Description of the upgrade
A number of changes to the physical parametrization scheme were introduced:
- A modification in the treatment of the water vapour absorption in the long-wave part of the radiation scheme;
- A new method of moisture convergence closure;
- A new treatment in the ice fall-out in the cloud scheme.
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
Contents of this page
All IFS cycles
- Terminology for IFS testing
- Implementation of IFS Cycle 48r1
- Implementation of IFS Cycle 47r3
- Implementation of IFS Cycle 47r2
- Implementation of IFS Cycle 47r1
- Implementation of IFS cycle 46r1
- Implementation of IFS cycle 45r1
- Implementation of Seasonal Forecast SEAS5
- Implementation of IFS cycle 43r3
- Implementation of IFS Cycle 43r1
- Implementation of IFS cycle 41r2
- Introducing the octahedral reduced Gaussian grid
- Horizontal resolution increase
- Boundary-Condition Programme ENS at 06 and 18 UTC
- Implementation of IFS Cycle 41r1
- IFS cycle upgrades pre 2015