Position variability of the Kuroshio Extension sea surface temperature front

WANG Yanxin; YANG Xiaoyi; HU Jianyu

doi:10.1007/s13131-016-0909-7

黑潮延伸体海表温度锋位置的变化特征

doi: 10.1007/s13131-016-0909-7

厦门大学海洋与地球学院, 近海海洋环境科学国家重点实验室, 厦门, 361102

基金项目: The National Basic Research Program of China under contract Nos 2015CB954004 and 2012CB417402; the National Natural Science Foundation of China under contract Nos 41576178 and U1405233.

计量
- 文章访问数: 1304
- HTML全文浏览量: 44
- PDF下载量: 699
- 被引次数: 0
出版历程
- 收稿日期: 2016-01-11
- 修回日期: 2016-03-03

Position variability of the Kuroshio Extension sea surface temperature front

1 State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China

摘要

摘要: 利用1993-2013年高分辨率的海表温度（SST）资料判断141-158°E经度范围内黑潮延伸体海表温度锋面（KEF）的位置，并描述了KEF位置的季节、月份以及年际-年代际变化特征。KEF的纬度位置在不同经度上存在差异：其中KEF最靠西的部分（141-144°E）相对稳定，最靠东的部分（153-158°E）显示出最大振幅的南北位移。根据KEF位置在各经度上的标准差大小，可将KEF（141-158°E）分为三段：KEF西段（141-144°E）、KEF中段（144-153°E）、KEF东段（153-158°E）。分析表明KEF西段的位置由年代际变化所主导，而KEF中段和KEF东段的位置同时表现出显著的年际、年代际时间尺度的变化。此外，KEF西段的位置与KEF的路径长度有很好的对应关系。我们还进一步讨论了可能引起KEF西段年代际振荡的模态，KEF西段的位置与太平洋年代际振荡（PDO）指数、北太平洋环流振荡（NPGO）指数分别存在滞后40、33个月的显著相关。
- 黑潮延伸体 /
- 黑潮延伸体锋面 /
- SST
Abstract: High spatial resolution sea surface temperature (SST) data from 1993 to 2013 are used to detect the position of the Kuroshio Extension sea surface temperature front (KEF) from 141°E to 158°E, and the seasonal, monthly and interannual-to-decadal variations of the KEF position are investigated. The latitudinal position of the KEF varies with longitudes:the westernmost part of the KEF from 141°E to 144°E is relatively stable, whereas the easternmost part from 153°E to 158°E exhibits the largest amplitude of its north-south displacement. In the light of the magnitudes of the standard deviations at longitudes, then the KEF is divided into three sections:western part of the KEF (KEFw, 141°-144°E), central part of the KEF (KEFc, 144°-153°E) and eastern part of the KEF (KEFe, 153°-158°E). Further analysis reveals that the KEFw position is dominated by the decadal variability, while the KEFc and KEFe positions change significantly both on interannual and decadal time scales. In addition, the KEFw position is well correlated with the KEF path length. The possible mode leading to the decadal oscillation of the KEFw is further discussed. The KEFw position exhibits significant connections with the Pacific decadal oscillation (PDO) index and the north Pacific gyre oscillation (NPGO) index with a time lag of 40 and 33 months, respectively.
- Kuroshio Extension /
- Kuroshio Extension front /
- sea surface temperature

HTML全文

参考文献(21)

Ceballos L I, Di Lorenzo E, Hoyos C D. 2009. North Pacific gyre oscil-lation synchronizes climate fluctuations in the eastern and western boundary systems. Journal of Climate, 22(19): 5163-5174

Chen Shuiming. 2008. The Kuroshio Extension front from satellite sea surface temperature measurements. Journal of Oceanography, 64(6):891-897

Di Lorenzo E, Schneider N, Cobb K M, et al. 2008. North Pacific gyre oscillation links ocean climate and ecosystem change. Geo-physical Research Letters, 35(8):L08607

