GLI Plenary

8 Dec 1999

Room E, 13:00 - 16:05

Outline Activities (Teruyuki Nakajima)
GLI Project - Current Status (Vu Saito)
Algorithm Implementation Review (GAIT, Takashi Nakajima)
EOS: Present Capabilities and Promises for the Future (Michael King)
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