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Related Experiment Video

Updated: Jun 19, 2025

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

Deep ocean warming-induced El Niño changes.

Geon-Il Kim¹, Ji-Hoon Oh¹, Na-Yeon Shin¹

¹School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea.

Nature Communications

|July 23, 2024

Summary

This summary is machine-generated.

Deep ocean warming from greenhouse gases will cause El Niño-like conditions and increase extreme El Niño events. This prolonged ocean warming impacts climate patterns even after CO2 emissions are reduced.

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Area of Science:

Climate Science
Oceanography
Atmospheric Science

Background:

The deep ocean acts as a significant thermal reservoir, absorbing excess heat generated by greenhouse gas emissions.
This absorbed heat influences global climate regulation and will be released over time, impacting future ocean warming patterns.

Purpose of the Study:

To investigate the impact of deep ocean warming on El Niño-Southern Oscillation (ENSO) events.
To determine how delayed deep ocean heat release affects tropical Pacific precipitation and ENSO characteristics.

Main Methods:

Analysis of climate model outputs simulating deep ocean warming scenarios.
Assessment of changes in sea surface temperatures, precipitation patterns, and ENSO dynamics.

Main Results:

Deep ocean warming drives El Niño-like sea surface warming in the tropical eastern Pacific.
Increased precipitation is projected for the eastern Pacific, with a southward shift in the intertropical convergence zone.
El Niño-Southern Oscillation events are projected to shift eastward, intensifying Eastern Pacific El Niño occurrences.
Convective extreme El Niño events may increase by 40-80% under deep ocean warming conditions.

Conclusions:

Anthropogenic greenhouse warming has a lasting effect on El Niño variability due to delayed deep ocean warming.
Even with CO2 stabilization, the release of stored deep ocean heat will continue to influence climate patterns for extended periods.