Description of the upgrade
Cycle 31r2 is a consolidation cycle. This cycle introduces the assimilation of new satellite data: winds from MTSAT (Japanese GEO satellite), and GPS radio occultation data from CHAMP, GRACE and COSMIC.
Datasets affected
Resolution
Unchanged
Horizontal | Vertical |
---|
Atmospheric (unchanged) Wave (unchanged) - HRES: 0.36 degrees
- ENS: 0.5 degrees
- LAW: 0.1 degrees
|
Atmospheric (unchanged)
|
Meteorological content
- passive monitoring of new data
Meteorological impact
- small impact in the troposphere
- significant positive impact for lower stratospheric temperature analyses and forecasts
Technical content
- introduction the use of new satellite data
- GPS radio occultation data from CHAMP, GRACE and COSMIC.
- changes are related to the data representation of ENS fields in the MARS archive.
- Ensemble mean and standard deviation fields are archived in MARS with 16 bit accuracy
- Probability forecast fields are stored in MARS with 8 bit accuracy
Model ID and experiment number
- Atmospheric: 128
- Ocean wave: 116
E-suite experiment number = 0032
Resources
ECMWF Newsletter: See Newsletter 110