Methane and CO2 during the Holocene

Raynaud D et al.

, 2000

Modified from Raynaud D et al. (2000) Quaternary Science Reviews 19: 9-17

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Caption: Holocene ice records of greenhouse trace gases: (a) Records of atmospheric CH4 in Greenland and Antarctica (Chappellaz et al., 1997). Note the significant variability in the interpolar methane gradient. (b) Results of a 3-box model translating the measured gradients into contributions in CH4 sources in three latitudinal bands (Chappellaz et al., 1997); (c) and (d) Records of atmospheric CO2 and its isotopic (δ13C) composition measured along the antarctic Taylor Dome ice core (Indermühle et al., 1999); (e) and (f) Ocean uptake (in GtC/yr) and cumulative biospheric release of carbon (in GtC) responsible for the observed CO2 changes, as deduced from inverse methods based on a one-dimensional carbon cycle model (Indermühle et al., 1999).

 

Raynaud D et al. (2000) Quaternary Science Reviews 19: 9-17

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