{"id":"https://openalex.org/G5745374236","display_name":"Quantification of mixing hotspots in the Southern Ocean for accurate modeling of the global overturning circulation","description":"Global mapping of deep-ocean mixing is crucial for accurate modeling of the global overturning circulation. In this study, we conducted microstructure observations in the Southern Ocean with wind-induced mixing hotspots which cannot be expected to exist anywhere else in the world\u2019s oceans. We successfully obtained quite a few microstructure data from the sea surface down to the seabed using a newly developed microstructure profiler called VMP-X. Based on the results from these microstructure observations as well as accompanying numerical experiments, we next assessed the validity of the existing fine-scale parameterization of turbulent dissipation rates in the Southern Ocean. It has been shown that the existing fine-scale parameterizations tend to overestimate turbulent dissipation rates especially near the polar front of the Antarctic Circumpolar Current where mesoscale eddy activities are prominent.","funder_award_id":"15H02131","funder":{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","doi":"10.13039/501100001691"},"funded_outputs":["https://openalex.org/W1508556133","https://openalex.org/W1597450652","https://openalex.org/W1912549167","https://openalex.org/W2041478652","https://openalex.org/W2121916308","https://openalex.org/W2278747756","https://openalex.org/W2293804800","https://openalex.org/W2466877347","https://openalex.org/W2514736746","https://openalex.org/W2524427490","https://openalex.org/W2544700344","https://openalex.org/W2589059443","https://openalex.org/W2621341178","https://openalex.org/W2763670753","https://openalex.org/W2803190019","https://openalex.org/W2804578656","https://openalex.org/W2890190970","https://openalex.org/W2890314599","https://openalex.org/W2903134397","https://openalex.org/W2917096178","https://openalex.org/W3044010011","https://openalex.org/W3130120061","https://openalex.org/W3164154029"],"funded_outputs_count":23,"parent_awards":[],"sub_awards":[],"sub_awards_count":0,"amount":42250000.0,"currency":"JPY","amount_usd":351457.0,"amount_usd_basis":"daily_rate","recipients":[],"recipient_countries":[],"recipient_regions":[],"research_scope":{"is_research":true,"basis":"funder_default","tier":1},"funding_type":"research","funder_scheme":"Grant-in-Aid for Scientific Research (A)","start_date":"2015-04-01","end_date":"2018-03-31","start_year":2015,"end_year":2018,"landing_page_url":"https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15H02131/","doi":null,"provenance":"kaken","lead_investigator":{"given_name":"Toshiyuki","family_name":"HIBIYA","orcid":null,"role_start":null,"affiliation":{"name":"The University of Tokyo","country":"Japan","ids":[{"id":"https://nrid.nii.ac.jp/nrid/1000080192714","type":"nrid","asserted_by":"kaken"}]},"author":{"id":"https://openalex.org/A5044648865","display_name":"Toshiyuki Hibiya","orcid":"https://orcid.org/0000-0002-3371-2093"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}]},"co_lead_investigator":null,"investigators":null,"works_api_url":"https://api.openalex.org/works?filter=awards.id:G5745374236","primary_topic":null,"topics":null,"institution_awarded":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"updated_date":"2026-11-11T03:01:08.000Z","created_date":"2026-07-13T04:17:19.000Z"}