JpGU-AGU Joint Meeting 2017

Session information

[EE] Oral

A (Atmospheric and Hydrospheric Sciences) » A-OS Ocean Sciences & Ocean Environment

[A-OS15] [EE] Ocean Mixing Matters

Sun. May 21, 2017 10:45 AM - 12:15 PM 302 (International Conference Hall 3F)

convener:Toshiyuki Hibiya(Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo), Louis St Laurent(Woods Hole Oceanographic Institution), Ren-Chieh Lien(University of Washington, Seattle, WA, USA), Robin Ann Robertson(University of New South Wales Canberra), Chairperson:Ren-Chieh Lien(University of Washington, Seattle, WA, USA), Chairperson:Toshiyuki Hibiya(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Mixing plays critical roles in the ocean, affecting key physical, biological, and chemical processes. The forces and mechanisms leading to mixing processes vary spatially both within the water column and between the coastal and open ocean. Near the surface, wind and cooling convection are the key driving force. Mixing in the surface mixed layer modifies the sea surface temperature, which in turn affects air-sea interaction processes. Deep ocean mixing, on the other hand, is driven by tides, boundary effects, and interactions of currents with topography. Deep mixing is an important factor in maintaining vertical stratification and in determining the strength and structure of the global overturning circulation. Both surface and deep ocean mixing are impacted by and, in turn, impact climate change. Ocean mixing is key for water mass formation, such as that of North Pacific Intermediate Water and Subtropical Mode Water. Planktonic ecosystems are well known to be controlled through nutrient pumping associated with ocean mixing. Nevertheless, vertical mixing, even the reasonably well-understood tidal mixing, is not parameterized well in ocean and climate models. As grid resolutions for general ocean circulation and climate models increase, accurate sub-grid scale mixing in the models will become even more crucial.

This session encompasses ocean mixing of all aspects, all scales, and the entire water column: from theory, observations, and modelling; from microstructure to large eddies; from the surface through the interior to the near boundary benthic mixing.

10:45 AM - 11:00 AM

*DAISUKE HASEGAWA1, Takeshi Matsuno2, Eisuke Tsutumi2, Tomoharu Senjyu2, Hirohiko Nakamura3, Toru Kobari3, Ayako Nishina3, Naoki Yoshie4, Xinyu Guo4, Miwa Nakagawa4, Takeyoshi Nagai5, Takahiro Tanaka6, Ichiro Yasuda6 (1.Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, 2.The Research Institute for Applied Mechanics, Kyusyu University, 3.Faculty of Fisheries, Kagoshima University, 4.Center for Marine Environmental Studies, Ehime University, 5.Tokyo University of Marine Science and Technology, 6.Atmosphere and Ocean Research Institute, The University of Tokyo)

11:00 AM - 11:15 AM

*Takeyoshi Nagai1, DAISUKE HASEGAWA2, Takehiro Tanaka3, Hirohiko Nakamura4, Eisuke Tsutsumi5 (1.Department of Ocean Sciences, Tokyo University of Marine Science and Technology, 2.Tohoku National Fisheries Research Institute, 3.Atmosphere Ocean Research Institute, 4.Faculty of Fisheries, Kagoshima University, 5.Research Institute for Applied Mechanics Kyushu University)




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