Fig. 5: Cellular carbon export trends under low, medium and high emissions scenarios (RCPs 2.6, 4.5 and 8.5) from 2020 to 2099, relative to the regional mean for 2000–2019.

Note these trends also reflect relative changes in the absolute number of microbes exported. The right-hand panel depicts the mean and ± uncertainty in 2099 for the corresponding region. Note that there is no projection for the Greenland Ice Sheet under RCP 2.6. Solid lines indicate directly sampled regions, whilst dashed lines indicate extrapolated regions. Note that regions of equal colour are not connected in any fashion, the reuse of colour is a function of inherent colour palette limitations.