The ECMWF/GEO Workshop on Atmospheric Reanalyses was held from 19 to 22 June 2006.
Description
The workshop considered the status of and plans for global reanalysis in Europe, Japan and North America, and will identify the work needed to prepare for the new generation of multi-decadal global reanalyses to succeed ERA-40, JRA-25 and the NCEP reanalyses. Conclusions of recent workshops covering observational aspects (the ECMWF workshop on bias-correction of satellite data, and others held elsewhere) were reviewed, and specific consideration was given to complementary aspects of data-assimilation development and to key user requirements. The scope for coordination of international reanalysis activities was examined.
A discussion session covered the following topics:
- User needs for reanalysis
- Observation datasets and boundary forcing fields
- Homogenization of data
- Requirements for the data assimilation system
Programme
Presentations
| Monday 19 June | |
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Experience and plans of reanalysis centres |
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From ERA-15 to ERA-40 and ERA-Interim Sakari Uppala (ECMWF) |
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JRA-25 and plans Kazutoshi Onogi (JMA) |
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MERRA and activities for atmospheric reanalyses in the US Michele Rienecker (GMAO) |
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Status and needs for reanalysis: user views |
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Status and needs for reanalysis - the international context Kevin Trenberth (NCAR) |
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Validation of climate models Simon Tett (Met Office) |
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Dynamical-process studies Brian Hoskins (University of Reading) |
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Chemical transport modelling Beatriz Monge-Sanz (University of Leeds) |
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Land surface processes Christoph Schär (ETH) |
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| Tuesday 20 June | |
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An assessment of contemporary global reanalyses in the polar regions David Bromwich (BPRC) |
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Applications in mountain areas Eric Martin (Météo-France) |
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Ocean-model needs from re-analyses Michele Rienecker (GMAO) |
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Developments in data assimilation for reanalysis |
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Data assimilation requirements for climate reanalysis Lennart Bengtsson (ESSC) |
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Optimizing data assimilation for reanalysis Mike Fisher (ECMWF) |
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Accounting for model biases in data assimilation Yannick Trémolet (ECMWF) |
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Adaptive bias correction of radiances Dick Dee (ECMWF) |
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The hydrological cycle Per Kållberg (ECMWF/SMHI) |
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Surface and boundary layer schemes Anton Beljaars (ECMWF) |
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Land-surface data assimilation systems Pedro Viterbo (IM, Portugal) |
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Ocean wave analysis Jean Bidlot (ECMWF) |
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Capturing trends and low-frequency variations Adrian Simmons (ECMWF) |
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| Wednesday 21 June | |
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Ensemble Kalman Filter analysis, and its application to reanalysis using only surface-pressure observations Gil Compo (CDC) |
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Assimilating only surface-pressure observations in 3- and 4D-Var, and other observing-system impact studies Jean-Noël Thépaut (ECMWF) |
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Observations and boundary forcing fields |
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Observational requirements for future reanalyses Sakari Uppala (ECMWF) |
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Reprocessed satellite data products for assimilation and validation Leo van de Berg (EUMETSAT) |
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Development of SST and sea-ice datasets Philip Brohan (Met Office) |
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Homogenization of radiosonde data Leopold Haimberger (University of Vienna) |
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Homogenization of HIRS/SSU/VTPR radiances Mark McCarthy (Met Office) |
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Other aspects |
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The Climate Monitoring SAF Jörg Schulz (DWD) |
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The potential for EURRA, a European Regional Reanalysis Adrian Simmons (ECMWF) |
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Proceedings
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Developments in model physics after ERA-40 A Beljaars |
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The need for a dynamical Climate reanalysis L Bengtsson |
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Ocean wave analysis and use of surface wind observations over the oceans J-R Bidlot |
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Development of SST and sea-ice datasets P Brohan |
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An assessment of contemporary global reanalyses in the polar regions D H Bromwich |
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Ensemble Kalman Filter analysis, and its application to reanalysis using only surface- pressure observations G P Compo |
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Adaptive bias correction of radiance data D Dee |
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Optimizing data assimilation for re-analysis M Fisher |
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Bias correction of radiosonde observations L Haimberger |
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Dynamical-process studies using reanalysis data B Hoskins |
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The hydrological cycle in the pre-interim tests P Kallberg |
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Applications in mountain areas E Martin |
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Homogenization of IR sounders M McCarthy |
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Chemical transport modelling B M Monge-Sanz |
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JRA-25 and plans K Onogi |
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Air-sea fluxes: ocean-model needs from reanalyses M Rienecker |
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MERRA and US reanalysis plans and activities M Rienecker |
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Status and needs for reanalysis: Land-surface processes C Schaer |
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The Satellite Application Facility on Climate Monitoring (CM-SAF) J Schulz |
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The potential European Regional Reanalysis project (EURRA) A J Simmons |
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Capturing trends and low-frequency variations in reanalyses A J Simmons |
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Validation of climate models S Tett |
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Assimilating only surface-pressure observations in 3D and 4D-Var J-N Thepaut |
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Accounting for model biases in 4D-Var Y Tremolet |
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Observations and their analysis for WCRP/COPES K E Trenberth |
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Observational requirements for future reanalyses S Uppala |
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From ERA-15 to ERA-40 and ERA-Interim S Uppala |
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Reprocessed satellite data products for assimilation and validation L van de Berg |
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