OCTS CAL/VAL AND ALGORITHM WORKSHOP


Hiroshi Kawamura
OCTS Team Leader
Tohoku University

A workshop to present the OCTS Cal/Val plan and algorithm to OCTS-data user community was held on 3-4 June 1996 at JAXA's EORC in Tokyo. In the workshop, the OCTS atmospheric and in-water algorithms were reviewed and discussed. There were 37 Japanese participants and 10 participants from abroad.

The entire day of 3 June was devoted to presentations on the OCTS team activities and related programs.

The OCTS team was established in JAXA's Earth Observation Research Center (EORC) in July 1995. The team has been working to organize existing OCTS activities for OCTS product generation. The fixed OCTS plans were presented by the OCTS team members. Mr. Nakamura (sub-team leader, overall management) presented the overall view of OCTS team activities, and Mr. Shimada (sub-team leader, technical management) summarized the overall plans of Cal/Val and the algorithm. Following these, Miss Oaku (Leader of Calibration sub-team) presented the detailed plan for OCTS calibration. Mr. Mitomi (Leader of Algorithm sub-team) introduced the whole structure of OCTS algorithms for further presentation of the atmospheric correction and the in-water algorithm. Mr. Mukaida (Leader of Validation sub-team) explained the truth-acquisition field programs for the OCTS Cal/Val and algorithm tuning. These presentations were chaired by Dr. Kawamura, OCTS team leader.

The programs related to the OCTS team activities and scientific plans were introduced by the supporting scientist group and others. Special calibration plans using AVIRIS sensor onboard an aircraft and YBOM, which is an ocean buoy designed for OCTS Cal/Val, were presented by Mr. Shimada and Dr. Senga (Tokai Univ.). Field programs organized by the Fishery Agency and cooperating with scientists worldwide were presented by Drs. Matsumura (Fishery Agency) and Saitoh (Hokkaido Univ.). Inter-comparison of the Chl-a measurements and the ocean optical instruments were carried out in the beginning of 1996. Many organizations and individuals have joined the inter-comparison to standardize the Chl-a measurements for OCTS product verification. The results of the Chl-a and optical instruments inter-comparison were presented by Drs. Furuya (Univ. of Tokyo) and Kawasaki (Fishery Agency)/Kishino (Riken), respectively. Field campaigns for OCTS were described by Dr. Saino (Nagoya Univ.).

Detailed presentations of the OCTS algorithm and discussions were made on 4 June. The scientists developing the OCTS algorithm presented its principles and methodology based on presentations of the OCTS team. Drs. Fukushima and Nakajima presented the atmospheric correction. Dr. Fukushima developed the whole atmospheric correction including scattering-brightness tables produced by Dr. Nakajima. Dr. Kishino presented the OCTS in-water algorithm developed using bio-optical ocean measurements. OCTS products and data distribution were introduced by Mr. Nakamura. These presentations and intensive discussions were chaired by Dr. Shimoda (ADEOS program scientist, Tokai Univ.). A welcome party was held in the evening.

ADEOS is about to be launched. The OCTS team is now hard at work generating well calibrated and validated products using OCTS data.


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