GIFTS The Precursor Geostationary Satellite Component of a Future Earth Observing System W' Smith1,

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GIFTS - The Precursor Geostationary Satellite
Component of a Future Earth Observing SystemW.
Smith1, H. Revercomb2, G. Bingham3, F. Harrison1,
P. Regeon4, R. Petersen5, and J. Dodge11NASA,
2UW, 3USU,4 Navy, 5NOAA An Earth Science Vision
Technology Pathways And Challenges For 20252002
IEEE International Geoscience and Remote Sensing
Symposium (23-28 June, Toronto CA)
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A 20/20 Vision (Weather in Our Palm)
By the year 2020, mankind will have the
technology (observations and models) to digitize
the earths surface and its atmosphere with a
resolution of 1 km and 1 minute And Every
individual on earth will have personal and
timely access to weather observations and
accurate weather forecasts through a palm
computer/display unit.
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Vision Requirements
Sensor/Communications/Computational Web

• Global continuous earth observing system
• Computer system capable of continuous
  real-time 4-d assimilation of global data to
  create a Digital Earth
• Accurate model of the Earth system
• Global real-time data/information delivery
  system
• Personal (i.e., hand held) data access and
  display system

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ESE Vision Sensor Web

• Low Earth Orbiting
• Global coverage
• High spatial resolution
• Microwave sounding
• GPS density profiles
• LIDAR for winds, H2O, O3, CO2

• Geostationary Earth Orbiting
• High temporal resolution (weather dynamics)
• Tracer wind velocities
• Synergism with ground-based observations
• Lightning and microwave precipitation

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Geostationary Imaging Fourier Transform
Spectrometer GIFTS A revolutionary weather
forecast tool
New Technology for Atmospheric Temperature,
Moisture, Winds
EO-3 GIFTS-IOMI
4-d Digital Camera
Horizontal Large area format Focal Plane
detector Arrays
Vertical Fourier Transform
Spectrometer

Time Geostationary Satellite
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GIFTS Sampling Characteristics

• Two 128x 128 Infrared focal plane detector
  arrays with 4 km footprint size
• Two 512 x 512 Visible focal plane detector
  arrays with 1 km footprint size
• Field of Regard 512 km x 512 km at satellite
  sub-point
• Ten second full spectral resolution integration
  time per Field of Regard

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GIFTS IR Measurements
Wavelength (?m)
Wavelength (?m)
Wavenumber(cm-1)
Wavenumber(cm-1)

• Shortwave IR Focal Plane
• (4.4 to 6.1 microns)
• Water vapor sounding
• Carbon Monoxide profiling
• Boundary layer temperature sounding
• Surface temperature
• Cloud Properties

• Longwave IR Focal Plane
• (8.8 to 14.6 microns)
• Temperature sounding
• Ozone profiling
• Cloud altitude
• Surface temperature
• Cloud Properties

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GIFTS Water Vapor Airborne Validation
Airborne Demonstration of Concept 1-2 km
vertical resolution
water vapor profile
measurements
Raob
NAST
Altitude (km)
H2O Radiance Spectrum
Relative Humidity ()
Wavelength (?m)
3km
Distance (75 km)
Wavenumber(cm-1)
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Water Vapor Flux (3 x 3 GIFTS Cubes)
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Roadmap to Next Generation
Studies Laboratory Demonstration
Aircraft
Water Vapor Tracer Wind Demonstration
Future Geo-Sats
EO-3 (GIFTS-IOMI)
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GIFTS-IOMI Program Concept
Indian Ocean Ops
TECHNOLOGY

• Imaging Interferometer
• Cryogenic Michelson Interferometer
• Laser Metrology System
• On-Board Calibration
• LFPA and Cryogenic Cooling
• 128 x 128 Infrared Detector Arrays
• Redundant Cryo-Coolers
• High Speed Signal Processing
• Rad-Hard Analog to Digital Converters
• PowerPC Rad750
• Data Compression
• Rad-Hard Processors
• Pointing and Control
• Star Tracker
• 512 x 512 Visible Detector Arrays
• Lightweight Optics
• SiC Telescope

VALIDATION
INFUSION
NASA - Demonstrate Wind Sounding Measurement
Concept Validate the Technologies
NOAA - Demonstrate Operational Utility Infuses
Technology into NOAA instruments
Navy - Provides Advanced Imaging/Sounding Data
Products for Fleet Operations
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GIFTS Fills Geostationary Data Void
(India) 83 E
GIFTS-IOMI
(USA) 75º E
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GIFTS The Geostationary Component
GIFTS
CALIPSO
CloudSat
Aqua
PARASOL
Aura
NPP/NPOESS
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The Significance of GIFTS

• Observation Capability Will Revolutionize Weather
  
• Air Quality Forecasting
• Hurricane landfall (steering wind profiles)
• Tornadic storms (stability change monitoring)
• Nowcasting (rapid measurement update)
• Numerical prediction (initial p,T,q,V data)
• Air quality forecasts (O3 and CO transport)