GEMS Global Production System and Data Infrastructure (PRO sub-project)

1. GEMS Global Production System and Data Infrastructure (PRO sub-project) Sub-project manager: Adrian Simmons Sub-project partner: ECMWF

2. Objectives of PRO sub-project • Develop global assimilation systems for greenhouse gases, reactive gases and aerosols (Year 1 …) • Acquire, pre-process and monitor observations (Year 1 …) • Develop web/verification infrastructure (Year 1 …) • Produce trial analyses for greenhouse gases, reactive gases and aerosols (Year 2 …) • Unify refined versions of assimilation systems into integrated GEMS assimilation system (Year 3) • Produce extended analyses and daily forecasts (Year 3 …) • Prepare for operational implementation, including real-time forecasts to support RAQ (Year 4)

3. WP_PRO_1 GHG assimilation system & reanalysis GHG sub-project WP_PRO_5 Technical observation processing WP_PRO_2 AER assimilation system & reanalysis WP_PRO_4 CTM interfaces & technical support AER sub-project WP_PRO_6 Web interface & verification tools RAQ sub-project WP_PRO_3 GRG assimilation system &reanalysis GRG sub-project Components of the PRO sub-project

4. WP_PRO_1 GHG assimilation system & reanalysis GHG sub-project WP_PRO_5 Technical observation processing WP_PRO_2 AER assimilation system & reanalysis WP_PRO_4 CTM interfaces & technical support AER sub-project WP_PRO_6 Web interface & verification tools RAQ sub-project WP_PRO_3 GRG assimilation system &reanalysis GRG sub-project Components of the PRO sub-project Soumia Serrar Richard Engelen Martin Suttie Jean-Jacques Morcrette + ? Claes Larsson Angela Benedetti Miha Razinger Antje Dethof Johannes Flemming

5. April GHG assimilation system & reanalysis • Head-start from FP5 COCO project • Have generalized model code for new GEMS variables – common to GHG, GRG and AER • Implemented surface fluxes of CO2 • Have run two-month Radon forecast • Generalising code for background-error constraint Jb – common to GHG, GRG and AER

6. GRG assimilation system & reanalysis • Head-start on O3 from operations and ERA-40 • Have generalized model code for new GEMS variables • Started to address CTM coupling • Generalising code for background-error constraint Jb • Have extended observation processing routines to include other GRG (NO2, SO2, CO, CH2O) variables • First copy O3 observation operators. Later use averaging kernels. SBUV and SCIAMACHY O3 retrievals assimilated

7. AER assimilation system & reanalysis • Have generalized model code for new GEMS variables • Are implementing specific aerosol parametrizations • Generalising code for background-error constraint Jb • Have introduced aerosol total optical depth as new observed variable • Have run aerosol forecasts from climatological initial data and derived error statistics from “NMC method” • Activity to be coordinated with Task 3 of AER sub-project

8. Technical observation processing • Discussed “generalised BUFR definition” • Updated Envisat-PDS to BUFR software • Reviewed data availability • Extracted sample MODIS aerosol, SCIAMACHY NO2 and MOPITT CO data (all in HDF) • Next: • Set up BUFR definitions, starting with sample datasets • Develop HDF-to-BUFR converter • Maintain data-availability spreadsheet

9. Web interface & verification tools • Last task to start • Basic prototype for plot display has been set up • Claude Gibert will discuss capabilities and access mechanisms in Technical Session 3 • Strong interaction with RAQ project; plan for verification needs developing