Greenhouse warming and anthropogenic aerosols synergistically reduce springtime rainfall in low-latitude East Asia.

ABSTRACT: Low-latitude East Asia, particularly southern China, has experienced a markedly decreasing springtime rainfall in recent years whereas rainfall trends are weak in mid-latitude East Asia. Details of human influences on this contrasting feature remain uncertain. This study provides a quantification of the relative roles of greenhouse warming and aerosols in the observed spring rainfall trends over East Asia using a state-of-the-art numerical model. Greenhouse warming drives more rapid temperature increases over high-latitude East Asia potentially associated with reduced spring snow than the western North Pacific, which induces an anomalous anticyclone over the East China Sea. This circulation change results in a northwestward extension of the western North Pacific subtropical high, reducing

SUBMITTER: Ryu YH 

PROVIDER: S-EPMC9463665 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature