Description of the upgrade
The list of important changes introduced on this occasion includes:
- a new coupling of the physics with the dynamics;
- a new optimal interpolation analysis of soil moisture and temperature, using the analysis of screen-level temperature and humidity introduced in March;
- US profilers and dropsonde data are used; radiosonde temperatures are bias corrected using information carried out in the TEMP message; ship winds are assigned to a height consistent with the information reported in WMO tables; ship humidity data are blacklisted;
- waves slope and wind stress formulations are improved in the oceanic wave package
Implemented: 13 July 1999
Resolution
Unchanged
Resources
ECMWF Newsletter: An article "A revised land-surface analysis scheme in the Integrated Forecasting System" from the ECMWF Newsletter No.88
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