Analysis of Rainfall Trends in Damodar Valley Area

  • Suman Chattopadhyay Regional Meteorological Centre Kolkata
  • Raja Acharya Regional Meteorological Centre Kolkata
  • AK Sen Regional Meteorological Centre Kolkata
Keywords: Rainfall, Trend analysis, Non parametric Mann-Kendall test, Sen's Test Estimate.

Abstract

This paper analyses annual and seasonal trends of rainfall in Damodar Valley Area (DVA) over the period of 46yrs from 1970 to 2015. Non parametric Mann-Kendall and Sen's Test Estimate are applied for detecting and estimating rainfall trends. An analysis of data indicates that rainfall in DVA has increasing trend with statistical significance in the post monsoon season. In the month of October, rainfall in all the three catchments increased. Major findings of this study include N Summer monsoon rainfall accounting for around 80% of total annual precipitation in the valley, (ii) Rainfall trends in all the three catchments, (iii) Increasing rainfall trend in post monsoon season, (iv) Decreasing rainfall trend in winter season and (iv) Different trends in sub-catchments.

Published
2024-02-10
How to Cite
Chattopadhyay, S., Acharya, R., & Sen, A. (2024). Analysis of Rainfall Trends in Damodar Valley Area. Vayumandal, 46(2), 61-72. Retrieved from https://vayumandal.imetsociety.org/index.php/Vayumandal/article/view/48
Issue
Vol 46 No 2 (2020): Vayumandal
Section
Research Paper

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