Assessment of rainfall trend over Periyar Vaigai Command area of Tamil Nadu

Authors

  • Dharani C. SRM College of Agriculture Sciences, SRMIST, Chengaplattu, 603201
  • N. Maragatham Agro Climate Research Centre, Tamil Nadu Agricultural University, Coimbatore, 641003
  • V. Geethalakshmi Agro Climate Research Centre, Tamil Nadu Agricultural University, Coimbatore, 641003
  • SP. Ramanathan Agro Climate Research Centre, Tamil Nadu Agricultural University, Coimbatore, 641003
  • Balaji Kannan Water Technology Centre, Tamil Nadu Agricultural University, Coimbatore, 641003

DOI:

https://doi.org/10.54302/mausam.v75i4.5968

Keywords:

Rainfall, trend analysis, Periyar Vaigai Command area

Abstract

Rainfall trend analysis is critical for studying the effects of climate change. The most crucial aspect of understanding climate change at the basin level is, how it will affect water usage, planning, and development. The present study has been attempted to analyze the trend of annual and seasonal rainfall data over Periyar Vaigai Command area from 1982 – 2021 (40 years) employing different trend analysis methods i.e., Mann-Kendall test for trend significance, Sequential Mann-Kendall test for assessment of start and end of trend, Sen’s slope test for trend magnitude, Innovative Trend Analysis for combination of trends and linear regression analysis for trend detection. Statistically positive trend was detected in summer season using all methods whereas, annual and SWM rainfall showed a statistically significant decreasing trend. Winter and NEM rainfall resulted with no significant trend. The results from this study helps to adopt various water management practices and useful for policy makers to prepare appropriate mitigation strategies.

Downloads

Published

01-10-2024

How to Cite

[1]
D. C., N. . Maragatham, V. . Geethalakshmi, S. . Ramanathan, and . B. Kannan, “Assessment of rainfall trend over Periyar Vaigai Command area of Tamil Nadu”, MAUSAM, vol. 75, no. 4, pp. 1125–1132, Oct. 2024.

Issue

Vol. 75 No. 4 (2024): MAUSAM

Section

Shorter Contribution

License

Copyright (c) 2024 MAUSAM

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

All articles published by MAUSAM are licensed under the Creative Commons Attribution 4.0 International License. This permits anyone.

Anyone is free:

  • To Share - to copy, distribute and transmit the work
  • To Remix - to adapt the work.

Under the following conditions:

  • Share - copy and redistribute the material in any medium or format
  • Adapt - remix, transform, and build upon the material for any purpose, even
    commercially.