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Abrupt changes in mean temperature over India during 1901–2010

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Abstract

Since eternity, the Earth’s temperature has varied or fluctuated; it has its cooling and hot timing dependency on its orbital position as well as the isolation received from the Sun. The global climate continues to change rapidly compared to the speed of the natural variations in climate. Therefore, the spatially complete representations of surface climate are required for many purposes in applied sciences. But in recent centuries, the main matter of concern is that Earth’s normal temperature fluctuation is being influenced by some external factors such as enhanced greenhouse gases because of extreme uses of fossil fuels, severe industrialization, advance urbanization, etc. This study presents a comprehensive surface temperature dataset of Climatic Research Unit (CRU) available since 1901 for India, which is used to document significant changes in Indian temperature over ten decades, during winter season (January and February), pre-monsoon (March–May), monsoon (June–September) and post-monsoon (October–December) to examine the patterns and possible effects of global warming. A strong increasing pattern is observed with the fast growing of the development after 1950 which has shown nearly doubled in the last 50 yrs. The mean temperature during winter for the 2000s shows a consistent pattern of warming over the Himalayan region, northwestern and southern India, and a pattern of the warming observed over northeastern India and extending southwestward across central India during post-monsoon.

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Acknowledgements

This work is a part of an R&D project funded by Department of Science and Technology (DST) PURSE grant. The authors wish to thank to Climate Research Unit (CRU) for providing the necessary data.

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Authors and Affiliations

  1. Department of Geophysics, Institute of Science, Banaras Hindu University, Varanasi, India

    R Bhatla, Shruti Verma & Soumik Ghosh

  2. DST-Mahamana Centre of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India

    R Bhatla

  3. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, USA

    Soumik Ghosh

  4. Department of Botany (Section: Environmental Science), Banaras Hindu University, Varanasi, India

    Ankita Gupta

Authors
  1. R Bhatla
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  2. Shruti Verma
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  3. Soumik Ghosh
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  4. Ankita Gupta
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Corresponding author

Correspondence to R Bhatla.

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Communicated by A K Sahai

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Bhatla, R., Verma, S., Ghosh, S. et al. Abrupt changes in mean temperature over India during 1901–2010. J Earth Syst Sci 129, 166 (2020). https://doi.org/10.1007/s12040-020-01421-0

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  • DOI: https://doi.org/10.1007/s12040-020-01421-0

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