# Presentation: 658336

## 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
- 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.

- Sept 2, 1994

- GOES-8

## 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

## 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

## 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

## 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

## Start Up ActivityJanuary 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

## 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

## 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

## 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

**Notes:**
Prior AWIPS testing done with live and taped data

AWIPS Versions:
5.1.2 (retired) , 5.2.1 (current),  5.2.2 (Sept-Nov ’02), OB1 (Feb-March ’03)

## 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

**Notes:**
Sea Surface Temperature capability implemented 10/10/02
Upgraded Science from ODA expected Nov 1, ’02
Current GOES-12 ‘patch’:
 Ignore Channel 5 = Degraded Product
New enhanced GOES-SSTs Algorithm (GOES-8/10)
Updated Science and Validated
In operations in October
CIMSS – Cooperative Institute for Meteorological Satellite Studies

CSB, currently experimental (10/28/02) but will be ops, and will be coded by end of Oct....

## GOES 8 to 12 Transition

- G12 Station Δ, ~0.40 deg/day (~75 days)

- G12 Return
- To On-Orbit
- Mode
- 1/9/03

- Provide
- GVAR
- For Test
- 1/24/03

- Swap
- GOES 8
- GVAR
- With GOES 12
- 3/31/03

- GOES 12
- Reaches  75W
- 4/22/03

- SXI
- Turn
- On
- 1/21/03

- Delivery of  Winds & Radiances
- Products by 02/14/03

- All GOES-12 Products Tested and Validated 03/07/03

- Additional AWIPS Testing

- All GOES - East  Products Produced from GOES-12  03/31/03

- Comm
- Services
- Switched
- To GOES-12
- 4/22/03

## For more information:

**GOES-8 to GOES-12 Transition Plan**
**http://www.oso.noaa.gov/goes/index.htm**