Miyazawa, Yasumasa

Last updated, 2012.02.05

Activities in Japanese

Team Leader, Ocean Downscaled Prediction Research Team, Climate Variation Predictability and Applicability Research Program, Research Institute for Global Change, JAMSTEC

Research Interest:

Papers:

Miyazawa, Y., T. Miyama, S. M. Varlamov, X. Guo, and T. Waseda, 2012: Open and coastal seas interactions south of Japan represented by an ensemble Kalman Filter, Ocean Dynamics, doi:10.1007/s10236-011-0516-2. html

Miyazawa, Y., R. Zhang, X. Guo, H. Tamura, D. Ambe, J.-S. Lee, A. Okuno, H. Yoshinari, T. Setou, and K. Komatsu, 2009: Water mass variability in the western North Pacific detected in a 15-year eddy resolving ocean reanalysis, J. Oceanogr., 65, 737-756. html

Miyazawa, Y., T. Kagimoto, X. Guo, and H. Sakuma, 2008: The Kuroshio large meander formation in 2004 analyzed by an eddy-resolving ocean forecast system, J. Geophys. Res.,113, C10015, doi:10.1029/2007JC004226. html

Miyazawa, Y., S. Yamane, X. Guo, and T. Yamagata, 2005: Ensemble forecast of the Kuroshio meandering, J. Geophys. Res., 110, C10026, doi:10.1029/2004JC002426. html

Miyazawa, Y., X. Guo, and T. Yamagata, 2004: Roles of meso-scale eddies in the Kuroshio paths , J. Phys. Oceanogr., 34, 2203-2222. html

Miyazawa, Y., and S. Minato, 2000: POM and two-way nesting POM study of Kuroshio damping phenomenon caused by a strong wind, J. Oceanogr., 56, 275-294. html

Papers (collaboration):

Honda, M. C., T. Aono, M. Aoyama, Y. Hamajima, H. Kawakami, M. Kitamura, Y. Masumoto,Y. Miyazawa, M. Takigawa, and T. Saino, 2011: Dispersion of artificial caesium-134 and -137 in the western North Pacific one month after the Fukushima accident, Geochemical Journal, accepted.

Kartadikaria, A. R., Y. Miyazawa, K. Nadaoka, and A. Watanabe, 2011: Existence of Eddies at Crossroad of the Indonesian seas, Ocean Dynamics, DOI:10.1007/s10236-011-0489-1. html

Kartadikaria A. R., K. Nadaoka, and Y. Miyazawa 2011: A numerical study on larval dispersal around the Southeast Asia and West Pacific (SEA-WP) regions using an Indo-Pacific ocean circulation model , Proc. of International Session in Conference on Coastal Engineering, JSCE, 2, in press.

Kartadikaria, A. R., Y. Miyazawa, S. M. Varlamov, and K. Nadaoka, 2011: Ocean circulation for the Indonesian seas driven by tides and atmospheric forcings: Comparison to observational data, J. Geophys. Res. 116, C09009, doi:10.1029/2011JC007196. html

Sasai, Y., A. R,Kartadikaria, Y.Miyazawa, and K.Nadaoka, 2011: Marine ecosystem simulation in the Indonesian Seas, Interdisciplinary Studies on Environmental Chemistry - Marine Environmental Modeling & Analysis, Eds., K. Omori, X. Guo, N. Yoshie, N. Fujii, I. C. Handoh, A. Isobe, and S. Tanabe, pp. 11-17, TERRAPUB.

Tamura, H., T. Waseda, and Y. Miyazawa, 2010: Impact of nonlinear energy transfer on the wave field in Pacific hindcast experiments, J. Geophys. Res., 115, C12036, doi:10.1029/2009JC006014. html

Lu, L.-F., Y. Miyazawa, W. Cui, and K. Nadaoka, 2010: Numerical study of surface water circulation around Sekisei Lagoon, southwest of Japan, Ocean Dynamics, doi:10.1007/s10236-010-0270-x. html

Tamura, H., T. Waseda, and Y. Miyazawa, 2009: Freakish sea state and swell-windsea coupling: Numerical study of the Suwa-Maru incident, Geophys. Res. Lett., 36, L01607, doi:10.1029/2008GL036280. html

Tamura, H., T. Waseda, Y. Miyazawa, and K. Komatsu, 2008: Current-induced moduration of the ocean wave spectrum and the role of nonlinear energy transfer, J. Phys. Oceanogr., 38, 2662-2684. html

Kagimoto, T., Y. Miyazawa, X. Guo, and H. Kawajiri, 2008: High resolution Kuroshio forecast system -Description and its applications-, in High Resolution Numerical Modeling of the Atmosphere and Ocean, W. Ohfuchi and K. Hamilton (eds), Springer, New York, 209-234. html

Uchimoto, K., H. Mitsudera, N. Ebuchi, and Y. Miyazawa, 2007: Anticyclonic eddy caused by the Soya Warm Current in an Okhotsk OGCM, J. Oceanogr., 63, 379-391. html

Guo, X., Y. Miyazawa, and T. Yamagata, 2006: The Kuroshio onshore intrusion along the shelf break of the East China Sea: the origin of the Tsushima Warm Current, J. Phys. Oceanogr., 36, 2205-2231. html

Guo, X., H. Hukuda, Y. Miyazawa, and T. Yamagata, 2003: A triply nested ocean model for simulating the Kuroshio -Roles of horizontal resolution on JEBAR-. J. Phys. Oceanogr., 33, 146-169. html

Presentations:

Inverse estimation of source and diffusion parameters of oceanic radioactivity dispersion models associated with the Fukushima accident, GODAE OceanView International Workshop of the Coastal and Shelf Seas Task Team, 10-12 December 2012, Miami.

Transport simulation of the radionuclides from the shelf to open ocean around Fukushima, Benchmarking models for the ocean dispersion and transfer of radionuclide release from TEPCO Fukushima Nuclear Power Plant, 3-5 October 2011, Monaco. (Invited)

The Kuroshio variation south of Japan detected by the Ensemble Kalman Filter, 3rd International Workshop on Modeling the Ocean, 8 June 2011, Qingdao, China.

Application of the ensemble Kalman Filter to the Kuroshio variation south of Japan, 16th Pacific Asian Marginal Seas (PAMS) Meeting, 21 April 2011, Taipei, Taiwan. (Invited) Extendend abstract PDF(0.5MB)

Development of the Ensemble Kalman Filter for the analysis and prediction of the Kuroshio variations south of Japan, 2010 AGU Fall Meeting, 18 December 2010, San Francisco, USA. (Invited)

Application of the Ensemble Kalman Filter to the Kuroshio variations around the Kii Peninsula, PICES 19th annual meeting, 28 October 2010, Portland, USA.

Japan Coastal Ocean Predictability Experiment (JCOPE) -Comprehensive applications of numerical ocean forecasting-, A seminar at Korea Ocean Research and Development Institute (KORDI), 29 July 2010, Ansan, Korea. (Invited)

The Kuroshio frontal waves detected in the FRA-JCOPE2 reanalysis data, Workshop on Ocean Modeling in the Regional Marine Systems, 15 July 2010, Kashiwa, Japan. (Invited)

Roles of the in-situ observations in the detection of the Kuroshio frontal variability south of Japan, 2nd International Workshop on Modeling the Ocean, 25 May 2010, Norfolk, USA.

Japan Coastal Ocean Predictability Experiment: the Development of Parallel Ensemble Kalman Filter using the parallelized Princeton Ocean Model, GFDL Lunch-Time Seminar, 21 May 2010, Princeton, USA. (Invited)

Roles of the in-situ observations in the detection of the Kuroshio frontal variability south of Japan, Climate Change Effects on Fish and Fisheries: Forecasting impacts, Assessing Ecosystem Responses, and Evaluating Management Strategies, 28 April 2010, Sendai, Japan.

Water mass variability detected in a 17-year eddy resolving ocean reanalysis : roles of the in-situ data, 2010 Ocean Sciences meeting, 24 February 2010, Portland, USA.

Roles of in-situ profile data obtained by Japanese fishery research agencies in quality of the eddy-resolving ocean reanalysis data: FRA-JCOPE2, PICES 18th annual meeting, 29 October 2009, Jeju, Korea.

Interannual variation of the Changjiang Diluted Water found in the JCOPE2 15-year ocean reanalysis, Seminar at College of Ocean Science, Cheju National University , 27 October 2009, Jeju, Korea. (Invited)

Japan Coastal Ocean Predictability Experiment -Comprehensive Operational applications of POM- , 2009 Workshop on Modeling the Ocean, 23-26 February 2009, Taipei, Taiwan. (Invited)

Water mass variabirities in the western North Pacific detected in a 15-year eddy-resolving ocean reanalysis, Final GODAE symposium, 11-15 November 2008, Nice, France.

Toward the data-assimilation system of marginal seas in the SEA-WP region, PICES 17th annual meeting, 30 October 2008, Dalian, China.

Operational Kuroshio forecast and ocean floor observation systems around the Nankai trough,International Workshop: What can be done with seafloor observation networks?, 10 March 2008, Tokyo, Japan. (Invited)

Meso-scale variations reproduced by the JCOPE2 reanalysis,2008 Ocean Sciences Meeting, 3 March 2008, Orlando, USA.

POM applications in JCOPE, POM meeting in 2008 Ocean Sciences Meeting, 3 March 2008, Orlando, USA. (Invited)

Water mass structure in the Kuroshio-Oyashio mixed water region reproduced by JCOPE2,PICES 16th Annual Meeting, 2 November 2007, Victoria, Canada.

Intensive evaluations of the JCOPE ocean forecast systems using a regional metrics, 2007 GODAE Coastal Workshop 'Assessing the value of GODAE products in coastal and shelf seas', 11 October 2007, Liverpool, UK.

Prediction of the Kuroshio meandering using JCOPE, Joint Meeting of CVRP/FRCGC/JAMSTEC, MIRI and Italian National Group for Operational Oceanography (GNOO), 11 December 2006, Bologna, Italy.

Japan Coastal Ocean Predictability Experiment: Comprehensive Application of Ocean Forecasting, GODAE Symposium on ocean data assimilation and prediction in Asia-Oceania, 16-18 October 2006, Beijing, China. PDF(0.5MB)

Kuroshio large meander formation in 2004 analyzed by an eddy-resolving ocean forecast system, Western Pacific Geophysics Meeting, OS04, 24-27 July, 2006, Beijing, China.

Eddy-Kuroshio interactions associated with the Large Meander formation in 2004, Ocean Science Meeting, OS26N-11, February 21, 2006, Honolulu, USA.

Eddy-Kuroshio interactions associated with the Large-Meander formation in 2004, Second forum on Marine Science - New development and challenge, June 14-16, 2005, Qingdao, China.

Eddy-Kuroshio interactions associated with the Large-Meander formation in 2004, International Workshop on the Indian Ocean Variability and the Asia Monsoon Climate, June 13, 2005, Nanjing, China. (Invited)

Modeling of the Northwest Pacific subarctic gyre system and the Sea of Okhotsk by using the JCOPE OGCM, Workshop on modeling of sea-ice and ocean circulation, with an emphasis on the Sea of Okhotsk, February 18, 2005, Sapporo, Japan. (Invited)

The JCOPE ocean forecast system: First ARGO Science Workshop, November 12-14, 2003, Tokyo, Japan. PDF(0.5MB)

An experimental ocean nowcast/forecast system using multi-data: Symposium on space platforms for water and climate observation, March 14, 2003, Awajishima, Japan.

Japan Coastal Ocean Predictability Experiment -Real time forecast system- abstract, a special session "ocean forecasting" in International Symposium "TECHNO-OCEAN 2002", November 21, 2002, Kobe, Japan.

Japan Coastal Ocean Predictability Experiment (JCOPE) -Hindcast/Forecast System- abstract, The 26th SCOR International Symposium, Session 'Ocean State Estimation and Forecasting', October 3, 2002, Sapporo, Japan

Nesting Ocean Model for Parallel Vector Processors, 2001 Terrain-Following Coordinates Ocean Models Users' Workshop, August 20-22, 2001, Boulder, Colorado, USA.

Prediction of the Kuroshio path variability by assimilating surface data into POM: practical approach and further development, International Workshop on GODAE with Focus on the Pacific, July 23-25, 2001, Honolulu, Hawaii, USA.

Eddy resolving Kuroshio simulation: eddy behavior in the Kuroshio region, the 11th PAMS/JECSS Workshop, April 11-13, 2001, Cheju, Korea.

Kuroshio damping phenomenon caused by a strong wind simulated using a two-way nesting POM, International Conference, Coastal and Ocean Modelling, November, 1998, Valletta, Malta.

Documents:

Miyazawa, Y., T. Miyama, S. M. Varlamov, X. Guo, and, T. Waseda, 2011: Development of an ocean current forecast system suitable for the assimilation of ship observation data, Conference Proceedings, the Japan Society of Naval Architects and Ocean Engineers, 11, 67-70, 2011S-OS3-3.

Oey, L.-Y., T. Ezer, Y. Miyazawa, and C.-R. Wu, 2010b: Editorial - International Workshop on Modeling the Ocean (IWMO) special issue (Part II) in Ocean Dynamics , Ocean Dynamics, 10.1007/s10236-010-0338-7. html

Oey, L.-Y., T. Ezer, Y. Miyazawa, and C.-R. Wu, 2010a: Editorial - International Workshop on Modeling the Ocean (IWMO) special issue (Part I) in Ocean Dynamics , Ocean Dynamics, 10.1007/s10236-010-0281-7. html

Miyazawa, Y., 2004: Kuroshio path variations due to meso-scale eddies and their predictability , Doctor Thesis in University of Tokyo, pp.110. PDF(6.7MB)

Miyazawa, Y., and S. Minato, 2000: Development of a two-way nesting code for the Princeton Ocean Model, JAMSTEC R, 40, 11-22. PDF(0.97MB)

Professional Activities:

A lecturer of Training course on ocean models, UNESCO/IOC Regional Training and Research Center on Ocean Dynamics and Climate , Qingdao, China, 10-16 Jun. 2011. html

Scientific committe for 3rd International Workshop on Modeling the Ocean (IWMO2011) , Qingdao, China, 6-9 Jun. 2011.

Committe of Ph.D. defense for Dr. Yu-Lin Chang, Natinal Taiwan Normal University, Taipei, Taiwan, 3 Jun. 2011.

Co-editor for special issues of Ocean Dynamics: Part I html, Part II html, First International Workshop on Modeling the Ocean, Taipei, Feb. 2009.

Associate Professor (Cooperative graduate school program), Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology, Oct. 2007 - Mar. 2009.

Reviewer for AOSL letters, Atmosphere-Ocean, Asia-Pacific Journal of Atmospheric Sciences, Deep Sea Research, Geophysical Research Letters, Hydrological Research Letters, Journal of Atmospheric and Oceeanic Technology, Journal of Climate, Journal of Geophysical Research, Journal of Oceanography, Journal of Physical Oceanography, Ocean Dynamics, and Ocean Modelling.

Reviewer for research funding proposals: The Netherlands Organisation for Scientific Research (NWO), Dynamics of Complex Systems

Award:

CCCC Program Best Poster Presentation Award in the 17th PICES HTML 2008.11.02

Contact Address:

Miyazawa, Yasumasa
Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology
3173-25 Showamachi, Kanazawa-ku, Yokohama City, Kanagawa 236-0001, Japan

Phone: +81-45-778-5518(direct), Fax: +81-45-778-5707
E-mail: