- GLI Plenary Session -

8 Dec 1999

Room E, 13:00 - 16:05

  1. Outline Activities (Teruyuki Nakajima)
  2. GLI Project - Current Status (Vu Saito)
  3. Algorithm Implementation Review (GAIT, Takashi Nakajima)
  4. EOS: Present Capabilities and Promises for the Future (Michael King)
  5. Introduction (7 min/person) (New PIs)
    (1) Dr M J Lynch (Australian Region GLI validation programme)
    (2) Dr. Charles McClain (SIMBIOS project) (represented by G. Fargion)
    (3) Dr. Joji Ishizaki (Faculty of Fisheries, Nagasaki University)
    (4) Dr. O Hagolle (represented by Bertrand Fougnie)
    (5) Dr. Peter Challenor (represented by Anne Jolly of Southampton Oceanography Centre)
    (6) Dr. James Simpson (Scripps Institution of Oceanography, San Diego)
    (7) Dr. Thomas J. Greenwald ( Colorado University )
    (8) Dr. A. Siripong ( Chulalongkorn University )
    (9) Dr. Eugene Clothiaux ( Pennsylvania State University ) (represented by Dr. Roger Marchand)
    (10) Guest : Dr. Jurgen Fischer ( Free University of Berlin )

- GLI Plenary Session -

8 Dec 1999

Room E, 13:00 - 16:05

1. Outline Activities (Teruyuki Nakajima)

Dr Teruyuki Nakajima made opening comments with a summary of events since the last GLI meeting, and an explanation of the current situation regarding GLI; the organisation, algorithm development and Cal/val activities. He also referred to the failure of H-II Rocket and current situation. He finished his comments with a list of questions for the separate working groups to address in the evening sessions.
Q: (Dr. Bryan Franz, SIMBIOS) Is the magnitude of the interband geometry error similar to OCTS?
A: (Dr. Teruyuki Nakajima) It is larger, due to the increased number of bands

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2. GLI Project - Current Status (Vu Saito)

Dr. Vu Saito first gave an outline of the contents of his presentation, covering the following:
  • Project schedule so far/project organization chart
  • GLI (High level) software development (PIs, EORC/GAIT, Contractors) - operational software, related documents, operational system requirements and simulation data
  • Tentative plan for GLI software development and operation
  • GLI Standard algorithms (List of Ocean, cryosphere, land and atmosphere PIs)
  • Introduction of 3 current tasks: 250m data acquisition, Cal/Val activities and Tilt operation
Q: None

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3. Algorithm Implementation Review (GAIT, Takashi Nakajima)

Mr. Takashi Nakajima of GLI Algorithm Integration Team gave first a brief introduction of his GAIT team of scientists and researchers and gave his thanks to supporting staff. He introduced the following topics:
  • performance of standard software (Mr. Junichi Inoue, Fujitsu Ltd.)
  • development of GLI synthetic data (Ms. Hiroko Sugai , SED Co.Ltd.)
  • detailed discussion of GLI standard software development (individual working group sessions)
Mr. Inoue gave a 20-minute presentation on the following:
  • Outline
  • General workflow of GLI software development and data/ processing program flows
  • 3 test stages in EORC, summary and evaluation of test results of first stage
  • Performance results (speed and memory) and evaluation
  • Contents of install packages
  • Future plan (next test stage for software development and toolkit/common libraries)
Q: None

Following on, Ms. Hiroko Sugai presented GLI signal simulator (GSS) and GLI synthetic data (GSD), and ADEOS-II updated web-page, covering the following:
  • New functions of GSS: Snow BRDF, Canopy BRDF, ocean color
  • GSS on web-page
  • Plans for GSD (2 types - global and local types)
  • Global GSD data input - cloud and aerosol physical parameters, SST and chlorophyll + sample output
  • images
  • Local GSD input examples and output (test data)
  • ADEOS-II webpage has been updated, URL given, access route explained
Q: None

Dr. Vu Saito explained that some simulation data are available on CD ROM placed on the desk in front of the meeting room.

