The decade-resolved record of the response of East Siberia to abrupt climatic changes in the North Atlantic over the last glacial-interglacial cycle

• Published in: Doklady earth sciences Vol. 421; no. 2; pp. 961 - 964
• Main Authors: Goldberg, E. L., Phedorin, M. A., Chebykin, E. P., Khlystov, O. M., Zhuchenko, N. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.08.2008; Springer Nature B.V
• Subjects: Climate change; Earth and Environmental Science; Earth Sciences; Geography; Geology; Ice; Sediments; Studies; North Atlantic region; Siberia; AN, North Atlantic; INW, Russia, Siberia; Biogenic Silica; DOKLADY Earth Science; Diatom Abundance; Marine Isotope Stage; River Runoff
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X08060226

Records of climatic changes obtained in Greenland and Arctic ice with year-decade resolution have also stimulated investigations with a similar resolution for other climatic archives, such as sediments of lakes and bogs. Such a high resolution is needed for the detection of abrupt climatic changes in different regions of the planet. Sudden and short warming and cooling (DansgaardOeschger, D/O) events show up most clearly in isotope records from Greenland ice during the Last Glaciation 1574 ka BP. In the course of such events, the temperature over Greenland suddenly rose by 1015C in just 1050 yr and fell nearly in a similar manner to the initial state in 400 1000 yr. Not only did the temperature change dramatically, but humidity on the continent also changed synchronously, since almost all the D/O peaks were accompanied by a synchronous abrupt increase in the atmospheric content of methane, which is generated in the course of bog formation and expansion.