Proxy and simulation data for marine sediment core MD01-2414 from the central Okhotsk Sea ...

• Main Authors: Lo, Li, Belt, Simon T, Lattaud, Julie, Friedrich, Tobias, Zeeden, Christian, Schouten, Stefan, Smik, Lukas, Timmermann, Axel, Cabedo-Sanz, Patricia, Huang, Jyh-Jaan, Zhou, Liping, Ou, Tsong-Hua, Chang, Yuan-Pin, Wang, Liang-Chi, Chou, Yu-Min, Shen, Chuan-Chou, Chen, Min-Te, Wei, Kuo-Yen, Song, Sheng-Rong, Fang, Tien-Hsi, Gorbarenko, Sergey A, Wang, Wei-Lung, Lee, Teh-Quei, Elderfield, Henry, Hodell, David A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2018
• Subjects: Giant piston corer; MD122; Marion Dufresne 1995; okhotsk sea; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.886808; https://doi.pangaea.de/10.1594/PANGAEA.886808

Recent reduction in high-latitude sea ice extent demonstrates that sea ice is highly sensitive to external and internal radiative forcings. In order to better understand sea ice system responses to external orbital forcing and internal oscillations on orbital timescales, here we reconstruct changes in sea ice extent and summer sea surface temperature (SSST) over the past 130,000 yrs in the central Okhotsk Sea. We applied novel organic geochemical proxies of sea ice (IP25), SSST (TEXL86) and open water marine productivity (a tri-unsaturated highly branched isoprenoid and biogenic opal) to marine sediment core MD01-2414 (53°11.77'N, 149°34.80'E, water depth 1123 m). To complement the proxy data, we also carried out transient Earth system model simulations and sensitivity tests to identify contributions of different climatic forcing factors. Our results show that the central Okhotsk Sea was ice-free during Marine Isotope Stage (MIS) 5e and the early-mid Holocene, but experienced variable sea ice cover during ... : Supplement to: Lo, Li; Belt, Simon T; Lattaud, Julie; Friedrich, Tobias; Zeeden, Christian; Schouten, Stefan; Smik, Lukas; Timmermann, Axel; Cabedo-Sanz, Patricia; Huang, Jyh-Jaan; Zhou, Liping; Ou, Tsong-Hua; Chang, Yuan-Pin; Wang, Liang-Chi; Chou, Yu-Min; Shen, Chuan-Chou; Chen, Min-Te; Wei, Kuo-Yen; Song, Sheng-Rong; Fang, Tien-Hsi; Gorbarenko, Sergey A; Wang, Wei-Lung; Lee, Teh-Quei; Elderfield, Henry; Hodell, David A (2018): Precession and atmospheric CO 2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago. Earth and Planetary Science Letters, 488, 36-45 ...