Planning for the Hyperspectral Environmental Sensor (HES) Current Sounders 2002 Preparations for the Future AIRS NOAA GIFTS Demonstration Planned Anticipated.

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Presentation transcript:

Planning for the Hyperspectral Environmental Sensor (HES) Current Sounders 2002 Preparations for the Future AIRS NOAA GIFTS Demonstration Planned Anticipated HES Capabilities Ralph Petersen and Paul Menzel - NOAA

Future GOES GOES-R will address all four key remote sensing areas Spatial resolution – What picture element size is required to identify feature of interest and to capture its spatial variability? Spectral coverage and resolution – What part of EM spectrum at each spatial element should be measured? What spectral resolution is needed to analyze an atmospheric or surface parameter? Temporal resolution – How often does feature of interest need to be observed? * Radiometric resolution – What signal to noise is required and how accurate does an observation need to be?

* Conduct real time study of Forecasting impact of radiances / winds Nowcasting impact of derived product images * Gather case study data sets to enable Testing of NWP assimilation approaches Validating GIFTS products * Archive golden year of level 1-b radiances Pacific winter storms Severe storms in tornado alley Hurricanes in the Atlantic * Establish utilization approaches for HES day one NOAA GIFTS Demonstration Plan states goals are to

The road to HES VAS (geo experimental) GOES Sounder (geo operational) GIFTS (geo exp) (12) (18) (~1600) HES (geo oper) time (# of spectral bands) VTPR, HIRS (leo operational) CrIS (leo operational) IASI (leo operational) AIRS (leo operationally available) HIS (airborne experimental) IRIS (leo experimental) (~2400) (~3600) IMG (leo experimental) NAST-I (airborne experimental)

Background for NOAA’s GIFTS Activities GIFTS NMP contract formulation phase ended in April 2001 following successful completion of Preliminary Design Review. PDR was followed by extended formulation phase during Mission Confirmation Review (MCR). Formal agreement between NASA, NOAA and the Navy signed in summer 2002 created a GIFTS partnership in which: NASA would conduct the instrument development program, Navy and Air Force would provide the launch, and NOAA would provide the data collection and data processing capabilities leading to the measurement validation activities

- Establish ground reception site (Wallops with UW backup) - Establish seasonal suites of routine schedules for GIFTS - Distribute level 1b radiances in real time to NWP and research centers via ground com lines - Distribute derived product images to NWS FOs in virtual lab - Archive all level 1b data and some of the derived products - Develop NWP assimilation for radiances and winds - Study impact of GIFTS images and derived products on forecasting / nowcasting at NWS FOs - Establish HES utilization approaches for day one Reducing “Launch to Use Lag” is NOAA (and NWS) Priority NOAA wrote GIFTS Product Assessment Plan to assure that GIFTS Demonstration goals are met. Tasks include:

Specifically: Algorithm development will address GOES products soundings winds cloud properties land surface products ocean products earth radiation budget ozone / trace gases / volcanic ash Derived product images will include 3 layers of moisture and total column atmospheric stability cloud temperature and phase land surface temperature diurnal excursions

NOAA GIFTS PAP is a seven year plan that details * GIFTS Level 0 Data Acquisition Primary ground system at Wallops Backup at UW Access to full data stream at UW * Data and Metadata Archive Some raw data (for NMP team) Initially all Level 0 data (for NOAA reprocessing to level 1 with improved algorithms) Evolves to Level 1 archive of “golden year” at NCDC * Real Time Data Processing Level 0 to Level 1 using software with real time efficiency provided by NOAA Level 1 to 2+ using algorithms and software developed by largely at UW/CIMSS * Demonstration of Utility of GIFTS Data and Products and Distribution to End-Users Participation in cal/val intercomparisons of radiances and products Real time distribution of GIFTS radiances (compressed or subset) and winds to EMC for NWP impact studies Real time web access by selected NWS FOs to multispectral and derived product images of atmospheric water vapor, stability, cloud properties, land surface temperatures,… Research on SST, volcanic ash, ERB, trace gases Spans: winter storms in eastern Pacific (Feb, Mar), severe storms in Midwest (Apr, May, Jun, Jul), and hurricanes in Atlantic (Aug, Sep, Nov) runs 24 hours per day seven days a week amap during demonstration year * NWP impact & research continues with GIFTS until GOES-R

NESDIS/ORA to plan/conduct GIFTS science studies NESDIS/OSD to infuse GIFTS technology in HES NESDIS OSDPD to help plan data distribution NESDIS Coop Insts to develop algorithms and derived products NWS NCEP to test GIFTS impact EMC for data assimilation SPC, AWC, TPC, HPC for derived products FOs for operational real time utilization NCDC for archive management NOAA GIFTS Demonstration will engage

