Shift in date of onset of the southwest monsoon in India from 146 years of data exploring the change in distribution using non-parametric polynomial estimators

T. Unnikrishnan, P Anilkumar, Kadambot Siddique

Research output: Contribution to journalArticle

Abstract

The accurate date of onset of the southwest monsoon in India is unpredictable due to its complexity in estimation.
However, it appears that in recent years the onset of the southwest monsoon has been occurring earlier than ‘normal’. Therefore, we studied the change in distribution of the date of onset of the southwest monsoon in India using a recently developed, highly efficient non-parametric method, the ‘non-parametric polynomial estimator’. The polynomial estimator was used to estimate the
non-parametric distribution of the frequency of occurrence of the onset of the southwest monsoon in India from 1870 to 2015. The 146-year data was split in to three time periods and analyzed; removing the middle time periodshoweda clear shift in the median of the observed values towards an earlier date.
Original languageEnglish
Pages (from-to)668-673
Number of pages6
JournalInternational Journal for Research in Applied Science & Engineering Technology
Volume5
Issue number12
Publication statusPublished - Dec 2017

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