Discrepancies between observations and climate models of large-scale wind-driven Greenland melt influence sea-level rise projections.

ABSTRACT: While climate models project that Greenland ice sheet (GrIS) melt will continue to accelerate with climate change, models exhibit limitations in capturing observed connections between GrIS melt and changes in high-latitude atmospheric circulation. Here we impose observed Arctic winds in a fully-coupled climate model with fixed anthropogenic forcing to quantify the influence of the rotational component of large-scale atmospheric circulation variability over the Arctic on the temperature field and the surface mass/energy balances through adiabatic processes. We show that recent changes involving mid-to-upper-tropospheric anticyclonic wind anomalies - linked with tropical forcing - explain half of the observed Greenland surface warming and ice loss acceleration since 1990, suggesting a pathwa

SUBMITTER: Topal D 

PROVIDER: S-EPMC9663692 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature