The Link between the North Pacific Climate Variability and the North Atlantic Oscillation via Downstream Propagation of Synoptic Waves

AbstractThe North Atlantic Oscillation (NAO) response to the northeast Pacific climate variability is examined using the ERA-40 dataset. The main objective is to validate a mechanism involving downstream wave propagation processes proposed in a recent idealized companion study: a low-frequency planetary-scale ridge (trough) anomaly located in the eastern Pacific–North American sector induces more equatorward (poleward) propagation of synoptic-scale wave packets on its downstream side, which favors the occurrence of anticyclonic (cyclonic) wave breakings in the Atlantic sector and the positive (negative) NAO phase.The mechanism first provides an interpretation of the canonical impact of the El Nino–Southern Oscillation on the NAO in late winter. The wintertime relationship between the Pacific–North American oscillation (PNA) and the NAO is also investigated. For out-of-phase fluctuations between the PNA and NAO indices (i.e., the most recurrent situation in late winter), the eastern Pacific PNA ridge (trou...

[1]  J. Wallace,et al.  A Simplified Linear Framework for Interpreting Patterns of Northern Hemisphere Wintertime Climate Variability , 2004 .

[2]  C. Cassou,et al.  Oceanic Forcing of the Wintertime Low-Frequency Atmospheric Variability in the North Atlantic European Sector: A Study with the ARPEGE Model , 2001 .

[3]  Gwendal Rivière,et al.  The Link between Rossby Wave Breakings and Weather Regime Transitions , 2011 .

[4]  G. Moore,et al.  Temporal Variability in the Expression of the Arctic Oscillation in the North Pacific , 2009 .

[5]  John M. Wallace,et al.  Annular Modes in the Extratropical Circulation. Part II: Trends , 2000 .

[6]  E. Chang,et al.  Interdecadal Variations in Northern Hemisphere Winter Storm Track Intensity , 2002 .

[7]  B. Hoskins,et al.  Stationary rossby‐wave propagation in a baroclinic atmosphere , 1997 .

[8]  Adam A. Scaife,et al.  The role of the stratosphere in the European climate response to El Niño , 2009 .

[9]  I. Orlanski,et al.  Stages in the energetics of baroclinic systems , 1995 .

[10]  Paul Berrisford,et al.  A New Rossby Wave–Breaking Interpretation of the North Atlantic Oscillation , 2008 .

[11]  John M. Wallace,et al.  North atlantic oscillatiodannular mode: Two paradigms—one phenomenon , 2000 .

[12]  H. Nakamura,et al.  Interannual Seesaw between the Aleutian and Icelandic Lows. Part II: Its Significance in the Interannual Variability over the Wintertime Northern Hemisphere , 2001 .

[13]  Louis J. Bajuk,et al.  Interpretation of Interdecadal Trends in Northern Hemisphere Surface Air Temperature , 1996 .

[14]  J. Wallace,et al.  The Arctic oscillation signature in the wintertime geopotential height and temperature fields , 1998 .

[15]  Gwendal Rivière,et al.  Characteristics of the Atlantic Storm-Track Eddy Activity and Its Relation with the North Atlantic Oscillation , 2005 .

[16]  H. Nakamura,et al.  Interannual Seesaw between the Aleutian and Icelandic Lows. Part I: Seasonal Dependence and Life Cycle , 2001 .

[17]  C. Strong,et al.  How Rossby wave breaking over the Pacific forces the North Atlantic Oscillation , 2008 .

[18]  I. Gouirand,et al.  Seasonal modulation of the El Niño–southern oscillation relationship with sea level pressure anomalies over the North Atlantic in October–March 1873–1996 , 2003 .

[19]  U. Ulbrich,et al.  The variable link between PNA and NAO in observations and in multi-century CGCM simulations , 2010 .

[20]  B. Dong,et al.  Predictable winter climate in the North Atlantic sector during the 1997–1999 ENSO cycle , 2000 .

[21]  S. Brönnimann,et al.  Impact of El Niño–Southern Oscillation on European climate , 2007 .

[22]  Ngar-Cheung Lau,et al.  Variability of the observed midlatitude storm tracks in relation to low-frequency changes in the circulation pattern , 1988 .

[23]  David B. Stephenson,et al.  Arctic Oscillation or North Atlantic Oscillation , 2001 .

[24]  P. Klein,et al.  Perturbation growth in terms of barotropic alignment properties , 2003 .

[25]  K. Trenberth.  An assessment of the impact of transient eddies on the zonal flow during a blocking episode using localized Eliassen-Palm flux diagnostics , 1986 .

[26]  D. Pozo-Vázquez,et al.  The Association between ENSO and Winter Atmospheric Circulation and Temperature in the North Atlantic Region , 2001 .

[27]  G. Rivière,et al.  The North Atlantic Oscillation Response to Large-Scale Atmospheric Anomalies in the Northeastern Pacific , 2013 .

[28]  K. Fraedrich.  European grosswetter during the warm and cold extremes of the El Niñco/Southern Oscillation , 1990 .

[29]  J. Wallace,et al.  Annular Modes in the Extratropical Circulation. Part I: Month-to-Month Variability* , 2000 .

[30]  I. Orlanski,et al.  On Energy Flux and Group Velocity of Waves in Baroclinic Flows. , 1994 .

[31]  S. Feldstein.  The dynamics of NAO teleconnection pattern growth and decay , 2003 .

[32]  A. Joly,et al.  Eddy kinetic energy redistribution within idealized extratropical cyclones using a two‐layer quasi‐geostrophic model , 2015 .

[33]  Brian J. Hoskins,et al.  The Shape, Propagation and Mean-Flow Interaction of Large-Scale Weather Systems , 1983 .

[34]  N. Lau,et al.  Contributions of Downstream Eddy Development to the Teleconnection between ENSO and the Atmospheric Circulation over the North Atlantic , 2012 .

[35]  Jie Song,et al.  The linkage between the Pacific-North American teleconnection pattern and the North Atlantic Oscillation , 2009 .

[36]  R. Seager,et al.  Adjustment of the atmospheric circulation to tropical Pacific SST anomalies: Variability of transient eddy propagation in the Pacific–North America sector , 2010 .

[37]  E. Chang.  Downstream Development of Baroclinic Waves As Inferred from Regression Analysis , 1993 .

[38]  H. Graf,et al.  North Pacific - North Atlantic relationships under stratospheric control? , 2003 .

[39]  Ying Li,et al.  Impact of ENSO on the Atmospheric Variability over the North Atlantic in Late Winter—Role of Transient Eddies , 2012 .

[40]  C. Deser.  On the teleconnectivity of the “Arctic Oscillation” , 2000 .

[41]  G. Brunet,et al.  Tropical Pacific link to the two dominant patterns of atmospheric variability , 2005 .

[42]  Inter-Basin Link between the North Pacific and North Atlantic in the Upper Tropospheric Circulation: Its Dominance and Seasonal Dependence , 2007 .

[43]  John M. Wallace,et al.  The Pacific Center of Action of the Northern Hemisphere Annular Mode: Real or Artifact? , 2001 .

[44]  J. Katzfey,et al.  The Life Cycle of a Cyclone Wave in the Southern Hemisphere. Part I: Eddy Energy Budget. , 1991 .

[45]  C. Strong,et al.  Tropospheric Rossby Wave Breaking and the NAO/NAM , 2008 .

[46]  D. Pozo-Vázquez,et al.  El Niño–southern oscillation events and associated European winter precipitation anomalies , 2005 .

[47]  Huw C. Davies,et al.  Breaking Waves at the Tropopause in the Wintertime Northern Hemisphere: Climatological Analyses of the Orientation and the Theoretical LC1/2 Classification , 2007 .

[48]  G. Branstator.  Organization of Storm Track Anomalies by Recurring Low-Frequency Circulation Anomalies , 1995 .

[49]  A. Sterl,et al.  The ERA‐40 re‐analysis , 2005 .

[50]  R. A. Madden,et al.  The Southern Oscillation. Part I: Global Associations with Pressure and Temperature in Northern Winter , 1981 .

[51]  E. Chang.  The Structure of Baroclinic Wave Packets , 2001 .

[52]  K. Fraedrich,et al.  Climate anomalies in Europe associated with ENSO extremes , 1992 .

[53]  G. Rivière.  Effect of Latitudinal Variations in Low-Level Baroclinicity on Eddy Life Cycles and Upper-Tropospheric Wave-Breaking Processes , 2009 .

[54]  Sukyoung Lee,et al.  Synoptic View of the North Atlantic Oscillation , 2004 .

[55]  AO, COWL, and Observed Climate Trends , 2004 .

[56]  I. Orlanski,et al.  On the Dynamics of a Storm Track , 1993 .