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Meeting Minutes
Session: Ocean: OCTS Team, ADEOS-Ocean Biology and
GLI-Ocean Group Joint Workshop
December 7, 1999 (9:10-17:55)
Room: E
Agenda
- Opening
Remarks
, H. Fukushima, T. Saino and M. Kishino -----
ADEOS/OCTS Status Report-----
- Current
Status of the OCTS Project
, H.Kawamura and Y. Kato
- OCTS
Version 4: Algorithms, Calibration and Validation,
M. Shimada, A.
Mukaida and Y. Mitomi
- Evaluation
of OCTS Level-3 Products,
H. Murakami
- Future
Plan to Reprocess OCTS Data,
H. Kawamura and H.
Fukushima ----- Presentations I -----
- Overview
of the SIMBIOS Project
, G. Fargion
- Vicarious
Calibration of OCTS, MOS and POLDER
, B. Franz
- Latest
Results on the Validation of POLDER Ocean Color Products and Comparison
of OCTS and POLDER Products,
P. Deschamps
- Detection
Scheme for Asian Dust Aerosol over Satellite Ocean Color Data,
H.
Fukushima and M. Toratani
- Results
on the Detection and Correction of Absorbing Aerosols for Ocean Color
Using POLDER Data,
P. Deschamps
- Variability
of Chlorophyll and CDOM Concentration in the California Current
, B.
Greg Mitchell and M. Kahru
- Variations
in Algal Biomass and Primary Production in the Mediterranean Basin:
First Results from OCTS, POLDER and SeaWiFS Observations,
A.
Bricaud, E. Bose, D. Antoine and A. Morel -----Presentations
II-----
- Inverse
Modeling of Radiance Reflectances for Deriving SPM Concentrations in
Coastal Waters from OCTS Data,
R. Doerffer, H. Schiller and M.
Kishino
- Comparison
of Remotely-Senses Ocean Colour Data with Shipborne Observations of
Biophysical Parameters,
A. Jolly, M. Srokosz, P. Cipollini and H.
Snaith
- Operational
Ocean Colour Processing for the Assessment of Water Quality along the
European Coasts,
N. Hoepffiner, A. Dowell and P. Schlittenhardt
- OTCS-Derived
Chlorophyll-a Concentration and Oceanic Structure in the Kuroshio
Frontal region Off the ShoreJoban/Kashima Coast of Japan,
K.
Yokouchi, K. Takeshi, I. Matsumoto, G. Fujiwara, H. Kawamura and K.
Okuda
- Interannual
Variability in the Optical Characteristics of the Equatorial Pacific:
Consequences for the Upper Ocean Heat Budget,
M. Lewis and I.
Asanuma.
- Phytoplankton
Bloom Off the Lombok Strait Observed by OCTS and SeaWiFS,
I.
Asanuma, K. Matsumoto, T. Kawano and M. Lewis
- Estimation
of Primary Production with OCTS Data, J. Ishizaka, T. Kameda and H.
