CM-SAF Board Meeting , Zurich, 13-15/9/2004

CM-SAF TOA radiation status report

S. Dewitte

Royal Meteorological Institute of Belgium

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Overview

Changes to processing system Status input products: GERB/SEVIRI Status input products: CERES

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Changes visible to users

Change from lat-lon to sinusoidal grid.– Changes spatial averaging for GERB, now high

resolution SHI is used as input instead of low resolution BARG.

New hdf output format.

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Demonstration merging

Daily mean TRS images for 2/3/2004.

CM-SAF Board Meeting , Zurich, 13-15/9/2004

CERES

GERB

CM-SAF Board Meeting , Zurich, 13-15/9/2004

CERESwith mask

GERBwith mask

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Merged

User product

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Internal changes

New directory structure– Better separation source code/data– Organised per month and per software version– Input, output, intermediate data and source

code are archived for traceability and possibility for reprocessing

More extensive logging– ‘Log summary tool’ may be needed.

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Status input products: GERB/SEVIRI

Currently used as input in order of priority: – GERB (not released)

– GERB-like from SEVIRI data

Product file contains the list of input files that were actually used.

No more correction of the GERB/SEVIRI data in the CM-SAF software, will be done in near-real time GERB Processing.

CM-SAF Board Meeting , Zurich, 13-15/9/2004

GERB status

Planned release: December 2004. Planned reprocessing: first half 2005. Known data quality problems:

– Spectral response (affects TRS)– Correction of TET for cold clouds.– Not yet investigated: TRS near sun glint region.

Instrument stopped measuring end of July 2004, should restart this week.

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Status input products: CERES

Currently used: ES9, Terra, FM1, Edition 1– Available up to June 2004

– Waiting for July 2004 for next month ‘dress rehearsal’

Better: ES9, Terra/FM1 + Aqua/FM3, Edition 2– Available up to Dec 2003

More advanced: SRBAVG– Better angular models, better spatial resolution

– Currently only available for TRMM up to 2000

CM-SAF Board Meeting , Zurich, 13-15/9/2004

Conclusions

Ready for dress rehearsal next month. GERB data release planned for December 2004. Possibility for reprocessing.