Recent Research Results

2016 Kim, W., J.-E. Moon, Y. Park, J. Ishizaka
Evaluation of chlorophyll retrievals from Geostationary Ocean Color Imager (GOCI) for the North-East Asian region, Remote Sens. Env. 18, 482-495.

2016 Zhu, Y., J.Ishizaka, S.C. Tripathy, S. Wang, Y. Mino, T. Matsuno, D.J. Suggett
Variation of the photosynthetic electron transfer rate and electron requirement for daily net carbon fixation in Ariake Bay, Japan, J. Oceanogra., DOI: 10.1007/s10872-016-0370-4.

2015 Tin, H.C., M.W. Lomas, J. Ishizaka
Satellite-derived estimates of primary production during the Sargasso Sea winer/spring bloom: Integration of in-situ time-series data and ocean color remote sensing observations, Regional Studes in Marine science, 3, 131-143. doi:10.1016/j.rma.2015.07.002

2015 Wang, S.Q., J. Ishizaka, T. Hirawake, Y. Watanabe, Y. Zhu, M. Hayashi, S. Yoo
Remote estimation of phytoplankton size fractions using the specral shape of light absorption, Optics Express, 23 (8), 10301-10318. DOI: 10.1364/OE.23.010301.

2014 Joji Ishizaka
Primary Production. In “State of the Marine Environment Report for the NOWPAP region (SOMER 2)”, Eds., V.M. Shulkin, A.N. Kachur, Northwest Pacific Action Plan (NOWPAP) Pollution Monitoring Regional Activity Cetner (POMRAC). pp. 26-30. 

2014 Sathyendranath, S., P. Chuhan, W. Gregg, N. Hoepffner, J. Ishizaka, J. Johannessen, M. Kampel, T. Kutser, T. Platt, J.-H. Ryu
Chapter 3: Ocean and Inland Waters, In "CEOS Strategy for Carbon Observations from Space", The Committee on Earth Observation Satellites (CEOS) Response to the Group on Earth Observation (GEO) Carbon Strategy. CEOS and JAXA, pp. 49-67.

2014 Gao, L., D. Li, and J. Ishizaka
Stable isotope ratios of carbon and nitrogen in suspended organic matter: Seasonal and spatial dynamics along the Changjiang (Yangtze River) transport pathway, J. Geophys. Res. Biogeosci., 119, 1717-1737, doi:10.1002/2013JG002487.

2014 Chen, J., T. Cui, J. Ishizaka, C. Lin
A neural network model for remote sensing of diffuse attenuation coefficient in global oceanic and coastal waters: Exemplifying the applicability of the model to the coastal regions in Eastern China Seas. Remote Sens. Env., 148, 168-117,

2014 Terauchi, G., R. Tsujimoto, J. Ishizaka, H. Nakata
Influence of river discharge on seasonal and interannual variability of remotely sensed chlorophyll-a concentration in Toyama Bay, the Sea of Japan. La Mer, 52, 49-60

2014 Terauchi, G., R. Tsujimoto, J. Ishizaka, H. Nakata
Preliminary assessment of eutrophicaation by remote sensed chlorophyll-a in Toyama Bay, the Sea of Japan. J. Oceanogr., 70, 175-184,

2014 Wang, S.Q., J. Ishizaka, H. Yamaguchi, S.C. Tripathy, M. Hayashi, Y.J. Xu, Y. Mino, T. Matsuno, Y. Watanabe, S.J. Yoo
Influence of Changjiang River on the light absorption properties of phytoplankton from the East China Sea. Biogeosciences, 11, 1759-1773., doi:10.5194/bg-11-1759-2014

2014 Umezawa, Y., A. Yamaguchi, J. Ishizaka, T. Hasegawa, C. Yoshimizu, I. Tayasu, H. Yoshimura, Y. Morii, T. Aoshima, and N. Yamawaki
Seasonal shifts in the contributions of the Changjiang River and the Kuroshio Current to nitrate dynamics in the continental shelf of the northern East China Sea based on a nitrate dual isotopic composition approach. Biogeosciences, 11. 4, 1297-1317. doi:10.5194/bg-11-1297-2014

2013 Wang, S., J. Ishizaka, H. Yamaguchi, S.C. Tripathy, M. Hayashi, Y. Xu, Y. Mino, T. Matsuno, Y. Watanabe, S. Yoo
Influence of river discharge on phytoplankton absorption propoerties: a cas study in the East China Sea and Tsushima strait. Biogeosciences Discussion, 10, 14475-14514.,

2013 Xu, Y., J. Ishizaka, H. Yamaguchi, E. Siswanto, S. Wang
Relationships of interannual variability in SST and phytoplankton blooms with giantjellyfish (Nemopilema nomurai) outbreaks in the Yellow Sea and East China Sea. J. Oceanogr.,

2013 Yamaguchi, H., J. Ishizaka, E. Siswanto, Y.B. Son, S. Yoo, Y. Kiyomoto
Seasonal and Spring Interannual Variations of Satellite-Observed Chlorophyll-a in the Yellow and East China Seas: New Datasets with Reduced Interference from High Concentration of Resuspended Sediment. Cont. Shelf Res., 59, 1-9.

2013 Ando, A., H. Nakata, J. Ishizaka
 Influence of Tsushima Warm Current on the ishing ground formation of swordtip squid (Photololigo edulis) in the Sea of Genkai, Japan, Suisan Kaiyo Kenkyu, 77, 83-91. (In Japanese, with English Abstract)

2012 Ryu J.-H. and J. Ishizaka
GOCI Data processing and ocean applications. Ocean Sci. J., 47, 221, doi:10.1007/s12601-012-0023-5.

2012 Siswanto, E., J. Ishizaka, S.C. Tripathy, K. Miyamura
Detection of harmful algal blooms of Kareia mikimotoi using MODIS measurments: A case study of Seto-Inland Sea, Japan. Remote Sens. Env. 129, 185-196. ,  

2012 Yamamoto, M., A. Shimamoto, T. Fukuhara, Y. Tanaka, J. Ishizaka
 Glycerol dialkyl glycerol tetraethers and the TEX86 index in sinking particles in the western North Pacific, Org. Geochem., 53, 52-62. .

2012 Yamaguchi, H., H.-C. Kim, Y.B. Son, S. W. Kim, K. Okamura, Y. Kiyomoto, J. Ishizaka,
Seasonal and Summer Internannual Variations of SeaWiFS Chlorophyll a in the Yellow Sea and East China Sea. Prog. Oceanogr. 105, 22-29. DOI:

2012 Son, Y.B., W.D. Gardner, M.J. Richardson, J. Ishizaka, J.-H. Ryu, S.-H. Kim, S.H. Lee
Tracing offshore low-salinity plumes in the northeastern Gulf of Mexico during the summer season by use of multispectral remote-sesning data., J. Oceanogr., 68, 743-760. DOI 10.1007/s10872-012-0131-7

2012 Tripathy, S.C., J. Ishizaka, E. Siswanto, T. Shibata, Y. Mino
Modification of Vertically Generalized Production Model for Turbid Waters of Ariake Bay, Southwestern Japan. Est. Coast. Shelf Sci, 97, 66-77.

2011 Shiozaki, T., K. Furuya, H. Kurotori, T. Kodama , S. Takeda, T. Endoh, Y. Yoshikawa, J. Ishizaka, T. Matsuno
Imbalance between vertical nitrate flux and nitrate assimilation on a continental shelf: Implications of nitrification, Geophysic. Res. Lett., 116, C10031, doi:10.1029/2010JC006934

2011 Siswanto, E., J. Tang, H. Yamaguchi, Y.-H. Ahn, J. Ishizaka, S. Yoo, S.-W. Kim, Y. Kiyomoto, K. Yamada, C. Chiang, H. Kawamura
Empirical ocean color algorithms to retrieve chlorophyll-a, total suspended matter, and colored dissolved organic matter absorption coefficient in the Yellow and East China Seas. J. Oceanogr., 67, 627-650, DOI: 10.1007/s10872-011-0062-z

2011 Ando, A., J. Ishizaka, H. Nakata
Influence of Tsushima Warm Current on the Fishing Ground of Jack Mackerel (Trachurus japonicus) in the Sea of Genkai, Japan. Suisan Kaiyo Kenkyu., 75, 154-160. (In Japanese with Englsh Abstract)

2011 Saba, V.S., M.A.M. Friedrichs, D. Antoine, R.A. Armstrong, I. Asanuma, M.J. Behrenfeld, A.M. Ciotti, M. Dowell, N. Hoepffner, K.J.W. Hyde, J. Ishizaka, T. Kameda, J. Marra, F. Melin, A. Morel, J. O'Reilly, M. Scardi, W.O. Smith Jr., T.J. Smyth, S. Tang, J. Uitz16, K. Waters, and T.K. Westberry
An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe, Biogeosciences, 8, 489-503.

2010 Shibata, T., S.C. Tripathy, J. Ishizaka,
Phytoplankton Pigment Change as a Photoadaptive Response to Light Variation caused by Tidal Cycle in Ariake Bay, Japan, J. Oceanogr., 66, 831-843.

2010 Sasaki, H., E. Siswanto, Y. Gomi, K. Nishiuchi, Y. Kiyomoto, K. Mokamura, T. Hasegawa, J. Ishizaka
Distributions of Low-salinity Water using Ocean−Color Satellite and Giant Jellyfish(Nemopuemanomurai)in the East China Sea during Spring-Summer. Umi to Sora, 86, 1-11. (In Japanese with Englsih Abstract)

2010 Hutahaean, A.A., J. Ishizaka, A. Morimoto, J. Kanda, N. Horimoto and T. Saino,
Development of Algorithms for Estimating the Seasonal Nitrate Profiles in the Upper Water Column of Sagami Bay, Japan. La Mer, 48, 1-16.
(Awarded Japnese-French Oceanographic Society Paper Prize)

2010 Saba, V.S., M.A.M. Friedrichs, M.-E. Carr, D. Antoine, R.A. Armstrong, I. Asanuma, O. Aumont, N.R. Bates, M.J. Behrenfeld, V. Bennington, L. Bopp, J. Bruggeman, E.T. Buitenhuis, M.J. Church, A.M. Ciotti, S.C. Doney, M. Dowell, J. Dunne, S. Dutkiewicz, W. Gregg, N. Hoepffner, K.J.W. Hyde, J. Ishizaka, T. Kameda, D.M. Karl, I. Lima, M.W. Lomas, J. Marra, G.A. McKinley, F. Melin, J.K. Moore, A. Morel, J. O’Reilly, B. Salihoglu, M. Scardi, T.J. Smyth, S. Tang, J. Tjiputra, J. Uitz, M. Vichi, K. Waters, T.K. Westberry, and A. Yool, Challenges of modeling depth-integrated marine primary productivity over multiple decades: A case study at BATS and HOT, Global Biogeochem. Cycles, 24, GB3020, doi:10.1029/2009GB003655.

2010 Tripathy, S.C., J. Ishizaka, T. Fujiki, T. Shibata, K. Okamura, T. Hosaka, T. Saino,
Assessment of carbon- and fluorescence-based primary productivity in Ariake Bay, southwestern Japan, Est. Coast. Shelf Sci. 87: 163-173.

2009 Ishida, H., Y.W. Watanabe, J. Ishizaka, T. Nakano, N. Nagai, Y. Watanabe, A. Shimamoto, N. Maeda and M. Magi,
Possibility of recent changes in vertical distribution and size composition of chlorophyll-a in the western North Pacific region, J. Oceanogr..65, 179-186.

(Awarded Okada Prize of The Oceanographic Society of Japan)

2009 Endo, T., T. Matsuno, Y. Yoshikawa, Y. Tatsuyama and J. Ishizaka, Observations of wind-driven deepening of the surface mixing layer in the Tsushima Strait, J. Oceanogr., 65, 273-279.

2009 Kim, H.-c., H. Yamaguchi, S. Yoo, J. Zhu, K. Okamura, Y. Kiyomoto, K. Tanaka, S.-W. Kim, T. Park, I.S. Oh and J. Ishizaka, Distribution of Changjiang Diluted Water Detected by Satellite Chlorophyll-a and Its Interannual Variation during 1998-2007, J. Oceanogr., 65, 129-135.

2009 Ishizaka, J., Ocean Color Research for Global Imager (GLI) on Advanced Earth Observation Satellite-II (ADEOS-II) J. Remote Sensing Soc. Japan, 29, 74-79. (In Japanese)

2009 Nakajima, T., H. Murakami, M. Hori, T.Y. Nakajima, H. Yamamoto, J. Ishizaka, R. Takeishi, T. Aoki, T. Takamura, M. Kuji, D.D. Nguyen, A. Ono, S. Fukuda and K. Muramatsu (2009) Overview and Science Highlights of the ADEOS-II/GLI Project. J. Remote Sensing Soc. Japan, 29, 11-28. (In Japanese)

2009 Friedrichs, M.A.M., M.-E. Carr, R.T. Barber, M. Scardi, D. Antoine, R.A. Armstrong, I. Asanuma, M.J. Behrenfeld, E.T. Buitenhuis, F. Chai, J.R. Christian, A.M. Ciotti, S.C. Doney, M. Dowell, J. Dunne, B. Gentili, W. Gregg, N. Hoepffner, J. Ishizaka, T. Kameda, I. Lima, J. Marra, F. Melin, J.K. Moore, A. Morel, R.T. O'Malley, J. O'Reilly, V.S. Saba, M. Schmeltz, T.J. Smyth, J. Tjiputra, K. Waters, T.K. Westberry, A. Winguth (2009) Assessing the uncertainties of model estimates of primary productivity in the tropical Pacific Ocean. J. Mar. Sys.,76, 113-133.

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