Journal of Paleolimnology

, Volume 48, Issue 1, pp 275–286 | Cite as

Fusing pollen-stratigraphic and dendroclimatic proxy data to reconstruct summer temperature variability during the past 7.5 ka in subarctic Fennoscandia

  • Samuli Helama
  • Heikki Seppä
  • Anne E. Bjune
  • H. John B. Birks
Original paper

Abstract

A new palaeoclimatic reconstruction of mid-summer (July) temperatures for the last 7.5 ka in northern Fennoscandia is presented. It is based on two botanical proxies: spectra of fossil pollen and tree rings of Scots pine logs recovered from lacustrine sediments in the Arctic tree-line region. A newly developed method of proxy fusion is used to integrate the proxy-specific reconstructions of past summer temperature variability based on the pollen-stratigraphic and dendroclimatic data. The rationale behind the method is that the two proxies are likely to be connected to climate variability in a timescale-dependent fashion and, accordingly, the new reconstruction makes use of the low- and high-frequencies from pollen-stratigraphic and tree-ring data, respectively. The most prominent features of the new reconstruction are: (1) the long-term decline of temperatures by 2.0 °C over the past 7.5 ka, (2) the mid-Holocene warmth culminating between 5 and 4 ka as a deviation from the cooling trend, (3) the Little Ice Age cool phase between 0.7 and 0.1 ka, and (4) the subsequent warming during the past century. These periods are superimposed on year-to-year variations in climate as dated to calendar-year accuracy by dendrochronology. Within the modern period, the years 1934 and 1937 are among the warmest, and the years 1903 and 1910 are among the coldest summers in the context of the past 7.5 ka. On average, the reconstructed Holocene climate was approximately 0.85 °C warmer than the twentieth century.

Keywords

Climate variability Climatic change Dendrochronology Paleoclimatology Paleolimnology Pollen data Proxy fusion 

Notes

Acknowledgments

HJBB is grateful to Cathy Jenks for her editorial help. The work of SH was supported by the Lapland Regional Fund of the Finnish Cultural Foundation and HS by the Academy of Finland (QVR and CLICHE projects) and by the Nordic top-level research initiative CRAICC. This is publication A 388 from the Bjerknes Centre for Climate Research. Two anonymous reviewers provided helpful comments.

Supplementary material

10933_2012_9598_MOESM1_ESM.xls (340 kb)
Supplementary material 1 (XLS 340 kb)
10933_2012_9598_MOESM2_ESM.xls (994 kb)
Supplementary material 2 (XLS 993 kb)

References

  1. Arjava A (1995) The mystery cloud of 536 CE in the Mediterranean sources. Dumbart Oaks Pap 59:73–94CrossRefGoogle Scholar
  2. Berger A (1978) Long-term variations of caloric insolation resulting from the Earth’s orbital elements. Quat Res 9:139–167CrossRefGoogle Scholar
  3. Berger A (1988) Milankovitch theory and climate. Rev Geophys 26:624–657CrossRefGoogle Scholar
  4. Bigler C, Larocque I, Peglar SM, Birks HJB, Hall RI (2002) Quantitative multiproxy assessment of long-term patterns of Holocene environmental change from a small lake near Abisko, northern Sweden. Holocene 12:481–496CrossRefGoogle Scholar
  5. Birks HJB (1995) Quantitative palaeoenvironmental reconstructions. In: Maddy D, Brew JS (eds) Statistical modelling of quaternary science data. Technical guide 5. Quaternary Research Association, Cambridge, pp 161–254Google Scholar
  6. Birks HJB (2005) Fifty years of quaternary pollen analysis in Fennoscandia 1954–2004. Grana 44:1–22CrossRefGoogle Scholar
  7. Birks HJB (2008) Holocene climate research—progress, paradigms, and problems. In: Battarbee RW, Binney H (eds) Natural climate variability and global warming: a Holocene perspective. Wiley-Blackwell, Chichester, pp 7–57CrossRefGoogle Scholar
  8. Birks HJB, Seppä H (2004) Pollen-based reconstructions of the late-quaternary climate in Europe—progress, problems, and pitfalls. Acta Palaeobot 44:317–334Google Scholar
  9. Birks HJB, Seppä H (2010) Late-Quaternary palaeoclimatic research in Fennoscandia—a historical review. Boreas 39:655–673CrossRefGoogle Scholar
  10. Birks HJB, Heiri O, Seppä H, Bjune AE (2010) Strengths and weaknesses of quantitative climate reconstructions based on late-Quaternary biological proxies. Open Ecol J 3:68–110CrossRefGoogle Scholar
  11. Bjune AE, Birks HJB (2008) Holocene vegetation dynamics and inferred climate changes at Svanåvatnet, Mo i Rana, northern Norway. Boreas 37:146–156CrossRefGoogle Scholar
  12. Bjune AE, Birks HJB, Seppä H (2004) Holocene vegetation and climate history on a continental-oceanic transect in northern Fennoscandia based on pollen and plant macrofossils. Boreas 33:211–223CrossRefGoogle Scholar
  13. Bjune AE, Seppä H, Birks HJB (2009) Quantitative summer-temperature reconstructions for the last 2000 years based on pollen-stratigraphical data from northern Fennoscandia. J Paleolimnol 41:43–56CrossRefGoogle Scholar
  14. Bjune AE, Birks HJB, Peglar SM, Odland A (2010) Developing a modern pollen-climate calibration data-set for Norway. Boreas 39:674–688CrossRefGoogle Scholar
  15. Boettger T, Hiller A, Kremenetski K (2003) Mid-Holocene warming in the northwest Kola Peninsula, Russia: northern pine-limit movement and stable isotope evidence. Holocene 13:403–410CrossRefGoogle Scholar
  16. Bradley RS, Jones PD (1993) ‘Little Ice Age’ summer temperature variations: their nature and relevance to recent global warming trends. Holocene 3:367–376CrossRefGoogle Scholar
  17. Briffa KR, Jones PD, Pilcher JR, Hughes MK (1988) Reconstructing summer temperatures in northern Fennoscandia back to AD 1700 using tree-ring data from Scots pine. Arct Alp Res 20:385–394CrossRefGoogle Scholar
  18. Broecker WS (2001) Was the medieval warm period global? Science 291:1497–1499CrossRefGoogle Scholar
  19. Cook ER, Peters K (1981) The smoothing spline: a new approach to standardizing forest interior tree-ring series for dendroclimatic studies. Tree-Ring Bull 41:45–53Google Scholar
  20. Cook ER, Briffa KR, Meko DM, Graybill DA, Funkhouser G (1995) The ‘segment length curse’ in long tree-ring chronology development for palaeoclimatic studies. Holocene 5:229–237CrossRefGoogle Scholar
  21. Crowley TJ (2000) Causes of climate change over the past 1000 years. Science 289:270–277CrossRefGoogle Scholar
  22. D’Arrigo R, Wilson R, Jacoby G (2006) On the long-term context for late twentieth century warming. J Geophys Res 111:D03103CrossRefGoogle Scholar
  23. Eronen M (1979) The retreat of pine forest in Finnish Lapland since the Holocene climatic optimum: a general discussion with radiocarbon evidence from subfossil pines. Fennia 157:93–114Google Scholar
  24. Eronen M, Hyvärinen H, Zetterberg P (1999) Holocene humidity changes in northern Finnish Lapland inferred from lake sediments and submerged Scots pines dated by tree rings. Holocene 9:569–580CrossRefGoogle Scholar
  25. Eronen M, Zetterberg P, Briffa KR, Lindholm M, Meriläinen J, Timonen M (2002) The supra-long Scots pine tree-ring record for Finnish Lapland. Part 1: chronology construction and initial references. Holocene 12:673–680CrossRefGoogle Scholar
  26. Esper J, Frank DC, Wilson RJS, Briffa KR (2005) Effect of scaling and regression on reconstructed temperature amplitude for the past millennium. Geophys Res Lett 32:L07711CrossRefGoogle Scholar
  27. Fritts HC (1976) Tree rings and climate. Academic Press, LondonGoogle Scholar
  28. Grudd H, Briffa KR, Karlén W, Bartholin TS, Jones PD, Kromer B (2002) A 7400-year tree-ring chronology in northern Swedish Lapland: natural climatic variability. Holocene 12:657–665CrossRefGoogle Scholar
  29. Guiot J (1985) The extrapolation of recent climatological series with spectral canonical regression. J Climatol 5:325–335CrossRefGoogle Scholar
  30. Guiot J, Corona C, ESCARSEL members (2010) Growing season temperatures in Europe and climate forcings over the past 1400 years. PLoS ONE 5(4):e9972. doi: 10.1371/journal.pone.0009972 CrossRefGoogle Scholar
  31. Heegaard E, Birks HJB, Telford RJ (2005) Relationships between calibrated ages and depth in stratigraphical sequences: an estimation procedure by mixed-effect regression. Holocene 15:612–618CrossRefGoogle Scholar
  32. Heikkilä M, Seppä H (2003) A 11,000 yr palaeotemperature reconstruction from the southern boreal zone in Finland. Quat Sci Rev 22:541–554CrossRefGoogle Scholar
  33. Helama S (2004) Millennia-long tree-ring chronologies as records of climate variability in Finland. Doctoral dissertation, University of HelsinkiGoogle Scholar
  34. Helama S, Lindholm M, Timonen M, Meriläinen J, Eronen M (2002) The supra-long Scots pine tree-ring record for Finnish Lapland: part 2, interannual to centennial variability in summer temperatures for 7500 years. Holocene 12:681–687CrossRefGoogle Scholar
  35. Helama S, Holopainen J, Timonen M, Ogurtsov MG, Lindholm M, Meriläinen J, Eronen M (2004) Comparison of living-tree and subfossil ringwidths with summer temperatures from 18th, 19th and 20th centuries in northern Finland. Dendrochronologia 21:147–154CrossRefGoogle Scholar
  36. Helama S, Timonen M, Lindholm M, Meriläinen J, Eronen M (2005) Extracting long period climate fluctuations from tree-ring chronologies over timescales of centuries to millennia. Int J Climatol 25:1767–1779CrossRefGoogle Scholar
  37. Helama S, Mielikäinen K, Timonen M, Eronen M (2008) Finnish supra-long tree-ring chronology extended to 5634 BC. Nor J Geogr 62:271–277CrossRefGoogle Scholar
  38. Helama S, Meriläinen J, Tuomenvirta H (2009a) Multicentennial megadrought in northern Europe coincided with a global El Niño–Southern Oscillation drought pattern during the Medieval Climate Anomaly. Geology 37:175–178CrossRefGoogle Scholar
  39. Helama S, Timonen M, Holopainen J, Ogurtsov MG, Mielikäinen K, Eronen M, Lindholm M, Meriläinen J (2009b) Summer temperature variations in Lapland during the Medieval Warm Period and the Little Ice Age relative to natural instability of thermohaline circulation on multi-decadal and multi-centennial scales. J Quat Sci 24:450–456CrossRefGoogle Scholar
  40. Helama S, Macias Fauria M, Mielikäinen K, Timonen M, Eronen M (2010a) Sub-Milankovitch solar forcing of past climates: mid and late Holocene perspectives. Geol Soc Am Bull 122:1981–1988CrossRefGoogle Scholar
  41. Helama S, Seppä H, Birks HJB, Bjune AE (2010b) Reconciling pollen-stratigraphical and tree-ring evidence for high- and low-frequency temperature variability in the past millennium. Quat Sci Rev 29:3905–3918CrossRefGoogle Scholar
  42. Holopainen J (2006) Reconstructions of past climates from documentary and natural sources in Finland since the 18th century. University of Helsinki, Doctoral dissertation. Publ Dep Geol D9:1–33Google Scholar
  43. Kerr RA (2008) Climate tipping points come in from the cold. Science 319:153Google Scholar
  44. Klingbjer P, Moberg A (2003) A composite monthly temperature record from Tornedalen in northern Sweden, 1802–2002. Int J Climatol 23:1465–1494CrossRefGoogle Scholar
  45. Lenton TM, Held H, Kriegler E, Hall JW, Lucht W, Rahmstorf S, Schellnhuber HJ (2008) Tipping elements in the Earth’s climate system. Proc Natl Acad Sci USA 105:1786–1793CrossRefGoogle Scholar
  46. Li B, Nychka DW, Amman CW (2010) The value of multiproxy reconstructions of past climate. J Am Stat Assoc 105:863–895Google Scholar
  47. Linderholm HW, Björklund J, Seftigen K, Gunnarson BE, Drobyshev I, Jeong J-H, Stridbeck P, Liu Y (2010) Dendroclimatology in Fennoscandia from past accomplishments to future potential. Clim Past 6:93–114CrossRefGoogle Scholar
  48. Lindsay RW, Zhang J (2005) The thinning of Arctic sea ice, 1988–2003: have we passed a tipping point? J Clim 18:4879–4894CrossRefGoogle Scholar
  49. Macias Fauria M, Grinsted A, Helama S, Moore J, Timonen M, Martma T, Isaksson E, Eronen M (2010) Unprecedented low twentieth century winter sea ice extent in the Western Nordic Seas since A.D. 1200. Clim Dyn 34:781–795CrossRefGoogle Scholar
  50. Mann ME (2002) The value of multiple proxies. Science 297:1481–1482CrossRefGoogle Scholar
