Experimentally /operationally produced by National Meteorological Services.
The lightning density is the number of lightning strokes or flashes per chosen spatial area (e.g. km²) and time interval (e.g. min). It can be derived using measurements from ground-based lightning location networks or lightning imagers/mappers onboard meteoro-logical satellites.
Typically total lightning (intra-cloud and cloud-to-ground lightning) is considered.
The lightning activity of a convective storm is linked to the updraft strength. Thus monitoring lightning characteristics of convective storms help to assess storm intensity and potential severity. Lightning jumps, i.e. a rapid increase in lightning rate, have shown to be a precursor of reported severe weather in many cases.
✓ Useful for monitoring of storm severity
✓ Available during night and day
✓ Applicable to any lightning location network or lightning mapper / imager.
✓ Easy to configure spatial and temporal resolution dependent on application
X Depends on detection efficiency of used lightning location network or lightning mapper / imager.
Accessibility and Dissemination:
Mostly on national level, typically for their internal use only.
Lightning density products will come available for the new Lightning Imager on board MTG via NWCSAF.
Prepared by K. Wapler, DWD, 2018.