Articles | Volume 5, issue 2
Research article
26 Apr 2024
Research article |  | 26 Apr 2024

Life cycle dynamics of Greenland blocking from a potential vorticity perspective

Seraphine Hauser, Franziska Teubler, Michael Riemer, Peter Knippertz, and Christian M. Grams

Data sets

EuLerian Identification of ascending AirStreams - ELIAS 2.0 Julian Quinting

ERA5 hourly data on pressure levels from 1940 to present H. Hersbach et al.

Tracks of negative upper-tropospheric PV anomalies (PVAs−) over the Northern Hemisphere in ERA5 reanalysis (1979-2021), published 11 April 2024 Seraphine Hauser et al.

Short summary
Blocking over Greenland has substantial impacts on the weather and climate in mid- and high latitudes. This study applies a quasi-Lagrangian thinking on the dynamics of Greenland blocking and reveals two pathways of anticyclonic anomalies linked to the block. Moist processes were found to play a dominant role in the formation and maintenance of blocking. This emphasizes the necessity of the correct representation of moist processes in weather and climate models to realistically depict blocking.