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Heat and Water-mass Circulation and Ocean Variability

Update: 08. 04, 2015

(Sep. 8-9, 2015)

Research Meeting in International Coastal Research Center

Date:  September 8th, 2015 (Tue) 10:00~17:30
       September 9th, 2015 (Wed) 9:00~12:00

Venue: Otsuchi Central Public Hall
       32-126 Koduchi, Otsuchi, Iwate Prefecture 028-1121, JAPAN
Joint sponsorship: Otsuchi City Office
Organizers: Takahiro Toyoda (Meteorological Research Institute,
               Japan Meteorological Agency; ttoyoda[at],
            Kiyoshi Tanaka (Atmosphere and Ocean Research Institute,
               the University of Tokyo; ktanaka[at]


(*: Invited talk)

September 8th (Tue)

Session 1  Mixed layer and mode waters  <chair: Kiyoshi Tanaka (Univ Tokyo)>

10:00-10:25    Naoki Nakamura (Graduate School of Science, Tohoku Univ)*
Temporal and spatial variations of mode waters in the North Pacific

10:25-10:50    Shusaku Sugimoto (Frontier Research Institute for Interdisciplinary Science, Tohoku Univ.)*
Decadal variations of the TRMW along the 155°E repeat hydrographic section

10:50-11:15    Ryohei Yamaguchi (Graduate School of Science, Tohoku Univ)*
The relationship between summertime upper ocean stratificatin intensity and wintertime mixed layer depth in the North Pacific

11:15-11:40    Satoshi Kimura (Graduate School of Science, Tohoku Univ)*
Interannual variability of the winter low-SLP wedge over the Kuroshio Extension and its cause

11:40-12:00    Takahiro Toyoda (Meteorological Research Institute, JMA)
Interannual-decadal variability of wintertime mixed layer depths in the North Pacific
(and the official announcement)

Session 2  Coastal and operational activities <chair: Makoto Kashiwai ("Oyashioya")>

12:50-13:15    Takashi T. Sakamoto (AORI, Univ Tokyo)*
Numerical simulation of Otsuchi Bay II

13:15-13:40    Kan Nakamura (Sendai Regional Headquaters, Japan Meteor Agency)*
Forecasting technique of coastal sea surface temperature

13:40-14:05    Nariaki Hirose (Meteorological Research Institute, JMA)*
Introduction of Four-dimensional variational Ocean Re-Analysis (FORA) and evaluation of the performance

Session 3  Water-mass transport, mixing, nutrient supply <chair: Takahiro Toyoda (MRI)>

14:15-14:40    Kazuyuki Uehara (School of Marine Science and Technology, Tokai Univ), Eitarou Oka (Univ Tokyo), and Chiho Sukigara (Nagoya Univ)*
Daily variability of turbulent kinetic energy dissipation rate in the winter upper ocean

14:40-15:05    Yuta Murai (Graduate School of Science, Tohoku Univ.)*
Quantification of shift of Central Mode Water by mesoscale eddy

15:05-15:30    Yoshimasa Matsumura (Institute of Low Temperature Science, Hokkaido Univ)*
Modeling sediment-resuspension by online Lagrangian particle tracking

15:30-15:55    Sami Kato (Graduate School of Marine Science and Technology, Tokai Univ), Kazuyuki Uehara (Tokai Univ.), Chiho Sukigara (Nagoya Univ.), and Yoshikazu Sasai (JAMSTEC)*
Nutrient dynamics in the cyclonic eddy east off Taiwan

Session 4  Inter-gyre transport and subpolar region <chair: Yoshimasa Matsumura (Hokkaido Univ)>

16:05-16:30    Toru Miyama (Application Laboratory, JAMSTEC)*
Why does the Isoguchi Jet / the quasi-stationary jet exists?

16:30-16:55    Makoto Kashiwai (Fisheries Oceanography Reseach Studio "Oyashio-ya")*
Contribution of Deep Water to the formation of Intermediate Water in the Sea of Okhotsk
-Diagnoses from analyses on driving factors of seasonal cycle of water mass characteristics-

16:55-17:20    Yosuke Fujii (Meteorological Research Institute, JMA)*
Analysis of the pathway of the Kuroshio water to the Bering Sea using an adjoint model

After session

17:20-17:30    Discussion

18:30-         Welcome party at "Sanzuro-ya"

September 9th (Wed)

Session 5  Satellite and historical line data <chair: Shusaku Sugimoto (Tohoku Univ)>

9:00-9:25    Satoshi Matsuno (Graduate School of Marine Science and Technology, Tokai Univ), and Kazuyuki Uehara (Tokai Univ)*
Long-term variation of global sea surface temperature

9:25-9:50    Takato Nakai (Graduate School of Science, Tohoku Univ)*
Interannual variation of spatial distribution of North Pacific Tropical Water (NPTW) by mesoscale eddies

9:50-10:15    Hiroyuki Inoue (Global Environment and Marine Department, JMA)*
Enhanced freshening of North Pacific Central Water observed along the 137°E repeat hydrographic section

10:15-10:40    Eitarou Oka (AORI, Univ Tokyo)*
Decadal variability of Subtropical Mode Water modulating ocean acidification near Okinawa

After session

10:40-12:00    Discussion; Tour to the International Coastal Research Center

Joint Usage

Research meeting