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

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

5. 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
April

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