Details for Final Report of the HIRLAM 2 project (HIRLAM Technical Report No. 09)

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Name:Final Report of the HIRLAM 2 project (HIRLAM Technical Report No. 09)
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Nils Gustafsson

March 1993

Contents

1. INTRODUCTI0N p.2
2. IMPROVEMENTS OF THE LEVEL 1 SYSTEM DURING THE HIRLAM 2 PROJECT p.6
2.1 Continued removal of software errors p.6
2.2 Improved analysis scheme p.7
2.3 A workshop to study the performance of the Level 1 physics p.8
2.4 The HIRLAM system under Unix; a unified script system 11
3. OPERATIONAL EXPERIENCES OF THE HIRLAM LEVEL 1 SYSTEM p.13
3.1 FMI p.13
3.2 DMI p.24
3.3 Subjective evaluation of operational HIRLAM forecasts at SMHI p.28
4. THE HIRLAM LEVEL 2 DATA ASSIMILATION AND FORECASTING SYSTEM p.30
4.1 The reference HIRLAM Level 2 data assimilation and forecasting system p.30
4.2 Optional HIRLAM 2 forecasting system modules p.41
5. EVALUATION OF THE HIRLAM LEVEL 2 SYSTEM p.42
5.1 Parallel tests with Eulerian and semi-Lagrangian HIRLAM models and comparison with the Norwegian LAM system p.43
5.2 Parallel forecast experiments to test the effects using a longer time-step for the physics than for the dynamics calculations p.56
5.3 Parallel data assimilation and forecast experiments to evaluate the "Sundqvist"
condensation scheme p.58
5.4 Evaluation of HIRLAM Level 2 pre-operational nms at SMHI p.65
6. HIRLAM 2 RESEARCH ACTIVITIES p.67
6.1 Model Dynamics and Numerical Techniques p.67
6.2 Physical parameterization schemes p.78
6.3 Initialization schemes p.86
6.4 Data assimilation techniques p.88
6.5 Observations and Observing system experiments p.90
6.6 Development of an experimental mesoscale system p.94
7. VARIOUS OTHER HIRLAM 2 ACTIVITIES p.109
7.1 The ECMWF 00 UTC optional project p.109
7.2 Cooperation and exchange of software p.109
7.3 Presentations at international meetings. seminars and workshops p.110
7.4 The HIRLAM Mesoscale Modelling Workshop p.110
8. CONCLUDING REMARKS p.111
APPENDIX 1: Calendar of events p.113
APPENDIX 2: List of publications during HIRLAM 2 p.116
APPENDIX 3: Presentations about HIRLAM p.120
REFERENCES p.122

 

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