Abstract
Atmospheric mid-latitude circulation is dominated by a zonal, westerly flow. Such a flow is generally symmetric, but it can be occasionally broken up by blocking anticyclones. The subsequent asymmetric flow can persist for several days. In this paper, we apply new mathematical tools based on the computation of an extremal index in order to reexamine the dynamical mechanisms responsible for the transitions between zonal and blocked flows. We discard the claim that mid-latitude circulation features two distinct stable equilibria or chaotic regimes, in favor of a simpler mechanism that is well understood in dynamical systems theory: we identify the blocked flow as an unstable fixed point (or saddle point) of a single basin chaotic attractor, dominated by the westerlies regime. We also analyze the North Atlantic Oscillation and the Arctic Oscillation atmospheric indices, whose behavior is often associated with the transition between the two circulation regimes, and investigate analogies and differences with the bidimensional blocking indices. We find that the Arctic Oscillation index, which can be thought as a proxy for a hemispheric average of the Tibaldi–Molteni blocking index, tracks unstable fixed points. On the other hand, the North Atlantic Oscillation, representative only for local properties of the North Atlantic blocking dynamics, does not show any trace of the presence of unstable fixed points of the dynamics.
Similar content being viewed by others
References
Ambaum MH, Hoskins BJ, Stephenson DB (2001) Arctic oscillation or north atlantic oscillation? J Clim 14(16):3495–3507
Barnston AG, Livezey RE (1987) Classification, seasonality and persistence of low-frequency atmospheric circulation patterns. Mon Weather Rev 115(6):1083–1126
Barriopedro D, García-Herrera R, Lupo AR, Hernández E (2006) A climatology of northern hemisphere blocking. J Clim 19(6):1042–1063
Barriopedro D, García-Herrera R, Trigo R (2010) Application of blocking diagnosis methods to general circulation models. Part I: a novel detection scheme. Clim Dyn 35(7–8):1373–1391
Barriopedro D, Fischer EM, Luterbacher J, Trigo RM, García-Herrera R (2011) The hot summer of 2010: redrawing the temperature record map of europe. Science 332(6026):220–224
Beniston M (2004) The 2003 heat wave in Europe: a shape of things to come? An analysis based on swiss climatological data and model simulations. Geophys Res Lett 31(2):L02202. doi:10.1029/2003GL018857
Benzi R, Paladin G, Parisi G, Vulpiani A (1985) Characterisation of intermittency in chaotic systems. J Phys A Math Gen 18(12):2157
Blender R, Raible C, Lunkeit F (2015) Non-exponential return time distributions for vorticity extremes explained by fractional poisson processes. Q J R Meteor Soc 141(686):249–257
Brayshaw DJ, Hoskins B, Blackburn M (2008) The storm-track response to idealized sst perturbations in an aquaplanet gcm. J Atmos Sci 65(9):2842–2860
Brockwell PJ, Davis RA (2002) Introduction to time series and forecasting, vol 1. Taylor & Francis, London
Buehler T, Raible CC, Stocker TF (2011) The relationship of winter season north atlantic blocking frequencies to extreme cold or dry spells in the era-40. Tellus A 63(2):212–222
Bunde A, Eichner JF, Kantelhardt JW, Havlin S (2005) Long-term memory: a natural mechanism for the clustering of extreme events and anomalous residual times in climate records. Phys Rev Lett 94(4):048701
Charney JG (1947) The dynamics of long waves in a baroclinic westerly current. J Meteorol 4(5):136–162
Charney JG, DeVore JG (1979) Multiple flow equilibria in the atmosphere and blocking. J Atmos Sci 36(7):1205–1216
Christensen C, Wiin-Nielsen A (1996) Blocking as a wave–wave interaction. Tellus A 48(2):254–271
Colucci SJ, Alberta TL (1996) Planetary-scale climatology of explosive cyclogenesis and blocking. Mon Weather Rev 124(11):2509–2520
d’Andrea F, Tibaldi S, Blackburn M, Boer G, Déqué M, Dix M, Dugas B, Ferranti L, Iwasaki T, Kitoh A et al (1998) Northern hemisphere atmospheric blocking as simulated by 15 atmospheric general circulation models in the period 1979–1988. Clim Dyn 14(6):385–407
