Late Holocene North Atlantic climate "seesaws" and Greenland ice sheet (GISP2) palaeoclimates

Alastair George Dawson, L. Elliott, P. Mayeswki, P. Lockett, S. Noone, K. Hickey, T. Holt, P. Wadhams, I. D. L. Foster

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The oxygen-isotope record of palaeotemperature from Greenland ice cores has for many years been the kingpin of climate reconstructions for the North Atlantic region and northern Europe, An air temperature, 'seesaw' between Greenland and northern Europe. first described in AD 1765, is also well known and is related to the North Atlantic Oscillation (NAO). Whereas the NAO index series is based on instrumental records of air pressure, the North Atlantic climate 'seesaw' has conventionally been based on air-temperature records, Here we describe relationships between this 'seesaw' mechanism and the Greenland (GISP2) oxygen-isotope chronology of air-temperature variations, as well as relationships between GISP2 Na+ (sea-salt) variations and instrumental records of North Atlantic storminess. The GISP2 proxy air-temperature record is calibrated for the last 130 years with instrumental weather records for West Greenland, while the Na+ series is compared with instrumental records of North Atlantic storminess change. Reconstruction of an annual series of these climate parameters for the last 1000 years shows that during the 'Mediaeval Warm Period' there were no years characterized by high Na+ extremes (high North Atlantic storminess) but there were many years when there were extremes of temperature. Remarkably, there A ere no years of exceptionally low air temperature and high Na+ precipitation at GISP2 between AD 1650 and 1710. a period of time that in northern Europe incorporates the period of maximum 'Little Ice Age' cooling. It would appear also that for the last thousand years the most extreme 'seesaw' winters when GISP2 temperatures were very low and Na+ concentrations were high occurred in discrete clusters and pairs of years.

Original languageEnglish
Pages (from-to)381-392
Number of pages11
JournalThe Holocene
Volume13
Issue number3
DOIs
Publication statusPublished - Feb 2003

Keywords

  • Greenland ice cores
  • GISP2
  • sea salt
  • temperature
  • 'Mediaeval Warm Period'
  • 'Little Ice Age'
  • North Atlantic Oscillation
  • North Atlantic seesaw
  • late Holocene
  • ATMOSPHERIC CIRCULATION
  • OXYGEN-ISOTOPE
  • OSCILLATION
  • CORE
  • TEMPERATURES
  • RECORDS
  • SIGNAL
  • VARIABILITY
  • EUROPE
  • GRIP

Cite this

Dawson, A. G., Elliott, L., Mayeswki, P., Lockett, P., Noone, S., Hickey, K., ... Foster, I. D. L. (2003). Late Holocene North Atlantic climate "seesaws" and Greenland ice sheet (GISP2) palaeoclimates. The Holocene, 13(3), 381-392. https://doi.org/10.1191/0959683603hl631rp

Late Holocene North Atlantic climate "seesaws" and Greenland ice sheet (GISP2) palaeoclimates. / Dawson, Alastair George; Elliott, L.; Mayeswki, P.; Lockett, P.; Noone, S.; Hickey, K.; Holt, T.; Wadhams, P.; Foster, I. D. L.

In: The Holocene, Vol. 13, No. 3, 02.2003, p. 381-392.

Research output: Contribution to journalArticle

Dawson, AG, Elliott, L, Mayeswki, P, Lockett, P, Noone, S, Hickey, K, Holt, T, Wadhams, P & Foster, IDL 2003, 'Late Holocene North Atlantic climate "seesaws" and Greenland ice sheet (GISP2) palaeoclimates', The Holocene, vol. 13, no. 3, pp. 381-392. https://doi.org/10.1191/0959683603hl631rp
Dawson, Alastair George ; Elliott, L. ; Mayeswki, P. ; Lockett, P. ; Noone, S. ; Hickey, K. ; Holt, T. ; Wadhams, P. ; Foster, I. D. L. / Late Holocene North Atlantic climate "seesaws" and Greenland ice sheet (GISP2) palaeoclimates. In: The Holocene. 2003 ; Vol. 13, No. 3. pp. 381-392.
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T1 - Late Holocene North Atlantic climate "seesaws" and Greenland ice sheet (GISP2) palaeoclimates

AU - Dawson, Alastair George

AU - Elliott, L.

AU - Mayeswki, P.

AU - Lockett, P.

AU - Noone, S.

AU - Hickey, K.

AU - Holt, T.

AU - Wadhams, P.

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AB - The oxygen-isotope record of palaeotemperature from Greenland ice cores has for many years been the kingpin of climate reconstructions for the North Atlantic region and northern Europe, An air temperature, 'seesaw' between Greenland and northern Europe. first described in AD 1765, is also well known and is related to the North Atlantic Oscillation (NAO). Whereas the NAO index series is based on instrumental records of air pressure, the North Atlantic climate 'seesaw' has conventionally been based on air-temperature records, Here we describe relationships between this 'seesaw' mechanism and the Greenland (GISP2) oxygen-isotope chronology of air-temperature variations, as well as relationships between GISP2 Na+ (sea-salt) variations and instrumental records of North Atlantic storminess. The GISP2 proxy air-temperature record is calibrated for the last 130 years with instrumental weather records for West Greenland, while the Na+ series is compared with instrumental records of North Atlantic storminess change. Reconstruction of an annual series of these climate parameters for the last 1000 years shows that during the 'Mediaeval Warm Period' there were no years characterized by high Na+ extremes (high North Atlantic storminess) but there were many years when there were extremes of temperature. Remarkably, there A ere no years of exceptionally low air temperature and high Na+ precipitation at GISP2 between AD 1650 and 1710. a period of time that in northern Europe incorporates the period of maximum 'Little Ice Age' cooling. It would appear also that for the last thousand years the most extreme 'seesaw' winters when GISP2 temperatures were very low and Na+ concentrations were high occurred in discrete clusters and pairs of years.

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KW - OXYGEN-ISOTOPE

KW - OSCILLATION

KW - CORE

KW - TEMPERATURES

KW - RECORDS

KW - SIGNAL

KW - VARIABILITY

KW - EUROPE

KW - GRIP

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DO - 10.1191/0959683603hl631rp

M3 - Article

VL - 13

SP - 381

EP - 392

JO - The Holocene

JF - The Holocene

SN - 0959-6836

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