Murakami
- Evaluation
of Regional and Temporal Variabilities of Primary Productivity in the
Sub-Arctic and Arctic North Pacific Ocean using ADEOS/OCTS,
Sei-ichi
Saito and K. Sasaoka -----Presentations III-----
- Seasonal
Changes in OCTS-Chlorophyll Concentrations in the Atlantic in relation
to Mixed Layer Depth,
J. Yoder
- Observations
of Rossby Waves in Global Ocean Colour Datasets,
P. Cipollini, P.
Challenor, and S. Raffaglio
- Validation
of Chlorophyll-a Concentration in the Southern Ocean from OCTS and
SeaWiFS Data,
T. Hirawake and M. Fukuchi
- OCTS-Derived
Phytoplankton Pigment Distribution in Antarctic Ocean during Austral
Spring,
K. Mahapatra, Y. Okada and S. Matsumura
- Seasonal
Variation of Chlorophyll-a in the Gulf of Thailand Using ADEOS/OCTS
Data,
A. Siripong
- Variability
of the Biological and Physical Processes in the Ocean by ADEOS/OCTS and
NSCAT Data During November 1996 to June 1997
, A. Siripong
- Application
of Satellite ADEOS /OCTS Japanese Fisheries,
H. Tameishi, K.
Saito, K. Takahashi and H. Nakasono
- Sea
Surface Temperature from Multi-Sensor Data in Relation to Fish
Forecasting,
S.B. Mansor, K. Jusoff and M. I. Mohamed
- Numerical
Simulation of Northward Migration of Spring Bloom in the Japan Sea,
T. Yanagi Chair Persons: Dr. Kawamura (9:10-10:15), Dr.
Fukushima (10:30-12:05) Dr. Saino (13:30-15:20) and Dr. Asanuma
(16:00-17:55)
1. Opening Remarks: Agenda of the Day
Summary of Presentations and Major
Discussions Back
to index
2. Current Status of the OCTS Project Presented by Dr.
Kawamura
- Dr. Kawamura presented the current status of the OCTS project. His
presentation included the organization of the project team, current
status, an overview of the instruments and so forth. JAXA is developing
I-Lac and MEAS so that the satellite data can be processed from personal
computers.
Questions and Answers Q: Is
the Coastal Program new in Japan, and do you plan to continue it after the
closure of OCTS mission? (Roland Doerffer/ GKSS Germany) A: Yes,
except the OCTS River Project, which is only conducted in
Asia.
Back
to index
3. OCTS Calibration and ValidationPresented by Dr.
Shimada (Cal) and Mr. Akira Mukaida of RESTEC (Val)
- Dr. Shimada explained OCTS version history and its change of
contents. CAL factor information can be obtained from EORC web sites.
The summary of Version 4 product will be distributed at the end of the
session.
- Mr.Mukaida explained the Version 4 validations for nLw, Chl-a and
SST. NLw and Chl-a demonstrated improvement for high concentration, but
SST has no changes since Version 3.
Questions and
Answers Q: Do you have any problem with negative
water-leaving radiance? (Dr. Janet W. Campbell, University of New
Hampshire) A: Yes, we do. (Dr.Fukushima, Tokai
University) Q: Binning algorithm for vegetation index was only
for the vegetation index or not? (Campbell) A: It's only for
vegetation index and not for other oceans color. Dr.Fukushima
Back
to index
4. Evaluation of OCTS Level-3 ProductsPresented by Dr.
Murakami
- Dr. Murakami discussed the changes that occurred through the
updating of Version 3 to 4. As for the validation of Chl-a, Chl-a global
data generally agrees with the ground observation data except for some
areas such as coastal regions. In global comparison with SeaWiFS data,
Chl-a, nLw565 and 555 are usually in positive correlation. In long-term,
nLw seems to decrease through the observation period. He remarked that
more analysis on VNI and TI calibrations is necessary.
Questions and Answers Q: Do you have
plans for a Southern Ocean region algorithm for OCTS? (Dr. Greg
Mitchell) A: Yes. Q: What is the time schedule for
Version 5.0? (Mitchell) A: JAXA is currently working on it and
will release it in the near future.
- Dr. Bryan Franz of NASA commented that the SIMBIOS project does not
observe the decreasing trends like SeaWiFS does.
Back
to index
5. Future Plan to Reprocess OCTS Data Presented by Dr.
Kawamura and Dr. Fukushima
- Dr. Kawamura gave an overview on the characteristics of JAXA Ocean
Observation System (NOOS). Dr. Fukushima explained the issues of concern
regarding OCTS Version 4 products and algorithm. He proposed algorithm
updates.
Questions and Answers Q: What
time scale do you have in mind for Version 5 processing and Asian Water?
(Dr. Greg Mitchell, USCD/SIO) A: JAXA Archive will finish soon,
and then, Dr. Fukushima will work on Version 5. Version 5 will start next
fiscal year, maybe in April. For Global one, it will take longer. (Dr.
