Rainfall variability analysis using Precipitation Concentration Index: a case study of the western agro-climatic zone of Punjab, India

Due to climate change, the rainfall pattern has changed, which ultimately either cause flood or drought in any region of the world. Hence, a rainfall variability analysis helps to manage the water resources better. Rainfall variability analysis of a long term at particular area reveals vital informa...

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Bibliographic Details
Published in:The Indonesian journal of geography 2021-12, Vol.53 (3), p.388-399
Main Authors: Rawat, Kishan Singh, Pal, Raj Kumar, Singh, Sudhir Kumar
Format: Article
Language:English
Subjects:
Agricultural research
Artificial recharge
Climate change
Drought
Groundwater recharge
Hydrologic data
Hydrology
Monsoons
Precipitation
Rain
Rainfall
Rainfall distribution
Seasons
Variability
Water resources
Wind
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Summary:Due to climate change, the rainfall pattern has changed, which ultimately either cause flood or drought in any region of the world. Hence, a rainfall variability analysis helps to manage the water resources better. Rainfall variability analysis of a long term at particular area reveals vital information about past and future climate. The study's objective was to analyse the rainfall variability and intensity of long term monthly rainfall data (1982–2018) using the Precipitation Concentration Index (PCI). Data was collected from Punjab Agricultural University, Regional Research Station, located at Bathinda, India. The PCI was calculated for the annual, winter, pre-monsoon, monsoon, post-monsoon season, and decadal scale. Results have outlined that PCIAnnual ranges from the lowest of 14.96 in 2006 to the highest of 43.82 in 2000, and the average of 37 years is 23.22. About ≈59.5% of the year PCIAnnual was characterised by Strong Irregularity of Precipitation Distribution (SIPD, PCIAnnual> 20), an indication of SIPD within the 37 years. While ≈2.7% of the year recorded annual value within the moderate irregular range (10
ISSN:0024-9521
2354-9114
DOI:10.22146/ijg.64890