Surveys in Geophysics

, Volume 27, Issue 5, pp 491–544 | Cite as

Quantifying anthropogenic influence on recent near-surface temperature change

  • M. R. Allen
  • N. P. Gillett
  • J. A. Kettleborough
  • G. Hegerl
  • R. Schnur
  • P. A. Stott
  • G. Boer
  • C. Covey
  • T. L. Delworth
  • G. S. Jones
  • J. F. B. Mitchell
  • T. P. Barnett
Original Paper

Abstract

We assess the extent to which observed large-scale changes in near-surface temperatures over the latter half of the twentieth century can be attributed to anthropogenic climate change as simulated by a range of climate models. The hypothesis that observed changes are entirely due to internal climate variability is rejected at a high confidence level independent of the climate model used to simulate either the anthropogenic signal or the internal variability. Where the relevant simulations are available, we also consider the alternative hypothesis that observed changes are due entirely to natural external influences, including solar variability and explosive volcanic activity. We allow for the possibility that feedback processes, other than those simulated by the models considered, may be amplifying the observed response to these natural influences by an unknown amount. Even allowing for this possibility, the hypothesis of no anthropogenic influence can be rejected at the 5% level in almost all cases. The influence of anthropogenic greenhouse gases emerges as a substantial contributor to recent observed climate change, with the estimated trend attributable to greenhouse forcing similar in magnitude to the total observed warming over the 20th century. Much greater uncertainty remains in the response to other external influences on climate, particularly the response to anthropogenic sulphate aerosols and to solar and volcanic forcing. Our results remain dependent on model-simulated signal patterns and internal variability, and would benefit considerably from a wider range of simulations, particularly of the responses to natural external forcing.

Keywords

Climate change Detection Attribution 

References

  1. AchutaRao K, Sperber KR (2006) ENSO simulation in coupled ocean-atmosphere models: are the current models better? Clim Dynam 27, doi:10.1007/s00382-006-0119-7Google Scholar
  2. Adcock RJ (1878) A problem in Least Squares. Analyst (Des Moines, Iowa) 5:53CrossRefGoogle Scholar
  3. Allen MR, Smith LA (1996) Monte Carlo SSA: detecting irregular oscillations in the presence of coloured noise. J Clim 9:3373–3404CrossRefGoogle Scholar
  4. Allen MR, Stott PA (2003) Estimating signal amplitudes in optimal fingerprinting I: theory. Clim Dynam 21:477–491CrossRefGoogle Scholar
  5. Allen MR, Tett SFB (1999) Checking internal consistency in optimal fingerprinting. Clim Dynam 15:419–434CrossRefGoogle Scholar
  6. Allen MR, Stott PA, Mitchell JFB, Schnur R, Delworth T (2000) Quantifying the uncertainty in forecasts of anthropogenic climate change. Nature 407:617–620CrossRefGoogle Scholar
  7. Barnett TP, Hasselmann K, Chelliah M, Delworth T, Hegerl G, Jones P, Rasmusson E, Roeckner E, Ropelewski C, Santer B, Tett S (1999) Detection and attribution of recent climate change—a status report. Bull Am Meteorolog Soc 80:2631–2659CrossRefGoogle Scholar
  8. Bell TL (1986) Theory of optimal weighting to detect climate change. J Atmos Sci 43:1694–1710CrossRefGoogle Scholar
  9. Berliner LM, Levine RA, Shea DJ (2000) Bayesian climate change assessment. J Clim 13:3805–3820CrossRefGoogle Scholar
  10. Blackmon M, Boville B, Bryan F, Dickinson R, Gent P, Kiehl J, Moritz R, Randall D, Shukla J, Solomon S, Bonan G, Doney S, Fung I, Hack J, Hunke E, Hurrell J, Kutzbach J, Meehl J, Otto-Bliesner B, Saravanan R, Schneider EK, Sloan L, Spall M, Taylor K, Tribbia J, Washington W (2001) The community climate system model. Bull Am Meteorolog Soc 82:2357–2376CrossRefGoogle Scholar
  11. Boer GJ, Flato G, Reader MC, Ramsden DA (2000) transient climate change simulation with greenhouse gas and aerosol forcing: experimental design and comparison with the instrumental record for the 20th century. Clim Dynam 16:405–425CrossRefGoogle Scholar
  12. Braganza K, Karoly DJ, Hirst AC, Stott P, Stouffer RJ, Tett SFB (2004) Simple indices of global climate variability and change: Part II—Attribution of climate change during the 20th century. Clim Dynam 22:823–838Google Scholar
  13. Christy JR, McNider RT (1994) Detecting global warming using a precise but short (15-year) satellite record. Nature 367:325CrossRefGoogle Scholar
  14. Cubasch U, Santer BD, Hellbach A, Hegerl G, Höck H, Maier-Reimer E, Mikolajewicz U, Stössel A, Voss R (1994) Monte Carlo climate change forecasts with a global coupled ocean-atmosphere model. Clim Dynam 10:1–19CrossRefGoogle Scholar
  15. Cubasch U, Meehl GA, Boer GJ, Stouffer RJ, Dix M, Noda A, Senior CA, Raper S, Yap KS (2001) Projections of future climate change. In: Houghton JT et al (eds) Climate change 2001, The Science of Climate Change. Cambridge University Press, Chap. 9, pp 527–582Google Scholar
  16. Delworth TL, Knutson TR (2000) Simulation of early 20th century global warming. Science 287:2246–2250CrossRefGoogle Scholar
  17. Duffy PB, Doutriaux C, Fodor IK, Santer BD (2000) Effects of missing data on estimates of near-surface temperature change since 1900. J Clim 14:2809–2814CrossRefGoogle Scholar
  18. Friis-Christensen E, Lassen K (1991) Length of the solar cycle: an indicator of solar activity closely associated with climate. Science 254:698–700CrossRefGoogle Scholar
  19. Gillett NP, Allen MR, Tett SFB (2000) Modelled and observed variability in atmospheric vertical temperature structure. Clim Dynam 16:49–61CrossRefGoogle Scholar
  20. Gillett NP, Zwiers FW, Weaver AJ, Hegerl GC, Allen MR, Stott PA (2002a) Detecting anthropogenic influence with a multi-model ensemble. Geophys Res Lett 29, doi:10.1029/2002GL015836Google Scholar
  21. Gillett NP, Hegerl GC, Allen MR, Stott PA, Schnur R (2002b) Reconciling two approaches to the detection of anthropogenic influence on climate. J Clim 15:326–329CrossRefGoogle Scholar
  22. Gillett NP, Weaver AJ, Zwiers FW, Flannigan MD (2004a) Detecting the effect of climate change on Canadian forest fires. Geophys Res Lett 29, doi:10.1029/2002GL015836Google Scholar
  23. Gillett NP, Wehner MF, Tett SFB, Weaver AJ (2004b) Testing the linearity of the response to combined greenhouse gas and sulfate aerosol forcing. Geophys Res Lett 31, doi:10.1029/2004GL020111Google Scholar
  24. Haigh JD (1996) The impact of solar variability on climate. Science 272:981–984CrossRefGoogle Scholar
  25. Hansen J, Russell G, Lacis A, Fung I, Rind D, Stone PH (1985) Climate response times: dependence on climate sensitivity and ocean mixing. Science 229:857–859CrossRefGoogle Scholar
  26. Hasselmann K (1979) On the signal-to-noise problem in atmospheric response studies. In: Shawn T (ed) Meteorology of tropical oceans. Royal Meteorological Society, pp 251–259Google Scholar
  27. Hasselmann K (1993) Optimal fingerprints for the detection of time dependent climate change. J Clim 6:1957–1971CrossRefGoogle Scholar
  28. Hasselmann K (1997) On multifingerprint detection and attribution of anthropogenic climate change. Clim Dynam 13:601–611CrossRefGoogle Scholar
  29. Haywood JM, Stouffer R, Wetherald R, Manabe S, Ramaswamy V (1997) Transient response of a coupled model to estimated changes in greenhouse gas and sulphate concentrations. Geophys Res Lett 24:1335–1338CrossRefGoogle Scholar
  30. Hegerl G, Hasselmann K, Cubasch U, Mitchell JFB, Roeckner E, Voss R, Waszkewitz J (1997) On multi-fingerprint detection and attribution of greenhouse gas and aerosol forced climate change. Clim Dynam 13:613–634CrossRefGoogle Scholar
  31. Hegerl GC, Allen MR (2002) Origins of model-data discrepancies in optimal fingerprinting. J Clim 15:1348–1356CrossRefGoogle Scholar
  32. Hegerl GC, North GR (1997) Comparison of statistically optimal approaches to detecting anthropogenic climate change. J Clim 10:1125–1133CrossRefGoogle Scholar
  33. Hegerl GC, von Storch H, Hasselmann K, Santer BD, Cubasch U, Jones PD (1996) Detecting greenhouse gas-induced climate change with an optimal fingerprint method. J Clim 9:2281–2306CrossRefGoogle Scholar
  34. Hegerl GC, Stott PA, Allen MR, Mitchell JFB, Tett SFB, Cubasch U (2000) Optimal detection and attribution of climate change: sensitivity of results to climate model differences. Clim Dynam 16:737–754CrossRefGoogle Scholar
  35. Hegerl GC, Crowley TJ, Baum SK, Kim KY, Hyde WT (2003) Detection of volcanic, solar and greenhouse gas signals in paleo-reconstructions of Northern Hemispheric temperature. Geophys Res Lett 30:1242–1245CrossRefGoogle Scholar
  36. Hegerl GC, Crowley TJ, Allen MR, Hyde WT, Pollack HN, Smerdon J, Zorita E (2006) Detection of human influence on a new, validated 1,500 year temperature reconstruction. J Clim to appearGoogle Scholar
  37. Houghton JT, Filho LG Meiro, Griggs DJ (eds) (1996) K Maskell. Climate Change 1995: The Science of Climate Change. Cambridge University PressGoogle Scholar
  38. Houghton JT, Ding Y, Griggs DJ, Noguer M, van der Linden PJ, Dai X, Maskell K, (eds) (2001) CA Johnson. Climate Change 2001: The Science of Climate Change. Cambridge University PressGoogle Scholar
  39. Hoyt DV, Schatten KHA (1993) discussion of plausible solar irradiance variations. J Geophys Res 98:18895–18906Google Scholar
  40. Huntingford C, Stott PA, Allen MR, Lambert FH (2006) Incoporating model uncertainty into attribution of observed temperature change. Geophys Res Lett 33, doi:10.1029/2005GL024831Google Scholar
  41. Johns TC, Carnell RE, Crossley JF, Gregory JM, Mitchell JFB, Senior CA, Tett SFB, Wood RA (1997) The Second Hadley Centre coupled ocean-atmosphere GCM: model description, spin-up and validation. Clim Dynam 13:103–134CrossRefGoogle Scholar
  42. Jones PD (1994) Hemispheric surface air temperature variations: a reanalysis and update to 1993. J Clim 7:1794–1802. updated on http://www.cru.uea.ac.uk/cru/data/temperat.htm.Google Scholar
  43. Jones PD, Hegerl GC (1998) Comparisons of two methods of removing anthropogenically related variability from the near-surface observational temperature field. J Geophys Res 103:13777–13786CrossRefGoogle Scholar
  44. Karoly DJ, Braganza K (2005) Attribution of recent temperature changes in the Australian region. J Clim 18:457–464CrossRefGoogle Scholar
  45. Karoly DJ, Braganza K, Stott PA, Arblaster JM, Meehl GA, Broccoli AJ, Dixon KW (2003) Detection of a human influence on North American climate. Science 302:1200–1203CrossRefGoogle Scholar
  46. Knutson TR, Delworth TL, Dixon KW, Stouffer RJ (1999) Model assessment of regional surface temperature trends (1949–1997). J Geophys Res 104:30981–30996CrossRefGoogle Scholar
  47. Lean J, Beer J, Bradley R (1995) Reconstruction of solar irradiance since 1600: implications for climate change. Geophys Res Lett 22:2319–2322Google Scholar
  48. Leroy S (1998) Detecting climate signals, some Bayesian aspects. J Clim 11:640–651CrossRefGoogle Scholar
  49. Meehl GA, Gent PR, Arblaster JM, Otto-Bliesner BL, Brady EC, Craig A (2001) Factors that affect the amplitude of El Ninoin global coupled climate models. Clim Dynam 17:515–526CrossRefGoogle Scholar
  50. Meehl GA, Washington WM, Wigley TML, Arblaster JM, Dai A (2003) Solar and greenhouse gas forcing and climate response in the 20th century. J Climate 16:426–444CrossRefGoogle Scholar
  51. Meehl GA, Washington WM, Ammann CM, Arblaster JM, Wigley TML, Tebaldi C (2004) Combinations of natural and anthropogenic forcings in 20th century climate. J Climate 17:3721–3727CrossRefGoogle Scholar
  52. Mitchell JFB, Karoly DJ, Hegerl GC, Zwiers FW, Allen MR, Marengo J (2001) Detection of climate change and attribution of causes. In: Houghton JT et al (eds) Climate Change 2001, The science of climate change. Cambridge University Press, Chap. 12, pp 697–738Google Scholar
  53. North GR, Stevens MJ (1998) Detecting climate signals in the surface temperature record. J Clim 11:563–577CrossRefGoogle Scholar
  54. North GR, Wu Q (2001) Detecting climate signals using space-time EOFs. J Clim 14:1839–1863CrossRefGoogle Scholar
  55. North GR, Bell TL, Cahalan RF, Moeng FJ (1982) Sampling errors in the estimation of Empirical Orthogonal Functions. Mon Weather Rev 110:699–706CrossRefGoogle Scholar
  56. North GR, Kim KY, Shen SSP, Hardin JW (1995) Detection of forced climate signals, 1: filter theory. J Clim 8:401–408CrossRefGoogle Scholar
  57. Parker DE (2004) Climate: large-scale warming is not urban. Nature 432:doi:10.1038/432290aGoogle Scholar
  58. Parker DE, Jones PD, Folland CK, Bevan A (1994) Interdecadal changes of surface temperature since the late nineteenth century. J Geophys Res 99:14373–14399CrossRefGoogle Scholar
  59. Penner JE, Wigley TML, Jaumann P, Santer BD, Taylor KE (1997) Anthropogenic aerosols and climate change: a method for calibrating climate forcing. In: Howe W, Henderson-Sellers A (eds) Communicating about climate: the story of the model evaluation consortium for climate assessment. Amsterdam The Netherlands: Gordon and Breach Science Publishers, pp 91–111Google Scholar
  60. Priestley MB (1981) Spectral analysis and time series. vol 1. Academic PressGoogle Scholar
  61. Ramaswamy V, Boucher O, Haigh J, Hauglaustaine D, Haywood J, Myhre G, Nakajima T, Shi GY, Solomon S (2001) Radiative forcing of climate change. In: Houghton JT, Ding Y, Griggs D J, Noguer M, van der Linden P, Dai X, Maskell K, Johnson CI (eds) Climate change (2001): The scientific basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University PressGoogle Scholar
  62. Ripley BD, Thompson M (1987) Regression techniques for the detection of analytical bias. Analyst 112:377–383CrossRefGoogle Scholar
  63. Robock A (2000) Volcanic eruptions and climate. Rev Geophys 38:191–219CrossRefGoogle Scholar
  64. Roeckner E, Bengtsson L, Feichter J, Lelieveld J, Rodhe H (1999) Transient climate change simulations with a coupled atmosphere-ocean GCM including the tropospheric sulfur cycle. J Clim 12:3004–3032CrossRefGoogle Scholar
  65. Santer BD, Mikolajewicz U, Bröggemann W, Cubasch U, Hasselmann K, Höck H, Maier-Reimer E, Wigley TML (1995) Ocean variability and its influence on the detectability of gr eenhouse warming signals. J Geophys Res 100:10693–10725CrossRefGoogle Scholar
  66. Santer BD, Wigley TML, Barnett TP, Anyamba E (1996a) Detection of climate change and attribution of causes. In: Houghton JT et al (eds) Climate Change 1995, The science of climate change. Cambridge University Press, Chap. 8, pp 411–443Google Scholar
  67. Santer BD, Wigley TML, Doutriaux C, Boyle JS, Hansen JE, Jones PD, Meehl GA, Roeckner E, Sengupta S, Taylor KE (2001) Accounting for the effects of volcanoes and ENSO in comparisons of modeled and observed temperature trends. J Geophys Res 106(D22):28033–28059CrossRefGoogle Scholar
  68. Santer BD, Wehner MF, Wigley TML, Sause R, Meehl GA, Taylor KE, Ammann C, Arblaster J, Washington WM, Boyle JS, Brüggemann W (2003) Contributions of anthropogenic and natural forcing to recent tropopause height changes. Science 301:479–482CrossRefGoogle Scholar
  69. Santer BD, Taylor KE, Wigley TML, Johns TC, Jones PD, Karoly DJ, Mitchell JFB, Oort AH, Penner JE, Ramaswamy V, Schwarzkopf MD, Stouffer RJ, Tett SA (1996b) Search for human influences on the thermal structure of the atmosphere. Nature 382:39–46CrossRefGoogle Scholar
  70. Sato M, Hansen JE, McCormick MP, Pollack JB (1993) Stratospheric aerosol depths (1850–1990). J Geophys Res 98:22987–22994CrossRefGoogle Scholar
  71. Smith RL, Wigley TML, Santer BDA (2003) bivariate time series approach to anthropogenic trend detection in hemispheric mean temperatures. J Clim 16:1228–1240CrossRefGoogle Scholar
  72. Stone DA, Allen MR, Stott PAA (2006) multi-model update on the detection and attribution of global surface warming. J Climate (in press)Google Scholar
  73. Stott PA (2003) Attribution of regional-scale temperature changes to anthropogenic and natural causes. Geophys Res Lett 30, doi:10.1029/2003GL017324Google Scholar
  74. Stott PA, Tett SFB (1998) Scale-dependent detection of climate change. J Clim 11:3282–3294CrossRefGoogle Scholar
  75. Stott PA, Tett SFB, Jones GS, Allen MR, Mitchell JFB, Jenkins GJ (2000) External control of twentieth century temperature by natural and anthropogenic forcings. Science 290:2133–2137CrossRefGoogle Scholar
  76. Stott PA, Tett SFB, Jones GS, Allen MR, Ingram WJ, Mitchell JFB (2001) Attribution of twentieth century climate change to natural and anthropogenic causes. Clim Dynam 17:1–21CrossRefGoogle Scholar
  77. Stott PA, Allen MR, Jones GS (2003) Estimating signal amplitudes in optimal fingerprinting II: application to general circulation models. Clim Dynam 21:493–500CrossRefGoogle Scholar
  78. Stott PA, Stone DA, Allen MR (2004) Human contribution to the European heatwave of 2003. Nature 432:610–614CrossRefGoogle Scholar
