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GOES-8 to GOES-12 Transition

GOES-8 to GOES-12 Transition. Direct Readout Conference Cindy Hampton NESDIS/Office of Satellite Operations. Agenda. Background Operational Transition Requirements Schedule Start Up Activity Product Transition Issues and Concerns. Background. GOES-8 Launched April 13, 1994

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GOES-8 to GOES-12 Transition

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  1. GOES-8 to GOES-12 Transition Direct Readout Conference Cindy Hampton NESDIS/Office of Satellite Operations

  2. Agenda • Background • Operational Transition Requirements • Schedule • Start Up Activity • Product Transition • Issues and Concerns

  3. Background • GOES-8 Launched April 13, 1994 • GOES-8 Last Inclination maneuver: December 2002 • Partial maneuver due to amount of fuel remaining • Inclination requirement exceeded in April 2003: + 0.5 degrees • GOES-12 launched in July 2001 and currently in storage mode at 105W. GOES-8 Sept 2, 1994

  4. Operational Transition Requirements • Minimal impact to users: no requirement to re-point GVAR antennas • Provide sufficient testing period to evaluate GOES-12 performance by OSDPD, OSO and users • Maintain continuous GOES-12 GVAR once has returned to normal on-orbit mode. • A single switch for users from GOES-8 to GOES-12 GVAR • Minimize RF interference during transition

  5. SOCC Schedule • Return GOES-12 to On-orbit mode: January 9 • Perform GOES-12 yearly north-south maneuver: January 14 • Start GOES-12 Eastward Drift from ~110W towards 75W (~0.4 deg per day): January 17 • Turn on Solar X-Ray Imager (SXI) High Voltage Power Supply and begin Imaging: January 21 • Perform Image Navigation and Registration (INR) Recovery: January 20-24 • Provide GVAR for user testing during drift: January 24-March 31

  6. SOCC Schedule • GOES-12 reaches ~ 81W: March 31 • Perform swap of GOES-12 GVAR data for GOES-8 as GOES-East using GOES-8 GVAR transponder. • GOES-8 data would be available as backup via a ground patch. • Continue GOES-8 – normal housekeeping schedule • GOES-12/GOES-8 Cross Over: April 20

  7. SOCC Schedule • Stop GOES-12 drift at 74.5W: April 22 • Communication Services switch over (e.g. WEFAX, EMWIN, DCS, SARSAT) • Start GOES-8 westward drift maneuver towards 105W: April 24 • GOES-12 Imagery outage for ~2 hours due to RF command interference. GOES –10 Full Disk

  8. Start Up ActivityJanuary 9-24 • Scan Mirror Contamination Avoidance • Outgassing if required • Radiometric Calibration with ORA • INR Start up • SXI High Voltage Turn On • Scanning with sun by slewing solar array

  9. GOES-12 Product Testing • Products previously tested during NOAA Science Test Held from September 23, 2001 through October 27, 2001 • Change in imager resolution and spectral bands resulted in more extensive product implementation and testing • 4km Channel 5 (12.0 µm) replaced with 8km Channel 6 (13.3 µm) • Resolution on Channel 3 (6.7 µm) improved from 8km to 4km • GOES-12 data continued through December 16, 2001 • Data ingested and products created and tested in conjunction with ORA (Office of Research and Applications) • GOES-12 placed in storage December 20, 2001

  10. Ingest Capability – Prior to 03/31/03 • Imager and sounder data to be made available • NESDIS – SSD, ORA • NWS – NCEPs, N-AWIPS, AWIPS (test bed) • External users will be able to access GVAR data directly from GOES-12 prior to March 31, 2003 • NCEP - AWC, TPC via own antennas • Private companies – i.e. WSI, AccuWeather • Other Direct Readout Customers

  11. Product Readiness • Primary NWS Usage – AWIPS • AWIPS Readiness • Successful stream testing during NOAA Science Test with NWS Test Network Control Facility (TNCF – McLean, VA) • All AWIPS builds can handle GOES-12 Changes • Plans for additional final testing during move of GOES-12 prior to March 31, 2003

  12. Product Readiness • GOES Products Ready Include: • Winds, Radiances, Imager and Sounder ASOS SCP (Automated Surface Observing System Satellite Cloud Product), AutoEstimator, Sounder DPI (Derived Product Imagery), Remapped Imagery: AWIPS, N-AWIPS and McIDAS (Man computer Interactive Data Access System), WEFAX / LRIT, SST (Sea Surface Temperature), CSBT (Clear Sky Brightness Temperature, experimental) • GOES Products Discontinued Due to Band 5 to 6 Changes: • Imager DPI, and some volcano products • All used internally within SSD. Replacement products available • GOES Products Planned Readiness: • GSIP (GOES Solar Insulation Product) code by Dec from ORA • ABBA (Advanced Biomass Burning Algorithm) code by Dec from CIMSS

  13. Eclipse Season GOES 8 Drift to 105W Jan Feb Mar Apr May Jun GOES 8 to 12 Transition G12 Station Δ, ~0.40 deg/day (~75 days) SXI Turn On 1/21/03 Swap GOES 8 GVAR With GOES 12 3/31/03 G12 Return To On-Orbit Mode 1/9/03 Provide GVAR For Test 1/24/03 GOES 12 Reaches 75W 4/22/03 Delivery of Winds & Radiances Products by 02/14/03 All GOES-12 Products Tested and Validated 03/07/03 All GOES - East Products Produced from GOES-12 03/31/03 Comm Services Switched To GOES-12 4/22/03 Additional AWIPS Testing

  14. For more information: GOES-8 to GOES-12 Transition Plan http://www.oso.noaa.gov/goes/index.htm

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