Thousand years of winter surface air temperature variations in Svalbard and northern Norway reconstructed from ice-core data

Polar research

Elisabeth Isaksson¹  Veijo Pohjola²  John Moore³  Roderik S. W. van de Wal⁴  Fred Godtliebsen⁶  Harro A.J. Meijer⁷  Tonu Martma⁸  Dmitry Divine⁹ 

[1] Department of Mathematics and Statistics, Faculty of Science and Technology, University of TromsøNO-9037 Tromsø Norway Correspondence;Arctic Centre, University of Lapland, Pohjoisranta 4FI-96101 Rovaniemi Finland;Centre for Isotope Research, University of Groningen, Nijenborgh 4NL-9747 AG Groningen The Netherlands;Department of Earth Sciences, Uppsala University Villavägen 16SE-752 36 Uppsala Sweden;Department of Mathematics and Statistics, Faculty of Science and Technology, University of TromsøNO-9037 Tromsø Norway;Institute for Marine and Atmospheric research Utrecht, Utrecht University Princetonplein 5NL-3584 CC Utrecht The Netherlands;Institute of Geology, Tallinn University of Technology, Ehitajate tee 5EE-19086 Tallinn Estonia;Norwegian Polar Institute, Fram CentreNO-9296 Tromsø Norway;Norwegian Polar Institute, Fram CentreNO-9296 Tromsø Norway

关键词: Palaeoclimatology;    late Holocene;    winter temperature;    regional climate;    stable water isotopes;    palaeoreconstruction.;   

DOI  :  10.3402/polar.v30i0.7379

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

Two isotopic ice core records from western Svalbard are calibrated to reconstruct more than 1000 years of past winter surface air temperature variations in Longyearbyen, Svalbard, and Vardø, northern Norway. Analysis of the derived reconstructions suggests that the climate evolution of the last millennium in these study areas comprises three major sub-periods. The cooling stage in Svalbard (ca. 800–1800) is characterized by a progressive winter cooling of approximately 0.9 °C century−1 (0.3 °C century−1 for Vardø) and a lack of distinct signs of abrupt climate transitions. This makes it difficult to associate the onset of the Little Ice Age in Svalbard with any particular time period. During the 1800s, which according to our results was the coldest century in Svalbard, the winter cooling associated with the Little Ice Age was on the order of 4 °C (1.3 °C for Vardø) compared to the 1900s. The rapid warming that commenced at the beginning of the 20th century was accompanied by a parallel decline in sea-ice ...

【 授权许可】

CC BY-NC