A Newly Observed Deep Countercurrent in the Subtropical Northwest Pacific SCIE SCOPUS

DC Field Value Language
dc.contributor.author Azminuddin, Fuad -
dc.contributor.author Jeon, Dongchull -
dc.contributor.author Kim, Young Ho. -
dc.contributor.author Jang, Chan Joo -
dc.contributor.author Park, Jae Hyoung -
dc.date.accessioned 2022-01-19T10:37:21Z -
dc.date.available 2022-01-19T10:37:21Z -
dc.date.created 2021-08-17 -
dc.date.issued 2021-07 -
dc.identifier.issn 2169-9275 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/42192 -
dc.description.abstract The existence of a deep countercurrent in the subtropical northwest Pacific, named Subtropical Deep Countercurrent (STDCC), has been revealed by moored current-meter data obtained from a buoy system (similar to 21.6 degrees N, similar to 132.8 degrees E) during 4 years (2010-2014). The climatological average of Argo-based absolute geostrophic velocities and ocean reanalyzes have further confirmed the spatial picture of the eastward-flowing STDCC. STDCC is identified as a time-mean feature in the latitudinal range of 19 degrees-25 degrees N with a meridional scale of 200-300 km that persistently appears from 125 degrees to 180 degrees E and slightly shifts to the north as it goes east. Vertically, STDCC is mostly found below 1,000 m with its core located between the depths of 1,250 and 2,000 m, which corresponds to the undercurrent's meridional pattern with increasing depth northward and a meridional space of 2 degrees-4 degrees. Nevertheless, STDCC is distinctive where it lies along similar to 27.6 - sigma theta, which is deeper than the North Equatorial Undercurrent's density layer (similar to 27.0 - sigma theta). The mean velocity of STDCC at 2,000 m observed by mooring measurements was approximately 0.2 +/- 0.15 cm s(-1) with a maximum speed of approximately 5.59 cm s(-1). The ocean reanalyzes also support the existence of STDCC with mean velocity of approximately 0.2-0.6 cm s(-1) west of 145 degrees E and can be as large as 1.6 cm s(-1) at the eastern region. The results show that STDCC is closely related to the westward-propagating eddies. Our finding emphasizes that the convergence of the cyclonic and anticyclonic eddies possibly generates time-mean zonally elongated eastward flows forming STDCC feature. -
dc.description.uri 1 -
dc.language English -
dc.publisher AMER GEOPHYSICAL UNION -
dc.title A Newly Observed Deep Countercurrent in the Subtropical Northwest Pacific -
dc.type Article -
dc.citation.title JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS -
dc.citation.volume 126 -
dc.citation.number 7 -
dc.contributor.alternativeName Fuad -
dc.contributor.alternativeName 전동철 -
dc.contributor.alternativeName 장찬주 -
dc.contributor.alternativeName 박재형 -
dc.identifier.bibliographicCitation JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v.126, no.7 -
dc.identifier.doi 10.1029/2021JC017272 -
dc.identifier.scopusid 2-s2.0-85112001115 -
dc.identifier.wosid 000681412200023 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus EQUATORIAL UNDERCURRENT JETS -
dc.subject.keywordPlus ZONAL FLOWS -
dc.subject.keywordPlus OCEAN -
dc.subject.keywordPlus CLIMATE -
dc.subject.keywordPlus EDDIES -
dc.subject.keywordPlus DRIVEN -
dc.subject.keywordPlus SUBTHERMOCLINE -
dc.subject.keywordPlus CIRCULATION -
dc.subject.keywordPlus CURRENTS -
dc.subject.keywordPlus SERIES -
dc.subject.keywordAuthor General ocean circulation model -
dc.subject.keywordAuthor North Equatorial Undercurrent -
dc.subject.keywordAuthor Subtropical Deep Countercurrent -
dc.subject.keywordAuthor Sverdrup balance -
dc.subject.keywordAuthor westward-propagating eddies -
dc.relation.journalWebOfScienceCategory Oceanography -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Oceanography -
Appears in Collections:
Ocean Climate Solutions Research Division > Ocean Circulation & Climate Research Department > 1. Journal Articles
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