Extrapolar climate reversal during the last deglaciation.

ABSTRACT: Large ocean-atmosphere and hydroclimate changes occurred during the last deglaciation, although the interplay between these changes remains ambiguous. Here, we present a speleothem-based high resolution record of Northern Hemisphere atmospheric temperature driven polar jet variability, which matches the Greenland ice core records for the most of the last glacial period, except during the last deglaciation. Our data, combined with data from across the globe, show a dramatic climate reversal during the last deglaciation, which we refer to as the Extrapolar Climate Reversal (ECR). This is the most prominent feature in most tropical and subtropical hydroclimate proxies. The initiation of the ECR coincides with the rapid rise in CO₂, in part attributed to upwelling in the Southern Oc

SUBMITTER: Asmerom Y 

PROVIDER: S-EPMC5541005 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature