Abstract: he role of warm conveyor belts (WCBs) and their associated positive low-level potential vorticity (PV) anomalies are investigated for extratropical cyclones in Northern Hemisphere winter, using ERA-Interim and composite ...

Abstract: his paper introduces a newly compiled set of feature-based climatologies identified from ERA-Interim reanalyses (1979?2014). Two categories of flow features are considered: (i) Eulerian climatologies of jet streams, ...