Kawamura)
Back
to index
Presentations I
6. Overview of the SIMBIOS Project Presented by Dr. G.
Fargion, Assistant Project Manager of SIMBIOS Project
- Dr. Fargion provided general information on the SIMBIOS project. The
presentation included the background, objectives, organization
activities, and various NASA support available to the SIMBIOS PIs. Dr.
Fargon emphasized that the next due date for the presentation is due on
January 30, 2000. The contact information is listed on the slide.
Questions and Answers None
Back
to index
7. Vicarious Calibrations of OCTS, MOS and POLDER
Presented by Dr. B. Franz
- Dr. Franz summarized the various calibrations of OCTS, MOS and
POLDER. He provided thorough explanations on the SeaWiFS-MOS-OCTS-POLDER
intercalibration system and the vicarious calibration of each
instrument.
Questions and
Answers None
Back
to index
8. Latest Results on the Validation of POLDER Ocean Color Products
and Comparison of OCTS and POLDER Presented by Dr. P.
Deschamps
- Dr. Deschamps gave a presentation on his research on the above
topic. He showed a comparison of OCTS V4 and POLDER V15.10 products. He
also compared OCTS & POLDER vs. In-Situ Measurements of Pigment
Concentration C Level 3 data.
Back
to index
9. Detection Scheme for Asian Dust Aerosol over Satellite Ocean
Color Data Presented by Dr. Fukushima and Dr. Toratani
- Dr. Fukushima and Dr. Toratani gave a summary of the above research
subject. Dr. Fukushima gave an overview of the study. His discussion
included the definition of dust index, and showed dust index images from
SeaWiFS.
- Dr. Toratani showed OCTS dust index images in comparison with TODR
dust index images. He concluded that the spatial distribution of
empirical dust index showed agreement with observation of meteorological
stations and lidar stations, TODR. aerosol index and dust transport
model.
Questions and Answers Q: ( Dr.
Franz) Is " Dust index " good representation for dust from the physical
meaning ? A: We will test more and improve "Dust index"
Back
to index
10. Results on the Detection and Correction of Absorbing Aerosols
for Ocean Color using POLDER Data Presented by Dr.
Deschamps
- Dr. Deschamps summarized the result of the above research. He used
the color satellite images of North Africa and Mediterranean Sea as a
sample.
Back
to index
11. Variability of Chlorophyll and CDOM Concentration in the
California Current Presented by Dr. Greg Mitchell
- Dr. Mitchell gave a summary of the above research subject. The
conclusion of the research shows the satellite time-series for Chl and
CDOM from 11/98 to present, large variance at all time scales from 1
week-interannual, seasonal trends are significant for some sub-regions,
large El-Nino signal, and the tendency for increasing CDOM and Chl over
last 3 years.
Questions and Answers Q: (
Dr. Janet Campbell ) You used water-leaving radiance to derive Chl and
CDOM? A: Yes. Q: How consistent is OCTS
water-leaving radiance compared to SeaWiFS? (Campbell) A: Pretty
consistent. We feel reasonably confident in 455 and 445.
(Mitchell)
Back
to index
12. Variations in Algal Biomass and Primary Production in the
Mediterranean Basin: First Results from OCTS POLDER and
SeaWiFS Observations. Presented by Dr. Annick Bricaud
- Dr. Bricaud presented the objectives of the present study, and how
primary production was computed and mean primary production among
different data sets. She also explained issues related to an estimate of
new production and presented a modified approach. However, she noted
that the present results are still preliminary. She is waiting for the
improved versions of level 3 products. She discovered that OCTS and
SeaWiFS Chl products are in relatively consistent agreement except in
oligotrophic waters where SeaWiFS values might be overestimated.
Questions and Answers Q: How large is
your production relationship? Do you only use constant per production?
(Doerffer) A: Yes.
