Gene LeggOffice of Satellite Data Processing and

Distribution

Asia Pacific Satellite Data Exchange and Utilization Meeting

Honolulu, HI, September 20-22, 2006

Overview of the Current NOAA/GOES PROGRAM

2

GOES EAST

• GOES-12 at 75W (July 23, 2001)– Instrument Status

• Imager and Sounder- Green (operational)• SEM – YellowYellow (limited ops) EPS (Energetic Particle Sensor)

anomaly (noise in channels P6 and P7 (10/28/03)• SXI (Solar X-Ray Imager) – Orange (degraded) Entrance

Filter failure(11/03) – Subsystem Status

• AOCS – Green• Thermal Control – Green• Electrical Power – Green• Telemetry/Command/Communications – Green• Mechanical - Green• Propulsion - Green

3

GOES WEST

• GOES-11 at 135W (May 3, 2000)– Instrument Status

• Imager and Sounder- Green (operational)• SEM – Green• SXI (Solar X-Ray Imager) – Not Flown

– Subsystem Status• AOCS – Green• Thermal Control – Green• Electrical Power – Green• Telemetry/Command – Green• Communications – YellowYellow; Sensor Data Transmitter A: Not

Functional• Mechanical – Green• Propulsion - Green

4

GOES CENTRAL

• GOES-10 drifting to 60W (~107W) (April 25, 1997)– Instrument Status

• Imager and Sounder- Green (operational)• SEM – YellowYellow; EPS channels P6, P7 noisy• SXI (Solar X-Ray Imager) – Not Flown

– Subsystem Status• AOCS – Green• Thermal Control – Green• Electrical Power – Green• Telemetry/Command – Green• Communications – YellowYellow; Sensor Data Transmitter A: Not

Functional• Mechanical – YellowYellow; Solar Array runs in reverse direction• Propulsion - Green

5

GOES Launch Planning

Spacecraft

Availability

Date

Planning Launch

Date GOES-O Sept 2007 April 2008 GOES-P April 2008 October 2009 GOES-Q Cancelled

(2002) N/A

GOES-R Sept 2012 Sept 2012 GOES-S April 2014 April 2014

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GOES-N Post Launch

• Launched May 24, 2006– 18 days orbit raising,

deployments– 6 days S/C subsystem start up

• Normal on-orbit Mode: now GOES-13

– Currently undergoing PLT by NASA

– Instrument Startup/Cal– Cooler Cover Deployment (L+45

days)

• Transition to Storage Mode – Dec. 2006

– L+6 months– Handover to NOAA

7

GOES-13 Changes

• Imaging/Sounding Through Eclipse– Larger Batteries

• Star Trackers as Primary Attitude Reference– Improved Navigation Performance– 2KM Pointing Accuracy (vs 4/6km today)– Faster Recovery after Maneuvers

• Elimination of Solar Sail Results in Cooler IR Detectors

• WEFAX Becomes LRIT• EMWIN

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WEFAX/LRIT Differences

GOES I-M GOES N-P----------------------------------------------------------------------------------------

Name WEFAX LRIT

Signal Analog Digital

Center Frequency 1691.000 MHz 1691.000 MHz Protocol N/A CCSDS

Data Rate N/A 64/128 Kbps

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EMWIN Differences

GOES I-M GOES N-P----------------------------------------------------------------------------------------

Center Frequency 1690.725 MHz 1693.500MHz

Modulation FSK BPSK

Coding None Forward Error Correcting

Power Exceeds ITU Within ITU limits (but reduced)

Data Rate 9.6 Kbps 9.6 Kbps

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GOES-R Changes

• Advanced Baseline Imager (ABI)

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The Advanced Baseline Imager

ABI CurrentSpatial resolution

Visible (0.64 mm) 0.5 km Approx. 1 kmAll other bands 2 km Approx. 4 km

Spatial coverageFull disk 4 per hour Every 3 hoursCONUS 12 per hour ~4 per hour

Operation during eclipseYes No

Spectral Coverage8-12 bands 5 bands

ABI - Benefits from Additional Channels

– 8.5: • More accurate and consistent delineation of ice from water

cloud both day and night• Thin Ci can be detected in conjunction with 11• SST estimates will be improved by better atmospheric

corrections in relatively dry atmospheres – 10.35:

• Cloud particle size & cloud liquid water content both day and night

• Improved low level moisture determination (with 11.2 & 12.3 channels

– 13.3: • Improved determination of cloud height and opacity

– Improved satellite derived winds

ABI - Benefits from Additional Channels

– 1.61:• Improved ability to distinguish cloud from snow

and ice cloud from water cloud (daytime only) – 7.0:

• Better depiction of mid-tropospheric flow– Improved moisture drift winds

– 1.375: • Daytime thin cirrus detection

– 0.86:• Aerosols, ocean observation, vegetation