Planning for the Hyperspectral Environmental Sensor (HES) Current Sounders 2002 Preparations for the Future AIRS NOAA GIFTS Demonstration Planned Anticipated HES Capabilities

Record Earliest Tornado at Milwaukee, WI on 8 Mar 2000 The GOES-8 Sounder monitors important precursors to the event. moist axis dry slot (dark areas) Retrieval correctly subtracting moisture aloft (within the mid-level dry intrusion) Retrieval correctly adding moisture in the lower levels (within the moist axis) GOES Retrieval First Guess (S.E. WI)

Evolution of GOES Sounder SFOV Lifted Index (stability) DPI on 17 June 2002 Axis of instability (<-8) and its persistence in sequence of two-hourly interval GOES LI DPI focus attention for favorable convective conditions to central west Kansas and Oklahoma - Texas Panhandles. Later severe weather reports included numerous hail reports (to 1.25”) from far northern Texas Panhandle into far southwest Kansas. Other hail also fell around western central Kansas/Nebraska border region. Panels show nominal times from 13 to 23 UTC.

NWS Forecast Office Assessment of GOES Sounder Atmospheric Instability Summer 1999 assessment of usefulness of hourly LI, CAPE, & CINH product for predicting location/timing of thunderstorms There were 248 valid weather cases. - Significant Positive Impact (30%) - Slight Positive Impact (49%) - No Discernible Impact (19%) - Slight Negative Impact (2%) - Significant Negative Impact (0) Figure from the National Weather Service, Office of Services

Verification Cloud-top pressure based on NESDIS product Effect of GOES (sounder cloud) data on 3-h RUC cloud forecasts “ much improved cloud forecasts” 1800 UTC 2 Oct 2001 Stan Benjamin – NOAA/FSL 3h 40km RUC cloud-top fcst No GOES cloud assimilation 3h 20km RUC cloud-top fcst w/ GOES cloud assimilation

Time summed forecast impact (%) of no GOES and no POES on 91 km grid covering nearly entire EDAS domain for T, RH, u, and v meteorological fields after 24-hrs of 32-km Eta model integration. Test period is 0000 UTC 24 October 2001 to 1200 UTC 08 November No-GOES No-POES GOES impact on Eta forecast significant and positive last autumn

GOES in NWP, routine and experimental: Model GOES Data NCEP GlobalSounder Radiance, Imager Winds, Imager Radiances Eta ModelSounder Radiance, Sounder PW, Imager Winds, Data for LandDataAssimilationScheme, Sounder Clouds FSL’s RUCSounder TPW, Sounder Clouds, Rapid-scan winds (exp) CIMSS CRASSounder PW, Sounder Clouds Australia (LAPS)Imager Winds ECMWFImager Winds, Imager Radiances GFDL (experimental)Imager Winds NOGAPSImager Winds, Sounder Winds NAAPSImager Biomass Fire Product CSU RAMSImager Biomass Fire Product UW ALEXIChange of Sounder Skin Temperature, Imager insolation Data Assimilation -- GOES radiances and products have a major role

Planning for the Hyperspectral Environmental Sensor (HES) Current Sounders 2002 Preparations for the Future AIRS NOAA GIFTS Demonstration Planned Anticipated HES Capabilities

* Current GOES sounder resolves three tropospheric layers of temperature and moisture every km in clear skies over CONUS plus in cloudy skies it determines cloud top properties. * It is filling gaps in conventional and polar orbiting observing systems. * GOES sounder DPI depiction of changes in time and space are being embraced by the NWS forecast offices * NWP impact from three layers of GOES moisture is positive in Eta model. Direct radiance assimilation in GDAS progressing well. * But, full worth of geostationary data not yet realized; 4-DVAR strategies offer hope. * Beyond NWP, there are other areas where GOES data can be useful but metrics are elusive

GIFTS in 2008 will be pathfinder for HES 4-d Digital Camera: Horizontal: Horizontal: Large area format Focal Plane detector Arrays Vertical: Vertical: Fourier Transform Spectrometer Time: Time: Geostationary Satellite NASA Test of New Technology for Atmospheric Temperature, Moisture, & Winds NOAA Demo of Real Time Processing and Use of Hourly Hyper-spectral Data

Inferring surface properties with high spectral resolution data Barren region detection if T1086 < T981 T(981 cm -1 )-T(1086 cm -1 ) T(1086 cm -1 ) Barren vs Water/Vegetated AIRS data from 14 June 2002

AIRS observations of tropical storm Isadore on 22 Sept ~19:12-19:18 UTC ~999 1/cm radiances Brightness temperature spectra Brightness Temperature Spectra reveal changes in atmosphere from eye to boundary of Tropical Cyclone

GIFTS 2 Bands Spectral Measurements GIFTS Spectral Imaging Simulation Upper High Upper Low Middle Surface

Planning for the Hyperspectral Environmental Sensor (HES) Current Sounders 2002 Preparations for the Future AIRS NOAA GIFTS Demonstration Planned Anticipated Capabilities

Moisture Weighting Functions Pressure (hPa) Advanced Sounder (3074) GOES (18) UW/CIMSS High spectral resolution advanced sounder will have more and sharper weighting functions compared to current GOES sounder. Radiance data and retrievals will have better vertical resolution.

