03-May-2007GIST 26: Abingdon GGSPS status Andy Smith RAL

03-May-2007GIST 26: Abingdon Outline Edition 1 release and reprocessing Operations: GERB-1 and 2 archive stats, problems Progress on new development Future work

03-May-2007GIST 26: Abingdon Reprocessing & release Status at last GIST meeting: L2 ARG June 2006 to present released L1.5 NANRG reprocessing proceeding slowly Concerns about QA effort and delay to release

03-May-2007GIST 26: Abingdon Reprocessing & release Reprocessing L reprocessing & QA completed Jan 07 Met new timescale agreed at last GIST Release of the L1.5 NANRG Oct 2005 to present released Jan : rolling release – needs L1.5 geo data from RMIB L2 reprocessing “Wash-up” tasks: re-order of missed L0 data for to give more complete Edition 2 data set

03-May-2007GIST 26: Abingdon Edition 1 data available All L1.5 data reprocessed: 2 years’ data available 18 months’ L2 ARG data available for download ProductAvailableRemaining L2 ARG28-Mar – June Oct-2005 – (today – 40d) Oct 04 – Oct 05 L15 NANRG 16-Feb – June Oct-2005 – (today – 40d) Oct 04 – Oct 05

03-May-2007GIST 26: Abingdon Special data sets Excluded from Ed01, available separately via GGSPS web pages L2 ARG Feb-March 2004 (clear-sky warm-up) L th Feb 2004 (pre TSOL jitter) Both above include Ernesto’s Feb 04 validation period Ops team only: L2 solar eclipses March, Sept 2006 L2 data affected by counting data (several periods)

Ops: G2 archive stats Mon% L0% L0 normal % L1.5 Ed01 Outages Oct MSG off 14.6%, sunblock 16%, nightly sun avoidance Nov Data corruption 6%, ROM, stray light Dec Counting data x2 Jan Counting data x2 Feb Sun avoidance, leased line, stray light Mar Data corruption 8.8%, sun avoidance, auto-sunblock x4, sunblock during corrupt. Apr Leased line x2 6.5%, RAL power, sun av, auto-sunblock x4

03-May-2007GIST 26: Abingdon Ed01 data coverage Reduced Ed01 data coverage: Mirror events: counting data (~1 day) Direct stray light close to midnight (hours) High % of corrupt/missed packets (hrs/days) Quartz Filter anomaly (1 or 2 products) Mirror pointing anomaly (1 product) Sensor swaps (1 product) Products picked up in QA are “pulled” from Edition 1 (GERB-1 products not pulled – no data released)

03-May-2007GIST 26: Abingdon Ops: G1 archive stats Mon% L0% L0 Norm % L1.5Outages Oct61.90-Data corrupt 36.2%, ROM 1.7% Nov96.70-ROM 2.3%, EUM maintenance Dec95.00-PGS Antenna 4.97% Jan Feb SAFE after 12-Feb, leased line 1.5% (re-ordered since) Mar99.30-PGS antenna 0.7% Apr RAL power, leased line x2 >5%

03-May-2007GIST 26: Abingdon Ops: problems Problems affecting L0 data and NRT processing: Satellite off & instrument data corruption PGS antenna, EUM maintenance RAL power & local network RAL-EUMETSAT leased line –high impact, only partially under our control: –can be intermittent, packet %ages don’t reflect number of affected products –move to SFTP over internet may solve this (and may introduce new problems)

03-May-2007GIST 26: Abingdon Operations GERB-2 catalogue database L0 table large, performance problems Created difficulties in processing backlogs of data after outages Tables split into current/historic to reduce impact Software: Corrupt data and intermittent line breaks revealed new data handling bugs

03-May-2007GIST 26: Abingdon New development Oct - April Oct – Feb: reprocessing Feb – Apr: ongoing Release & (dual) Ops work… Initial planning of Linux port, bid submitted Ported system needed for GERB-3, but funding constraints may require work completed much sooner SFTP of L0 data from EUMETSAT to RAL TSOL jitter data in GERB packet

03-May-2007GIST 26: Abingdon Future work SFTP of L0 data & TSOL jitter data in GERB packet – ~4 months to complete Linux port: ~1 staff year Possible L1.5 processing improvements: MB talk Further product releases: L2 BARG etc Level 2 Monthly Means