Kyushu University Academic Staff Educational and Research Activities Database
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Atsuhiko Isobe Last modified date:2024.02.02

Graduate School
Other Organization

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 Reseacher Profiling Tool Kyushu University Pure
Academic Degree
Country of degree conferring institution (Overseas)
Field of Specialization
Physical Oceanography, Coastal Oceanography
Total Priod of education and research career in the foreign country
Outline Activities
Please visit our web site for detailed descriptions including my publication list. My recent research interests are as follows:
Dynamics of continental shelf and coastal circulation, with a focus on observational and numerical studies on Yelllow & East China Seas, and Seto Inland Sea. Atmosphere-ocean interaction in marginal seas and coastal oceans. Marine plastic debris, especially on transport and formation processes of marine micro-plastics.

Ocean dynamics at Dept. of Earth System Science & Tech., Works with students in Master& Doctor courses of Dept.ESST.
Research Interests
  • Dynamics of continental shelf and coastal circulation, with a focus on observational and numerical studies on Yelllow & East China Seas, and Seto Inland Sea. Atmosphere-ocean interaction in marginal seas and coastal oceans. Marine plastic debris, especially on transport and formation processes of marine micro-plastics.
    keyword : ocean circulation in shelf and coastal waters, atmosphere-ocean interaction, marine plastic debris, microplastics
    2006.04Please see my Web site (URL is shown above).
Current and Past Project
  • microplastic research
  • The project will focus on three main areas of research:
    (1) Surveillance and monitoring of tsunami-generated marine debris landfall;
    (2) Modeling movement of marine debris in the North Pacific; and
    (3) Risk (including potential impacts) from invasive species to coastal ecosystems.
  • Over the East Asian marginal seas including the Sea of Okhotsk, we are able to find complex ocean processes such as oceanic fronts associated with Kuroshio and Tsushima Currents, sub-mesoscale eddies of which horizontal scales are less than 100 km, and sea ice production. Our research objectives are to investigate how atmospheric processes with the synoptic/mesoscale scales (say, development of extratropical cyclones) are influenced by these ocean processes with relatively smaller spatial scales. In addition, our focuses are placed on whether the atmospheric processes altered above marginal seas again influence marginal seas. Do atmosphere-ocean coupled processes actually occur even in relatively narrow marginal seas?
  • Kuroshio:State estimate and prediction
Academic Activities
1. Yohitake, M., A. Isobe, Y. K. Song, W. J. Shim, A numerical model approach toward a settling process and feedback loop of ocean microplastics absorbed into phytoplankton aggregates, Journal of Geophysical Research -Oceans, 128, e2022JC018961, 2023.06.
2. Okubo, R., A. Yamamoto, A. Kurima, T. Sakabe, Y. Ide, and A. Isobe, Estimation of the age of polyethylene microplastics collected from oceans: Application to the western North Pacific Ocean, Marine Pollution Bulletin, 192, 114951, 2023.06.
3. Atsuhiko ISOBE and S. Iwasaki, The fate of missing ocean plastics­: Are they just a marine environmental problem?, Science of the Total Environment,, 825, 153935, 2022.02.
4. Alfonso, M. B., K. Takashima, S. Yamaguchi, M. Tanaka, and A. Isobe, Microplastics on plankton samples: multiple digestion techniques assesment based on weight, size, and FTIR spectoroscopy analyses, Marine Pollution Bulletin, 173, 113027, 2021.10.
5. Isobe, A., T. Azuma, M. Cordova, A. Cózar, F. Galgani, R. Hagita, L. D. Kanhai, K. Imai, S. Iwasaki, S. Kako, N. Kozlovskii, A. Lusher, S. Mason, Y. Michida, T. Mituhasi, Y. Morii, T. Mukai, A. Popova, K. Shimizu, T. Tokai, K. Uchida, M.Yagi, W. Zhang , A multilevel dataset of microplastic abundance in the world’s upper ocean and the Laurentian Great Lakes, Microplastics and Nanoplastics, 1, 16, 2021.10.
6. Morales-Caselles, C., J. Viejo, E. Martí, D. González, H. Pragnell-Raasch, J. I. González-Gordillo, E. Montero, G. M. Arroyo, G. Hanke, V. Salvo, O. C. Basurko, N. Mallos, L. Lebreton, F. Echevarría, T.van Emmerik, C. M. Duarte, J. A. Gálvez, E. van Sebille, F. Galgani, C. M. García, P. S. Ross, A. Bartual, C. Ioakeimidis, G. Markalain, A. Isobe, A. Cózar, An inshore-offshore sorting system revealed from global classification of ocean litter, Nature Sustainability,, 2021.09.
7. Erik Van Sebille, Stefano Aliani, Kara Lavender Law, Nikolai Maximenko, José M. Alsina, Andrei Bagaev, Melanie Bergmann, Bertrand Chapron, Irina Chubarenko, Andrés Cózar, Philippe Delandmeter, Matthias Egger, Baylor Fox-Kemper, Shungudzemwoyo P. Garaba, Lonneke Goddijn-Murphy, Britta Denise Hardesty, Matthew J. Hoffman, Atsuhiko Isobe, Cleo E. Jongedijk, Mikael L.A. Kaandorp, Liliya Khatmullina, Albert A. Koelmans, Tobias Kukulka, Charlotte Laufkötter, Laurent Lebreton, Delphine Lobelle, Christophe Maes, Victor Martinez-Vicente, Miguel Angel Morales Maqueda, Marie Poulain-Zarcos, Ernesto Rodríguez, Peter G. Ryan, Alan L. Shanks, Won Joon Shim, Giuseppe Suaria, Martin Thiel, Ton S. Van Den Bremer, David Wichmann, The physical oceanography of the transport of floating marine debris, Environmental Research Letters, 10.1088/1748-9326/ab6d7d, 15, 2, 2020.02.
8. Atsuhiko Isobe, Paleo-ocean Destratification Triggered by the Subduction of the Oyashio Water Into the Sea of Japan After the Last Glacial Maximum, Paleoceanography and Paleoclimatology, 10.1029/2019PA003593, 35, 3, 2020.03.
9. Isobe, A., N. T. Buenaventura, S. Chastain, S. Chavanich, A. Cózar, M. DeLorenzo, P. Hagmann, H. Hinata, N. Kozlovskii, A. L. Lusher, E. Martí, Y. Michida, J. Mu, M. Ohno, G. Potter, P. S. Ross, N. Sagawa, W. J. Shim, Y. K. Song, H. Takada, T. Tokai, T. Torii, K. Uchida, K. Vassillenko, V. Viyakarn, W. Zhang, An interlaboratory comparison exercise for the determination of microplastics in standard sample bottles, Marine Pollution Bulletin,, 146, 831-837, 2019.06.
10. Atsuhiko Isobe, Sinsuke Iwasaki, Keiichi Uchida, and Tadashi Tokai, Abundance of non-conservative microplastics in the upper ocean from 1957-2066, Nature Communications, 10.1038/s41467-019-08316-9, 10, 417, 2019.01.
11. Young Kyoung Song, Sang Hee Hong, Soeun Eo, Mi Jang, Gi Myung Han, Atsuhiko Isobe, Won Joon Shim, Horizontal and Vertical Distribution of Microplastics in Korean Coastal Waters, Environmental Science & Technology, 10.1021/acs.est.8b04032, 52, 21, 12188-12197, 2018.11.
12. Iwanaka, Y., and A. Isobe, Tidally induced instability processes suppressing rive plume spread in a nonrotating and nonhydrostatic regime, Journal of Geophysical Research -Oceans, 123, 3545-3562, 2018.06.
13. Zhao Ning, Iwasaki, S, M. Yamamoto, and A. Isobe, Modulation of Extratropical Cyclones by Previous Cyclones via the Sea Surface Temperature Anomaly over the Sea of Japan in Winter, Journal of Geophysical Research -Atmospheres, 123, 6312-6320, 2018.06.
14. Kako, S., A. Isobe, T. Kataoka, K. Yufu, S. Sugizono, C. Plybon, and T. A. Murphy, Sequential webcam monitoring and modeling of marine debris abundance, Marine Pollution Bulletin, in press, 2018.06.
15. Tomoya Kataoka, Cathryn Clarke Murray, Atsuhiko Isobe, Quantification of marine macro-debris abundance around Vancouver Island, Canada, based on archived aerial photographs processed by projective transformation, Marine Pollution Bulletin, 10.1016/j.marpolbul.2017.08.060, 132, 44-51, 2018.07.
16. Shinsuke Iwasaki, Atsuhiko Isobe, Shin'ichiro Kako, Keiichi Uchida, Tadashi Tokai, Fate of microplastics and mesoplastics carried by surface currents and wind waves -A numerical model approach in the Sea of Japan, Marine Pollution Bulletin, 10.1016/j.marpolbul.2017.05.057, 121, 1-2, 85-96, 2017.01.
