1. SCIAMACHY Processors Development
SCIAMACHY Validation Workshop
Bremen, 6-8th December 2004
Sander Slijkhuis

2. SCIAMACHY Processor Development Level 1b-2
Two processor lines
Instrument Processor Facility (IPF) NRT (Industrial Implementation)
Level 1b-2 Offline data processor
Current Status of Instrument Processor Facility NRT (IPF)
Verification of Version 5.01 in March 2004
Upgrade to Version 5.02 & 5.03 since of PDS technical reasons
Upgrade to Version 5.04: Usage of climatology information corrected (interpolation error)
All coming upgrades will be implemented into the Off-line data processor

3. SCIAMACHY Processor Development Level 1b-2
Current Status of SCIAMACHY Level 1b-2 Off-line Data processor
Factory Acceptance Test finalised in July 2004 for Version 2.0 (DLR internal version numbering)
Onsite Acceptance Test in D-PAC (which is beyond DLR-IMF scope) is in preparation and ongoing
Version 2.0 content is defined by
Nadir equivalent to IPF NRT 5.04
Limb UV/VIS retrieval equivalent to delivered prototype of SAO
Version 2.5 is currently most actual running version and will become operational asap:
Delta in Nadir algorithm:
Upgrade of cloud detection algorithm (Line-of-sight dependency of reflectance db removed)
Delta in Limb algorithm:
Change of set-up of covariance matrix for NO2 retrieval
Latitude dependent selection of retrieval layers

4. SCIAMACHY Processor Development Level 1b-2
Prepared coming version of Off-line data processor (Next Verification Campaign)
Algorithm Delta:
Nadir UV/VIS
O3 retrieval: Upgrade to GDP 3.0 (implemented)
Usage of different solar reference spectra (ASM & ESM, cal. & un-cal.)
Upgrade of reference spectra database
Upgrade of application settings for O3, NO2, BrO, OClO, and SO2 (as proposed in PCR)
Usage of US standard climatology for NO2 retrieval
(Spatial aliasing, depending on verification date)
Nadir IR
Upgrade of application settings and Bad&Dead Pixel Mask
Currently: Test retrievals with simultaneous fit of ILS showed improvements for selected scenes. Implementation into data processor will then allow to take into account some of the current show stoppers.
Limb UV/VIS
Revision of retrieval scheme and removal of some detected inconsistencies

5. SCIAMACHY Processor Development Level 1b-2
Near future Version (Planned for Mid 2005)
Algorithm Delta
Nadir UV/VIS
Upgrade to GDP Version 4.0
Inclusion of water vapour retrieval of IFE Bremen
Inclusion of cloud-top pressure/height algorithm
Limb UV/VIS
Extension to further products

6. SCIAMACHY Processors Development
All users are invited for suggestion to processor changes.
The agencies (ESA, DLR, and NIVR) implemented a change request procedure where SSAG and all entities which are needed for implementation (IECF, key data, data processor) take part of it.
For more information about the PCR procedure, contact DLR agency in Bonn