GOES8 to GOES12 Transition

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

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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

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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
GOES 8 to 12 Transition
G12 Station ?, 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
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For more information GOES-8 to GOES-12
Transition Plan http//www.oso.noaa.gov/goes/index
.htm