• Should merge with GLI-PI's and continue?
• Found the application studies in progress, especially SeaWiFS, POLDER
• Application to the open ocean studies seems to be OK. Coastal, Case II waters are problematic.
• Continuity of data sets from different sensorsà Importan
• Chl-a may be increasing
• Recommend POLDER Team to further improve algorithm for Chl-a.

Dr. R. Frouin

· Regarding Dr. Saino's statement on expansion of Chl-a, do you have any evidence?

Dr. Ishizaka

· The emphasis should be placed not on the increase of Chl-a, but on the change. The global level changes are just started to be observed.

Dr. Fukushima

·As far as presentation from Hirawake and Mitchell, they have observed a gradual increase in the past 3-4 years. Indeed, the natural variability exists, but this will be more threatening.

Dr. Hirawake

· Maybe increase of Chl-a. But in the South Ocean, there is a 4-8 year up-and-down cycle of temperature. But maybe it will decrease in a few years. I don't think it will continue to increase.

Dr. Fukushima

· So you are in the scientific point of view. Not increase, but change.

Dr. Mitchell

·Regarding the polar region algorithm, the polar region contains 20% of the World Ocean. We have lots of data spread out but they are not organized. SeaBAM type data measure should be organized to meet these algorithm challenges.

Dr. Fukushima

·Yes.

Dr. Campbell

·[presents a slide on the OHP. The slide shows "OCTS vs. SeaWiFS Chl", demonstrating the fact that these algorithms are different.] We have to make sure there's a compatibility of Chl derived by different sensors. The figure shows comparison of Chl derived from OCTS and SeaWiFS. They are both from the same SeaBAM input data but there are different. We should work on to reduce the differences so that we can get consistency.

Dr. Saino

·Does NASA have any project working on this matter?

Dr. Campbell

·I think SIMBIOS is moving towards that direction.

Dr. Mitchell

·It has been a major priority to insist on data delivery and integration without merged data. I think it is required in the Japanese scientific community to push all the data together and centralize it. Janet's data is from 20 different data systems, institutions and PI's.

Dr. Saino

·I am not very familiar with that.

Dr. Ishizaka

·I agree with Mitchell that the Japanese researchers need such an organization. We have to do merging of the data in order to make a quality database.

Dr. Mitchell

·Does JAXA commit resources and data system required in synthesized way? Is it possible or does it have to be done on the PI side?

Dr. Saino

·Any JAXA representative here?

Dr. Ishizaka

·In a sense, I am in charge, but I have to work closely with JAXA on this matter.

Dr. Frouin

·It's not only important to develop that, but also important to develop the algorithm. You need centralized data set or system so that everyone can access it easily. Consistent data is important.

Dr. Fargion

·SIMBIOS is ready for SeaBAM in year 2000. We will be happy to help JAXA in that aspect. We do protocols, and construct database. We can invite someone from Japan when we are done, and transfer the techniques and know-hows.

Dr. Schlittenhardt

·Probably it needs more network support. I have a question to SIMBIOS. How early will it be to support such database? They can be used as integrated part but it is more difficult to put them locally to different databases.

Dr. Fargion

·I think it is a good idea, we should definitely discuss this. We look at different databases to facilitate the interfaces among different databases. JAXA can see the structure of our system and see if it can be implemented. One comment, PI sharing the data, the lack of tight connection is a big problem.

Dr. Asanuma, JAMSTEC

·We can identify each team to get a scientific advantage. For the end user, we don't care for the scientific advantage. We want consistent algorithm; we don't care the scientific advantage of SIMBIOS. We should have an operational algorithm for Chl-a.

Dr. Lynch

·With regard to the performance of algorithm, there was a comment about the existence of a high clear sky radiance in Southern Hemisphere. But it doesn't mean the calibration is bad in the south. So the clear sky retrieval will be a different story. We should examine one-level-lower products and compare, rather than comparing the higher products in cloud masking.

Dr. Schlittenhardt

·My opinion from mathematical point, I would like to see if there is an easy way to go with one algorithm. I would like to see to examine the differences in new products.

Dr. Fukushima

·How shall we implement an opportunity to discuss such things?

Dr. Campbell

·Perform international team meeting to see the international quality of merging data. Dr. Peter, Mr. Tanaka and I are working on the proposal. We can have a workshop once a year. The first one can be devoted to algorithm. As a part of this, we try to get agencies to make diagnostic database. We identify some sites globally distributed. How do we get the consensus on algorithm?

Dr. Fukushima

·Time is now 11:30 so let's discuss the report that we have to submit on Friday.

Dr. Saino

·On the slide, I recommended to further improve Chl-a for POLDER team, do you agree? (To the audience)

Audience

·Why not OCTS and SeaWiFS?

Dr. Saino

·[Adds the above two on the slide.]

Dr. Doerffer

·River Program using OCTS was mentioned on Monday. Can you give a further explanation on it?

Dr. Kishino

·We have selected some good river images from level-1 data of OCTS. But level 1 is only available at this point. Then, we want to add atmospheric correction. Then, we can retrieve the Chl-a. If we have the correction, we can do simultaneous retrieve values of Chl-a.

Dr. Kawamura

·I want to add to that. Dr. Kishino is the PI of the River Project so I want to talk about the data processing part. We selected 20 rivers, 5 scenes each. That's in the server now. In future, we want to do more rivers. I will do Asian River Project. We will do rivers in the Asian continent. Please forward the request of rivers to Dr. Kishino, then he can discuss that with JAXA. Only large rivers are covered for now but small rivers have interesting characteristics, too.

Dr. Mitchell

·It seems like you are combining a bunch of data without coordination. You have to coordinate with someone doing the research locally. You can't totally rely on satellite pictures only. Are you working with people with local subsets? I am curious to see if there is any interaction.

Dr. Kawamura

·OCTS also have data. We presented an idea on Asian islands. We want people in the Asian Water to participate in OCTS. We just started because Asian Island Project is just approved. Dr. Fukushima , Dr. Kishino and myself are working on this. This is just a starting point....... Asian countries do not have the tradition of optics. So it is different for them to do the things we agree on doing in optical things. United States and Japan have an optical tradition so it is easier, we can exchange data.

Dr. Campbell

·I agree with Mitchell. I am a co-investigator for SeaWiFS project and we are looking at spectral signatures in 60 major rivers. If you don't have a processing means to do that at more than level 1b, we can help you from there.

Dr. Kawamura

·It is not the processing that is a problem. The problem is how to pick up such data and use them. All the data are in JAXA so we have to push JAXA continuously. River Project will be expanded later to examine more river-ocean relations.

Dr. Kawamura

·Optical retrieval is only the beginning. Then later, dynamics will be arisen, which is more of a difficult issue to investigate. We continue to investigate.

Dr. Asanuma

·Leads the Sensor-Science Team discussion by using the slides below.

• Intensive Local Area Coverage

• Update of Products

• Consistency of Products

• Data Archive for Future Process

Dr. Asanuma

·We should make recommendations on OCTS-related activities but there are questions.

• Which region to cover?

• What should be the schedule?

• How should we distribute the data?

• What format, software, media or network?

• What is version 5?

• Include atmospheric correction, case 2 water (which has many algorithms), and pigment algorithm?

• How much is it superior to version 4? Is there a big advantage?

It is a very important point to recommend to JAXA. How long does it take to make Ver 5. Should there be 6 and 7?

Consistency: nLw, Chl-a Concentration (having 2 algorithms which are used for OCTS and SeaWiFS), and CZCS like pigment. We are missing the CZCS like pigment.

• Policy for raw data?

• How to archive and how much should be distributed, processing facility?

• In-situ data (important topic), how should it be archived or exchanged with SIMBIOS team?

Dr.Fukushima

·Dr. Asanuma seems to be suspicious of Version 5. But I will go through this with everyone. Let's talk about data archive for future process. Any encouragement or comment to make to JAXA about keeping good archive system for OCTS data in future?

Dr. Saino

·I want to mention something. From 98 January Sendai Symposium, data distribution was a problem. We still have the same problem.

Dr. Fukushima

·Are you satisfied with the current OCTS data distribution system? No complains? [No response from audience.] OK, fine.

Dr. Mitchell

·It seems to work fine. I am concerned a bit about OCTS data having no longer great scientific value in future. We are just beginning the concept of time series, so we might find new events in 5 years from now. I hope you can keep these data for a long time, even new stuff comes out, because we have to go back to it sometimes. It always has to be easily accessible.

Dr. Kawamura

·We have to develop an user-friendlier browser, like in NOOS overview. We like to use more of low level data. Right information, row data, and dataset for each region, collaborate with local scientist to develop algorithm for each region. OCTS have more value in future.

Dr. Mitchell

·It seems you are not globally focused. The reason most people use Chl-a is that's the only available one. We can generate the product accurately the community will use it. 3 years from now, if we figure out how we get the carbon and specific topics, we want to come back to it and re-process it. We may have to come back to raw data to get accurate analysis. We don't know when we will reach that point. But may it happen many years later, we want to be able to access it.

Dr. Fukushima

Greg, we need global data processing capability in future. Are you comfortable if JAXA in future keeps reprocessed data under new algorithm?

Dr. Mitchell

·Scientifically, that's a valid data. I would like to see it happen.

·Mr. ? (Un-Identified )You need level-1B, right? (to Campbell) They shouldn't want the merged data, but dynastic data set. We need some point data of some certain point.

Dr. Campbell

·But we want GLOBAL, not 20 points around the world. I think the issue is we recommend JAXA that Level-1b data is possible. GAC data can be saved in the media.

Dr. Fukushima

·Some issues should be kept discussed next week. I think consensus of us is that we encourage JAXA to keep data and archive system in good condition. And I would make statement about this issue on the final report (Update of products).