Fig. 3: The “Trapezoid-style” EASM changes during the AIM events. | Communications Earth & Environment

Fig. 3: The “Trapezoid-style” EASM changes during the AIM events.

From: Asian monsoon intensity coupled to Antarctic climate during Dansgaard–Oeschger 8 and Heinrich 4 glacial intervals

Fig. 3

We aligned the weak monsoon events in YX (orange lines) and AIM events (including AIM6, AIM7 and AIM8 events) in the EDC δ18Oice (a–c) and WDC δ18Oice (d–f) records (blue lines). The comparison is within the AICC2012/WD2014 chronology’s uncertainties, 500~900 years for AICC2012 and 350~400 years for WD20145,7,51,87. Strong positive Pearson correlation coefficients are found of YX with EDC record (r = 0.55, n = 750, p < 0.01, Fig. 1c, with the EDC record tuned older by 340 years), and with WDC record (r = 0.74, n = 788, p < 0.01, Fig. 1c, with the WDC record tuned older by 200 years). Yellow bars indicate centennial to sub-centennial fluctuations in three records.

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