Figure 1: TRACE simulation and observations for EASM and EAWM in the last 20,000 years. | Nature Communications

Figure 1: TRACE simulation and observations for EASM and EAWM in the last 20,000 years.

From: Correlation and anti-correlation of the East Asian summer and winter monsoons during the last 21,000 years

Figure 1

(a) December-January-February (DJF) (solid line) and June-July-August (JJA) (dashed line) insolation at 45° N. (b) Melting water flux (in equivalent global sea level per 1,000 years) into the North Atlantic (black) and Southern Ocean (grey) in TRACE21. (c) δ18O (grey) from Dongge and Hulu caves (Wang et al.3), precipitation δ18O simulated in isotope-enable snapshot experiments (blue circles, Liu et al.26) and EASM wind index in TRACE21 (red). (d) SCS SST gradient index (dSST) for EAWM in the reconstruction (grey, Huang et al.16) and in TRACE21 (blue), EAWM wind index in TRACE21 (red). (e) Sediment Ti content from Lake Huguang Maar (grey) that was considered as an EAWM indicator by Yancheva et al.14, and the simulated meridional wind speed (red) near Lake Huguang Maar in TRACE21. (f) Modern June–August climatology of surface temperature and 850 mb winds in TRACE21, the locations for Hulu and Dongge caves (cyan stars), the model domain (110–120 E, 30–40 N) for calculating the EASM meridional wind index at 850 mb. (g) Modern December–February climatology of surface temperature and 1,000 mb winds in TRACE21, the location of Lake Huguang Maar (cyan star) and the sites for Huang’s (2011) SST index (two solid and two open circles), and the model domain (110–130 E, 20–30 N) for calculating the EAWM meridional wind index at 1,000 mb. Three cold events, Heinrich 1 (H1), Younger Dryas (YD) and 8.2 ka, are marked as the blue vertical panels. The warm event Bølling-Allerød (BA) is marked as the yellow vertical panel.

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