Fig. 4: Mapped CO2 flux trends. | Communications Earth & Environment

Fig. 4: Mapped CO2 flux trends.

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

Fig. 4

Colours show air–sea CO2 flux trends (negative is increasing uptake) and arrows show wind trends, for the 2004–2011 period (top row) and 2011–2018 period (bottom row). Values are moles of carbon per metre squared per year per decade (mol C m−2 yr−1 decade−1). Panels a and d show CO2 flux trends when pseudo observations are not used, panels b and e show the trends when the pseudo observations are included, and panels c and f show the difference in CO2 flux trends due to the pseudo observations (note the different colour scale for the difference plots). The solid green line on all panels shows the latitude of the 2004–2018 mean zonal wind maximum based on CCMP winds46, and the black dashed lines mark ocean basin boundaries.

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