Detailed insight into Arctic climatic variability during MIS 11c at Lake El'gygytgyn, NE Russia

Vogel, Hendrik; Meyer-Jacob, C.; Melles, M.; Brigham-Grette, J.; Andreev, A. A.; Wennrich, V.; Tarasov, P. E.; Rosén, P. (2013). Detailed insight into Arctic climatic variability during MIS 11c at Lake El'gygytgyn, NE Russia. Climate of the past, 9(4), pp. 1467-1479. Copernicus Publications 10.5194/cp-9-1467-2013

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Here we present a detailed multi-proxy record of the climate and environmental evolution at Lake El'gygytgyn, Far East Russian Arctic during the period 430–395 ka covering the marine isotope stage (MIS) 12/11 transition and the thermal maximum of super interglacial MIS 11c. The MIS 12/11 transition at Lake El'gygytgyn is characterized by initial warming followed by a cold reversal implying similarities to the last deglaciation. The thermal maximum of MIS 11c is characterized by full and remarkably stable interglacial conditions with mean temperatures of the warmest month (MTWM) ranging between ca. 10–15 °C; annual precipitation (PANN) ranging between ca. 300–600 mm; strong in-lake productivity coinciding with dark coniferous forests in the catchment; annual disintegration of the lake ice cover; and full mixis of the water column. Such conditions persisted, according to our age model, for ca. 27 ± 8 kyr between ca. 425–398 ka. The Lake El'gygytgyn record closely resembles the climate pattern recorded in Lake Baikal (SE Siberia) sediments and Antarctic ice cores, implying interhemispheric climate connectivity during MIS 11c.

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