CMSAF TOA radiation status report

1
CM-SAF TOA radiation status report

• S. Dewitte
• Royal Meteorological Institute of Belgium

2
Overview

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

3
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.

4
Demonstration merging

• Daily mean TRS images for 2/3/2004.

5

• CERES

GERB
6

• CERESwith mask

GERBwith mask
7

• Merged

User product
8
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.

9
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.

10
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.

11
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

12
Conclusions

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