Examining Drought Behaviour Using Departure Index and Rainfall Anomaly Index for Nambiyar River Basin, Tamil Nadu

R Rajee; V Emayavaramban

doi:10.53989/bu.ge.v10i2.2

Article

VIEWS 491
PDF 137

Geo-Eye

DOI: 10.53989/bu.ge.v10i2.2

Year: 2021, Volume: 10, Issue: 2, Pages: 5-9

Original Article

Examining Drought Behaviour Using Departure Index and Rainfall Anomaly Index for Nambiyar River Basin, Tamil Nadu

R Rajee^1*, V Emayavaramban²

¹Research Scholar, Department of Geography, Madurai Kamaraj University, 625 021, Madurai
²Professor, Department of Geography, Madurai Kamaraj University, 625 021, Madurai

*Corresponding author
Email: [email protected]

Received Date:02 July 2021, Accepted Date:29 November 2021

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

Abstract

Drought is caused by a lack of long-term rainfall. The humans as well as environment are greatly affected due to drought. It is not related to particular climate regions but it causes similar effect in all climatic regions of the world. There are a number of drought prone areas in India so the Government of India has developed a Drought Affected Area Plan which is being implemented in drought prone areas. An attempt has been made in this paper studying two drought indices such as Departure Index (DI) and Rainfall Anomaly Index (RAI) in Nambiyar River Basin of Tamil Nadu to assess the drought condition. Only 3 classifications (moderate, mild and no droughts) are observed in Departure Index. Mild drought years are highly found in Nambiyar River basin followed by moderate and no droughts. Chidambarapuram, Nainaputhoor station had maximum drought of 24 years and 6 years of moderate drought is observed in Vallioor station. The frequency of drought years for RAI index are repeatedly noted high during the year 2003, 2016 and Keeriparai station had the highest negative anomaly value of -10.67 in the year 2017.

Keywords: Rainfall; RAI; DI; Nambiyar river basin; Drought

References

Degefu MA, Bewket W. Trends and spatial patterns of drought incidence in the omo‐ghibe river basin, ethiopia. Geografiska Annaler: Series A, Physical Geography. 2015;97(2):395–414. Available from: https://doi.org/10.1111/geoa.12080
Dennett MD, Elston J, Rodgers JA. A reappraisal of rainfall trends in the sahel. Journal of Climatology. 1985;5(4):353–361. Available from: https://doi.org/10.1002/joc.3370050402
3.Indian Meteorological Department (1971), Rainfall and Drought in India, Indian Meteorological Department, Government ofIndia, Poona, India . 1971.
Kao SCC, Govindaraju RS. A copula-based joint deficit index for droughts. Journal of Hydrology. 2010;380(1-2):121–134. Available from: https://doi.org/10.1016/j.jhydrol.2009.10.029
Agriculturalcommission report, National Commission on Agriculture, Ministry of Agriculture, Government of India. 1976.
Shiau JTT, Modarres R, Nadarajah S. Assessing Multi-site Drought Connections in Iran Using Empirical Copula. Environmental Modeling & Assessment. 2012;17(5):469–482. Available from: https://doi.org/10.1007/s10666-012-9318-2
Surendran U, Kumar V, Ramasubramoniam S, Raja P. Development of Drought Indices for Semi-Arid Region Using Drought Indices Calculator (DrinC) – A Case Study from Madurai District, a Semi-Arid Region in India. Water Resources Management. 2017;31(11):3593–3605. Available from: https://doi.org/10.1007/s11269-017-1687-5
Tilahun K. Analysis of rainfall climate and evapo-transpiration in arid and semi-arid regions of Ethiopia using data over the last half a century. Journal of Arid Environments. 2006;64(3):474–487. Available from: https://doi.org/10.1016/j.jaridenv.2005.06.013
Wilhite DA. Drought as a natural hazard: concepts and definitions. In: Drought: A Global Assessment . (pp. 3-18) Routledge, London. 2000.
Yagci AL, Di L, Deng M. The effect of land-cover change on vegetation greenness-based satellite agricultural drought indicators: a case study in the southwest climate division of Indiana, USA. International Journal of Remote Sensing. 2013;34(20):6947–6968. Available from: https://doi.org/10.1080/01431161.2013.810824
Zargar A, Sadiq R, Naser B, Khan FI. A review of drought indices. Environmental Reviews. 2011;19(NA):333–349. Available from: https://doi.org/10.1139/a11-013

Copyright

© 2021 Rajee & Emayavaramban. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Published By Bangalore University, Bengaluru, Karnataka