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Description of the upgrade

A number of changes to the physical parametrization scheme were introduced:
  1. A modification in the treatment of the water vapour absorption in the long-wave part of the radiation scheme;
  2. A new method of moisture convergence closure;
  3. A new treatment in the ice fall-out in the cloud scheme.

Note

Implemented: 16 December 1997  

Resources

ECMWF Newsletter: Please see "Introduction of revised parametrizations of physical processes into the IFS" in the ECMWF Newsletter No.79

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