A dual-period response of the Kuroshio Extension SST to Aleutian Low activity in the winter season

YU Peilong; ZHANG Lifeng; LIU Hu; LIU Xing; ZHU Juan

doi:10.1007/s13131-017-1104-1

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Article Navigation > Acta Oceanologica Sinica > 2017 > 36(9): 1-9

YU Peilong, ZHANG Lifeng, LIU Hu, LIU Xing, ZHU Juan. A dual-period response of the Kuroshio Extension SST to Aleutian Low activity in the winter season[J]. Acta Oceanologica Sinica, 2017, 36(9): 1-9. doi: 10.1007/s13131-017-1104-1

Citation:

YU Peilong, ZHANG Lifeng, LIU Hu, LIU Xing, ZHU Juan. A dual-period response of the Kuroshio Extension SST to Aleutian Low activity in the winter season[J]. Acta Oceanologica Sinica, 2017, 36(9): 1-9. doi: 10.1007/s13131-017-1104-1

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A dual-period response of the Kuroshio Extension SST to Aleutian Low activity in the winter season

doi: 10.1007/s13131-017-1104-1

1.
College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China
2.
No. 61741 Troops of PLA, Beijing 100025, China
3.
Maritime Environment Project Office, Beijing 100081, China

Received Date: 2016-10-12

Abstract

Abstract

Based on our previous work, the winter sea surface temperature (SST) in the Kuroshio Extension (KE) region showed significant variability over the past century with periods of ~6 a between 1930 and 1950 and ~10 a between 1980 and 2009. How the activity of the Aleutian Low (AL) induces this dual-period variability over the two different timespans is further investigated here. For the ~6 a periodicity during 1930-1950, negative wind stress curl (WSC) anomalies in the central subtropical Pacific associated with an intensified AL generate positive sea surface height (SSH) anomalies. When these wind-induced SSH anomalies propagate westwards to the east of Taiwan, China two years later, positive velocity anomalies appear around the Kuroshio to the east of Taiwan and then the mean advection via this current of velocity anomalies leads to a strengthened KE jet and thus an increase in the KE SST one year later. For the ~10 a periodicity during 1980-2009, a negative North Pacific Oscillation-like dipole takes 2-3 a to develop into a significant positive North Pacific Oscillation-like dipole, and this process corresponds to the northward shift of the AL. Negative WSC anomalies associated with this AL activity in the central North Pacific are able to induce the positive SSH anomalies. These oceanic signals then propagate westward into the KE region after 2-3 a, favoring a northward shift of the KE jet, thus leading to the warming of the KE SST. The feedbacks of the KE SST anomaly on the AL forcing are both negative for these two periodicities. These results suggest that the dual-period KE SST variability can be generated by the two-way KE-SST-AL coupling.
- sea surface temperature,
- Kuroshio Extension,
- Aleutian Low activity,
- dual-period variability

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References(33)

References

Bengtsson L, Hodges K I, Roeckner E. 2006. Storm tracks and climate change. J Climate, 19(15):3518-3543

Carton J A, Giese B. 2008. A reanalysis of ocean climate using Simple Ocean Data Assimilation (SODA). Mon Wea Rev, 136(8):2999-3017

Chelton D B, Schlax M G. 1996. Global observations of oceanic Rossby waves. Science, 272(5259):234-238

Compo G P, Whitaker J S, Sardeshmukh P D, et al. 2011. The twentieth century reanalysis project. Quart J Roy Meteor Soc, 137(654):1-28,, doi: 10.1002/qj.776

Ding Ruiqiang, Li Jianping, Tseng Y H. 2015. The impact of South Pacific extratropical forcing on ENSO and comparisons with the North Pacific. Climate Dyn, 44(7-8):2017-2034

Frankignoul C, Sennéchael N. 2007. Observed influence of North Pacific SST anomalies on the atmospheric circulation. J Climate, 20(3):592-606

Ishi Y, Hanawa K. 2005. Large-scale variabilities of wintertime wind stress curl field in the North Pacific and their relation to atmospheric teleconnection patterns. Geophys Res Lett, 32(10):L10607, doi: 10.1029/2004GL022330

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

Kushnir Y W, Robinson W A, Bladé I, et al. 2002. Atmospheric GCM response to extratropical SST anomalies:synthesis and evaluation. J Climate, 15(16):2233-2256

Kwon Y O, Deser C. 2007. North Pacific decadal variability in the Community Climate System Model version 2. J Climate, 20(11):2416-2433

Linkin M E, Nigam S. 2008. The North Pacific Oscillation-west Pacific teleconnection pattern:mature-phase structure and winter impacts. J Climate, 21(9):1979-1997

Liu Zhengyu, Liu Yun, Wu Lixin, et al. 2007. Seasonal and long-term atmospheric responses to reemerging North Pacific Ocean variability:a combined dynamical and statistical assessment. J Climate, 20(6):955-980

Nakamura H, Sampe T, Tanimoto Y, et al. 2004. Observed associations among storm tracks, jet streams and midlatitude oceanic fronts. In:Wang C, Xie S P, Carton J A, eds. Earth's Climate:The Ocean-Atmosphere Interaction. Washington:American Geophysical Union, 329-346

Park Y H, Yoon J H, Youn Y H, et al. 2012. Recent warming in the western North Pacific in relation to rapid changes in the atmospheric circulation of the Siberian High and Aleutian Low systems. J Climate, 25(10):3476-3493

Pyper B J, Peterman R M. 1998. Comparison of methods to account for autocorrelation in correlation analyses of fish data. Can J Fish Aquat Sci, 55(9):2127-2140

Qiu Bo. 2000. Interannual variability of the Kuroshio extension system and its impact on the wintertime SST field. J Phys Oceanogr, 30(6):1486-1502

Qiu Bo. 2003. Kuroshio Extension variability and forcing of the Pacific decadal oscillations:Responses and potential feedback. J Phys Oceanogr, 33(12):2465-2482

Qiu Bo, Chen Shuiming. 2005. Variability of the Kuroshio Extension jet, recirculation gyre, and mesoscale eddies on decadal time scales. J Phys Oceanogr, 35(11):2090-2103

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

Qiu Bo, Chen Shuiming, Schneider N, et al. 2014. A coupled decadal prediction of the dynamic state of the Kuroshio Extension system. J Climate, 27(4):1751-1764

Qiu Bo, Schneider N, Chen Shuiming. 2007. Coupled decadal variability in the North Pacific:an observationally constrained idealized model. J Climate, 20(14):3602-3620

Révelard A, Frankignoul C, Sennéchael N, et al. 2016. Influence of the decadal variability of the Kuroshio Extension on the atmospheric circulation in the cold season. J Climate, 29(6):2123-2144

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 timescales. J Climate, 14(22):4249-4265

Seo Y, Sugimoto S, Hanawa K. 2014. Long-term variations of the Kuroshio Extension path in winter:meridional movement and path state change. J Climate, 愲?匨椱渵椩挺愵?′??????监?????执物?婯桴敯渠杓??案潡湮条睷敡椠??圠愲渰朰?儮椠湄来???楡??桡潮湤朠祩楮湴???づ?????渠?潡癲敩牡癴楩敯睮?漠景?洠整摨楥甠流?瑥潵?汩潡湮朠?瑯敷爠浡?灴物敶摩楴捹琠楡潮湤猠?潨晥?杲氠潲扥慬污?睩慯癮攠?敯渠敵牰杰祥?爠敯獣潥畡牮捩散猠??割敩湡整睩慯扮汳攠?慶湥摲?却畨獥琠慎楯湲慴扨氠敐??湩敦物杣礮?削攠癍楥整睥獯???摯潣椠??ば???ㄠ??樨?爩猺收爰?木????ぢ???ふ?imoto S, Hanawa K. 2011. Roles of SST anomalies on the wintertime turbulent heat fluxes in the Kuroshio-Oyashio confluence region:influences of warm eddies detached from the Kuroshio Extension. J Climate, 24(24):6551-6561

Taguchi B, Xie Shangping, Schneider N, et al. 2007. Decadal variability of the Kuroshio Extension:observations and an eddy-resolving model hindcast. J Climate, 20(11):2357-2377

Tanimoto Y, Nakamura H, Kagimoto T, et al. 2003. An active role of extratropical sea surface temperature anomalies in determining anomalous turbulent heat flux. J Geophys Res, 108(C10):3304, doi: 10.1029/2002JC001750

Vivier F, Kelly E A, Thompson L A. 2002. Heat budget in the Kuroshio Extension region:1993-99. J Phys Oceanogr, 32(12):3436-3454

Wallace J M, Gutzler D S. 1981. Teleconnections in the geopotential height field during the Northern Hemisphere winter. Mon Wea Rev, 109(4):784-812

Wang Xiaodan, Zhong Zhong, Liu Jianwen, et al. 2012. Propagation characteristic of atmospheric responses to abnormal warm SST in the Kuroshio Extension in winter. Theor Appl Climatol, 108(1-2):283-292

Wang Xiaodan, Zhong Zhong, Tan Yanke, et al. 2011. Numerical experiment on the effect of the warmer SST in the Kuroshio Extension in winter on the East Asian summer monsoon. J Trop Meteor (in Chinese), 27(4):569-576

Wu Lixin, Cai Wenju, Zhang Liping, et al. 2012. Enhanced warming over the global subtropical western boundary currents. Nat Climate Change, 2(3):161-166

Wu Lixin, Liu Zhengyu. 2003. Decadal variability in the North Pacific:The eastern North Pacific mode. J Climate, 16(19):3111-3131

Yu Peilong, Zhang Lifeng, Zhang Yongchui, et al. 2016. Interdecadal change of winter SST variability in the Kuroshio Extension region and its linkage with Aleutian atmospheric low pressure system. Acta Oceanologic

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