Advances in Earth Science ›› 2019, Vol. 34 ›› Issue (3): 265-274. doi: 10.11867/j.issn.1001-8166.2019.03.0265

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The Application of Alkenone-Based pCO 2 Reconstructions

Xiaoxu Ma( ),Chuanlian Liu( ),Xiaobo Jin,Hongrui Zhang,Ruigang Ma   

  1. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
  • Received:2018-12-21 Revised:2019-02-16 Online:2019-03-10 Published:2019-04-28
  • Contact: Chuanlian Liu;
  • About author: Ma Xiaoxu (1994-), female, Zibo City, Shandong Province, Master student. Research areas include paleoceanography. E-mail: | Ma Xiaoxu (1994-), female, Zibo City, Shandong Province, Master student. Research areas include paleoceanography. E-mail: |Liu Chuanlian(1963-), male, Jining City, Shandong Province, Professor. Research areas include marine micropaleontology and paleoceanography. E-mail:
  • Supported by:
    Project supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China “Study on the relationship between the palaeoceanography and the hydrocarbon source rocks in the deep water of the South China Sea” (No. 2016ZX05026007-03)Fundation: and the National Nature Science Foundation of China “Calibrating the b value in alkenone-based CO2 paleo-barometer by using coccolithophore physiology”(No. 41806050)

Xiaoxu Ma,Chuanlian Liu,Xiaobo Jin,Hongrui Zhang,Ruigang Ma. The Application of Alkenone-Based pCO 2 Reconstructions[J]. Advances in Earth Science, 2019, 34(3): 265-274.

The changing of atmospheric carbon dioxide concentration is closely related with the changing of global ice sheet,temperature and sea level. Knowledge of the past atmospheric carbon dioxide concentration and its relationship with climate is an important method of predicting the future climate change. Coccolith derived long-chain alkenone carbon isotope is one of the important proxies to reconstruct past carbon dioxide, which is wildly applied in the reconstruction of the Cenozoic atmospheric carbon dioxide. In this paper, we focused on the method of alkenone-based atmospheric carbon dioxide concentration, including the geochemical properties of long-chain alkenone, carbon diffusive model and the carbon isotope fraction. Then, we introduced the development of alkenone-based carbon dioxide proxy and its uncertainty. Coccolith cell geometry and growth rate have great influence on carbon dioxide fraction. Besides, there are some uncertainties about carbon concentration mechanisms in coccolithes, which may have some influence on alkenone-based carbon dioxide method to reconstruct ancient carbon dioxide more accurately. At the end, we summarized the Cenozoic carbon dioxide record with various proxies including alkenone carbon dioxide, boron isotope, palaeosol carbonate nodules and stomatal indices of fossil leaves.

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