Century-long West Antarctic snow accumulation changes induced by tropical teleconnections.

ABSTRACT: Ice core measurements reveal dipole-like snow accumulation trends over West Antarctica throughout the 20th century, with an increase of >2000 billion metric tons over the Antarctic Peninsula and Ellsworth Land but a decrease of ~500 billion metric tons over Marie Byrd Land. Although atmospheric teleconnections were frequently revealed, linking variability between tropics and higher latitudes on interannual and decadal timescales, centennial-scale teleconnection is absent from literature. Here, using statistical analysis and numerical experiments, we reveal that changes of tropical oceans throughout the 20th century drive the long-term Antarctic snowfall trend. A pronounced warming over the tropical Atlantic and a moderate cooling over the equatorial Pacific have driven an adjustment of moi

SUBMITTER: Man K 

PROVIDER: S-EPMC11777206 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature