SOLAS-Japan March 2007
[1]

The W-PASS (Western Pacific Air-Sea interaction Study) project 2006-2010– Linkages in biogeochemical cycles between surface ocean and lower atmosphere–
PI: Mitsuo UEMATSU (University of Tokyo, uematsu@ori.u-tokyo.ac.jp)

Climate and environmental change will have significant impacts on biogeochemical cycling in the ocean,on atmospheric chemistry, and on chemical exchange between the ocean and atmosphere.

Theexchanges include atmospheric deposition of nutrients and metals that control marine biological activity
and hence the ocean carbon uptake, and emissions of trace gases and particles from the ocean in view of
their importance in atmospheric chemistry and climate processes.
Our goal of the W-PASS (Western Pacific Air-Sea interaction Study) project, which has been newly
funded for 5 years as a part of SOLAS-Japan activity in the summer of 2006, is to achieve quantitative
understanding of the key biogeochemical interactions and feedbacks between the ocean and atmosphere.
We aim to resolve this linkage through field observations studies mainly using research vessels over thewestern Pacific. Numerical modeling studies are required for systematic evaluation and quantitative
assessment. Our objectives of W-PASS are:1) Quantify the transport of natural and anthropogenic materials from the Asian continent to the western
Pacific which contributes to primary production in the marginal and remote regions.
2) Determine the response of marine ecological systems to changes in atmospheric composition over thewestern Pacific.
3) Investigate the production and emissions of marine biogenic gases that might lead to changes inatmospheric composition, especially in subtropical and subarctic regions of the western Pacific.
4) Evaluate the contribution of marine biogenic gases to global climate change.
5) Provide basic knowledge of the interaction between global climate change, marine resources, andoceanic processes to policy makers.

A01 Dynamics of Atmospheric Composition
A01-1 Anthropogenic impact on atmospheric trace species and their effects to the air-sea chemicalinteraction
Long-term continuous monitoring of nitrogeneous species both in gaseous and particulate phases withother air pollutants at a remote site, Cape Hedo, in Okinawa Islands. Quantifying the annual trend and theseasonal variability of atmospheric nitrogen nutrient input to the Western Pacific Ocean. Detecting thepotential impact of the economic growth in the East-Asian Continent on the air-sea chemical interaction
through the increase in the nitrogen input.
Simultaneous, comprehensive and high time-resolution continuous monitoring of total NOy andnitrogeneous deposition species, particulate NO3－ and NH4＋ as well as gaseous HNO3 and NH3.

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NIES Atmospheric and Aerosol Monitoring Station at Cape Hedo, Okinawa, is providing collaborative
facilities for year-round continuous monitoring of geophysical and chemical quantities related to theglobal environment, and is assigned as the major site in Japan for the international ABC Program.
(Hiroshi Bandow)

A01-2 A study on the production and emission of marine-derived volatile halocarbons
Measurements of marine biogenic gases in the air and surface seawater. Studies on the mechanism andcontrolling factors of the marine VOCs production based on cultivation of microalgae and molecularbiological technique.
(Yoko Yokouchi)

A01-3 Atmospheric deposition of particulate trace metals and organic carbon to the ocean andproduction processes of marine aerosols
Quantify the transport and deposition of particulate trace metals and organic carbon from the Asian
continent to the western North Pacific. Investigate the production and emission of biogenic gases and thegas-to-particle processes especially in subtropical and subarctic regions of the western Pacific.
Looking at nano particles by Aerosol Time-of-Flight Mass Spectrometer(ATOFMS) on shipboard.
Looking for continental biomarkers associated with soil microbial activities using a saponification on
the aerosol samples, i.e., omega-hydroxy carboxylic acids, which are produced in soils by microbial
omega-oxidation of fatty acids.
(Mitsuo Uematsu)

A02 Variability of Gass Exchange at the Air-Sea Interface
A02-4 Trace gas geochemistry in ocean surface
Quantify trace organic compounds in ocean using PTR-MS. Stable carbon isotopic compositions oftrace non-methane hydrocarobns (NMHCs) in ocean. Procution of methane in oxic seawater using dual
(carbon and hydrogen) isotope tracers. High sesitivity tracer assay for N2 fixation in ocean. Nitrate andnitrous oxide geochemisty using the triple oxygen isotopic compositions.
We introdeced new isotope ratio mass spectrometer for this project.
(Urumu Tsunogai)

A02-5 Development of direct eddy-covariance system for the air-sea trace gas flux measurements
For the precise evaluation of air-sea trace gas fluxes, eddy-covariance method is considered as the
direct and most reliable technique. In the present proiject, CO2 and DMS are the possible candidates forthe application of the eddy-covariance method. Measurement system of these trace gas density
fluctuations and ship motion correction for the wind velocities are are organized in the project.

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(Osamu Tsukamoto)A02-6 Long-term changes of green house gases in the ocean and it feedback effect on climate.
We have a plan to investigate oceanic parameter as green house gases with the physical-biogeochemical observations in the next five years. It focuses on the North Pacific subpolar/subtropicalregion in order to get a quantification of feed back parameters.
(Yutaka W. Watanabe)

A03 Dynamics of Marine Ecosystem
A03-7 Bioavailability and biogeochemical process of trace metals in the surface ocean
To investigate the speciation and bioavailability of trace metals supplied from the atmosphere to theocean surface, we will study the dissolution rate of trace metals from the atmospheric mineral dust andtheir speciation in seawater.
(Shigenobu Takeda)

A03-8 Dynamics of biophilic elements and microbial processes in the surface ocean
The detailed distributions of different forms of biophilic elements (C, N, P, Si) and their interaction
with microbial processes in the surface water column will be elucidated in terms of biogeochemical flux
between the atmosphere and the surface ocean.
(Hiroshi Ogawa)A03-9 Ecosystem response to the dust input in the western Pacific, and its feedback
We will examine the ecosystem responses to the dust (iron) input in the subarctic and subtropical
Pacific with bottle incubation. We also reanalize the data from the mesoscale iron enrichment experiments(SEEDS and SEEDS II). We will also investigate the effects of typhoon as a mechanim to enhance theprimary production in the subtropical Pacific.
(Atsushi Tsuda)

A03-10 Mechanism on abrupt change of primary productivity by air-sea interaction using

satellite remote sensing and numerical modelingTo examine abrupt change of primary productivity, we will generate satellite data set on ocean colorand sea surface temperature before and after typhoon passing around Japan. We will develop a numericalmodel of typhoon which can simulate a magnitude of mixing and upwelling in sub-surface layer andexamine the relationship between moving speed of typhoon and magnitude of mixing and upwelling.
(Sei-Ichi Saitoh)

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A04 Modeling of Interaction between Ocean and AtmosphereA04-11 Responses of marine ecosystem to weather disturbances of synoptic scale
In this project, we will synthesis results obtained from the other observation project inJapan-IGBP/SOLAS activities. Especially, we will focus responses of marine ecosystem to the weather
disturbances such as Typhoon and strong extratropical cyclone, which deepening the mixed layer andshutdown solar radiation during few days to a week. We will also investigate responses of marine
ecosystem to aeolian dust using ecosystem model representing iron cycle processes.
(Yasuhiro Yamanaka)

Field Observations in 2007
A01-1

2007Winter(ca. 2 weeks during Nov-Dec. 2007, period: not determined yet.) Aircraft observation
campaign for aerosols over the East China Sea collaborated with a ground-base intensive
observation at Cape Hedo, partly funded by Global Environmental Research Fund(MOE, Japan) andby Asian Environment Research Program, Core Project 1(NIES).
A01-2(1) Spring 2007 (KT-07-7:16-29 April) -- Measurements of VOCs in the atmosphere and seawater(2) High frequency measurements of methyl halides and DMS in the atmosphere at Hateruma Island
and Cape Ochiishi
A01-3(1) Spring 2007 (KT-07-7:16-29 April): BLOCKS (Bloom Caused by Kosa Study) in the midlatitude zone of the western North Pacific by R/V Tansei Maru
(2) Summer 2007 (MR07-04): A longitudinal transect cruise from Japan to the North America along
47˚N by R/V Mirai
A02-5(1) R/V MIRAI cruise: MR07-03(June,2007) equatorial Western Pacific(2) R/V MIRAI cruise: MR07-06(Oct-Nov,2007) Western PacificA03-7(1) Surface water clean sampling test using a newly developed "Fish". R.V. Hakuho-maru, July 24-29,
2007(2) Trace metal cycles in the surface layer around Kuroshio Current. R.V. Tansei-maru, Oct 21-25.
A03-9
R.V. Hakuho-maru KH-7-3 cruise, Subtropical Pacific (Argo float deployment, bottle incubation).
A03-10R.V. Oshoro-maru IPY collaborative research cruises in Arctic Sea and Bering Sea, July 1-August 28,
2007.

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Publications
A01-1
T. Kameda, K. Inazu, Y. Hisamatsu, N. Takenaka, H. Bandow, “Isomer distribution of nitro- triphenylenesin airborne particles, diesel exhaust particles, and the products of gas-phase radical-initiated nitrationof triphenylene”, Atmos. Environ., 40, 7742-7751 (2006).
Y. Sadanaga, S. Kondo, K. Hashimoto, and Y. Kajii, “Measurement of the Rate Coefficient for the OH +NO2 Reaction: Its Humidity Dependence”, Chem. Phys. Lett., 419, 474-478 (2006).
W. Wang, H. Liu, X. Yue, H. Li, J. Chen, L Ren, D. Tang, S. Hatakeyama, and A. Takami, “Study on
acidity and acidic buffering capacity of particulate matter over Chinese eastern coastal areas in spring”,
J. Geophys. Res., 111, D18207, doi:10.1029/2005JD006753(2005).
K. Arao, M. Nishikawa, S. Hatakeyama, A. Takami, S. Matsuyama, and T. Hayasaka, “AtmosophericTurbid Condition due to Fine Particles in Recent Years at Nagasaki, Japan”, J. Environ. Studies,
Nagasaki Univ., 9 23-30 (2006).
W. Wang, S. Hatakeyama, Z. F. Wang, H. J. Liu, A. Takami, H. Li, J. H. Chen, X. Yue, L. H. Ren, H. F.
Zheng, and D. G. Tang, “Intensive aircraft-based measurements of air pollutants over the eastern coastof China in Spring 2002 (I) - the temporal and spatial distribution of sulfur and its budgets”. Water,
Air and Soil Pollut., in press.
Chen, J. H., Z. F. Wang, S. Hatakeyama, W. Wang, A. Takami, H. Li, H. J. Liu, Z. S. Wang, X. Yue, L. Lu,
H. M. Su and D. G. Tang, “Intensive aircraft-based measurements of air pollutants over the eastern
coast of China in Spring 2002 (II) – the NOx distributions and ozone modeling studies”, Water, Air
and Soil Pollut., in press.
A01-2
T. Saito, Y. Yokouchi, S. Aoki, T. Nakazawa, Y. Fujii, O. Watanabe, A method for determination of
methyl chloride concentration in air trapped in ice cores, Chemosphere, 63, 1209-1213 (2006)
Y. Yokouchi, S. Taguchi, T. Saito, Y. Tohjima, H. Tanimoto, and H. Mukai, High frequency
measurements of HFCs at a remote site in East Asia and their implications for Chinese emissions,Geophys. Res. Letters, L21814 (2006)
T. Saito, Y. Yokouchi , S. Aoki , T. Nakazawa , Y. Fujii , O. Watanabe, Ice-core record of methyl
chloride over the last glacial Holocene climate change, Geophys. Res. Letters, 34, L03801, (2007)
Z. Kamenarska, T. Taniguchi, N. Ohsawa, M. Hiraoka, N. Itoh, Phytochemistry, A
vanadium-dependent bromoperoxidase in the marine red alga Kappaphycus alvarezii (Doty) Doty
displays clear substrate specificity (in press)
A01-3
Nakamura, T., Ogawa, H., Kumar, D. M., and Uematsu, M., “Contribution of water soluble organic
nitrogen to total nitrogen in marine aerosols over the East China Sea and western North Pacific”
Atmospheric Environment, 40, 7259–7264 (2006).
Ooki, A., Uematsu, M., and Noriki, S., “Size-resolved sulfate and ammonium measurements in marine
boundary layer over the North and South Pacific” Atmospheric Environment, 41, 81-91 (2006).
Prabir, K. P, J., Moore, K., Mahowald, M., Uematsu, M., Doney, S.C. and Nakazawa, T., “Exploring thesensitivity of interannual basin-scale air-sea CO2 fluxes to variability in atmospheric dust deposition
using ocean carbon cycle models and atmospheric CO2 inversions” Journal of Geophysical Research,
in press, (2007).
Inomata, Y., Hayashi, M., Osada, K., Iwasaka, Y., Spatial distributions of volatile sulfur compounds insurface seawater and overlying atmosphere in the northwestern Pacific Ocean, eastern Indian Ocean,and Southern Ocean, Global Biogeochemical Cycle, 20, doi:10.1029/2005GB002518, June, 2006.

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Hara, K., Y. Iwasaka, M. Wada, T. Ihara, H. Shiba, K. Osada, T. Yamanouchi, Aerosol constituents andtheir spatial distribution in the free troposphere of coastal Antarctic regions, J. Geophys. Res., 111,
doi:10.1029/2005JD006591, August, 2006.
Li, Jingmin and K. Osada, Water-insoluble particles in spring snow at Mt. Tateyama, Japan:
Characteristics of the shape factors and size distribution in relation with their origin and transportation,
J. Meteorol. Soc. Jpn., accepted for publication.
Nishita, C., K. Osada, K. Matsunaga, Y. Iwasaka, Number-size distributions of free tropospheric aerosol
particles at Mt. Norikura, Japan: effects of precipitation and air-mass transportation pathways, J.
Geophys. Res., accepted for publication.
Osada, K., K. Hara, M. Wada, T. Yamanouchi, K. Matsunaga, Lower Tropospheric Vertical Distributionof Aerosol Particles over Syowa Station, Antarctica from Spring to Summer in 2004, Polar Meteorol.
Glaciol., 20, 16-27, 2006.
James Bendle, Kimitaka Kawamura and Koji Yamazaki, Seasonal changes in stable carbon isotopic
composition of n-alkanes in the marine aerosols from the western North Pacific: Implications for thesource and atmospheric transport, Geochimica et Cosmochimica Acta, 70, 13-26, 2006.
Osamu Seki, Chisato Yoshikawa, Takeshi Nakatsuka, Kimitaka Kawamura and Masaaki Wakatsuchi,
Fluxes, source and transport of organic matter in the western Sea of Okhotsk: stable carbon isotopic
ratios of n-alkanes and total organic carbon, Deep-Sea Research I, 53, 253-270, 2006.
H. Wang, K. Kawamura, and K. Yamazaki, Water-soluble dicarboxylic acids, ketoacids and dicarbonyls
in the atmosphere over the Southern Ocean and western North Pacific, J. Atmos. Chem., 53, 43-61,
2006.
H. Wang and K. Kawamura, Stable carbon isotopic composition of low-molecular-weight dicarboxylic
acids and ketoacids in remote marine aerosols, J. Geophys. Res. 111, D07304, doi:
10.1029/2005JD006466, 2006.
K. F. Ho, S. C. Lee, J. J. Cao, K. Kawamura, T. Watanabe, Y. Cheng, J. C. Chow, Dicarboxylic acids,
ketocarboxylic acids and dicarbonyls in the urban roadside area of Hong Kong, Atmos. Environ., 40,
3030-3040, 2006.
Teruyo Ieda, Yasuyuki Kitamori, Michihiro Mochida, Ryuichi Hirata, Takashi Hirano, Kou Inukai,
Yasumi Fujinuma and Kimitaka Kawamura, Diurnal variations and vertical gradients of biogenic
volatile and semi-volatile organic compounds at the Tomakomai larch forest station in Japan. Tellus B,
59B, 177-186, 2006.
S. Fuzzi, M. O. Andreae, B. J. Huebert, M. Kulmala, T. C. Bond, M. Boy, S. J. Doherty, A. Guenther, M.
Kanadidou, K. Kawamura, K.-V. Kerminen, U. Lohmann, L. M. Russell, and U. Poschl, Criticalassessment of the current state of scientific knowledge, terminology, and research needs concerning
the role of organic aerosols in the atmosphere, climate, and global change, Atmos. Chem. Phys., 6,
2017-2038, 2006.
Guhei Wang, Kimitaka Kawamura, Shuncheng Lee, Kinfai Ho, and Junji Cao, Molecular, seasonal andspatial distribution of organic aerosols from fourteen Chinese cities. Environ. Sci. and Technol., 40,
4619-4625, 2006.
Marc Tedetti, Kimitaka Kawamura, Bruno Charriere, Nicolas Chevalier, and Richard Sempéré,
Determination of low molecular weight dicarboxylic acids in seawater samples, Anal. Chem., 78,
6012-6018, 2006.
Haobo Wang, Kimitaka Kawamura and David Shooter, Wintertime organic aerosols in Christchurch andAuckland, New Zealand: Contributions of residential wood and coal burning and petroleum utilization.
Environ. Sci. and Technol., 40, 5257-5262, 2006.