The advanced sounder has more and sharper weighting functions UW/CIMSS These water vapor weighting functions reflect the radiance sensitivity of the specific channels to a water vapor % change at a specific level (equivalent to dR/dlnq scaled by dlnp). Moisture Weighting Functions Pressure Weighting Function Amplitude Wavenumber (cm-1)

Current - GOES ~2 Pieces8-9 Pieces GIFTS GIFTS Vertical Resolution Analysis for WV Objective: Improved Water Vapor Information GOES Vert-Res.: 6-8 Km GIFTS Vert-Res.: 2-4 Km

Simulations of Low vs High Spectral Resolution Retrievals Geo-I gets <1 K rms for 1 km T(p) and <10% rms for 2 km RH(p) Temperature Moisture Strategy is (1) use all channels in a regression first guess and then (2) use sub-set of channels for physical retrieval

Detection of Temperature Inversions Possible with Interferometer Detection of inversions is critical for severe weather forecasting. Combined with improved low-level moisture depiction, key ingredients for night-time severe storm development can be monitored. Spikes down - Cooling with height Spikes up - Heating with height Texas Ontario Brightness Temperature (K) (low-level inversion) (No inversion) GOES Wavenumber (cm -1 )

WV vertical structure revealed with Geo-Interferometer Altitude, km Two flight tracks from NAST-I during CAMEX-3 September 14, km RH %

HES balance of temporal (15 min), spectral (.5 cm-1), spatial (1-10 km), and radiometric (.1 K) capabilities will * Depict water vapor as never before by identifying small scale features of moisture vertically and horizontally in the atmosphere * Track atmospheric motions much better by discriminating more levels of motion and assigning heights more accurately * Characterize life cycle of clouds (cradle to grave) and distinguish between ice and water cloud ( which is very useful for aircraft routing) and identify cloud particle sizes (useful for radiative effects of clouds) * Measure surface temperatures (land and sea) by accounting for emissivity effects (the improved SSTs would be useful for sea level altimetry applications) * Distinguish atmospheric constituents with improved certainty; these include volcanic ash (useful for aircraft routing), ozone, and possibly methane plus others trace gases.

Summary * GOES Sounder utilization is still evolving and improving; another decade of opportunity * Excellent data sets are being gathered to facilitate sounder science and algorithm development (e.g. IHOP, AIRS, 4 geo sounders) * GIFTS is serving a pathfinder role for HES; NOAA will use GIFTS to set early utilization of HES * The right balance of spatial, temporal, spectral, and radiometric capabilities is nearer

FY03 GIFTS-PAP Activities On critical path are 1.Ground system design for reception and L0 to L1 processing 2.ATBDs for primary GIFTS products 3.Validation Plans 4.Data Assimilation Strategies 5.Visualization systems design FY04 is first year with competed participation Initial R&D activities emphasize experiments with current GOES Sounder and EOS (Earth Observing System) AIRS (Atmospheric InfraRed Sounder) data and with aircraft high spectral resolution data sets from Scanning HIS and NAST-I (NPOESS Airborne Sensor Testbed-Infrared). GIFTS PAP will be administered by ORA with TAC guidance

GOES Program Manager  ORA GOES Scientist  EMC GOES Scientist       ICAPOP SPOP WPOP PPOP --- POPs   NWS Product NASA Management University Plans

Objectives for GIFTS Demo Get useful data products into NCEP and NWS offices in a timely manner. Validation of GIFTS data products. Demonstrate an X-Band downlink capability Demonstrate techniques for ground data compression Demonstrate Real-Time Level 1 product generation Demonstrate Real-Time Level 2+ product generation Create a complete data archive for later analysis. Working Assumptions  SSEC - NCEP direct link for compressed radiance data; SSEC-NWS web distribution of data products; NWS develops Data Assimilation; CIMSS- NWS develop Nowcasting.  Products available at SSEC/CIMSS.  Wallops primary reception; SSEC backup receiver.  Full 55+ Mbps real-time link between Wallops and SSEC.  SSEC design, specify H/W, install S/W; Wallops procure H/W and operate.  SSEC design, specify, procure, install, and operate.  Write Level 0 data tapes at Wallops; Archive at SSEC.