Back
to index
Presentations II
13. Inverse Modeling of Radiance Reflectances for Deriving SPM
Concentrations in Coastal Waters from OCTS Data.Presented by
Dr. Ronald Doerffer, GKSS Research Center
- Dr. Doerffer gave a summary on the above research. He discussed the
atmospheric correction over turbid water using neural network, and
presented the preparation and operation of NN (Neutral Network)
Atmospheric Correction Algorithm. In conclusion, the test data indicated
that correction is possible even over turbid river plumes.
Questions and Answers None
Back
to index
14. Comparison of Remotely-Sensed Ocean Color Data with Shipborne
Observations of Biophysical ParametersPresented by Dr. Anne
Jolly, Southampton Oceanography Center
- Dr. Jolly gave a presentation on the description of RRS Discovery
Cruise 227m its objectives, the survey results and analysis.
Questions and Answers Q: How would you
use the satellite data to determine the biomass of zooplankton?
(Campbell) A: We look whether the features are evaded throughout
the region and also initialize Herbert and Hopps model.
Back
to index
15. Operational Ocean Color Processing for the Assessment of Water
Quality along the European Coasts Presented by Dr. P.
Schlittenhardt, Space Applications Institute
- Dr. Schlittenhardt gave a thorough overview of ocean color data
processing at Marine Environment Unit.
Questions and
Answers None
Back
to index
16. OCTS-Derived Chlorophyll-a Concentration and Oceanic Structure
in the Kuroshio Frontal Region off the Joban/Kashima Coast of Japan
Presented by Dr. Yokouchi
- Dr. Yokouchi summarized his study on OCTS-derived Chl-a
concentration and oceanic structure in the Kuroshio frontal region off
the coast of Japan.
Questions and
Answers None
Back
to index
17. Interannual Variability in the Optical Characteristics of the
Equatorial Pacific:Consequences for the Upper Ocean Heat Budget
Presented by M. Lewis of Dalhousie University
- Dr. Lewis summarized his research on the above topic. The result of
the research shows an algorithm largely developed for more eutrophic
environments, do work in the "celar" eutrophic regions.
Back
to index
18. Phytoplankton Bloom off the Lombok Strait Observed by OCTS and
SeaWiFS Presented by Dr. Kawano
- Dr. Kawano presented a summary of the above research. He discovered
that seasonal wind maintains a distribution of Phytoplankton. He also
noted that irregular wind for some period determines a distribution of
Phytoplankton. Also, the runoff from the Lombok strait scatters in the
surface layer withholding a Phytoplankton boom.
Questions
and Answers None
Back
to index
19. Estimation of Primary Production with OCTS
DataPresented by Joji Ishizaka
- Dr. Ishizaka summarized the estimation of the primary production
with OCTS data.
Questions and Answers Q:
How accurate do you need the temperature? A: We use OCTS
temperature for OCTS processing, and Reynold temperature for SeaWiFS
Processing. OCTS is a bit underestimated than SeaWiFS The higher
Chlorophyll region is more important.
Back
to index
20. Evaluation of Regional and Temporal Variabilities of the
Primary Productivity in the Sub-Arctic and Arctic North Pacific Ocean
Using ADEOS/OCTS Presented by Dr Sei-ichi Saito Dr.
Sei-ichi Saito gave a summarized presentation on his research, which
focused on the Fukuoka Bay Area and Off Sanriku Area. The following are
some of his findings.
- Spring Bloom in Fukuoka bay and adjacent waters in 97 were observed
using OCTS/AVHRR and synoptic ship observations.
- It was also in and around Kuroshio warm core rings in 1997 and
observed via the same method.
Questions and
Answers None
Back
to index
Presentations III
- Dr.Lewis invited participants to OCEAN OPTICS XV in October 2000 in
Monaco.
21. Seasonal Changes in OTCS-Chlorophyll Concentrations in the
Atlantic in Relation to Mixed Layer DepthPresented by Dr. J.
Yoder
- Dr. Yoder presented the summary of his research on the above topic.
