Climate impacts and Arctic precursors of changing storm track activity in the Atlantic-Eurasian region.

ABSTRACT: Midlatitude storm tracks are preferred regions of intense activity of synoptic eddies shaping the day-to-day weather and several aspects of surface climate. Here statistical analyses of observationally-based atmospheric data and observed Arctic sea ice concentration (SIC) in the period 1979-2017 are used to identify linkages of a dominant mode of interannual variability in wintertime upper-tropospheric storm track activity over Eurasia (STA_EA mode) to the concurrent surface climate anomalies and pre-winter Arctic SIC variations. This mode explains an exceptionally large fraction (about 70% of the variance) of the North Atlantic Oscillation (NAO) and of a dominant mode of Eurasian surface air temperature variations. As more than 50% of the variance of the STA_EA mode an

SUBMITTER: Schlichtholz P 

PROVIDER: S-EPMC6290774 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature