Sensitivity of winter North Atlantic-European climate to resolved atmosphere and ocean dynamics.

ABSTRACT: Northern Hemisphere western boundary currents, like the Gulf Stream, are key regions for cyclogenesis affecting large-scale atmospheric circulation. Recent observations and model simulations with high-temporal and -spatial resolution have provided evidence that the associated ocean fronts locally affect troposphere dynamics. A coherent view of how this affects the mean climate and its variability is, however, lacking. In particular the separate role of resolved ocean and atmosphere dynamics in shaping the atmospheric circulation is still largely unknown. Here we demonstrate for the first time, by using coupled seasonal forecast experiments at different resolutions, that resolving meso-scale oceanic variability in the Gulf Stream region strongly affects mid-latitude interannual atmospheric

SUBMITTER: Haarsma RJ 

PROVIDER: S-EPMC6746796 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature