Meeting Minutes

 

ADEOS & ADEOS-II Joint Symposium

 

 

 

December 6 - 10, 1999

 

 

Kyoto International Conference Hall, Kyoto, Japan

 

 

 

 

 

 

Prepared by TNK Space Corporation

Meeting Minutes

Subject: ADEOS & ADEOS-II Joint Symposium/ Workshop
Place:Kyoto International Conference Hall, Kyoto, Japan
Date:December 6 - 10, 1999

Day 1 (December 6, 1999)

Session:Plenary Session
Room:Main Hall
Agenda:
  1. Opening Remarks and Introduction (JAXA Mr. Yoji Furuhama)
  2. Review for ADEOS & ADEOS-II Joint Symposium/ Workshop (JAXA Dr. Toshiro Ogawa)
  3. ADEOS Science Program Overview (JAXA ADEOS Program Scientist Dr. Haruhisa Shimoda)
  4. ADEOS-II Science Program Overview (JAXA ADEOS-II Program Scientist Dr. Toshifumi Yasuoka)
  5. ADEOS Scientific Achievements
     5.1 "Year to year variability of new production in the northern North Pacific estimated from remotely sensed sea surface temperature and chlorophyll a"(Nagoya University Dr. Toshiro Saino)
     5.2 "Land vegetation monitoring using ADEOS OCTS"(Chiba University Dr. Yoshiaki Honda)
     5.3 "Aerosol and cloud signature in visible-infrared sensor's data"(University of Tokyo Dr. Teruyuki Nakajima)
  6. Introduction of ADEOS Synergism Dataset (JAXA Mr. Tasuku Tanaka)
  7. ADEOS-II Mission and Operations (JAXA Mr. Ueno)
  8. Development Status Report of ADEOS-II (JAXA Shunichi Kawata)
  9. Development Status of GLI (JAXA Mr. Masakatsu Nakajima)
  10. Development of AMSR (JAXA Mr. Kawata)
  11. Development Status of Data Management and Distribution System (JAXA Ms. Satoko Horiyama and Mr. Shigemitsu Fukui)
  12. ILAS-II Program Status (EA Mr. Yasuhiro Sasano)
  13. SeaWinds Program Status (NASA Dr. James Dodge and Mr. Winn)
  14. POLDER-II Program Status Report (CNES Mr. Alain Podaire)
  15. Introduction of Future Earth Observation Programs: GCOM (JAXA Mr. Shinichi Sobue)

Summary of Major Discussions

1. Opening Remarks and Introduction (JAXA Mr. Yoji Furuhama)

 JAXA Executive Director Dr. Furuhama welcomed all participants. A summary of Dr. Furuhama's speech follows:
  • This is the place where an international conference was held to discuss global environmental issues two years ago and produced the Kyoto Protocol.
  • Thought the ADEOS spacecraft ceased its operations prior to its expected life, lots of useful data have been obtained that have been contributing to studies on global changes.
  • The ADEOS-II spacecraft is under system testing and the data processing system is under development.
  • Cal/val activities are under way.
  • The H-2 launch failed due to a failure of the combustion unit. ADEOS-II launch is delayed, however, JAXA will make the best effort to maximize the scientific outcome from the ADEOS-II mission.
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2. Review for ADEOS & ADEOS-II Joint Symposium/ Workshop (JAXA Dr. Toshiro Ogawa)
  • This is the fourth ADEOS symposium. The first symposium was also held here in Kyoto.
  • This is a first attempt to combine ADEOS and ADEOS-II symposium. This is useful to effectively utilize the scientific outcome of ADEOS in proceeding the scientific activities in the ADEOS-II program.
  • The organization of the ADEOS-II science project was presented.
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3. ADEOS Science Program Overview (JAXA ADEOS Program Scientist Dr. Haruhisa Shimoda)
  • Dr. Shimoda outlined the achievements of the ADEOS Science program. The following is a list of the study subjects covered by the ADEOS science program.
  1. Carbon cycle
  2. Energy cycle
  3. Aerosol
  4. Cloud properties and water vapor
  5. Monitoring of Ozone layer
  6. Operational Use
  • Numerical weather prediction
  • Fishery
  1. Observation of Global Events (e.g., volcanic eruptions, El Nino, global warming)
  • Dr. Shimoda summarized the status of calibration and validation. Most calibration and validation activities have been completed. The campaign results were presented in the workshops.
  • Dr. Shimoda presented a summary of the number of publications. The total number of publications is approximately 900 to date.
Questions &Answers: None.

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4. ADEOS-II Science Program Overview (JAXA ADEOS-II Program Scientist Dr. Toshifumi Yasuoka)

 Dr. Yasuoka presented an overview of the ADEOD-II Science program on behalf of Dr. Sumi, ADEOS-II Program scientist. Dr. Yasuoka's presentation covered the following topics:
  • Instruments and configuration of the ADEOS-II spacecraft.
  • Science missions; i.e., to understand Water and Energy cycle, Carbon cycle, and Climate changes.
  • Data products associated with each instrument.
  • Cal/Val Programs that includes CEOP (Coordinated Enhanced Observation Period) and individual CAL/VAL programs.
  • A summary of the second RA (Research Announcement).
Questions & Answers: None.

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5.ADEOS Scientific Achievements

 5.1 "Year to year variability of new production in the northern North Pacific estimated from remotely sensed sea surface temperature and chlorophyll a"(Nagoya University Dr. Toshiro Saino)
Dr. Saino presented his study results, which are part of the JGOFS (Joint Global Ocean Flux Study). Dr. Saino's presentation covered the following topics.
  • CO2 and temperature dependency on production of Sea surface NO3-
  • A new algorithm to improve the accuracy in estimating the quantity of Sea surface NO3-.
Questions & Answers:
Question: How do you measure NO3- that falls down from the sky?
Answer: The algorithm calculates NO3- production based on a simple assumption that does not include contribution of NO3- contained in aerosol or raindrops.

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5.2 "Land vegetation monitoring using ADEOS OCTS" (Chiba University Dr. Yoshiaki Honda)
Dr. Honda presented his study results on the above subject. Dr. Honda's presentation covered the following topics.
  • Dr. Honda is not satisfied with the ADEOS OCTS data because channels 7 and 8 in the ocean mode were almost saturated. Channels 7 and 8 are in the infrared region and important for retrieving vegetation indices.
  • Images with 700m- resolution and those with 1,100m- resolution are significantly different for the land vegetation monitoring purposes.
  • A method to obtain grass density and height.
Questions and Answers:
Question: In the global coverage images you presented, AVHRR data contained less cloud than OCTS data even though both AVHRR and OCTS 10-day composite data were taken in the same 10-day period. Why is the difference?
Answer: Because swath width is different for AVHRR and OCTS, AVHRR observed 10 times in the 10-day period and OCTS observed 2 times in the same period. AVHRR had better chances to observe cloud-free images.

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5.3 "Aerosol and cloud signature in visible-infrared sensor's data(University of Tokyo Dr. Teruyuki Nakajima)
Dr.Namajima presented his study results on the above subject. Dr. Nakajima's presentation covered the following topics.
  • Aerosol distribution in October 1997.
  • Aerosol estimating methods have not been established and include significant errors.
  • GLI bands sensitive to aerosol.
  • Data analysis flow for OCTS data.
  • Comparison between OCTS and POLDER data.
  • Definition of dust index.
  • A long-term trend in Amazon area and Black Sea.
  • A list of instruments necessary for aerosol observation.
Questions & Answers:
Question: Do white caps affect aerosol data retrieval?
Answer: Yes, white caps can affect aerosol data retrieval. The algorithm reduces the white cap contribution by using sea wind speed. However, validation is still required to assure the data accuracy. To resolve this problem, we plan to use a shipborne sky radiometer.

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6. Introduction of ADEOS Synergism Dataset (JAXA Mr. Tasuku Tanaka)


Mr. Tanaka summarized the ADEOS synergism dataset. Mr. Tanaka's presentation covered the following topics.
  • The purpose of synergism; i.e., to extract useful information by combining data from multiple channels.
  • ADEOS instruments; wavelength, field of view,
  • A method to find land-ocean boundaries
  • Data file characteristics.
  • Data merging.
Questions & Answers: None.

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7. ADEOS-II Mission and Operations (JAXA Mr. Ueno)

Mr. Ueno summarized the ADEOS-II Mission and Operations. Mr. Ueno's presentation covered the following topics.
  • ADEOS-II Organization; i.e., the office of earth observation systems.
  • History of JAXA's earth observing programs.
  • Schedule
  • ADEOS-II objectives; global change observation, water and energy cycle, carbon cycle, 15- year continuous mission followed by GCOM (Global Change Observation Mission). ADEOS-II is part of GCOM.
  • Road map from ADEOS to GCOM.
  • Participating organizations.
  • Lessons learned from ADEOS program.
  • Development status.
  • ADEOS-II launch is delayed and a new launch date is under study.
Questions & Answers: None.

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8. Development Status Report of ADEOS-II (JAXA Shunichi Kawata)

Mr. Kawata summarized the development status of ADEOS-II. Mr. Kawata's presentation covered the following topics.
  • Status of the Proto-flight test (PFT); currently, the thermal vacuum test is in progress.
  • Results of the initial Electrical Performance Test (Initial EPT); no significant problems detected.
  • Results of initial alignment.
  • Delay of Solar Array PFT.
  • Options for the remaining PFT schedule under evaluation.
Questions & Answers: None.

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9. Development Status of GLI (JAXA Mr. Masakatsu Nakajima)

Mr. Nakajima summarized the development status of GLI. Mr. Nakajima's presentation covered the following topics.
  • Overview of GLI design.
  • Development schedule
  • PFT configuration.
  • Results of the optical performance test.
  • Status of PFT.
Questions & Answers:None.

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10. Development of AMSR (JAXA Mr. Kawata)

Mr. Kawata summarized the development status of AMSR. Mr. Kawata's presentation covered the following topics.
  • AMSR development was completed and delivered 1.5 years ago.
  • Overview of AMSR; e.g., configuration, optical performance, and development schedule.
  • Test flow and results of PFT.
  • Current status.
  • Future plan; performance test, test of antenna release mechanism, and test of antenna rotation mechanism.
Questions & Answers: None.

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11. Development Status of Data Management and Distribution System (JAXA Ms. Satoko Horiyama and Mr. Shigemitsu Fukui)

Ms. Horiyama summarized the development status of the AMOS data management and distribution system. Ms. Horiyama's presentation covered the following topics.
  • Overview of the data management and distribution system; system elements, data flow,
  • Data acquisition analysis indicates the system meets the data latency requirement (2hour 20 minutes for at least 80 % of data).
  • Description of standard products.
  • Development schedule.
Questions & Answers: None.

Mr. Fukui summarized the development status of the EOIS data distribution and management system. Mr. Fukui's presentation covered the following topics.
  • Overview of EOIS
  • Enhancement of EOIS for ADEOS program; active archive, use of granule ID.
  • User Services from EOIS; information services (catalogue, browse search, and data ordering), off-line services, and on-line services.
  • EOIS User Interface Software (EUS): EUS/GUI, EUS/WWW, and EUS/TTY.
  • Off-line and on-line data distribution services.
  • Standard higher level products (Level 2 and higher) will be released one year after the launch.
  • EOIS schedule.
Questions & Answers: None.

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12. ILAS-II Program Status (EA Dr. Yasuhiro Sasano)

Dr. Sasano summarized the development status of the EOIS data distribution and management system. Dr. Sasano's presentation covered the following topics.
  • Review on ILAS Project; objectives, observation wavelength, major specification, data processing, data products, examples of data, and scientific analysis on ozone change.
  • Characteristics of ILAS-II (major changes from ILAS)
  • Status of ILAS-II instrument.
  • Status of ILAS-II data handling facility located at NIES.
  • ILAS-II validation experiment plan; the core experiments - Kiruna balloon campaign, Showa ozone sondes measurements, and Alaska (or Showa) particle counter measurements.
  • ILAS-II scientific activities; Joint Research Announcement (EA, JAXA, NASA, and CNES) - 31 PIs selected.
  • ILAS-II follows-on mission - SOFIS (Solar Occultation FTS for Inclined- orbit Satellite).
Questions & Answers: None.

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13. SeaWinds Program Status (NASA Dr. James Dodge and Mr. Winn)

 NASA Headquarters Dr. Dodge presented NASA Headquarters perspective on the ADEOS/ ADEOS-II programs. A summary follows.
  • Change in NASA's way doing business; need to clearly define the benefits of new projects.
  • Earth science implementation plan; 5 fundamental questions including Climate variability and prediction and global water and energy cycle.
  • NASA's strategy with international partners including JAXA.
  • Results of JRA; many scientists will use data from multiple instruments.

Mr. Winn summarized the status of the SeaWinds program. Mr. Winn's presentation covered the following topics.
  • Overview of SeaWinds characteristics.
  • Science products; standard products and special products such as ice edges.
  • Ground systems and algorithms.
  • Data flow.
  • Status of the ground system; very similar to that for QuikScat.
  • Level processing block diagram.
  • SeaWinds instrument; subsystems, status.
  • Schedule.
Questions & Answers:
Question: Does the additional star tracker of the SeaWinds have independent windows?
Answer: The SeaWinds does not have a star tracker and depends on the star tracker provided by the spacecraft.

JAXA Mr. Ito announced that GLI 250m data management issues will be discussed on December 9th.

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14. POLDER-II Program Status Report (CNES Dr. Alain Podaire)

 Dr.Podaire summarized the status of the POLDER program. Dr. Podaire's presentation covered the following topics.
  • Overview of POLDER instrument; observation characteristics, technical features, calibration
  • POLDER products; three levels of standard products, land surface products, ocean color products, aerosol products, cloud characteristics products,
  • Product validation approach; software validation, algorithm validation, and product validation.
  • Scientific results; land surface, leaf area index, ocean color (comparison with OCTS data), aerosol.
  • Status of the ground system development.
  • ADEOS-II JRA selection of investigators.
  • Access to POLDER data; free of charge, non-redistribution license.
Questions & Answers: None.

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15. Introduction of Future Earth Observation Programs: GCOM (JAXA Mr. Shinichi Sobue)

Mr. Sobue presented JAXA's future earth observation program "GCOM". A summary follows.
  • Three goals of GCOM.
  • Roadmap from ADEOS to GCOM.
  • GCOM Missions; GCOM-A1, B1.
  • ADEOS-GCOM Continuity of measurement parameters and instruments.
  • GCOM instruments.
  • Preliminary study results; data rate allocation and memory capacity, weight and power allocation.
  • Status of GCOM.
  • Tentative schedule of GCOM.
  • GCOM instrument proposals and selection process.
  • Proposed specification of the AMSR Follow-on mission.
  • Proposed specification of the GLI follow-on mission.
Questions & Answers: None.

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