• Hydroclimatic fluctuations of the Upper Narmada catchment and its association with break-monsoon days over India

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      https://www.ias.ac.in/article/fulltext/jess/097/01/0087-0105

    • Keywords

       

      Seasonal rainfall; precipitation concentration index; hydrological floods and droughts; rainfall period; break-monsoon days

    • Abstract

       

      In this paper, hydroclimatic fluctuations of the Upper Narmada catchment (upto Narmadasagar damsite) have been studied by examining the time series (1901–80) of (i) 1-to 10-day annual extreme rainfall; (ii) seasonal total rainfall between May and October; (iii) the precipitation concentration index (PCI); (iv) a modified version of PCI(MPCI); and (v) parameters of the periods contributing specified percentages of rainfall to annual total. Most of these parameters followed the normal distribution and did not show any significant long-term trend. However, some dominant long period oscillations have been noticed in extreme rainfall, seasonal rainfall, PCI and MPCI series. Influence of break-monsoon days over India during July and August on the rainfall activities of the Upper Narmada catchment has also been investigated and salient findings discussed.

    • Author Affiliations

       

      Nityanand Singh1 M K Soman1 K Krishna Kumar1

      1. Indian Institute of Tropical Meteorology, Pune - 411005, India
    • Dates

       
  • Journal of Earth System Science | News

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