Intraseasonal variability of the Kuroshio observed via mooring at 18°N

Xin YUAN; Qingye WANG; Jie MA; Shijian HU; Dunxin HU

doi:10.1007/s00343-023-2334-z

Your Location：

Home >

Browse articles >

Intraseasonal variability of the Kuroshio observed via mooring at 18°N

Physics | Updated：2024-10-11

- Intraseasonal variability of the Kuroshio observed via mooring at 18°N
- Intraseasonal variability of the Kuroshio observed via mooring at 18°N
- 海洋湖沼学报(英文) 2024年42卷第2期页码：468-483
- Affiliations：
  
  1.Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  2.University of Chinese Academy of Sciences, Beijing 100049, China
  3.Laoshan Laboratory, Qingdao 266237, China
  4.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Author bio：
  
  wangqy@qdio.ac.cn
  dxhu@qdio.ac.cn
- Funds：
  
  the National Natural Science Foundation of China(41976011;42022040);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB42010102);the Shandong Provincial Natural Science Foundation(ZR2020JQ18);Shijian HU is a member of the CAS Interdisciplinary Innovation Team(JCTD-2020-12)
- DOI：10.1007/s00343-023-2334-z
  中图分类号：
- 收稿：2022-11-29，
  
  网络首发：2023-03-29，
  
  纸质出版：2024-03-01
- Accepted：
Scan QR Code
Intraseasonal variability of the Kuroshio observed via mooring at 18°N[J]. 海洋湖沼学报(英文), 2024,42(2):468-483.

YUAN Xin,WANG Qingye,MA Jie,et al.Intraseasonal variability of the Kuroshio observed via mooring at 18°N[J].Journal of Oceanology and Limnology,2024,42(02):468-483.
Intraseasonal variability of the Kuroshio observed via mooring at 18°N[J]. 海洋湖沼学报(英文), 2024,42(2):468-483. DOI： 10.1007/s00343-023-2334-z.

YUAN Xin,WANG Qingye,MA Jie,et al.Intraseasonal variability of the Kuroshio observed via mooring at 18°N[J].Journal of Oceanology and Limnology,2024,42(02):468-483. DOI： 10.1007/s00343-023-2334-z.

摘要

Abstract

Insufficient observations near the origin of the Kuroshio have led to incomplete understanding of the intraseasonal variability (ISV) of the Kuroshio. Direct measurements of the Kuroshio velocity were performed with an array of three profiler moorings (122.7°E

123°E

and 123.3°E) along 18°‍N from January 2018 to February 2020. The ISV of the Kuroshio at 18°N was investigated based on a combination of mooring observations and global high-resolution HYbrid Coordinate Ocean Model reanalysis data. The estimated time-averaged transport in the upper 350 m across the observation transect was 6.5±2.6 Sv (1.0 Sv=10

/s). Two significant ISV peaks at 50‍‍‍‍‍‍–‍‍60 and ~100 d were recognized in the power spectra of the meridional velocity and transport. Further analysis indicated that the ISV at 50‍‍‍‍‍‍–‍‍60 d was caused by westward-propagating eddies at average propagation speed of ~13 cm/s and wavelength of ~635 km. Another ISV peak at ~100 d was mainly caused by northward-propagating eddies generated in the North Equatorial Current region. Further investigation indicated that the ISV of the Kuroshio at 18°‍N is dominated

by meridional transport

rather than by the zonal migration of the Kuroshio main axis. Our findings provide a better understanding of the ISV of the Kuroshio east of Luzon Island.

关键词

Keywords

references

Andres M , Mensah V , Jan S et al . 2017 . Downstream evolution of the Kuroshio's time-varying transport and velocity structure . Journal of Geophysical Research: Oceans , 122 ( 5 ): 3519 - 3542 , https://doi.org/10.1002/2016JC012519 https://doi.org/10.1002/2016JC012519 .

Andres M , Wimbush M , Park J H et al . 2008 . Observations of Kuroshio flow variations in the East China Sea . Journal of Geophysical Research: Oceans , 113 ( C5 ): C05113 , https://doi.org/10.1029/2007JC004200 https://doi.org/10.1029/2007JC004200 .

Centurioni L R , Niiler P P , Lee D K . 2004 . Observations of inflow of Philippine Sea surface water into the South China Sea through the Luzon Strait . Journal of Physical Oceanography , 34 ( 1 ): 113 - 121 , https://doi.org/10.1175/1520-0485(2004)034<0113:Ooiops>2.0.Co;2. https://doi.org/10.1175/1520-0485(2004)034<0113:Ooiops>2.0.Co;2.

