Search Results - "Ishizaka, J"

Mesoscale Eddies Control the Timing of Spring Phytoplankton Blooms: A Case Study in the Japan Sea by Maúre, E. R., Ishizaka, J., Sukigara, C., Mino, Y., Aiki, H., Matsuno, T., Tomita, H., Goes, J. I., Gomes, H. R.

“…Satellite Chlorophyll a (CHL) data were used to investigate the influence of mesoscale anticyclonic eddies (AEs) and cyclonic eddies (CEs) on the timing of…”
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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 by Umezawa, Y, Yamaguchi, A, Ishizaka, J, Hasegawa, T, Yoshimizu, C, Tayasu, I, Yoshimura, H, Morii, Y, Aoshima, T, Yamawaki, N

“…The northern East China Sea (ECS) serves as a spawning and nursery ground for many species of fish and squid. To clarify the basis of the food web in the…”
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An evaluation of ocean color model estimates of marine primary productivity in coastal and pelagic regions across the globe by Saba, V. S., Friedrichs, M. A. M., Antoine, D., Armstrong, R. A., Asanuma, I., Behrenfeld, M. J., Ciotti, A. M., Dowell, M., Hoepffner, N., Hyde, K. J. W., Ishizaka, J., Kameda, T., Marra, J., Mélin, F., Morel, A., O'Reilly, J., Scardi, M., Smith, W. O., Smyth, T. J., Tang, S., Uitz, J., Waters, K., Westberry, T. K.

“…Nearly half of the earth's photosynthetically fixed carbon derives from the oceans. To determine global and region specific rates, we rely on models that…”
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Variation of the photosynthetic electron transfer rate and electron requirement for daily net carbon fixation in Ariake Bay, Japan by Zhu, Y., Ishizaka, J., Tripathy, S. C., Wang, S., Mino, Y., Matsuno, T., Suggett, D. J.

“…Fast repetition rate fluorometry (FRRf) provides a potential means to examine marine primary productivity; however, FRRf-based productivity estimations require…”
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Influence of the Changjiang River on the light absorption properties of phytoplankton from the East China Sea by Wang, S. Q, Ishizaka, J, Yamaguchi, H, Tripathy, S. C, Hayashi, M, Xu, Y. J, Mino, Y, Matsuno, T, Watanabe, Y, Yoo, S. J

“…Phytoplankton light absorption properties were investigated at the surface and subsurface chlorophyll a maximum (SCM) layer in the East China Sea (ECS), a…”
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Modification of the vertically generalized production model for the turbid waters of Ariake Bay, southwestern Japan by Tripathy, S.C., Ishizaka, J., Siswanto, E., Shibata, T., Mino, Y.

“…The vertically generalized production model (VGPM), which was designed for open ocean waters ( Behrenfeld and Falkowski, 1997a; henceforth BF), was evaluated…”
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One‐Dimensional Turbulence‐Ecosystem Model Reveals the Triggers of the Spring Bloom in Mesoscale Eddies by Maúre, E. R., Ishizaka, J., Aiki, H., Mino, Y., Yoshie, N., Goes, J. I., Gomes, H. R., Tomita, H.

“…A lower trophic ecosystem model coupled with a one‐dimensional physical turbulence closure model was applied to study phytoplankton dynamics and spring bloom…”
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Response of the equatorial Pacific to chlorophyll pigment in a mixed layer isopycnal ocean general circulation model by Nakamoto, S., Kumar, S. Prasanna, Oberhuber, J. M., Ishizaka, J., Muneyama, K., Frouin, R.

“…The influence of phytoplankton on the upper ocean dynamics and thermodynamics in the equatorial Pacific is investigated using an isopycnal ocean general…”
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Assessment of carbon- and fluorescence-based primary productivity in Ariake Bay, southwestern Japan by Tripathy, S.C., Ishizaka, J., Fujiki, T., Shibata, T., Okamura, K., Hosaka, T., Saino, T.

“…A comparative account of primary productivity (PP), in the characteristically turbid and highly dynamic waters of Ariake Bay, measured by 13C uptake and fast…”
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Assessing post-tsunami effects on ocean colour at eastern Indian Ocean using MODIS Aqua satellite by Tan, C. K., Ishizaka, J., Manda, A., Siswanto, E., Tripathy, S. C.

“…The 2004 Indian Ocean tsunami had been reported to cause vast destruction on marine environment, but its effect on the primary production and upwelling event…”
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Bio-optical studies during the JGOFS-equatorial Pacific program: a contribution to the knowledge of the equatorial system by Bricaud, A, Roesler, C.S, Parslow, J.S, Ishizaka, J

“…Bio-optical studies, pursued in the equatorial Pacific area during the International Joint Global Ocean Flux Study program, contributed to a better knowledge…”
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Simulations of the distribution of sequestered CO2 in the North Pacific using a regional general circulation model by XU, Y, ISHIZAKA, J, AOKI, S

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Size and taxonomic plankton community structure and carbon flow at the equator, 175‡E during 1990–1994 by Ishizaka, J., Harada, K., Ishikawa, K., Kiyosawa, H., Furusawa, H., Watanabe, Y., Ishida, H., Suzuki, K., Handa, N., Takahashi, M.

“…Size and taxonomic structure of plankton community carbon biomass for the 0.2–2000 μm equivalent spherical diameter range were determined at the equator at…”
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Relationship between light, community composition and the electron requirement for carbon fixation in natural phytoplankton by Zhu, Yuanli, Ishizaka, Joji, Tripathy, Sarat Chandra, Wang, Shengqiang, Sukigara, Chiho, Goes, Joaquim, Matsuno, Takeshi, Suggett, David J.

“…Fast repetition rate fluorometry (FRRF) provides a means to examine primary productivity at high resolution across broad scales, but must be coupled with…”
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Phytoplankton size class in the East China Sea derived from MODIS satellite data by Zhang, Hailong, Wang, Shengqiang, Qiu, Zhongfeng, Sun, Deyong, Ishizaka, Joji, Sun, Shaojie, He, Yijun

“…The distribution and variation of phytoplankton size class (PSC) are key to understanding ocean biogeochemical processes and ecosystems. Remote sensing of the…”
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Distribution of the Prochlorophyte Prochlorococcus in the Central Pacific Ocean as Measured by HPLC by Suzuki, Koji, Handa, Nobuhiko, Kiyosawa, Hiroshi, Ishizaka, Joji

“…The abundance of the prochlorophyte Prochlorococcus along a 56⚬-long meriodinal (175-circ E) transect in the central Pacific was measured by determining…”
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An ensemble Kalman filter system with the Stony Brook Parallel Ocean Model v1.0 by Ohishi, Shun, Hihara, Tsutomu, Aiki, Hidenori, Ishizaka, Joji, Miyazawa, Yasumasa, Kachi, Misako, Miyoshi, Takemasa

“…This study develops an ensemble Kalman filter (EnKF)-based regional ocean data assimilation system in which the local ensemble transform Kalman filter (LETKF)…”
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Time series of physical and optical parameters off Shimane, Japan, during fall of 1993: First observation by moored optical buoy system for ADEOS data verification by Ishizaka, J, Asanuma, I, Ebuchi, N, Fukushima, H, Kawamura, H, Kawasaki, K, Kishino, M, Kubota, M, Masuko, H, Matsumura, S, Saitoh, S, Senga, Y, Shimanuki, M

“…A moored optical buoy system has been developed by the National Space Developmental Agency of Japan (NASDA)for verification of the ocean-observing sensors of…”
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Retrieval of Chlorophyll a, suspended solids, and colored dissolved organic matter in Tokyo Bay using ASTER data by Kishino, Motoaki, Tanaka, Akihiko, Ishizaka, Joji

“…The Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER) has three bands in the visible and near-infrared (VNIR) with 15-m spatial…”
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Phytoplankton pigment distributions in regional upwelling around the Izu Peninsula detected by Coastal Zone Color Scanner on May 1982 by Ishizaka, J., Fukushima, H., Kishino, M., Saino, T., Takahashi, M.

“…Phytoplankton pigment (chlorophyll a + pheopigments) distributions in a regional upwelling around the Izu Peninsula obtained by the coastal zone color scanner…”
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