Subduction/obduction rate in the North Pacific diagnosed by an eddy-resolving model

Ventilation in the North Pacifi c is examined using data from the eddy-resolving 1/12° global HYbrid Coordinate Ocean Model（HYCOM） and Quik SCAT wind stress data. For the period January 2004 to December 2006 and area 20°–40°N, the total annual subduction rate is estimated at 79 Sv, and the obduction...

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Bibliographic Details
Published inChinese journal of oceanology and limnology Vol. 34; no. 4; pp. 835 - 846
Main Author 刘玲玲 黄瑞新 王凡
Format Journal Article
LanguageEnglish
Published Heidelberg Science Press 01.07.2016
Springer Nature B.V
Subjects
Components
Earth and Environmental Science
Earth Sciences
environmental models
Frequency
General circulation models
Marine
Mixed layer
Mixed layer depth
Obduction
Ocean circulation
Ocean currents
Ocean models
Oceanography
Physics
Subduction
temporal variation
Ventilation
Vortices
wind
Wind stress
俯冲
北太平洋
数据检查
模型诊断
海洋模式
涡流场
混合坐标
混合层深度
IN, North Pacific
eddy-resolved
subduction
high frequency
obduction
North Pacific
Online AccessGet full text
ISSN0254-4059
2096-5508
1993-5005
2523-3521
DOI10.1007/s00343-016-5036-y

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Summary:Ventilation in the North Pacifi c is examined using data from the eddy-resolving 1/12° global HYbrid Coordinate Ocean Model（HYCOM） and Quik SCAT wind stress data. For the period January 2004 to December 2006 and area 20°–40°N, the total annual subduction rate is estimated at 79 Sv, and the obduction rate 41 Sv. Resolving the small-scale and high-frequency components of the eddy fi eld can increase the subduction rate by 42 Sv, and obduction by 31 Sv. Lateral induction is the dominant contributor to enhancement of subduction/obduction, and temporal change of mixed layer depth has a secondary role. Further analysis indicates that the high-frequency components of the eddy fi eld, especially those with timescale shorter than 10 days, are the most critical factor enhancing subduction/obduction.
Bibliography:37-1150
subduction;obduction;eddy-resolved;high frequency;North Pacific
Ventilation in the North Pacifi c is examined using data from the eddy-resolving 1/12° global HYbrid Coordinate Ocean Model（HYCOM） and Quik SCAT wind stress data. For the period January 2004 to December 2006 and area 20°–40°N, the total annual subduction rate is estimated at 79 Sv, and the obduction rate 41 Sv. Resolving the small-scale and high-frequency components of the eddy fi eld can increase the subduction rate by 42 Sv, and obduction by 31 Sv. Lateral induction is the dominant contributor to enhancement of subduction/obduction, and temporal change of mixed layer depth has a secondary role. Further analysis indicates that the high-frequency components of the eddy fi eld, especially those with timescale shorter than 10 days, are the most critical factor enhancing subduction/obduction.
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ISSN:0254-4059
2096-5508
1993-5005
2523-3521
DOI:10.1007/s00343-016-5036-y