Journal of Earth System Science

, Volume 125, Issue 7, pp 1313–1319

Long-term changes in the within-season temporal profile of southwest monsoon over western India

  • Satyendra Bhandari
  • Rohit Srivastava
  • Vikram Mehta
Article
  • 142 Downloads

Abstract

This paper presents results of a study of long term trends in the characteristics of the within-season temporal profile of southwest monsoon rainfall over western India during the last five decades in relation to global warming induced regional climate change. In contrast to recent climate change analyses and projections, no significant long-term trends have been observed in this study. Slow decadal scale variations observed are analysed in relation to Pacific Decadal Oscillations (PDO). Daily variations in rainfall anomaly show opposite characteristics during negative and positive phases of PDO. The above-normal rainfall (>25%) is found during the starting phase of monsoon in negative PDO. Over the last decade, i.e., during 2000–2007, the seasonal rainfall amount, as well as seasonal span of southwest monsoon over western India is indicative of a gradual increase.

Keywords

Southwest monsoon decadal climate variability Pacific decadal oscillations. 

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Copyright information

© Indian Academy of Sciences 2016

Authors and Affiliations

  • Satyendra Bhandari
    • 1
  • Rohit Srivastava
    • 1
  • Vikram Mehta
    • 2
  1. 1.Indian Centre for Climate and Societal Impacts Research (ICCSIR) MandviKachchhIndia
  2. 2.The Centre for Research on the Changing Earth System (CRCES)CatonsvilleUSA

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