Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover.

ABSTRACT: The exceptional atmospheric conditions that have accelerated Greenland Ice Sheet mass loss in recent decades have been repeatedly recognized as a possible dynamical response to Arctic amplification. Here, we present evidence of two potentially synergistic mechanisms linking high-latitude warming to the observed increase in Greenland blocking. Consistent with a prominent hypothesis associating Arctic amplification and persistent weather extremes, we show that the summer atmospheric circulation over the North Atlantic has become wavier and link this wavier flow to more prevalent Greenland blocking. While a concomitant decline in terrestrial snow cover has likely contributed to this mechanism by further amplifying warming at high latitudes, we also show that there is a direct stationary Rossb

SUBMITTER: Preece JR 

PROVIDER: S-EPMC10290063 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature