globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.epsl.2018.02.005
Scopus记录号: 2-s2.0-85044752165
论文题名:
Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago
作者: Lo L.; Belt S.T.; Lattaud J.; Friedrich T.; Zeeden C.; Schouten S.; Smik L.; Timmermann A.; Cabedo-Sanz P.; Huang J.-J.; Zhou L.; Ou T.-H.; Chang Y.-P.; Wang L.-C.; Chou Y.-M.; Shen C.-C.; Chen M.-T.; Wei K.-Y.; Song S.-R.; Fang T.-H.; Gorbarenko S.A.; Wang W.-L.; Lee T.-Q.; Elderfield H.; Hodell D.A.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 488
起始页码: 36
结束页码: 45
语种: 英语
英文关键词: greenhouse gases ; insolation ; Okhotsk Sea ; precession cycle ; sea ice
Scopus关键词: Atmospheric radiation ; Carbon dioxide ; Greenhouse gases ; Incident solar radiation ; Oceanography ; Orbits ; Submarine geology ; Surface waters ; Geochemical proxies ; Highly branched isoprenoid ; Internal oscillation ; Marine isotope stages ; Okhotsk sea ; Penultimate interglacial ; precession cycle ; Summer sea-surface temperatures ; Sea ice ; carbon dioxide ; computer simulation ; glacial-interglacial cycle ; greenhouse gas ; Holocene ; interglacial ; numerical model ; paleoatmosphere ; paleoclimate ; proxy climate record ; sea ice ; sea surface temperature ; sediment core ; Pacific Ocean ; Sea of Okhotsk
英文摘要: 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 MIS 2–4, consistent with intervals of relatively high and low SSST, respectively. Our data also show that the sea ice extent was governed by precession-dominated insolation changes during intervals of atmospheric CO2 concentrations ranging from 190 to 260 ppm. However, the proxy record and the model simulation data show that the central Okhotsk Sea was near ice-free regardless of insolation forcing throughout the penultimate interglacial, and during the Holocene, when atmospheric CO2 was above ∼260 ppm. Past sea ice conditions in the central Okhotsk Sea were therefore strongly modulated by both orbital-driven insolation and CO2-induced radiative forcing during the past glacial/interglacial cycle. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109989
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom; Biogeochemical Research Centre, School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth, PL4 8AA, United Kingdom; NIOZ, Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, Utrecht University, PO Box 59, Den Burg, AB 1790, Netherlands; International Pacific Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Monoa, Honolulu, HI 96822, United States; IMCCE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Lille, Paris, 75014, France; Faculty of Geosciences, Department of Earth Sciences, Utrecht University, PO Box 80.021TA 3508, Netherlands; Institute for Basic Science, Center for Climate Physics, Pusan National University, Busan, 46241, South Korea; Department of Geosciences, National Taiwan University, Taipei, 10617, Taiwan; Laboratory for Earth Surface Processes, Department of Geography, Institute of Ocean Research, Peking University, Beijing, 100871, China; Institute of Applied Mechanics, National Taiwan University, Taipei, 10617, Taiwan; Department of Oceanography, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan; Department of Earth and Environment Sciences, National Chung Cheng University, Chiayi, 62102, Taiwan; Department of Ocean Science and Engineering, Southern University of Science and Technology, Gongdong, Shenzhen, 518055, China; Institute of Applied Geosciences, National Taiwan Ocean University, Keelung, 20224, Taiwan; V.I. Il'ichev Pacific Oceanological Institute, Far East Branch Russian Academy of Science, Vladivostok, 690041, Russian Federation; Department of Biology, National Changhua University of Education, Changhua, 50074, Taiwan; Institute of Earth Sciences, Academia Sinica, Taipei, 11529, Taiwan; Institute of Geology, University of Innsbruck, Innrain 52, Innsbruck, A-6020, Austria

Recommended Citation:
Lo L.,Belt S.T.,Lattaud J.,et al. Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago[J]. Earth and Planetary Science Letters,2018-01-01,488
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