Title: Analysis of extremes and variabilities in Indian summer monsoon rainfall using integrated ground and satellite datasets

Authors: Pushpanjali Kumari; Prabeer Kumar Parhi; Mata Mahakur; Satyank Mishra

Addresses: Department of Civil Engineering, Central University of Jharkhand, Jharkhand, 835205, India ' Department of Civil Engineering, Central University of Jharkhand, Jharkhand, 835205, India ' Indian Institute of Tropical Meteorology, Pune, Maharashtra, 411008, India ' Department of Civil Engineering, Central University of Jharkhand, Jharkhand, 835205, India

Abstract: This study deals with analysis of Indian summer monsoon rainfall spanning from June to September. The datasets utilised are Asian Precipitation Highly Resolved Observational Data Integration Towards Evaluation of Water Resources (APHRODITE) for the period from 1951 to 2007, and the Climate Prediction Centre (CPC) for the period from 2002 to 2017. It focuses on extreme precipitation events in the South Asian region, with an emphasis on the Indian subcontinent. The findings reveal an increasing number of extreme events and more intense rainfall in certain areas, despite a yearly decline in average monsoon rainfall across India. Over the long term (1871-2016), the trend reveals an annual decrease in monsoon rainfall, dropping by about -0.201 mm each year. Further, APHRODITE data indicates a decline in extreme rain events across most of India, while CPC data presents a different perspective.

Keywords: All-India summer monsoon; extreme precipitation; monsoon rainfall; APHRODITE; Asian Precipitation Highly Resolved Observational Data Integration Towards Evaluation of Water Resources; CPC; Climate Prediction Centre.

DOI: 10.1504/IJW.2024.144661

International Journal of Water, 2024 Vol.16 No.3, pp.209 - 221

Received: 20 Apr 2024
Accepted: 06 Oct 2024
Published online: 26 Feb 2025 *

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