2 ka和8.2 ka事件时期东亚季风区水文气候空间模态差异

Key Points

• The study aims to explore the differences in hydrometeorological spatial modes during the 4.2 ka and 8.2 ka events in East Asia.
• Analysis of geological records, including δ18O measurements from stalagmites.
• Review of paleoclimate models to assess spatial responses in hydrometeorology.
• Comparison of data from lakes and peat records in southern East Asia.
• 4.2 ka event shows significant spatial heterogeneity in hydrometeorological changes.
• 8.2 ka event reveals conflicting evidence: geological records indicate uniform drying while climate models suggest spatial heterogeneity.
• Most high-resolution records in southern regions derive from stalagmites, lacking evidence for drying signals.