Dole RM (1986) Persistent anomalies of the extratropical northern hemisphere wintertime circulation: structure. Mon Weather Rev 114(1):178–207
Dole R, Hoerling M, Perlwitz J, Eischeid J, Pegion P, Zhang T, Quan XW, Xu T, Murray D (2011) Was there a basis for anticipating the 2010 russian heat wave? Geophys Res Lett 38(6):L06702. doi:10.1029/2010GL046582
Egger J (1978) Dynamics of blocking highs. J Atmos Sci 35(10):1788–1801
Emanuel K (2005) Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436(7051):686–688
Embrechts P, Klüppelberg C, Mikosch T (1997) Modelling extremal events for insurance and finance. Springer, Berlin
Faranda D, Vaienti S (2013) A recurrence-based technique for detecting genuine extremes in instrumental temperature records. Geophys Res Lett 40(21):5782–5786
Faranda D, Lucarini V, Turchetti G, Vaienti S (2011) Numerical convergence of the block-maxima approach to the generalized extreme value distribution. J Stat Phys 145(5):1156–1180
Faranda D, Freitas JM, Lucarini V, Turchetti G, Vaienti S (2013) Extreme value statistics for dynamical systems with noise. Nonlinearity 26(9):2597
Ferro CAT, Segers J (2003) Inference for clusters of extreme values. J R Stat Soc B 65(2):545–556
Frederiksen J (1982) A unified three-dimensional instability theory of the onset of blocking and cyclogenesis. J Atmos Sci 39(5):969–982
Freitas ACM, Freitas JM, Todd M (2010) Hitting time statistics and extreme value theory. Probab Theory Rel 147(3–4):675–710
Freitas ACM, Freitas JM, Todd M (2012) The extremal index, hitting time statistics and periodicity. Adv Math 231(5):2626–2665
Ghil M (1987) Dynamics, statistics and predictability of planetary flow regimes. In: Nicolis G (ed) Irreversible phenomena and dynamical systems analysis in geosciences. Springer, Berlin, pp 241–283
Hansen AR (1986) Observational characteristics of atmospheric planetary waves with bimodal amplitude distributions. Adv Geophys 29:101–133
Hénon M (1976) A two-dimensional mapping with a strange attractor. Commun Math Phys 50(1):69–77
Holton JR, Hakim GJ (2013) An introduction to dynamic meteorology. Academic Press, Waltham
Hoskins BJ, James IN, White GH (1983) The shape, propagation and mean-flow interaction of large-scale weather systems. J Atmos Sci 40(7):1595–1612
Hurrell JW (1995) Decadal trends in the north atlantic oscillation: regional temperatures and precipitation. Science 269(5224):676–679
Hurrell JW, Deser C (2010) North atlantic climate variability: the role of the north atlantic oscillation. J Mar Syst 79(3):231–244
Hurrell JW, Kushnir Y, Ottersen G, Visbeck M (2003) An overview of the North Atlantic oscillation. Wiley, Hoboken
Kalnay E, Kanamitsu M, Kistler R, Collins W, Deaven D, Gandin L, Iredell M, Saha S, White G, Woollen J et al (1996) The ncep/ncar 40-year reanalysis project. B Am Meteorol Soc 77(3):437–471
Kaplan JL, Yorke JA (1979) Chaotic behavior of multidimensional difference equations. In: Peitgen H.-O, Walther H.-O (eds) Functional differential equations and approximation of fixed points. Springer, Berlin, pp 204–227
Katok A, Hasselblatt B (1997) Introduction to the modern theory of dynamical systems, vol 54. Cambridge University Press, Cambridge
Kung EC, Dacamara CC, Baker WE, Susskind J, Park CK (1990) Simulations of winter blocking episodes using observed sea surface temperatures. Q J R Meteorol Soc 116(495):1053–1070
Leadbetter MR, Lindgren G, Rootzén H (1983) Extremes and related properties of random sequences and processes. Springer, New York
Legras B, Ghil M (1985) Persistent anomalies, blocking and variations in atmospheric predictability. J Atmos Sci 42(5):433–471
Lucarini V, Faranda D, Turchetti G, Vaienti S (2012) Extreme value theory for singular measures. Chaos 22(2):023135
Lucarini V, Blender R, Herbert C, Ragone F, Pascale S, Wouters J (2014) Mathematical and physical ideas for climate science. Rev Geophys 52(4):809–859
Lupo AR, Smith PJ (1995) Climatological features of blocking anticyclones in the northern hemisphere. Tellus A 47(4):439–456
