Abstract
In this study, the interannual variability of sea surface temperature (SST) and its atmospheric teleconnection over the western North Pacific (WNP) toward the North Pacific/North America during boreal winter are investigated. First, we defined the WNP mode as the first empirical orthogonal function (EOF) mode of SST anomalies over the WNP region (100–165°E, 0–35°N), of which the principle component time-series are significantly correlated with several well-known climate modes such as the warm pool mode which is the second EOF mode of the tropical to North Pacific SST anomalies, North Pacific oscillation (NPO), North Pacific gyre oscillation (NPGO), and central Pacific (CP)-El Niño at 95% confidence level, but not correlated with the eastern Pacific (EP)-El Niño. The warm phase of the WNP mode (sea surface warming) is initiated by anomalous southerly winds through reduction of wind speed with the background of northerly mean winds over the WNP during boreal winter, i.e., reduced evaporative cooling. Meanwhile, the atmospheric response to the SST warming pattern and its diabatic heating further enhance the southerly wind anomaly, referred to the wind–evaporation–SST (WES) feedback. Thus, the WNP mode is developed and maintained through winter until spring, when the northerly mean wind disappears. Furthermore, it is also known that anomalous upper-level divergence associated with WNP mode leads to the NPO-like structure over the North Pacific and the east–west pressure contrast pattern over the North America through Rossby wave propagation, impacting the climate over the North Pacific and North America.
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Ashok K, Behera SK, Rao SA et al (2007) El Niño Modoki and its possible teleconnection. J Geophys Res Oceans 112:C11007. doi:10.1029/2006JC003798
Bond N, Overland J, Spillane M et al (2003) Recent shifts in the state of the North Pacific. Geophys Res Lett 30:2183. doi:10.1029/2003GL018597
Ceballos LI, Di Lorenzo E, Hoyos CD et al (2009) North Pacific gyre oscillation synchronizes climate fluctuations in the eastern and western boundary systems. J Clim 22:5163–5174. doi:10.1175/2009JCLI2848.1
Chhak KC, Di Lorenzo E, Schneider N et al (2009) Forcing of low-frequency ocean variability in the Northeast Pacific. J Clim 22:1255–1276. doi:10.1175/2008JCLI2639.1
Chikamoto Y, Timmermann A, Luo J-J et al (2015) Skilful multi-year predictions of tropical trans-basin climate variability. Nat Commun 6:6869. doi:10.1038/ncomms7869
Di Lorenzo E, Schneider N, Cobb K et al (2008) North Pacific Gyre Oscillation links ocean climate and ecosystem change. Geophys Res Lett 35:L08607
Di Lorenzo E, Cobb KM, Furtado JC et al (2010) Central Pacific El Niño and decadal climate change in the North Pacific Ocean. Nature Geosci 3:762–765. doi:10.1038/ngeo984
Fu R, Del Genio AD, Rossow WB (1994) Influence of ocean surface conditions on atmospheric vertical thermodynamic structure and deep convection. J Clim 7:1092–1108
Gill AE (1980) Some simple solutions for heat-induced tropical circulation. Q J R Meteorol Soc 106:447–462
Hartmann DL (2015) Pacific sea surface temperature and the winter of 2014. Geophys Res Lett 42:1894–1902
Horel, JD, Wallace JM (1981) Planetary-scale atmospheric phenomena associated with the Southern Oscillation. Mon Wea Rev 109: 813–829
Hoskins BJ, Ambrizzi T (1993) Rossby wave propagation on a realistic longitudinally varying flow. J Atmos Sci 50:1661–1671
Hoskins BJ, Karoly DJ (1981) The steady linear response of a spherical atmosphere to thermal and orographic forcing. J Atmos Sci 38:1179–1196
Hu D, Cui M (1991) The western boundary current of the Pacific and its role in the climate. Chin J Oceanol Limn 9:1–14
Huffman GJ, Adler RF, Bolvin DT et al (2009) Improving the global precipitation record: GPCP version 2.1. Geophys Res Lett 36:L17808. doi:10.1029/2009GL040000
Jo H-S, Yeh S-W, Kirtman BP (2014) Role of the western tropical Pacific in the North Pacific regime shift in the winter of 1998/1999. J Geophys Res. Oceans 119:6161–6170
Kao H-Y, Yu J-Y (2009) Contrasting eastern-Pacific and central-Pacific types of ENSO. J Clim 22:615–632
Kara AB, Rochford PA, Hurlburt HE (2003) Mixed layer depth variability over the global ocean. J Geophys Res. Oceans 108:3079. doi:10.1029/2000JC000736 C3
Kistler R, Collins W, Saha S et al (2001) The NCEP–NCAR 50–year reanalysis: monthly means CD–ROM and documentation. Bull Amer Meteor Soc 82:247–267
Kug J-S, Jin F-F, An S-I (2009) Two types of El Niño events: cold tongue El Niño and warm pool El Niño. J Clim 22:1499–1515
Larkin NK, Harrison D (2005) On the definition of El Niño and associated seasonal average US weather anomalies. Geophys Res Lett 32: L13705. 1–L13705. 4
Lee S-K, Park W, Baringer MO et al (2015) Pacific origin of the abrupt increase in Indian Ocean heat content during the warming hiatus. Nature Geosci 8:445–449
Linkin ME, Nigam S (2008) The North Pacific oscillation–West Pacific teleconnection pattern: mature-phase structure and winter impacts. J Clim 21:1979–1997
Mantua NJ, Hare SR, Zhang Y et al (1997) A Pacific interdecadal climate oscillation with impacts on salmon production. Bull Amer Meteor Soc 78:1069–1079
Matsuno T (1966) Quasi-geostrophic motions in the equatorial area. J Meteor Soc Japan 44:25–43
Park J-H, An S-I (2014) The impact of tropical western Pacific convection on the North Pacific atmospheric circulation during the boreal winter. Clim Dyn 43:2227–2238
Park J-Y, Yeh S-W, Kug J-S (2012) Revisited relationship between tropical and North Pacific sea surface temperature variations. Geophys Res Lett 39:L02703. doi:10.1029/2011GL050005
Reynolds RW, Smith TM, Liu C et al (2007) Daily high-resolution-blended analyses for sea surface temperature. J Clim 20:5473–5496
Rogers JC (1981) The North Pacific Oscillation. J Clim 1:39–57
Sardeshmukh PD, Hoskins BJ (1988) The generation of global rotational flow by steady idealized tropical divergence. J Atmos Sci 45:1228–1251
Takaya K, Nakamura H (2001) A formulation of a phase-independent wave-activity flux for stationary and migratory quasigeostrophic eddies on a zonally varying basic flow. J Atmos Sci 58:608–627
Toole JM, Millard RC, Wang Z et al (1990) Observations of the Pacific North equatorial current bifurcation at the Philippine coast. J Phys Oceano 20:307–318
Ueki I (2011) Evidence of wind-evaporation-sea surface temperature (WES) feedback in the western Pacific warm pool during the mature phase of the 1997-98 El Niño. Geophys Res Lett 38:L11603. doi:10.1029/2011GL047179
Wallace JM, Gutzler DS (1981) Teleconnections in the geopotential height field during the Northern Hemisphere winter. Mont Weather Rev 109:784–812
Wang B, Wu R, Fu X (2000) Pacific-East Asian teleconnection: how does ENSO affect East Asian climate? J Clim 13:1517–1536
Watanabe M, Kimoto M (2000) Atmosphere-ocean thermal coupling in the North Atlantic: a positive feedback. Q J R Meteorol Soc 126:3343–3369
Xie SP, Philander SGH (1994) A coupled ocean-atmosphere model of relevance to the ITCZ in the eastern Pacific. Tellus A 46:340–350
Yu JY, Kao HY (2007) Decadal changes of ENSO persistence barrier in SST and ocean heat content indices: 1958–2001. J Geophys Res Atmos 112:13106
Zhang C (1993) Large-scale variability of atmospheric deep convection in relation to seasurface temperature in the tropics. J Clim 6:1898–1913
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This work was supported by the Korea Meteorological Administration Research and Development Program under Grant KMIPA 2015-1043.
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Park, JH., An, SI. & Kug, JS. Interannual variability of western North Pacific SST anomalies and its impact on North Pacific and North America. Clim Dyn 49, 3787–3798 (2017). https://doi.org/10.1007/s00382-017-3538-8
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DOI: https://doi.org/10.1007/s00382-017-3538-8