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

WP_PRO_4

CTM interfaces &

technical support

WP_PRO_6

Web interface & verification

tools

WP_PRO_5

Technical observation processing

GHG sub-project

AER sub-project

GRG sub-project

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

WP_PRO_4

CTM interfaces &

technical support

WP_PRO_6

Web interface & verification

tools

WP_PRO_5

Technical observation processing

GHG sub-project

AER sub-project

GRG sub-project

RAQ sub-project

Antje Dethof

Claes Larsson

Johannes Flemming

Jean-Jacques Morcrette + ?

Soumia Serrar

Miha Razinger

Martin Suttie

Angela Benedetti

Richard Engelen

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

60°S60°S

30°S 30°S

0°0°

30°N 30°N

60°N60°N

150°W

150°W 120°W

120°W 90°W

90°W 60°W

60°W 30°W

30°W 0°

0° 30°E

30°E 60°E

60°E 90°E

90°E 120°E

120°E 150°E

150°E

Monday 1 January 2001 12UTC ECMWF Forecast t+120 VT: Saturday 6 January 2001 12UTC 1000hPa **

0.0010.005 0.01 0.02 0.03 0.05 0.075 0.1 0.15 0.2 0.5 1

-1.0 -0.6 -0.2 0.2 0.6 1.0Correlations on Aerosol Mixing Ratio

1000

800

600

400

200P

ressu

re le

vel

GlobalTropicsExtra-tropics NHExtra-tropics SH

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

Start End Web FTP Comments

ESA ENVISAT SCIAMACHYUniv. of Bremen

CH4 vertical column ASCII 2002 Present

http://www.iup.physik.uni-bremen.de/sciamachy/NIR_NADIR_WFM_DOAS/wfmd_products_download.html

Needs e-mail detailing use of data

ESA ENVISAT SCIAMACHY ESAO3 vertical column 2.5 BUFR

http://envisat.esa.int/instruments/sciamachy/data-app/dataprod.html

ftp://ftp-ops.pdk.envisat.esa.int and ftp://ftp-ops.pde.envisat.esa.int

14/12/2002 to present

ESA ENVISAT SCIAMACHY KNMIO3 vertical column 11.0 ASCII

http://www.temis.nl/protocols/O3total.html

ftp://ftppro.knmi.nl/data/o3scia

31/01/2004 to present

ESA ENVISAT SCIAMACHY KNMI

NO2 vertical column 25.0 HDF 01/01/2003 Present

http://www.temis.nl/airpollution/no2col/no2col.php Unknown

ESA ENVISAT SCIAMACHY BIRA-IASB

SO2 vertical column

http://www.temis.nl/airpollution/so2.html

Only maps. Cannot find Level 2 data.

ESA ENVISAT SCIAMACHY CH2ORemoved from TEMIS

Data in ECFS

Data access

Agency Mission InstrumentSpecies

for GEMS

Estimated data

volume

Data time frameProcessing

CentreData

format

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