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May 9, 2026Theoretical and Applied ClimatologyOpen Access

Spatial and temporal dynamics of coral bleaching, 1982–2023: hotspot persistence and ENSO-phase contrasts

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Authors

SRShouraseni Sen Roy

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Overview

Randomized trial investigates coral bleaching patterns globally, highlighting ENSO's implications for conservation.

Key Points

  • This research aims to quantify the long-term patterns of coral bleaching and evaluate the effect of ENSO phases on its prevalence.
  • Analyzed data from the Global Coral Bleaching Database covering 32,554 records from 1982-2023.
  • Performed three geospatial analyses: annual central feature analysis, Emerging Hot Spot Analysis, and optimized outlier analysis.
  • Identified spatial clusters of bleaching events in relation to ENSO phases.
  • Identified three primary cluster types during El Niño for maximum percent bleached: sporadic hot spots (22.78%), oscillating cold spots (13.51%), and oscillating hot spots (3.09%).
  • For minimum percent bleached, only two types were found: oscillating cold spots (13.51%) and sporadic hot spots (7.34%).
  • Significant clustering observed during ENSO phases with p-values of 0.05 or lower, indicating spatial and temporal variations in bleaching responses.

Cite This Study

Shouraseni Sen Roy (2026) studied this question.

synapsesocial.com/papers/69fed19ab9154b0b82879042https://doi.org/10.1007/s00704-026-06293-w
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