Connections and causes of inter-model spread in boreal summer precipitation across monsoon regions in AMIP6 simulations.

ABSTRACT: This study investigates the interconnections and underlying causes of the inter-model variability in boreal summer precipitation across global monsoon regions, based on historical AMIP6 simulations. The results reveal significant connections among the leading modes of precipitation inter-model deviations in different monsoon domains, with the western North Pacific (WNP) emerging as a key driver. Deviations over the WNP modulate adjacent monsoon systems -- including the South Asian, North African, and Australian monsoons -- primarily through the Walker and Hadley circulations. In addition, WNP precipitation anomalies, via jet stream disturbances originating from the tropical Indian Ocean, indirectly generate zonal wave trains in the mid-to-high latitudes of both hemispheres, influencing the

SUBMITTER: Wen N 

PROVIDER: S-EPMC12749211 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature