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Understanding the Lagged Role of CO2 in Climate Change Dynamics

Explore the intricate relationship between CO2 levels and temperature changes, uncovering a lag time of 800 years and the Southern Ocean's influence on CO2 control. Discover potential factors like ocean mixing, sea-ice cover, and biological mechanisms.

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Understanding the Lagged Role of CO2 in Climate Change Dynamics

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  1. 2010/07/22 Pei-Yu Chueh

  2. CO2’s role Lagged 800~1000yrs behind temperature. (Monnin et al. , 2001; Caillon et al. , 2003) CO2 plays a key role in amplifying the initial orbital forcing? (Stott et al. , 2003) CO2 may be controlled in large part by the climate of the southern ocean. (Stott et al. , 2003; Monnin et al. , 2001) Possible explanation: change in the vertical ocean mixing or sea-ice cover changes, or a biological mechanism, such as atmospheric dust flux and ocean productivity. (Toggweiler et al. , 2006; Martin et al. , 1990; Broecker et al. , 1998; Stephens et al. , 2000) A CO2–climate lag time of 800 years is consistent with the mixing time of the deep ocean. (Stott et al. , 2003)

  3. Orbital forcing

  4. Berger et al. , 1978 Milankovitch et al. , 1941 Henry’s law linear Bintanja et al. , 2008 Lisiecki et al. , 2005

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