  51. Mann ME, Zhang Z, Rutherford S, Bradley RS, Hughes MK, Shindell D, Ammann C, Faluvegi G, Ni F (2009) Global signatures and dynamical origins of the Little Ice Age and Medieval Climate Anomaly. Science 326:1256–1260CrossRefGoogle Scholar
  52. Matthews JA, Briffa KR (2005) The ‘Little Ice Age’: re-evaluation of an evolving concept. Geogr Ann 87A:17–36CrossRefGoogle Scholar
  53. Moberg A, Sonechkin DM, Holmgren K, Datsenko NM, Karlén W, Lauritzen SE (2005) Highly variable Northern Hemisphere temperatures reconstructed from low- and high-resolution proxy data. Nature 433:613–617CrossRefGoogle Scholar
  54. Moen A (1999) National Atlas of Norway—Vegetation. Norwegian mapping authority, HønefossGoogle Scholar
  55. Renssen H, Goosse H, Fichefet T, Brovkin V, Driesschaert E, Wolk F (2005) Simulating the Holocene climate evolution at northern high latitudes using a coupled atmosphere-sea ice-ocean-vegetation model. Clim Dyn 24:23–43CrossRefGoogle Scholar
  56. Rodionov SN (2004) A sequential algorithm for testing climate regime shifts. Geophys Res Lett 31. doi: 10.1029/2004GL019448
  57. Russill C, Nyssa Z (2009) The tipping point trend in climate change communication. Global Environ Chang 19:336–344CrossRefGoogle Scholar
  58. Seppä H (1996) Post-glacial dynamics of vegetation and treelines in the far north of Fennoscandia. Fennia 174:1–96Google Scholar
  59. Seppä H (1998) Postglacial trends in palynological richness in the northern Fennoscandian tree-line area and their ecological interpretation. Holocene 8:43–53CrossRefGoogle Scholar
  60. Seppä H, Birks HJB (2001) July mean temperature and annual precipitation trends during the Holocene in the Fennoscandian tree-line area: pollen-based reconstructions. Holocene 11:527–539CrossRefGoogle Scholar
  61. Seppä H, Birks HJB (2002) Holocene climate reconstructions from the Fennoscandian tree-line area based on pollen data from Toskaljavri. Quat Res 57:191–199CrossRefGoogle Scholar
  62. Seppä H, Weckström J (1999) Holocene vegetational and limnological changes in the Fennoscandian tree-line area as documented by pollen and diatom records from Lake Tsuolbmajavri, Finland. Écoscience 6:621–635Google Scholar
  63. Seppä H, Nyman M, Korhola A, Weckström J (2002) Changes of treelines and alpine vegetation in relation to post-glacial climate dynamics in northern Fennscandia based on pollen and chironomid records. J Quat Sci 17:287–301CrossRefGoogle Scholar
  64. Seppä H, MacDonald GM, Birks HJB, Gervais BR, Snyder JA (2008) Late- Quaternary summer temperature changes in the northern-European tree-line region. Quat Res 69:404–412CrossRefGoogle Scholar
  65. Seppä H, Bjune AE, Telford RJ, Birks HJB, Veski S (2009) Last nine-thousand years of temperature variability in Northern Europe. Clim Past 5:523–535CrossRefGoogle Scholar
  66. Solanki SK, Usoskin IG, Kromer B, Schüssler M, Beer J (2004) Unusual activity of the Sun during recent decades compared to the previous 11,000 years. Nature 431:1084–1087CrossRefGoogle Scholar
  67. Tietäväinen H, Tuomenvirta H, Venäläinen H (2010) Annual and seasonal mean temperatures in Finland during the last 160 years based on gridded temperature data. Int J Climatol 30:2247–2256CrossRefGoogle Scholar
  68. Tiwari RK, Maiti S (2011) Bayesian neural network modeling of tree-ring temperature variability record from the Western Himalayas. Nonlin Process Geophys 18:515–528CrossRefGoogle Scholar
  69. Velle G, Kongshavn K, Birks HJB (2011) Minimizing the edge-effect in environmental reconstructions by trimming the calibration set: chironomid-inferred temperatures from Spitsbergen. Holocene 21:417–430CrossRefGoogle Scholar
  70. Yang B, Sonechkin DM, Datsenko NM, Ivashchenko NN, Liu J, Qin C (2011) Eigen analysis of tree-ring records: part 1, a limited representativeness of regional curve. Theor Appl Climatol 106:489–497CrossRefGoogle Scholar
  71. Yang B, Sonechkin DM, Datsenko NM, Ivashchenko NN, Liu J, Qin C (2012) Eigen analysis of tree-ring records: part 2, posing the Eigen problem. Theor Appl Climatol 107:131–141CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Samuli Helama
    • 1
  • Heikki Seppä
    • 2
  • Anne E. Bjune
    • 3
  • H. John B. Birks
    • 3
    • 4
    • 5
    • 6
  1. 1.Arctic CentreUniversity of LaplandRovaniemiFinland
  2. 2.Department of Geosciences and GeographyUniversity of HelsinkiHelsinkiFinland
  3. 3.Bjerknes Centre for Climate ResearchUniversity of BergenBergenNorway
  4. 4.Department of BiologyUniversity of BergenBergenNorway
  5. 5.Environmental Change Research CentreUniversity College LondonLondonUK
  6. 6.School of Geography and the EnvironmentUniversity of OxfordOxfordUK

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