Chang M H , Jan S , Mensah V et al . 2018 . Zonal migration and transport variations of the Kuroshio east of Taiwan induced by eddy impingements . Deep Sea Research Part I: Oceanographic Research Papers , 131 : 1 - 15 , https://doi.org/10.1016/j.dsr.2017.11.006 https://doi.org/10.1016/j.dsr.2017.11.006 .

Chen Z H , Wu L X , Qiu B et al . 2015 . Strengthening Kuroshio observed at its origin during November 2010 to October 2012 . Journal of Geophysical Research: Oceans , 120 ( 4 ): 2460 - 2470 , https://doi.org/10.1002/2014jc010590 https://doi.org/10.1002/2014jc010590 .

Duchon C E . 1979 . Lanczos filtering in one and two dimensions . Journal of Applied Meteorology and Climatology , 18 ( 8 ): 1016 - 1022 , https://doi.org/10.1175/1520-0450(1979)018<1016:LFIOAT>2.0.CO;2. https://doi.org/10.1175/1520-0450(1979)018<1016:LFIOAT>2.0.CO;2.

Gordon A L , Flament P , Villanoy C et al . 2014 . The nascent Kuroshio of Lamon Bay . Journal of Geophysical Research: Oceans , 119 ( 7 ): 4251 - 4263 , https://doi.org/10.1002/2014jc009882 https://doi.org/10.1002/2014jc009882 .

Hu D X , Hu S J , Wu L X et al . 2013 . Direct measurements of the luzon undercurrent . Journal of Physical Oceanography , 43 ( 7 ): 1417 - 1425 , https://doi.org/10.1175/Jpo-D-12-0165.1 https://doi.org/10.1175/Jpo-D-12-0165.1 .

Hu D X , Wang F , Wu L X et al . 2011 . Northwestern Pacific Ocean Circulation and Climate Experiment (NPOCE) Science/Implementation Plan . China Ocean Press , Beijing .

Hwang C , Wu C R , Kao R . 2004 . TOPEX/Poseidon observations of mesoscale eddies over the Subtropical Countercurrent: Kinematic characteristics of an anticyclonic eddy and a cyclonic eddy . Journal of Geophysical Research: Oceans , 109 ( C8 ): C08013 , https://doi.org/10.1029/2003jc002026 https://doi.org/10.1029/2003jc002026 .

Imawaki S , Uchida H , Ichikawa H et al . 2001 . Satellite altimeter monitoring the Kuroshio transport south of Japan . Geophysical Research Letters , 28 ( 1 ): 17 - 20 , https://doi.org/10.1029/2000gl01179 https://doi.org/10.1029/2000gl01179 .

Jan S , Mensah V , Andres M et al . 2017 . Eddy-kuroshio interactions: local and remote effects . Journal of Geophysical Research: Oceans , 122 ( 12 ): 9744 - 9764 , https://doi.org/10.1002/2017jc013476 https://doi.org/10.1002/2017jc013476 .

Jan S , Yang Y J , Wang J et al . 2015 . Large variability of the Kuroshio at 23.75°‍N east of Taiwan . Journal of Geophysical Research: Oceans , 120 ( 3 ): 1825 - 1840 , https://doi.org/10.1002/2014jc010614 https://doi.org/10.1002/2014jc010614 .

Johns W E , Lee T N , Zhang D X et al . 2001 . The Kuroshio east of Taiwan: moored transport observations from the WOCE PCM-1 array . Journal of Physical Oceanography , 31 ( 4 ): 1031 - 1053 , https://doi.org/10.1175/1520-0485(2001)031<1031:Tkeotm>2.0.Co;2. https://doi.org/10.1175/1520-0485(2001)031<1031:Tkeotm>2.0.Co;2.

Kakinoki K , Imawaki S , Uchida H et al . 2008 . Variations of Kuroshio geostrophic transport south of Japan estimated from long-term IES observations . Journal of Oceanography , 64 ( 3 ): 373 - 384 , https://doi.‍org/10.1007/s10872-008-0030-4 https://doi.‍org/10.1007/s10872-008-0030-4 . https://do 10.1007/s10872-008-0030-4 http://dx.doi.org/10.1007/s10872-008-0030-4

Lee I H , Ko D S , Wang Y H et al . 2013 . The mesoscale eddies and Kuroshio transport in the western North Pacific east of Taiwan from 8-year (2003-2010) model reanalysis . Ocean Dynamics , 63 ( 9-10 ): 1027 - 1040 , https://doi.org/10.1007/s10236-013-0643-z https://doi.org/10.1007/s10236-013-0643-z .