Mailier PJ, Stephenson DB, Ferro CA, Hodges KI (2006) Serial clustering of extratropical cyclones. Mon Weather Rev 134(8):2224–2240
Masato G, Hoskins BJ, Woollings TJ (2009) Can the frequency of blocking be described by a red noise process? J Atmos Sci 66(7):2143–2149
Masato G, Hoskins B, Woollings TJ (2012) Wave-breaking characteristics of midlatitude blocking. Q J R Meteorol Soc 138(666):1285–1296
McWilliams JC, Flierl GR, Larichev VD, Reznik GM (1981) Numerical studies of barotropic modons. Dyn Atmos Oceans 5(4):219–238
Memory MC (1991) Stable and unstable manifolds for partial functional differential equations. Nonlinear Anal Theor 16(2):131–142
Mo K, Ghil M (1988) Cluster analysis of multiple planetary flow regimes. J Geophys Res Atmos 93(D9):10927–10952
Nakamura H, Nakamura M, Anderson JL (1997) The role of high-and low-frequency dynamics in blocking formation. Mon Weather Rev 125(9):2074–2093
NOAA (2015) North atlantic oscillation. http://www.cpc.ncep.noaa.gov/data/teledoc/nao.shtml
Payne LE, Sattinger D (1975) Saddle points and instability of nonlinear hyperbolic equations. Isr J Math 22(3–4):273–303
Pelly JL, Hoskins BJ (2003) A new perspective on blocking. J Atmos Sci 60(5):743–755
Rudeva I (2008) On the relation of the number of extratropical cyclones to their sizes. Izv Atmos Ocean Phys 44(3):273–278
Schär C, Jendritzky G (2004) Climate change: hot news from summer 2003. Nature 432(7017):559–560
Scherrer SC, Croci-Maspoli M, Schwierz C, Appenzeller C (2006) Two-dimensional indices of atmospheric blocking and their statistical relationship with winter climate patterns in the Euro-Atlantic region. Int J Climatol 26(2):233–249
Schreiber T, Schmitz A (1996) Improved surrogate data for nonlinearity tests. Phys Rev Lett 77(4):635
Shutts G (1983) The propagation of eddies in diffluent jetstreams: eddy vorticity forcing of blockingflow fields. Q J R Meteorol Soc 109(462):737–761
Shutts G (1986) A case study of eddy forcing during an atlantic blocking episode. Adv Geophys 29:135–162
Simmons A, Wallace J, Branstator G (1983) Barotropic wave propagation and instability, and atmospheric teleconnection patterns. J Atmos Sci 40(6):1363–1392
Süveges M (2007) Likelihood estimation of the extremal index. Extremes 10(1–2):41–55
Thompson DW, Wallace JM (1998) The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophys Res Lett 25(9):1297–1300
Tibaldi S, Molteni F (1990) On the operational predictability of blocking. Tellus A 42(3):343–365
Tibaldi S, Tosi E, Navarra A, Pedulli L (1994) Northern and southern hemisphere seasonal variability of blocking frequency and predictability. Mon Weather Rev 122(9):1971–2003
Tung KK, Lindzen RS (1979) A theory of stationary long waves. i-a simple theory of blocking. Mon Weather Rev 107(6):714–734
Tyrlis E, Hoskins B (2008) Aspects of a northern hemisphere atmospheric blocking climatology. J Atmos Sci 65(5):1638–1652
Vautard R (1990) Multiple weather regimes over the North Atlantic: analysis of precursors and successors. Mon Weather Rev 118(10):2056–2081
Wallace J, Blackmon M (1983) Observations of low-frequency atmospheric variability. Large-scale dynamical processes in the atmosphere(A 84-15488 04-47). Academic Press, London, pp 55–94
Weeks ER, Crocker JC, Levitt AC, Schofield A, Weitz DA (2000) Three-dimensional direct imaging of structural relaxation near the colloidal glass transition. Science 287(5453):627–631
Acknowledgments
D.F. and P.Y. were supported by the ERC Grant A2C2 (No. 338965). We thank two anonymous referees whose suggestions greatly improved the quality of this paper. D.F. thanks M. Carmen Alvarez-Castro for useful discussions.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Faranda, D., Masato, G., Moloney, N. et al. The switching between zonal and blocked mid-latitude atmospheric circulation: a dynamical system perspective. Clim Dyn 47, 1587–1599 (2016). https://doi.org/10.1007/s00382-015-2921-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00382-015-2921-6