of analysis.
Findings of ensemble analysis indicate that, under A2 scenario 80 % of the models project an increase of 3 C for the midcenturyand 5 C for the end-century period. About 20% of the models indicated increases, under the conservative B1 scenario, of 1.67 and 2.24 C for the mid-century and end-century periods,respectively. Among the four models, the highest and the lowest departures were generally projected by the CGCM3.1and CSIROMk3.0 models, respectively. Of the three emissionScenarios, A2 tends to force greater warmingfor Scenarios. Mid-century as well as end-century, socioeconomic systems in India will face tremendous pressure due to significant warming projected, urgent measures are required to reduce greenhouse gas emissions in order to mitigate the impacts of warming. The results of this study could be used for future planning as they provide valuable aid to policymakers in formulating adaptation strategies to counter adverse impacts of climate change in India.