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4. Invited Speech
EOS: Present Capabilities and Promises for the Future
(Michael King)

Dr. Vu Saito gave a brief introduction of Dr. King, whose presentation covered the earth observation system, as follows:
  • Key areas of uncertainty in understanding climate and global change
  • Earth Science Mission Profile
  • Landsat 7 (goals and objectives )
  • QuikScat (launched June 19, 1999 )
  • Hurricane Cindy/Hurricane Dora data from QuikScat/SeaWinds
  • Simulated hurricane in NASA/NCAR
  • Terra observatory (launch scheduled for Dec 16, 1999)
  • EOS missions in development - explanation of instruments
  • Calibration and Validation responsibilities (EOS)
  • EOS validation strategy (satellites, field campaigns and surface networks)
  • Explanation of AERONET (Aerosol Robotic Network) as of Oct 1999
  • Safari 2000 (being planned for Terra validation); flux tower in Botswana (run by Max Planck Institute), NASA ER-2 and University of Washington CV-580.
  • Bidirectional reflectance measurements
  • Summary showing science analyses and validation
Q: (Dr. Roland Doerffer, GKSS, Germany) Can you tell us more about the data policy for Terra?
A: (Dr. King) Data for all USA sensors, is free and available to all. The file size is large. MODIS works on 5-minute granules. Data is processed for calibration, and ocean/land/atmosphere data is processed by MODIS PI teams for distribution. MODIS data is also directly broadcasted and can be picked up by 4m tracking dish.

MODIS is going through the same kind of integration etc processes as GAIT. Data processing is difficult, 100% of atmospheric data is processed, but only 50% of land and ocean data (every other pixel method). All 500/1000m bands are covered, but 250m band once each month, so users can access the data they require.
Q: (Mr. Tasuku Tanaka) A question regarding validation - is it validation or calibration?
A: (Dr. King) Sometimes it is in-situ properties, i.e. ground truth, but in case of high altitude aircraft it is more like intercomparison with calibration checked on ground (this is cheaper than space instruments)

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5. Introduction (7 min/person) (New PIs)

Dr. Vu Saito gave a presentation of the names of the new PIs to give their introductions.

(1) Dr M J Lynch (Australian Region GLI validation programme):

  • major marine remote sensing facilities in Australia
  • introduction of team members
  • ocean color cruise lab and field instrumentation (ocean and atmosphere)
  • GLI ocean color plans
  • Cooperative ocean observing experiment
  • tropical activities/Indonesian throughflow/Monte Carlo modelling etc.
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(2) Dr. Charles McClain (SIMBIOS project) (represented by Dr. G. Fargion)

  • SIMBIOS project and in situ data collection
  • CIMEL sun photometer
  • atmospheric/bio-optical data submitted to SeaBASS
  • address and email given (NASA Goddard Space Flight Center)
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(3) Dr. Joji Ishizaki (Faculty of Fisheries, Nagasaki University)

  • collection of sea-truth data for calibration and validation
  • objectives of task
  • names of Japanese CoI/PI and possible Asian CoI
  • geographical coverage
  • other possible data sources
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(4) Dr. O Hagolle (represented by Dr. Bertrand Fougnie)

  • Cross-calibration and GLI and POLDER
  • ADEOS-I experience
  • POLDER Absolute Calibration
  • Cross-Calibration of POLDER and OCTS
  • ADEOS-II cross calibration plan
  • Cross calibration using simultaneous measurements
  • Cross calibration over desert sites
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(5) Dr. Peter Challenor (represented by Dr. Anne Jolly of Southampton Oceanography Centre)

  • SST and ocean color
  • Lag correlation of SST anomalies
  • Using GLI data and anomalities
  • Importance of freshwater fluxes
  • Precipitation and evaporation
  • Comparison of net Air -Ocean Freshwater Fluxes with values from hydrographic sections bounding regions
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(6) Dr. James Simpson (Scripps Institution of Oceanography, San Diego)

  • New Research Retrieval Algorithms for Geophysical products from GLL, AMSR, MODIS and ATSR and data examples
  • ATSR vs. Buoy SST comparisons and data examples
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(7) Dr. Thomas J. Greenwald

  • Advanced methods for retrieving stratocumulus microphysical properties using combined GLI/AMSR data (problems and outline)
  • retrieval approach
  • application to GLI and AMSR
  • anticipated benefits of dual sensor approach
  • validation and intercomparison efforts
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(8) Dr. A Siripong

  • Abstract of proposal (monsoon properties using SeaWinds/GLI sensor data)
  • Schedule (2001 - 2003) and proposal contents
  • areas with monsoon circulation (study area)
  • Other areas of specific interest (ENSO, interENSO)
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(9) Dr. Eugene Clothiaux (represented by Dr. Roger Marchand)

  • validation of ADEOS II derived cloud properties (goal/purpose)
  • sources of independent data (ground sites)
  • high-resolution radar data and infrared data (time series)
  • retrieval data and in-situ measurements
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(10) Guest Speech : Dr. Jurgen Fischer ( Free University of Berlin )

  • Cloud top pressure principle, comparison with LIDAR
  • algorithm development, application and validation (cloud top pressure)
  • conclusion
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Dr. Vu Saito concluded the afternoon session by thanking everyone for their participation and announced the parallel sessions from 16:30.