1. Geostationary Imaging Fourier Transform Spectrometer An Update of the GIFTS Program Geostationary Imaging Fourier Transform Spectrometer An Update of the GIFTS Program W. L. Smith (NASA Langley Research Center) Presentation to the GOES Users Conference II (October 1-3, 2002, Boulder Colorado)

2. 4-d Digital Camera: Horizontal: Horizontal: Large area format Focal Plane detector Arrays Vertical: Vertical: Fourier Transform Spectrometer Time: Time: Geostationary Satellite New Technology for Atmospheric Temperature, Moisture, & Winds EO-3 “GIFTS-IOMI” GIFTS GIFTS – A revolutionary weather forecast tool Geostationary Imaging Fourier Transform Spectrometer GIFTS – A revolutionary weather forecast tool Originators: NASA(LaRC), University of Wisconsin (CIMSS), and Utah State University (SDL)

3. Advanced Geostationary Studies (AGS) Program Roadmap Studies Laboratory Demonstration Future Geo-Sats Aircraft Water Vapor Tracer Wind Demonstration EO-3 (GIFTS-IOMI)

4. NASA GIFTS Instrument & Supporting Technologies (~105 M) Navy Spacecraft & Instrument Lifetime Enhancements (~70 M)NOAA US Ground System, Algorithms, Data Processing & Archive (~40 M) Partner Contributions Air Force (STP) Launch Vehicle & Launch Services (~65 M) Australia (BoM) * IO Ground System, Data Processing & Archive (~20 M) * Under negotiation Revolutionary Weather Observations Validation of Next Generation Geostationary Meteorological Satellite System (~300 M)

5. GIFTS-IOMI Program Concept 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 TECHNOLOGY VALIDATION Indian Ocean Ops 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 INFUSION

6. 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 ~ 80,000 Atmospheric Soundings every minute

7. GIFTS IR Measurements and Products Products: Water vapor (soundings, fluxes, winds) Temperature (sounding, stability) Carbon monoxide concentration (2 Layers) Ozone concentration (4 Layers) Surface Temperature and emissivity Clouds (altitude, optical depth, microphysical properties, winds) Aerosol Concentration and Depth (8.8 to 14.6 microns)(4.4 to 6.1 microns)

8. GIFTS Performance Relative to GOES 1 Per 3000-km x 3000-km area 2 Vertical Resolution (3:1) per Area Resolution (4:1) per Coverage Rate (6:1) relative to GOES 2 x

9. Moisture Weighting Functions Pressure (hPa) GIFTS (1750) GOES (18) 1000 100 GIFTS will have more and sharper weighting functions compared to the current GOES sounder Retrievals will have much better vertical resolution GIFTS Improvements WRT GOES Sounding System

10. GIFTS – Water Vapor Airborne Validation Altitude (km) Relative Humidity (%) Distance (75 km) 3km Airborne Demonstration of Concept: 1-2 km vertical resolution water vapor profile measurements NAST Raob Wavenumber(cm -1 ) H 2 O Radiance Spectrum Wavelength (  m)

11. I-HOP Radiosonde Comparisons June 3, 2002 NAST:16:02 UTC 36.61N, -97.48W RAOB: CF (15/18 UTC) 36.61N, 97.49W NAST:12.53 UTC 36.61N, -97.48W RAOB: WWR (14UTC) 36.43N, 99.53W June 9, 2002 June 11, 2002 June 12, 2002 NAST:16:18 UTC 36.46N, 101.05 W RAOB: WWR (14UTC) 36.43N, 99.53W NAST:19:40 UTC 36.,27N, 99.73 W RAOB: WWR (17UTC) 36.43N, 99.53W

12. ARM (Lamont OK) Comparisons

13. NAST-I Water Vapor Tracking Demonstrates GIFTS Wind Profiling Technique δt~35 min 60 km x 40 km WindMeasurement

14. Water Vapor Flux (3 x 3 GIFTS Cubes)

15. GIFTS Fills Geostationary Data Void GIFTS-IOMI (India) 83 E (USA) 75º E

16. GIFTS CALIPSO Aqua CloudSat PARASOL Aura NPP/NPOESS GIFTS – The Geostationary Augmentation Of the Earth Observing System (EOS)

17. Summary 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 (O 3 and CO transport) Enhanced Research Data Sets: Aerosol and Cloud Radiation Feedback Mission Atmospheric Chemistry Mission Global Precipitation Mission Global Weather Experiments (e.g., THORPex) Technology Transfer into GOES: