The Signature of Southern Hemisphere Atmospheric Circulation Patterns in Antarctic Precipitation.

ABSTRACT: We provide the first comprehensive analysis of the relationships between large-scale patterns of Southern Hemisphere climate variability and the detailed structure of Antarctic precipitation. We examine linkages between the high spatial resolution precipitation from a regional atmospheric model and four patterns of large-scale Southern Hemisphere climate variability: the southern baroclinic annular mode, the southern annular mode, and the two Pacific-South American teleconnection patterns. Variations in all four patterns influence the spatial configuration of precipitation over Antarctica, consistent with their signatures in high-latitude meridional moisture fluxes. They impact not only the mean but also the incidence of extreme precipitation events. Current coupled-climate models are able

SUBMITTER: Marshall GJ 

PROVIDER: S-EPMC5784396 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature