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Implemented: 03 June 2008 |
Datasets affected
- ENS
- Limited wave model area
Resolution
LAW
Horizontal | Vertical |
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Atmospheric (unchanged)
Wave
| Atmospheric (unchanged)
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Meteorological content
- Improved moist physics in tangent linear/ adjoint model used in 4D- Var assimilation.
- Re-tuned entrainment in convection scheme.
- Bug fix to scaling of freezing term in convection scheme.
- Additional shear term in diffusion coefficient of vertical diffusion.
- Increased turbulent orographic form drag.
- Fix for soil temperature analysis in areas with 100% snow cover.
- Change in surface roughness for momentum, and change in post-processing of two-metre temperature and specific humidity.
- Assimilation of AMSR-E and TMI radiances in 1D+4D-Var; assimilation OMI ozone data.
- Usage of all four wind solutions for QuikSCAT in assimilation, rather than only two previously.
- Extended coverage and increased resolution for the limited area wave model.
- Improved shallow water physics and modified advection scheme for ocean wave models.
- Introduction of two new wave model parameters: maximum wave height and corresponding wave period.
Evaluation
- modest but significant positive impact on northern hemisphere and European scores in the troposphere
- similar results were obtained for three weeks of ENS testing
Technical content
Model ID and experiment number
- Atmospheric: 132
- Ocean wave: 117
- Limited-area ocean wave: 217
E-suite experiment number = 0037
Resources
ECMWF Newsletter: See Newsletter 116
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