Science Update: Improved annular mode variability using a very high resolution AGCM

E. Palipane and co-authors, in a recent GRL paper, use the ECMWF IFS global AGCM run at 16km resolution to assess the benefit of resolving sub-synoptic to mesoscale processes on annular mode (AM) variability. The model run at this resolution was found to be more skilful, particularly in terms of the variance of AMs, the intrinsic e-folding time scales of the AMs, as well as the downward influence from the stratosphere to the troposphere in the AMs. The full abstract can be found here.