Guo Chunya. 2012. The interannual variation of atmospheric re-sponse to winter Kuroshio Extension SST front (in Chinese)[dissertation]. Qingdao:Ocean University of China

Kelly K A, Small R J, Samelson R M, et al. 2010. Western boundary currents and frontal air-sea interaction:Gulf Stream and Kur-oshio Extension. Journal of Climate, 23(21):5644-5667

Ma Jing, Xu Haiming. 2012. The relationship between meridional dis-placement of the oceanic front in Kuroshio Extension during spring and atmospheric circulation in East Asia. Journal of the Meteorological Sciences (in Chinese), 32(4):375-384

Mantua N J, Hare S R, Zhang Yuan, et al. 1997. A Pacific interdecadal climate oscillation with impacts on salmon production. Bullet-in of the American Meteorological Society, 78(6):1069-1079

Mizuno K, White W B. 1983. Annual and interannual variability in the Kuroshio current system. Journal of Physical Oceanography, 13(10):1847-1867

Nakamura H, Kazmin A S. 2003. Decadal changes in the north Pacific oceanic frontal zones as revealed in ship and satellite observa-tions. Journal of Geophysical Research:Oceans, 108(C3):3078

Nakamura H, Lin G, Yamagata T. 1997. Decadal climate variability in the north Pacific during the recent decades. Bulletin of the American Meteorological Society, 78(10):2215-2225

Qiu Bo. 2003. Kuroshio Extension variability and forcing of the Pa-cific decadal oscillations:responses and potential feedback. Journal of Physical Oceanography, 33(12):2465-2482

Qiu Bo, Chen Shuiming. 2005. Eddy-induced heat transport in the subtropical North Pacific from Argo, TMI, and altimetry meas-urements. Journal of Physical Oceanography, 35(4):458-473

Qiu Bo, Chen Shuiming. 2010. Eddy-mean flow interaction in the decadally modulating Kuroshio Extension system. Deep-Sea Research:Part Ⅱ. Topical Studies in Oceanography, 57(13/14):1098-1110

Qiu Bo, Chen Shuiming. 2011. Effect of decadal Kuroshio Extension jet and eddy variability on the modification of north Pacific in-termediate water. Journal of Physical Oceanography, 41(3):503-515

Reynolds R W, Smith T M, Liu Chunying, et al. 2007. Daily high-resol-ution-blended analyses for sea surface temperature. Journal of Climate, 20(22):5473-5496

Rio M H, Mulet S, Picot N. 2014. Beyond GOCE for the ocean circula-tion estimate:synergetic use of altimetry, gravimetry, and in situ data provides new insight into geostrophic and Ekman cur-rents. Geophysical Research Letters, 41(24):8918-8925

Sasaki Y N, Minobe S, Schneider N. 2013. Decadal response of the Kuroshio Extension jet to Rossby waves:observation and Thin-Jet theory. Journal of Physical Oceanography, 43(2):442-456

Seager R, Kushnir Y, Naik N H, et al. 2001. Wind-driven shifts in the latitude of the Kuroshio-Oyashio Extension and generation of SST anomalies on decadal time scales. Journal of Climate, 14(22):4249-4265

Sugimoto S, Hanawa K. 2012. Relationship between the path of the Kuroshio in the south of Japan and the path of the Kuroshio Ex-tension in the east. Journal of Oceanography, 68(1):219-225

Taguchi B, Xie Shangping, Schneider N, et al. 2007. Decadal variabil-ity of the Kuroshio Extension:observations and an eddy-resolv-ing model hindcast. Journal of Climate, 20(11):2357-2377

Yasuda I. 2003. Hydrographic structure and variability in the Kurosh-io-Oyashio transition area. Journal of Oceanography, 59(4):389-402

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 1304
HTML全文浏览量: 44
PDF下载量: 699
被引次数: 0

黑潮延伸体海表温度锋位置的变化特征

doi: 10.1007/s13131-016-0909-7

计量

出版历程

Position variability of the Kuroshio Extension sea surface temperature front

计量

出版历程

目录