Regional Shift in the Peak Time of Maximum Indian Summer Monsoon Rainfall in Recent Decades

Kandula V. Subrahmanyam; Prashant Kumar; Narendra Reddy Nelli; Sampelli Anoop; M. V. Ramana; M. Rajeevan; Prakash Chauhan

doi:10.1029/2024GL112697

Regional Shift in the Peak Time of Maximum Indian Summer Monsoon Rainfall in Recent Decades

Kandula V. Subrahmanyam
, Prashant Kumar
, Narendra Reddy Nelli
, Sampelli Anoop
, M. V. Ramana
, M. Rajeevan
, Prakash Chauhan

Earth Science

ISRO
IIT Bombay

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Global warming is causing more extreme precipitation events and variability in rainfall patterns, which are affecting the timing of peak rainfall occurrence and impacting the hydrological cycle in evolving climates. This study examines spatial rainfall trends across India during the Indian Summer Monsoon period from 2001 to 2020, utilizing GSMaP_ISRO data. Analysis reveals a significant rise of 2 mm/day in rainfall over west central India from 2011 to 2020. Additionally, an investigation into the timing of peak rainfall demonstrates an early (late) peak over the Indo-Gangetic Plain (central India) in recent years, likely influenced by changes in aerosol loading. The present results suggest a significant shift in rainfall peak time with potential implications for agriculture, hydrology, and disaster management.

Original language	British English
Article number	e2024GL112697
Journal	Geophysical Research Letters
Volume	52
Issue number	6
DOIs	https://doi.org/10.1029/2024GL112697
State	Published - 28 Mar 2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Keywords

GSMaP_ISRO
indian summer monsoon
peak time
rainfall

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10.1029/2024GL112697

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Cite this

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title = "Regional Shift in the Peak Time of Maximum Indian Summer Monsoon Rainfall in Recent Decades",

abstract = "Global warming is causing more extreme precipitation events and variability in rainfall patterns, which are affecting the timing of peak rainfall occurrence and impacting the hydrological cycle in evolving climates. This study examines spatial rainfall trends across India during the Indian Summer Monsoon period from 2001 to 2020, utilizing GSMaP\_ISRO data. Analysis reveals a significant rise of 2 mm/day in rainfall over west central India from 2011 to 2020. Additionally, an investigation into the timing of peak rainfall demonstrates an early (late) peak over the Indo-Gangetic Plain (central India) in recent years, likely influenced by changes in aerosol loading. The present results suggest a significant shift in rainfall peak time with potential implications for agriculture, hydrology, and disaster management.",

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AU - Kumar, Prashant

AU - Nelli, Narendra Reddy

AU - Anoop, Sampelli

AU - Ramana, M. V.

AU - Rajeevan, M.

AU - Chauhan, Prakash

PY - 2025/3/28

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AB - Global warming is causing more extreme precipitation events and variability in rainfall patterns, which are affecting the timing of peak rainfall occurrence and impacting the hydrological cycle in evolving climates. This study examines spatial rainfall trends across India during the Indian Summer Monsoon period from 2001 to 2020, utilizing GSMaP_ISRO data. Analysis reveals a significant rise of 2 mm/day in rainfall over west central India from 2011 to 2020. Additionally, an investigation into the timing of peak rainfall demonstrates an early (late) peak over the Indo-Gangetic Plain (central India) in recent years, likely influenced by changes in aerosol loading. The present results suggest a significant shift in rainfall peak time with potential implications for agriculture, hydrology, and disaster management.

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KW - peak time

KW - rainfall

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DO - 10.1029/2024GL112697

M3 - Article

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ER -

Regional Shift in the Peak Time of Maximum Indian Summer Monsoon Rainfall in Recent Decades

Abstract

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Keywords

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