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Haobo Wang, Kimitaka Kawamura, K. F. Ho and S. C. Lee, Low Molecular Weight Dicarboxylic Acids,
Ketoacids and Dicarbonyls in the Fine Particles from a Roadway Tunnel: Significant Secondary
Production from the Precursors in Vehicular Emissions. Environ. Sci. and Technol., 40, 6255-6260,
2006.
Gehui Wang, Kimitaka Kawamura, Tomomi Watanabe, Shuncheng Lee, Kinfai Ho, and Junji Cao, Highloadings and source strengths of organic aerosols in China. Geophys. Res. Lett., 33, L22801,
doi:10.1029/2006GL027624, 2006.
Michihiro Mochida, Mikinori Kuwata, Takuma Miyakawa, Nobuyuki Takegawa, Kimitaka Kawamura
and Yutaka Kondo, Relationship between hygroscopicity and cloud condensation nuclei activity for
urban aerosols in Tokyo. J. Geophys. Res., 111, D23204, doi: 10.1029/2005JD006980, 2006.
Miyazaki, Y., Y. Kondo, N. Takegawa, Y. Komazaki, M. Fukuda, K. Kawamura, M. Mochida, K.
Okuzawa, and R. J. Weber (2006), Time-resolved measurements of water-soluble organic carbon inTokyo. J. Geophys. Res., 111, D23206, doi:10.1029/2006JD007125.
Gehui Wang, Kimitaka Kawamura, Xin Zhao, Qiuge Li, Zhaoxia Dai, and Hongyun Niu, Identification,
abundance and seasonal variation of anthropogenic organic aerosols from a mega-city in China.
Atmospheric Environment, 41, 407-416, 2007.
Sou N. Matsunaga, Alex B. Guenther, Yusuke Izawa, Christine Wiedinmyer, Jim P. Greenberg andKimitaka Kawamura, Importance of wet precipitation as a removal and transport process foratmospheric water soluble carbonyls. Atmos. Environ., 41, 790-796, 2007.
Murosaki, M., Fujita, S., Takahashi, A., Hayami, H., and Miura, K., “Measurements of ozone vertical
distribution at Mt. Fuji using a passive sampler” J. Jpn. Soc. Atmos. Environ., 41(6), 347-354 (2006).
A02-4
Kim, Y.-S., N. Tanaka, F. Nakagawa, U. Tsunogai, M. Ueyama, Y. Harazono, Assessment of winter fluxesof CO2 and CH4 in boreal forest soils of central Alaska estimated by the profile method and thechamber method: a diagnosis of methane emission and implications for the regional carbon budget.
Tellus B, in press.
Kim, J.-H., M.-H. Park, U. Tsunogai, T.-J. Cheong, B.-J. Ryu, Y.-J. Lee, H.-C. Han, J.-H. Oh and H.-W.
Chang (2007) Geochemical characterization of the organic matter, pore water constituents and shallow
methane gas in the eastern part of the Ulleung Basin, East Sea (Japan Sea), Island Arc, 16, 93-104.
Oba M., Sakata S. and Tsunogai U. (2006) Polar and neutral isopranyl glycerol ether lipids as biomarkers
of archaea in near-surface sediments from the Nankai Trough. Organic Geochemistry, 37, 1643-1654.
Inagaki, F., M.M.M. Kuypers, U. Tsunogai, J. Ishibashi, K. Nakamura, T. Treude, S. Ohkubo, M.
Nakaseama, K. Gena, H. Chiba, H. Hirayama, T. Nunoura, K. Takai, B.B. J_rgensen, K. Horikoshi
and A. Boetius (2006) Microbial community in a sediment-hosted CO2 lake of the southern Okinawa
Trough hydrothermal system. Proc. Nat. Acad. Sci. U.S.A., 103, 38, 14,164-14,169.
Arakawa, S., T. Sato, R. Sato, J. Zhang, T. Gamo, U. Tsunogai, A. Hirota, Y. Yoshida, R.
Usami, F. Inagaki and C. Kato (2006) Molecular phylogenetic and chemical analyses of the
microbial mats in deep-sea cold seep sediments at the northeastern Japan Sea. Extremophiles, 10,311-319.
Gamo, T., J. Ishibashi, U. Tsunogai, K. Okamura, H. Chiba (2006) Unique geochemistry of submarinehydrothermal fluids from arc-backarc settings of the western Pacific. In: Back-Arc Spreading
Systems: Geological, Biological, Chemical and Physical Interactions (ed by D. Christie), Geophysical
Monograph Serise 166, Americal Geophysical Union, p.147-161.
Toki, T., T. Gamo, and U. Tsunogai (2006) Origins of hydrocarbons at Sagara oil field, Central Japan.
Island Arc, 15, 285-291.
Konno, U., U. Tsunogai, F. Nakagawa, M. Nakaseama, J. Ishibashi, T. Nunoura, K. Nakamura (2006)