  79. Stott PA, Mitchell JFB, Allen MR, Delworth TL, Gregory JM, Meehl GA, Santer BD (2006) Observational constraints on past attributable warming and predictions of future global warming. J Clim 19:3055–3069CrossRefGoogle Scholar
  80. Svensmark H, FriisChristensen E (1997) Variation of cosmic ray flux and global cloud coverage—a missing link in solar-climate relationships. J Atmos Sol-Terr Phys 20:1225–1232CrossRefGoogle Scholar
  81. Tett SFB, Mitchell JFB, Parker DE, Allen MR (1996) Human influence on the atmospheric vertical temperature structure: detection and observations. Science 247:1170–1173CrossRefGoogle Scholar
  82. Tett SFB, Johns TC, Mitchell J (1997) Global and regional variability in a coupled AOGCM. Clim Dynam 13:303–323CrossRefGoogle Scholar
  83. Tett SFB, Stott PA, Allen MR, Ingram WJ, Mitchell JFB (1999) Causes of twentieth century temperature change near the Earth’s surface. Nature 399:569–572CrossRefGoogle Scholar
  84. Tett SFB, Jones GS, Stott PA, Hill DC, Mitchell JFB, Allen MR, Ingram WJ, Johns TC, Johnson CE, Jones A, Roberts DL, Sexton DMH, Woodage MJ (2002) Estimation of natural and anthropogenic contributions to twentieth century temperature change. J Geophys Res 107 (D16), art. no. 4306Google Scholar
  85. van Huffel S, Vanderwaal J (1994) The total least squares problem: computational aspects and analysis. SIAMGoogle Scholar
  86. Washington WM, Weatherly JW, Meehl GA, Semtner AJ, Bettge TW, Craig AP, Strand WG, Arblaster J, Wayland VB, James R, Zhang Y (2000) Parallel climate model (PCM) control and transient simulations. Clim Dynam 16:755–774CrossRefGoogle Scholar
  87. Weare BC, Nastrom JN (1982) Examples of extended empirical orthogonal function analyses. Mon Weather Rev 110:481–485CrossRefGoogle Scholar
  88. Wilks DS (1997) Resampling hypothesis tests for autocorrelated fields. J Clim 10:65–82CrossRefGoogle Scholar
  89. Zhang X, Zwiers FW, Stott PA (2006) Multi-model multi-signal climate change detection at regional scale. J Clim 19:4294–4307CrossRefGoogle Scholar
  90. Zwiers FW, Zhang X (2003) Toward regional scale climate change detection. J Clim 16:793–797CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • M. R. Allen
    • 1
  • N. P. Gillett
    • 2
    • 3
  • J. A. Kettleborough
    • 4
    • 5
  • G. Hegerl
    • 6
  • R. Schnur
    • 7
  • P. A. Stott
    • 8
  • G. Boer
    • 9
  • C. Covey
    • 10
  • T. L. Delworth
    • 11
  • G. S. Jones
    • 5
  • J. F. B. Mitchell
    • 5
  • T. P. Barnett
    • 12
  1. 1.Atmospheric, Oceanic and Planetary PhysicsUniversity of Oxford Clarendon LaboratoryParks RoadUK
  2. 2.School of Earth and Ocean SciencesUniversity of VictoriaVictoriaCanada
  3. 3.Climate Research Unit, School of Environmental SciencesUniversity of East AngliaNorwichUK
  4. 4.Space Science and Technology DepartmentRutherford Appleton LaboratoryDidcotUK
  5. 5. Met. OfficeExeterUK
  6. 6.Nicholas School for the Environment and Earth SciencesDuke UniversityDurhamUSA
  7. 7.Max Planck Institute for MeteorologyHamburgGermany
  8. 8.Met Office, Reading Unit, Dept. of MeteorologyUniversity of ReadingReadingUK
  9. 9.The Canadian Centre for Climate Modelling and AnalysisVictoriaCanada
  10. 10.PCMDI, Lawrence Livermore National LaboratoryLivermoreUSA
  11. 11.NOAA Geophysical Fluid Dynamics LaboratoryPrincetonUSA
  12. 12.Scripps Institution for OceanographyUniversity of CaliforniaSan DiegoUSA

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