Project Final Reports

This section contains the final reports of the past HIRLAM projects.

Documents

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Final Report of the HIRLAM 4 Project, 1997-1999. Final Report of the HIRLAM 4 Project, 1997-1999.

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HIRLAM 4 Final Report

Authors:
Peter Lynch, Project Leader
Nils Gustafsson, Deputy Manager, Assimilation
Bent Hansen Sass, Deputy Manager, Modelling
Gerard Cats, System Manager

Table of Contents
Chapter 1. Introduction gives an overall view of the Project, and a summary of its
achievements.
Chapter 2: Data Assimilation and Data is a Report on Analysis by Nils Gustafsson.
Chapter 3: Model Developments is a Report on Modelling by Bent Hansen Sass.
Chapter 4: System and Embedding is a Report on System and Embedding by Gerard Cats.

Annex 1 contains a list of HIRLAM 4 Meetings.
Annex 2 is a selected list of Exchange Visits during the Project.
Annex 3 is a list of HIRLAM and related Publications.

Final Report of the HIRLAM 5 Project, September 2003 Final Report of the HIRLAM 5 Project, September 2003

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HIRLAM 5 Final Report

Authors

Per Unden , Heikki Jarvinen , Ernesto Rodriguez and Gerard Cats

Contents
1 Introduction and Executive Summary 6
1.1 Organisation during the Project 6
1.2 Summary of the Data assimilation and observational usage 6
1.3 Summary of the Modelling work 7
1.4 Summary of the Embedding work 9
1.5 Operational HIRLAM progress in the member institutes 10
2 Data Assimilation 11
2.1 Three-dimensional variational data assimilation (3D-VAR) 15
2.2 Four-dimensional variational data assimilation (4D-VAR) 18
2.3 Continuing maintenance of the Optimum Interpolation (0I) analysis 19
2.4 Surface analysis 20
2.5 Assimilation of remote sensing data 21
2.5.1 ERS, SeaWinds and ASCAT scatterometer data 21
2.5.2 (A)TOVS sounding data 23
2.5.3 Global Positioning System (GPS) data 25
2.5.4 Ground based radar data, profilers and SODAR
2.5.5 Ancillary satellite data 28
3 Modelling 29
3.1 Physics 29
3.1.1 Turbulence 29
3.1.2 Surface Processes 30
3.1.3 Clouds and Condensatio n 31
3.1.4 Radiation 33
3.1.5 Mountain waves, orography and Gravity Wave Drag 33
3.1.6 ECMWF Physics Package 34
3.2 Numerics 34
3.2.1 Time-integration Methods 35
3.2.2 Lateral and Upper Boundary Conditions 36
3.2.3 Non-Hydrostatic Equations 37
3.2.4 Boundary Filters for Initialisation and Launching 38
3.2.5 Digital Filters for Initialisation 39
3.2.6 Spectral Formulation 39
3.2.7 Forecast Reliability 39
4 System, Embedding and Validation 41
4.1 General System Activities 41
4.2 Physiography 42
4.3 Enhancement of Efficiency of the Reference System 42
4.4 Delayed Mode Runs and validation of Reference system 43
4.5 Overhaul of system and re-coding of code and scripts
4.6 Observation Pre-processing and Quality Control 44
4.7 Model Post-processing and Verification 45
4.8 HeXnet maintenance 45
4.9 Documentation 45

Appendices

A Organisational Hirlam-5 Meetings 46
B Workshops and other scientific Hirlam-5 Meetings 48
C Hirlam Scientific Visits 49
C.1 Extended visits (longer than 2 weeks) 49
C.2 Shorter visits 49
C.3 External presentations 50
D List of Hirlam-5 Staff 53
E Reference System and major beta releases 55
F Publications 55
F.1 HIRLAM Newsletters 55
F.2 HIRLAM Workshop Proceedings and other Reports 56
F.3 HIRLAM Technical Reports, 2000-2002 56
F.4 Publications by HIRLAM-5 Staff (and invited speakers at HIRLAM Workshops) 57
F.5 Other References

Final Report of the HIRLAM 1 project (HIRLAM Technical Report No. 05) Final Report of the HIRLAM 1 project (HIRLAM Technical Report No. 05)

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By Bennert Machenhauer

December 1988

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

 

HIRLAM-B Review September 2016 HIRLAM-B Review September 2016

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Review HiRLAM B programma