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Liquid CO2 venting on seafloor: Yonaguni IV Knoll hydrothermal system, Okinawa Trough. Geophys.
Res. Lett., 33, L16607, doi:10.1029/2006GL026115.
Saegusa, S., U. Tsunogai, F. Nakagawa, and S. Kaneko (2006) Development of a multi-bottle gas-tightfluid sampler WHATS II for Japanese submersibles/ROVs. Geofluids, 6, 234-240.
Nakagawa, T., K. Takai, Y. Suzuki, H. Hirayama, U. Konno, U. Tsunogai and K. Horikoshi (2006)
Geomicrobiological exploration and characterization of a novel deep-sea hydrothermal system at the
TOTO caldera in the Mariana Volcanic Arc. Environ. Microbiol., 8, 37-49.
A02-5
Air-Sea CO2 Flux by Eddy Covariance Technique in the Equatorial Indian Ocean
Fumiyoshi KONDO and Osamu TSUKAMOTO Journal of Oceanography, 2007 (Accepted)
A03-7
Hongo, Y, H. Obata, D.S. Alibo and Y. Nozaki, 2006. Spatial variations of rare earth elements in North
Pacific surface water. Journal of Oceanography, 62: 441-455.
Maruo, M., T. Doi and H. Obata, 2006. Onboard determination of submicromolar nitrate in seawater byanion-exchange chromatography with lithium chloride eluent. Analytical Sciences, 22: 1175-1178.
Obata, H., T. Yoshida, and H. Ogawa, 2006. Determination of picomolar levels of platinum in estuarine
waters: a comparison of cathodic stripping voltammetry and isotope dilution-inductively coupledplasma mass spectrometry. Analytica Chimica Acta, 580, 32-38.
Tazoe, H., H. Obata, H. Amakawa, Y. Nozaki, and T. Gamo, 2007. Precise determination of the cerium
isotopic composition of surface water in the Northwest Pacific Ocean and Tokyo Bay. Marine
Chemistry, 103, 1-14.
Okubo, A., H. Obata, T. Gamo, H. Minami, and M. Yamada, 2007. Scavenging of 230Th in the Sulu Sea.
Deep-Sea Research II, 54, in press.
Obata, H., T. Doi, Y. Hongo, D.S. Alibo, H. Minami, Y. Kato, and M. Maruo, 2007. Manganese,
cerium, and iron in the Philippine, Celebes, and Sulu Seas. Deep-Sea Research II, 54, 38-49.
Hongo, Y., H. Obata, T. Gamo, M. Nakashima, J. Ishibashi, U. Konno, S. Saegusa, S. Ohkubo and U.
Tsunogai. Rare earth elements in the hydrothermal system at Okinawa Trough back-arc basin.
Gaochemical Journal, in press.
Johnson, K.S., E. Boyle, K. Bruland, K. Coale, C. Measures, J. Moffett, A. Aguilar-Islas, K. Barbeau, B.
Bergquist, A. Bowie, K. Buck, Y. Cai, Z. Chase, J. Cullen, T. Doi, V. Elrod, S. Fitzwater, M. Gordon,
A. King, P. Laan, L. Laglera-Baquer, W. Landing, M. Lohan, J. Mendez, A. Milne, H. Obata, L.
Ossiander, J. Plant, G. Sarthou, P. Sedwick, G. Smith, B. Sohst, S. Tanner, S. Van den Berg, J. Wu. The
SAFe Iron Intercomparison Cruise: An International Collaboration. EOS, in press.
S. Takeda, N. Ramaiah, M. Miki, Y. Kondo, Y. Yamaguchi, Y. Arii, F. Gomez, K. Furuya and W.
Takahashi (2007) Biological and chemical characteristics of high-chlorophyll, low-temperature waterobserved near the Sulu Archipelago. Deep-Sea Research II, 54(1-2), 81-102.
Y. Kondo, S. Takeda and K. Furuya (2007) Distribution and speciation of dissolved iron in the Sulu Sea
and its adjacent waters. Deep-Sea Research II, 54(1-2), 60-80.
P.W. Boyd, T. Jickells, C.S. Law, S. Blain, E.A. Boyle, K.O. Buesseler, K.H. Coale, J.J. Cullen, H.J.W. de
Baar, M. Follows, M. Harvey, C. Lancelot, M. Levasseur, R. Pollard, R.B. Rivkin, J. Sarmiento, V.
Schoemann, V. Smetacek, S. Takeda, A. Tsuda, S. Turner, A.J. Watson (2007) Mesoscaleiron-enrichment experiments 1993-2005: synthesis and future directions. Science, 315, 612-617.
S. Takeda, N. Yoshie, P.W. Boyd and Y. Yamanaka (2006) Modeling studies investigating the causes ofpreferential depletion of silicic acid relative to nitrate during SERIES, a mesoscale iron enrichment in
the NE subarctic Pacific. Deep-Sea Research II, 53, 2297-2326.
C.S. Wong, W.K. Johnson, N. Sutherland, J. Nishioka, D.A. Timothy, M. Robert and S. Takeda (2006)

