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A chironomid-based reconstruction of summer temperatures in NW Iceland since AD 1650

By P.G. Langdon, C.J. Caseldine, I.W. Croudace, S. Jarvis, S. Wastegard and T.C. Crowford

Abstract

Few studies currently exist that aim to validate a proxy chironomid-temperature reconstruction with instrumental temperature measurements. We used a reconstruction from a chironomid percentage abundance data set to produce quantitative summer temperature estimates since AD 1650 for NW Iceland through a transfer function approach, and validated the record against instrumental temperature measurements from Stykkishólmur in western Iceland. The core was dated through Pb-210, Cs-137 and tephra analyses (Hekla 1693) which produced a well-constrained dating model across the whole study period. Little catchment disturbance, as shown through geochemical (Itrax) and loss-on-ignition data, throughout the period further reinforce the premise that the chironomids were responding to temperature and not other catchment or within-lake variables. Particularly cold phases were identified between AD 1683–1710, AD 1765–1780 and AD 1890–1917, with relative drops in summer temperatures in the order of 1.5–2°C. The timing of these cold phases agree well with other evidence of cooler temperatures, notably increased extent of Little Ice Age (LIA) glaciers. Our evidence suggests that the magnitude of summer temperature cooling (1.5–2°C) was enough to force LIA Icelandic glaciers into their maximum Holocene extent, which is in accordance with previous modelling experiments for an Icelandic ice cap (Langjökull)

Topics: GC, GE
Year: 2011
OAI identifier: oai:eprints.soton.ac.uk:177651
Provided by: e-Prints Soton