17. Miyao, Y. and A. Isobe, An attempt to visualize coastal oceanic features using an infrared camera suspended by a balloon, Journal of The Remote Sensing Society of Japan, 37, 112-123, 2017.06.
18. Atsuhiko Isobe, Kaori Uchiyama-Matsumoto, Keiichi Uchida, Tadashi Tokai, Microplastics in the Southern Ocean, Marine Pollution Bulletin, 10.1016/j.marpolbul.2016.09.037, 114, 1, 623-626, 2017.10, 東京海洋大学の練習船で調査を行い、世界で初めて南極海で浮遊マイクロプラスチックを発見した。.
19. Atsuhiko Isobe, Percentage of microbeads in pelagic microplastics within Japanese coastal waters, Marine Pollution Bulletin, 10.1016/j.marpolbul.2016.06.030, 110, 1, 432-437, 2016.09.
20. Atsuhiko Isobe, Keiichi Uchida, Tadashi Tokai, Shinsuke Iwasaki, East Asian seas: A hot spot of pelagic microplastics, MARINE POLLUTION BULLETIN, 10.1016/j.marpolbul.2015.10.042, 101, 2, 618-623, 2015.12.
21. Atsuhiko Isobe, K. Kubo, Y. Tamura, S. Kako, E. Nakashima, N. Fujii, Selective transport of microplastics and mesoplastics by drifting in coastal waters, Marine Pollution Bulletin, 89, 324-330, 2014.11.
22. Atsuhiko Isobe, S. Kako, S. Iwasaki, Synoptic scale atmospheric motions modulated by spring phytoplankton bloom in the Sea of Japan, Journal of Climate, 27, 7587-7602, 2014.10.
23. Kenki Kasamo, Atsuhiko Isobe, S. Minobe, A. Manda, H. Nakamura, K. Ogata, H. Nishikawa, Y. Tachibana, S. Kako, Transient and local weakening of surface winds observed above the Kuroshio front in the winter East China Sea, Journal of Geophysical Research -Atmospheres, doi:10.1002/2013JD020610, 119, 1277-1291, 2014.05.
24. Yasuyuki Miyao, Atsuhiko Isobe, S. Kako, An application of low-altitude remote sensing using a vessel-towed balloon for monitoring jellyfish patchiness in coastal waters, Journal of The Remote Sensing Society of Japan, 34, 2, 113-120, 2014.04.
25. Shin'ichiro Kako, Atsuhiko Isobe, T. Kataoka, H. Hinata, A decadal prediction of the quantity of plastic marine debris littered on beaches of the East Asian marginal seas, Marine Pollution Bulletin, 81, 174-184, 2014.04.
26. Shinsuke Iwasaki, Atsuhiko Isobe, Shin'ichiro Kako, Atmosphere-ocean coupled process along coastal areas of the Yellow and East China Seas in winter, Journal of Climate, 27, 1, 155-167, 2014.01.
27. Etsuko Nakashima, Atsuhiko Isobe, Shin'ichiro kako, T. Itai, S. Takahashi, Quantification of toxic metals derived from macroplastic litter on Ookushi beach, Japan, Environmental Science & Technology, DOI: 10.1021/es301362g, 46, 10099-10105, 2012.10.
28. Atsuhiko Isobe, Shin'ichiro Kako, A role of the Yellow and East China Seas in the development of extratropical cyclones in winter, Journal of Climate, doi:, 25, 8328-8340, 2012.08.
29. Atsuhiko Isobe, Shin'ichiro Kako, X. Guo, H. Takeoka, Ensemble numerical forecasts of the sporadic Kuroshio-water intrusion (kyucho) into shelf and coastal waters, Ocean Dynamics, 62, 633-644, 2012.07.
30. Shin'ichiro Kako, Atsuhiko Isobe, Sinya Magome, Low altitude remote-sensing method to monitor marine and beach litter of various colors using a balloon equipped with a digital camera, Marine Pollution Bulletin, 64, 1156-1162, 2012.06.
31. Shin'ichiro Kako, Atsuhiko Isobe, M. Kubota, High-resolution ASCAT wind vector data set gridded by applying an optimum interpolation method to the global ocean, Journal of Geophysical Research -Atmospheres, doi:10.1029/2010JD015484, 116, D23107, 2011.02.
Works, Software and Database
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Membership in Academic Society
  • American Geophysical Union
  • American Meteorological Scociety
Educational Activities
Dept.ESST/Seminar on Dynamics of Ocean Variability