Liang W D , Yang Y J , Tang T Y et al . 2008 . Kuroshio in the Luzon Strait . Journal of Geophysical Research: Oceans , 113 ( C8 ): C08048 , https://doi.org/10.1029/2020jc016849 https://doi.org/10.1029/2020jc016849 .

Lien R C , Ma B , Cheng Y H et al . 2014 . Modulation of Kuroshio transport by mesoscale eddies at the Luzon Strait entrance . Journal of Geophysical Research: Oceans , 119 ( 4 ): 2129 - 2142 , https://doi.org/10.1002/2013jc009548 https://doi.org/10.1002/2013jc009548 .

Liu Y , Dong C M , Guan Y P et al . 2012 . Eddy analysis in the subtropical zonal band of the North Pacific Ocean . Deep Sea Research Part I: Oceanographic Research Papers , 68 : 54 - 67 , https://doi.org/10.1016/j.dsr.2012.06.001 https://doi.org/10.1016/j.dsr.2012.06.001 .

Ma X H , Jing Z , Chang P et al . 2016 . Western boundary currents regulated by interaction between ocean eddies and the atmosphere . Nature , 535 ( 7613 ): 533 - 537 , https://doi.org/10.1038/nature18640 https://doi.org/10.1038/nature18640 .

Mensah V , Jan S , Andres M , et al . 2020 . Response of the Kuroshio east of Taiwan to mesoscale eddies and upstream variations . Journal of Oceanography , 76 ( 4 ): 271 - 288 , https://doi.org/10.1007/s10872-020-00544-8 https://doi.org/10.1007/s10872-020-00544-8 .

Mensah V , Jan S , Chiou M D et al . 2014 . Evolution of the Kuroshio tropical water from the Luzon Strait to the east of Taiwan . Deep Sea Research Part I: Oceanographic Research Papers , 86 : 68 - 81 , https://doi.org/10.1016/j.dsr.2014.01.005 https://doi.org/10.1016/j.dsr.2014.01.005 .

Nitani H . 1972 . Beginning of the Kuroshio . In: Stommel H, Yoshida K eds. Kuroshio: Its Physical Aspects . University of Tokyo Press , Tokyo , p. 129 - 163 . https://do 10.5026/jgeography.81.2_81 http://dx.doi.org/10.5026/jgeography.81.2_81

Qiu B . 1999 . Seasonal eddy field modulation of the North Pacific subtropical countercurrent: TOPEX/Poseidon observations and theory . Journal of Physical Oceanography , 29 ( 10 ): 2471 - 2486 , https://doi.org/10.1175/1520-0485(1999)029<2471:Sefmot>2.0.Co;2. https://doi.org/10.1175/1520-0485(1999)029<2471:Sefmot>2.0.Co;2.

Qiu B , Chen S M . 2005 . Variability of the Kuroshio Extension jet, recirculation gyre, and mesoscale eddies on decadal time scales . Journal of Physical Oceanography , 35 ( 11 ): 2090 - 2103 , https://doi.org/10.1175/Jpo2807.1 https://doi.org/10.1175/Jpo2807.1 .

Qiu B , Chen S M . 2010 . Interannual variability of the north pacific subtropical countercurrent and its associated mesoscale eddy field . Journal of Physical Oceanography , 40 ( 1 ): 213 - 225 , https://doi.org/10.1175/2009jpo4285.1 https://doi.org/10.1175/2009jpo4285.1 .

Roemmich D , Gilson J . 2001 . Eddy Transport of heat and thermocline waters in the North Pacific: a key to interannual/decadal climate variability? Journal of Physical Oceanography , 31 ( 3 ): 675 - 687 , https://doi.org/10.1175/1520-0485(2001)031<0675:ETOHAT>2.0.CO;2. https://doi.org/10.1175/1520-0485(2001)031<0675:ETOHAT>2.0.CO;2.

Rudnick D L , Jan S , Centurioni L et al . 2011 . Seasonal and Mesoscale Variability of the Kuroshio Near Its Origin . Oceanography , 24 ( 4 ): 52 - 63 , https://doi.org/10.5670/oceanog.2011.94 https://doi.org/10.5670/oceanog.2011.94 .

Rudnick D L , Jan S , Lee C M . 2015 . A new look at circulation in the western north Pacific: introduction to the special issue . Oceanography , 28 ( 4 ): 16 - 23 , https://doi.org/10.5670/oceanog.2015.77 https://doi.org/10.5670/oceanog.2015.77 .

