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June 14, 2026Progress in Disaster ScienceOpen Access

Seasonal variability and oceanic drivers of compound climate extremes in the coastal Ganges Delta (1971-2021)

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Authors

MKMohammad KamruzzamanMMMohammed MainuddinFKFazlul Karim

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Overview

Randomized trial investigates compound climate extremes in the coastal Ganges Delta, suggesting enhanced early warning systems are needed.

Key Points

  • This study aims to explore the long-term behavior and climatic drivers of compound climate extremes in the coastal Ganges Delta.
  • Analyzed 50 years of climate data (1971–2021) from the Climatic Research Unit (CRU).
  • Identified compound climate extremes using 25th and 75th percentile thresholds for temperature and precipitation.
  • Performed correlation and cross-wavelet coherence analyses with eight large-scale climate indices.
  • Wet/hot extremes increased by +0.09 dec −1 during JJAS and +0.03 dec −1 during MAM, affecting ~40% of the delta during monsoon months.
  • Positive correlation found between the Atlantic Multidecadal Oscillation (AMO) and pre-monsoon wet/hot events (r = 0.33, p < 0.05).
  • Negative correlation observed between the North Atlantic Oscillation (NAO) and monsoon hot events (r = -0.50, p ≤ 0.01).

Cite This Study

Kamruzzaman et al. (2026) studied this question.

synapsesocial.com/papers/6a2e44a3b1cc60ccdea8a2f9https://doi.org/10.1016/j.pdisas.2026.100624
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