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Convective Precipitation
Considerations regarding model convective precipitation
In the current configuration of the convection scheme any showers that are developed are considered to remain within the model grid box column, with precipitation, of whatever type, always falling vertically downwards. These and other aspects have consequences when forecasting shower activity.
In particular users should be aware of:
- The IFS currently shows:
- a bias towards:
- insufficient convective precipitation in arid regions (e.g. parts of West Africa, the Middle East, and central Australia).
- excessive convective rainfall near orography.
- a bias towards:
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Hail is not considered nor developed in the atmospheric model convection scheme, no matter how unstable is the model atmosphere. Only rain or snow is produced by the precipitation scheme.
Additional Sources of Information
(Note: In older material there may be references to issues that have subsequently been addressed)
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