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Iron speciation and dynamics during SERIES, a mesoscale iron enrichment experiment in the NE
Pacific. Deep-Sea Research II, 53, 2075-2094.
H. Saito, A. Tsuda, Y. Nojiri, J. Nishioka, S. Takeda, H. Kiyosawa, I. Kudo, Y. Noiri, T. Ono, Y. Taira, K.
Suzuki, T. Yoshimura and P.W. Boyd (2006) Nutrient and phytoplankton dynamics during thestationary and declining phases of a phytoplankton bloom induced by iron-enrichment in the eastern
subarctic Pacific. Deep-Sea Research II, 53, 2168-2181.
T. Yoshimura, J. Nishioka, H. Saito, S. Takeda, A. Tsuda and M.L. Wells (2007) Distributions ofparticulate and dissolved organic and inorganic phosphorus in North Pacific surface waters. Marine
Chemistry, 103, 112-121.
M. Sato, S. Takeda, K. Furuya (2006) Effects of long-term sample preservation on flow cytometricanalysis of natural populations of pico- and nanophytoplankton. Journal of Oceanography, 62,903-908.
A03-8
Separation of marine bacteria according to buoyant density by use of the density-dependent cell sorting
method. Inoue, K., M. Nishimura, B. B. Nayak and K. Kogure Applied and Environmental
Microbiology in press
A03-9
Saito, H., T. Ota, K. Suzuki, J. Nishioka and A. Tsuda (2006) Role of heterotrophic dinoflagellate
Gyrodinium sp. in the fate of an iron-enrichment induced diatom bloom. Geophysical. Res. Let. 33,
L09602, 10.1029/2005GL025366
Tsuda, A., H. Saito, J. Nishioka, T. Ono, Y. Noiri and I. Kudo (2006) Mesozooplankton response to ironenrichment during the diatom bloom and bloom decline in SERIES (NE Pacific). Deep-Sea Res. II,
53: 2281-2296
Marchetti, A., N.D. Sherry, H. Kiyosawa, A. Tsuda and P.J. Harrison (2006) Phytoplankton processes I:changes in biomass and community composition due to a mesoscale iron enrichment in the NE
subarctic Pacific. Deep-Sea Research II. 53: 2095-2113
Saito, H., A. Tsuda, Y. Nojiri, J. Nishioka, S. Takeda, H. Kiyosawa, I. Kudo, Y. Noiri, T. Ono, Y. Taira, K.
Suzuki, T. Yoshimura and P.W. Boyd (2006) Nutrients and phytoplankton dynamics during thestationary and declining phases of a phytoplankton bloom induced by iron-enrichment in the eastern
subarctic Pacific. Deep-Sea Research II. 53: 2168-2181
Kudo, I., Y. Noiri, J. Nishioka, Y. Taira, H. Kiyosawa and A. Tsuda (2006) Phytoplankton community
response to Fe and temperature gradient in the NE (SERIES) and NW (SEEDS) subarctic Pacific
Ocean. Deep-Sea Research II. 53: 2201-2213.
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Kiyofuji, H., T. Hokimoto and S. Saitoh: Predicting the spatial and temporal chlorophyll-a distribution in
