Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago

Li Lo, Simon T. Belt, Julie Lattaud, Tobias Friedrich, Christian Zeeden, Stefan Schouten, Lukas Smik, Axel Timmermann, Patricia Cabedo-Sanz, Jyh Jaan Huang, Liping Zhou, Tsong Hua Ou, Yuan Pin Chang, Liang Chi Wang, Yu Min Chou, Chuan Chou Shen, Min Te Chen, Kuo Yen Wei, Sheng Rong Song, Tien Hsi FangSergey A. Gorbarenko, Wei Lung Wang, Teh Quei Lee, Henry Elderfield, David A. Hodell

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)36-45
Number of pages10
JournalEarth and Planetary Science Letters
Volume488
DOIs
Publication statusPublished - 2018 Apr 15

Fingerprint

Sea ice
sea ice
precession
insolation
Incident solar radiation
sea surface temperature
summer
radiative forcing
marine isotope stage
Isotopes
orbitals
isotopes
Holocene
intervals
sea
orbital forcing
glacial-interglacial cycle
Water
water depth
isoprenoid

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

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. / Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago. In: Earth and Planetary Science Letters. 2018 ; Vol. 488. pp. 36-45.
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abstract = "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.",
author = "Li Lo and Belt, {Simon T.} and Julie Lattaud and Tobias Friedrich and Christian Zeeden and Stefan Schouten and Lukas Smik and Axel Timmermann and Patricia Cabedo-Sanz and Huang, {Jyh Jaan} and Liping Zhou and Ou, {Tsong Hua} and Chang, {Yuan Pin} and Wang, {Liang Chi} and Chou, {Yu Min} and Shen, {Chuan Chou} and Chen, {Min Te} and Wei, {Kuo Yen} and Song, {Sheng Rong} and Fang, {Tien Hsi} and Gorbarenko, {Sergey A.} and Wang, {Wei Lung} and Lee, {Teh Quei} and Henry Elderfield and Hodell, {David A.}",
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Lo, L, Belt, ST, Lattaud, J, Friedrich, T, Zeeden, C, Schouten, S, Smik, L, Timmermann, A, Cabedo-Sanz, P, Huang, JJ, Zhou, L, Ou, TH, Chang, YP, Wang, LC, Chou, YM, Shen, CC, Chen, MT, Wei, KY, Song, SR, Fang, TH, Gorbarenko, SA, Wang, WL, Lee, TQ, Elderfield, H & Hodell, DA 2018, 'Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago', Earth and Planetary Science Letters, vol. 488, pp. 36-45. https://doi.org/10.1016/j.epsl.2018.02.005

Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago. / 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.

In: Earth and Planetary Science Letters, Vol. 488, 15.04.2018, p. 36-45.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Precession and atmospheric CO2 modulated variability of sea ice in the central Okhotsk Sea since 130,000 years ago

AU - Lo, Li

AU - Belt, Simon T.

AU - Lattaud, Julie

AU - Friedrich, Tobias

AU - Zeeden, Christian

AU - Schouten, Stefan

AU - Smik, Lukas

AU - Timmermann, Axel

AU - Cabedo-Sanz, Patricia

AU - Huang, Jyh Jaan

AU - Zhou, Liping

AU - Ou, Tsong Hua

AU - Chang, Yuan Pin

AU - Wang, Liang Chi

AU - Chou, Yu Min

AU - Shen, Chuan Chou

AU - Chen, Min Te

AU - Wei, Kuo Yen

AU - Song, Sheng Rong

AU - Fang, Tien Hsi

AU - Gorbarenko, Sergey A.

AU - Wang, Wei Lung

AU - Lee, Teh Quei

AU - Elderfield, Henry

AU - Hodell, David A.

PY - 2018/4/15

Y1 - 2018/4/15

N2 - 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.

AB - 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.

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