Tsai C J , Andres M , Jan S et al . 2015 . Eddy-Kuroshio interaction processes revealed by mooring observations off Taiwan and Luzon . Geophysical Research Letters , 42 ( 19 ): 8098 - 8105 , https://doi.org/10.1002/2015gl065814 https://doi.org/10.1002/2015gl065814 .

Wang J , Oey L Y . 2016 . Seasonal exchanges of the kuroshio and shelf waters and their impacts on the shelf currents of the east China Sea . Journal of Physical Oceanography , 46 ( 5 ): 1615 - 1632 , https://doi.org/10.1175/Jpo-D-15-0183.1 https://doi.org/10.1175/Jpo-D-15-0183.1 .

Wang Q , Tang Y M , Pierini S , et al . 2017 . Effects of singular-vector-type initial errors on the short-range prediction of Kuroshio extension transition processes . Journal of Climate , 30 ( 15 ): 5961 - 5983 , https://doi.org/10.1175/Jcli-D-16-0305.1 https://doi.org/10.1175/Jcli-D-16-0305.1 .

Wang Q Y , Yuan X , Hu D X et al . 2021 . Stronger intraseasonal variability observed below the seasonal thermocline in the Kuroshio East of Taiwan during 2014 and 2015 . Journal of Geophysical Research: Oceans , 126 ( 7 ): e2021 JC 017194 , https://doi.org/10.1029/2021JC017194 https://doi.org/10.1029/2021JC017194 .

Wang Q Y , Zhai F G , Hu D X . 2014 . Variations of Luzon Undercurrent from observations and numerical model simulations . Journal of Geophysical Research: Oceans , 119 ( 6 ): 3792 - 3805 , https://doi.org/10.1002/2013jc009694 https://doi.org/10.1002/2013jc009694 .

Yan X M , Kang D J , Pang C G et al . 2022 . Energetics analysis of the eddy-Kuroshio interaction east of Taiwan . Journal of Physical Oceanography , 52 ( 4 ): 647 - 664 , https://doi.org/10.1175/jpo-d-21-0198.1 https://doi.org/10.1175/jpo-d-21-0198.1 .

Yang D Z , Yin B S , Liu Z L et al . 2012 . Numerical study on the pattern and origins of Kuroshio branches in the bottom water of southern East China Sea in summer . Journal of Geophysical Research: Oceans , 117 ( C2 ): C02014 , https://doi.org/10.1029/2011jc007528 https://doi.org/10.1029/2011jc007528 .

Yang G , Wang F , Li Y L et al . 2013 . Mesoscale eddies in the northwestern subtropical Pacific Ocean: statistical characteristics and three-dimensional structures . Journal of Geophysical Research: Oceans , 118 ( 4 ): 1906 - 1925 , https://doi.org/10.1002/jgrc.20164 https://doi.org/10.1002/jgrc.20164 .

Yang Y , Liu C T , Hu J H et al . 1999 . Taiwan current (Kuroshio) and impinging eddies . Journal of Oceanography , 55 ( 5 ): 609 - 617 , https://doi.org/10.1023/a:1007892819134 https://doi.org/10.1023/a:1007892819134 .

Zhang D X , Lee T N , Johns W E et al . 2001 . The Kuroshio east of Taiwan: modes of variability and relationship to interior ocean mesoscale eddies . Journal of Physical Oceanography , 31 ( 4 ): 1054 - 1074 , https://doi.org/10.1175/1520-0485(2001)031<1054:Tkeotm>2.0.Co;2. https://doi.org/10.1175/1520-0485(2001)031<1054:Tkeotm>2.0.Co;2.

Zhang Z W , Zhao W , Tian J W et al . 2015 . Spatial structure and temporal variability of the zonal flow in the Luzon Strait . Journal of Geophysical Research: Oceans , 120 ( 2 ): 759 - 776 , https://doi.org/10.1002/2014jc010308 https://doi.org/10.1002/2014jc010308 .

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Path transition of the western boundary current with a gap due to mesoscale eddies: a 1.5-layer, wind-driven experiment

Zooplankton community response to eddy during dinoflagellate Noctiluca scintillans blooms off Pakistan, northern Arabian Sea

Current observation and analysis based on mooring systems in the Andaman Sea

Effects of multiple dynamic processes on chlorophyll variation in the Luzon Strait in summer 2019 based on glider observation

高压涡轮封严流与主流相互作用的机理研究