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Zainuddin, M., H. Kiyofuji, K. Saitoh and S. Saitoh (2006): Using multi-sensor satellite remote sensing
and catch data to detect ocean hot spots for albacore (Thunnus alalunga) in the northwestern North
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Hiroshi Murakami, Kosei Sasaoka, Kohtaro Hosoda, Hajime Fukushima, Mitsuhiro Toratani, Robert
Frouin, B. Greg Mitchell, Mati Kahru, Pierre-Yves Deschamps, Dennis Clark, Stephanie Flora,
Motoaki Kishino, Sei-ichi Saitoh, Ichio Asanuma, Akihiko Tanaka, Hiroaki Sasaki, Katsumi
Yokouchi, Yoko Kiyomoto, Hiroaki Saito, Cecile Dupouy, Absornsuda Siripong, Satsuki Matsumura,and Joji Ishizaka (2006): Validation of ADEOS-2 GLI ocean color products using in-situ observations,
Journal of Oceanography, 62 (3), 373-393 (2006)
Mizobata, K., J. Wang and S.-I. Saitoh : Eddy-induced Cross-Slope Exchange Maintaining Summer High
Productivity of the Bering Sea Shelf Break, Journal of Geophysical Research, Vol. 111, C10017,
doi:10.1029/2005JC003335, (2006)
Mizobata, K., S.-I. Saitoh and J. Wang: Summer biochemical enhancement in relation to the mesoscale
eddy at the shelf break in the vicinity of the Pribilof Islands, Deep-sea Research, Part II, (in press)(2006)
Iida, T. and S.-I. Saitoh: Temporal and spatial variability of chlorophyll concentrations in the Bering Sea,
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A04-11
Hashioka, T. and Y. Yamanaka: Ecosystem change in the western North Pacific associated with global
warming obtained by 3-D NEMURO. Ecol. Modeling. , DOI:10.1016/j.ecolmodel.2006.05.038, 2007.
Aita M. N., Y. Yamanaka, M. J. Kishi: Interdecadal Variation of the Lower Trophic Ecosystem in the
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10.1016/j.ecolmodel.2006.07.045, 2007.
Yoshie N., Y. Yamanaka, K. A. Rose, D. L. Eslinger, D. M. Ware and M. J. Kishi: Parameter sensitivity
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Fujii M., Y. Yamanaka, Y. Nojiri, M. J. Kishi, F. Chai: Comparison of seasonal characteristics inbiogeochemistry among the subarctic North Pacific stations described with a NEMURO-based marine
ecosystem model. Ecol. Modeling., doi:10.1016/j.ecolmodel.2006.02.046., 2007.
Hashioka, T. and Y. Yamanaka: Seasonal and regional variations of phytoplankton groups by top-down
and bottom-up controls obtained by a 3-D ecosystem model. Ecol. Modeling., DOI:
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