Interstadial diversity of East Asian summer monsoon linked to changes of the Northern Westerlies

The research bridges gaps in the understanding of how abrupt glacial climate events shape the regional hydroclimates. By analyzing high-resolution speleothem records from China and India alongside an isotope-enabled climate model.

The findings complement the conventional view that the Westerlies' shifts are simply binary-northward during all interstadials and southward during stadials. The study further reveals that southeast China is a key region for investigating the interactions between the East Asian Summer Monsoon and the Westerlies during millennial-to-centennial-scale events, while India and Southwest China are critical for studying the tropical direct response to the Atlantic Meridional Overturning Circulation.