Definition of MET elements in eGAFOR

Based on user surveys conducted in all countries of the Project in December 2017 and January 2018 and expert discussions at several meetings, the partners have agreed that following meteorological phenomena (MET elements) shall be forecast in eGAFOR:

MET element Acronym Explanation
Low BKN/OVC clouds LC Low cloudiness coverage more than 4/8
Visibility VIS Horizontal visibility on ground level below 8 km
Cumulonimbus clouds CB Horizontal  distribution of CB clouds
Turbulence TURB Turbulence in Low Level Flight altitudes
Freezing precipitation FZ PP Any precipitation which freezes on contact with surfaces