He remarked that the wind deters and Chl modes are related in the
Atlantic, OCTS and POLDER show seasonal cycle with some inter-sensor
difference and the seasonal Chl max co-occurs
Questions
and Answers None
Back
to index
22. Observations of Rossby Waves in Global Ocean Color Datasets
Presented by Dr. Ann Jolly on behalf of Dr. Paul Cipollini
and others
- According to Dr. Cipollini's research, Rossby Waves are very
important phenomena in ocean dynamics and climate studies.
Questions and Answers Q: Why are the
detections by OCTS and SeaWiFS different? (Dr. Yanagi, University of
Kyushu) A: I don't know. Comments from Dr. Kawamura: OCTS
period is very short so maybe it is providing some error in estimating a
long-term phenomenon.
Back
to index
23. Validation of Chlorophyll-a concentration in the Southern Ocean
from OCTS and SeaWiFS Data Presented by Dr. Hirawake
- Dr. Hirawake summarized his research on the validation of Chl-a
concentration in the Southern Ocean from OCTS and SeaWiFS data. He
pointed out the problem in the ocean color remote sensing. He analyzed
comparisons between Ocean Color Chl-a and in situ Chl-a, and between
ocean color sensors.
Questions and
Answers Q: Did you calculate the Chlorophyll just by
applying the conversion of percentage differences or calculate by
algorithms? (Mitchell) A: Bio-optical is the standard algorithm.
Dr. Mitchell and Dr. Hirawake will further discuss this matter
later.
Back
to index
24. OCTS-derived Phytoplankton Pigment Distribution in Antarctic
Ocean during Austral SpringPresented by Dr. Mahapatra
- Dr. Mahapatra explained his research on the above topic.
Questions and Answers None
Back
to index
25. Seasonal Variation of Chl-a in the Gulf of Thailand Using
ADEOS-OCTS DataPresented by Dr. Siripong of Chulalongkorn
University
- Dr. Siripong presented her research on the above topic. The study
focuses on North East and SouthWest Monsoon Seasons. This study will
benefit the local fisheries.
Back
to index
26. Variability of the Biological and Physical Processes in the
Ocean by ADEOS/OCTS and NSCAT Data During November 96 to June
97Presented by Dr. Siripong Questions and
Answers None
Back
to index
27. Application of Satellite ADEOS/OCTS Japanese Fisheries
Presented by Dr. Tameishi, Japan Fisheries Information
Center
- Dr. Tameishi summarized his study on the application of satellite
ADEOS/OCTS to Japanese fisheries. He finds that the warm streamer can
help detect sardine fishing schools because they migrate through the
warm streamers. The warm streamer also helps detect mackerels and other
fish.
Questions and Answers Q: You
talked about food chain and simultaneous occurrence of Phytoplankton
bloom, zooplankton and fishes. Didn't you find any time lag between them?
(Dr. Mahapatra) A: I observed only once at Research Lab. Sardine
schools appear in this area a few days after the blooming of plankton.
(There seems to be a time lag ) But I don't know to be exact.
Back
to index
28. Sea Surface Temperature from Multi-Sensor Data in Relation to
Fish Forecasting Presented by Dr. Mansor from University
Putra
- Dr. Mansor discussed the potential of using satellite images for
fishing. He suggests development of Internet-friendly applications so
that the satellite images are more easily
available.
Questions and Answers Q: In
your study area, what's the maximum temperature area? (variation?)
(Mahapatra) A: There is a very low variation. I am not going to
specify level yet. We have to consider other parameters before going into
such a study.
Back
to index
29. Numerical Simulation of Northward Migration of Speing Bloom in
the Japan Sea Presented by Dr.Yanagi, University of
Kyushu
- Dr. Yanagi presented his research results on the above topic. He
will start international and interdisciplinary studies in 2001 on
variability of ocean environment. He invites interested scholars to
participate.
Questions and Answers Q: Did
you consider the possibility of the sinking of Phytoplankton? (Dr.
Saino) A: Yes, it is included in my model.
End of Session
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