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SCIAMACHY Processors Development

This workshop discusses the current status and future upgrades of the SCIAMACHY Processor Development, including the verification of previous versions and upcoming improvements in data processing algorithms. Users are invited to suggest changes and can contact DLR agency for more information.

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SCIAMACHY Processors Development

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  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 Christian.Chlebek@dlr.de

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