Science

Ancient climate records reveal how East Asian monsoon shifted abruptly into cold and drought

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Briefings

Researchers from Utrecht University and institutes in China and Belgium analyzed 250,000 years of climate data to find that the East Asian monsoon shifts abruptly into cold and drought when solar radiation drops below a threshold, especially during low atmospheric CO2 periods. The findings were published in Communications Earth & Environment.

Key points

• The study analyzed 250,000 years of climate data to identify abrupt shifts in the East Asian monsoon system.
• These shifts occur when incoming solar radiation falls below a specific threshold, leading to extreme cold and drought conditions.

Context

This research investigates how long-term changes in Earth's orbit and tilt influence the East Asian monsoon, with a focus on the conditions that trigger abrupt transitions to cold and drought states.

Limitations

The evidence is limited to a single study published in Communications Earth & Environment, which may not represent the full range of historical variability or future projections.

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