Fig. 2: Mean pCO2 from SOM-FFN reconstructions. | Communications Earth & Environment

Fig. 2: Mean pCO2 from SOM-FFN reconstructions.

From: Improved winter data coverage of the Southern Ocean CO2 sink from extrapolation of summertime observations

Fig. 2

a 1993-2018 mean seasonal cycle and b annual mean surface pCO2 (in micro-atmosphere, µ atm) south of the Antarctic Polar Front from the SOM-FFN with and without pseudo observations in the training data (solid lines). Each line represents an ensemble mean, and the shaded areas are the 1-σ uncertainties (see Methods section). The black dashed line shows the annual mean atmospheric pCO2 above the same ocean area, calculated from the NOAA ESRL product50,51.

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