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Citations

  1. (2011). 451–460Author's personal copy
  2. (2009). A doi
  3. (2009). A 700 year record of temperature and nutrient changes in a small eutrophied lake in southern Finland. doi
  4. (1992). A new daily central England temperature series. doi
  5. A new lichenometric dating curve for southwest Iceland. Geografiska Annaler 83A, doi
  6. (2006). A northwest North American training set: distribution of freshwater midges in relation to air temperature and lake depth. doi
  7. (2003). a potential alternative for dating first human impact. doi
  8. (2007). Abandoned farms, volcanic impacts, and woodland management: revisiting Þjórsárdalur, the "Pompeii of Iceland". doi
  9. (2008). Abrupt climate changes for Iceland during the last millennium: evidence from high resolution sea ice reconstructions. doi
  10. (2009). An overview of distal tephrostratigraphy in Northern Europe during the last 1000 years. doi
  11. (1990). Application of fallout Cs-137 for measuring soil erosion and sediment accumulation rates and patterns: a review. doi
  12. (2006). Assessing lake eutrophication using chironomids: understanding the nature of community response in different lake types. doi
  13. (2003). C2 User guide. Software for ecological and palaeoecological data analysis and visualisation.
  14. (2001). Chironomids as indicators of climate change: a 100-lake training set from a subarctic region of northern Sweden (Lapland).
  15. (2003). Chironomids as quantitative indicators of mean July air temperature: validation by comparison with century-long meteorological records from northern Sweden.
  16. (2001). Chironomids, temperature and numerical models: a reply to Seppälä. doi
  17. (2009). Climate of the Little Ice Age and the past 2000 years in Northeast Iceland inferred from chironomids and other lake sediment proxies. doi
  18. (2010). Combining contemporary ecology and palaeolimnology to understand shallow lake ecosystem change. doi
  19. (2002). Correlation of Late Holocene terrestrial and marine tephra markers, north Iceland: implications for reservoir age changes. doi
  20. (1974). Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition: comparison with other methods. doi
  21. (1968). Determination of low levels of polonium-210 in environmental materials. doi
  22. (2006). Early Holocene climate variability and the timing and extent of the Holocene Thermal Maximum (HTM) in Northern Iceland. doi
  23. (2003). Efstadalsvatn—a multi-proxy study of a Holocene lacustrine sequence from NW Iceland.
  24. (2008). Environmental controls on modern chironomid faunas from NW Iceland and implications for reconstructing climate change. doi
  25. (2006). Evaluating the use of subfossil chironomids for the reconstruction of Holocene climate
  26. (2005). Evidence for solar forcing of sea-surface temperature on the North Icelandic Shelf during the late Holocene. doi
  27. (1998). Extraction of rhyolitic component of Vedde microtephra from minerogenic lake sediments.
  28. (2006). Fossil midges (Diptera: Chironomidae) as palaeoclimatic indicators for the Eurasion region. doi
  29. (1978). Geochemical and geophysical applications of radioactive lead isotopes. In:
  30. (1999). Geochemistry of historical-age silicic tephras in Iceland. The Holocene 9, doi
  31. (2007). Glacier fluctuation and inferred climatology of Langjökull ice cap through the Little Ice Age. doi
  32. (2009). Holocene and latest Pleistocene climate and glacier fluctuations in Iceland. doi
  33. (2005). Holocene climate variability at multidecadal time scales detected by sedimentological indicators in a shelf core NW off Iceland. doi
  34. (1999). Holocene palaeoclimatic reconstructions in Northern Iceland: approaches and results. doi
  35. (2007). Holocene temperature history of northern Iceland inferred from subfossil midges. doi
  36. (2006). ITRAX: description and evaluation of a new multi function X-ray core scanner. doi
  37. (2009). Lake sediment evidence for late-Holocene climate change and landscape erosion in western Iceland. doi
  38. (2008). Landscape change and resilience theory: a palaeoenvironmental assessment from Yunnan, doi
  39. (2007). Landscapes of settlement in Northern Iceland: historical ecology of human impact and climate fluctuation on the millennial scale. doi
  40. (2000). Late-glacial fossil midge stratigraphies (Insecta: Diptera: Chironomidae) from the Swiss Alps. doi
  41. (2003). Late-Holocene paleoenvironments of northwest Iceland from lake sediments. doi
  42. (2004). Lichenometric dating in southeast Iceland: the size-frequency approach. doi
  43. (2001). Little Ice Age” research: a perspective from Iceland. doi
  44. (2005). Local knowledge and travellers' tales: a selection of climatic observations in Iceland. Iceland—modern processes and past environments. doi
  45. (2002). Low-frequency signals in long tree-ring chronologies and the reconstruction of past temperature variability. doi
  46. (2008). Multiproxy evidence for the ‘Little Ice Age’ from Lake Hampträsk, doi
  47. (2000). Palaeolimnological approaches to climate change, with special regard to the biological record. doi
  48. (2004). Reconstructing climate and environmental change in Northern England through chironomid and pollen analyses: evidence from Talkin Tarn, doi
  49. (1998). Reference Manual and User'sGuide toCanoco for Windows: Software for Canonical Community Ordination (version 4.5.2). Microcomputer Power,
  50. (2006). Responses of mountain ice caps in central Iceland to Holocene climate change. doi
  51. (2009). Sea ice and marine climate variability for NW Iceland/Denmark Strait over the last 2000 cal. yr BP. doi
  52. (1995). Seven tephra isochrones in Scotland. doi
  53. (2007). Summer sea-surface temperatures and climate events on the North Icelandic shelf through the last 3000 years. doi
  54. (2004). Temporal changes in Holocene δ18O records from the northwest and central North Iceland shelf. doi
  55. (2000). Tephrochronology, environmental change, and the Norse colonisation of Iceland. doi
  56. (1978). The calculation of 210Pb dates assuming a constant rate of supply of unsupported 210Pb to the sediment. doi
  57. (2004). The dynamics of Chironomidae (Insecta: Diptera) assemblages in response to environmental change during the past 700 years on Svalbard. doi
  58. (2007). The identification and use of Palaearctic Chironomidae Larvae doi
  59. (1988). The Little Ice Age. doi
  60. (1984). The past climate and sea-ice record from Iceland, Part 1: data to AD 1780. doi
  61. (2006). Variability of the North Atlantic Current during the last 2000 years based on shelf bottom water and sea surface temperatures along an open ocean/shallow marine transect in western Europe. doi
  62. (1992). Zoobenthos ecology of Thingvallavatn: vertical distribution, abundance, population dynamics and production. doi

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