Table 1 The table shows the detailed characteristics of the employed Carbon Dioxide Removal (CDR) scenarios featuring Afforestation/Reforestation (AR) and Ocean Alkalinity Enhancement (OAE) and how linear expectations are formulated
From: No compromise in efficiency from the co-application of a marine and a terrestrial CDR method
Scenario | AR by 2099 (Mha) | Alkalinity by 2099 (Pmol) | Assess linearity compared to: | Removal Efficiency (%) | \(\frac{{{{{\boldsymbol{C}}}}}_{{{{\boldsymbol{land}}}}}{{{\boldsymbol{uptake}}}}\,\left({{{{\boldsymbol{GtCO}}}}}_{{{{\boldsymbol{2}}}}}\right)}{{{{\boldsymbol{100}}}}\, {{{\boldsymbol{Mha}}}}}\) | \(\frac{{{{{\boldsymbol{C}}}}}_{{{{\boldsymbol{ocean}}}}}{{{\boldsymbol{uptake}}}}\,\left({{{{\boldsymbol{GtCO}}}}}_{{{{\boldsymbol{2}}}}}\right)}{{{{\boldsymbol{Pmol}}}}}\) |
|---|---|---|---|---|---|---|
REF | – | – | – | – | – | – |
halfAR | 463.5 | – | – | \(\frac{{\varDelta C}_{{atmo}}^{{halfAR}-{REF}}}{{\varDelta C}_{{land}}^{{halfAR}-{REF}}}\) | \(\frac{{\varDelta C}_{{land}}^{{halfAR}-{REF}}}{{Mha}/100}\) | – |
AR | 927 | – | 2 * halfAR | \(\frac{{\varDelta C}_{{atmo}}^{{AR}-{REF}}}{{\varDelta C}_{{land}}^{{AR}-{REF}}}\) | \(\frac{{\varDelta C}_{{land}}^{{AR}-{REF}}}{{Mha}/100}\) | – |
halfOAE | – | 8 | – | \(\frac{{\varDelta C}_{{atmo}}^{{halfOAE}-{REF}}}{{\varDelta C}_{{ocean}}^{{halfOAE}-{REF}}}\) | – | \(\frac{{\varDelta C}_{{ocean}}^{{halfOAE}-{REF}}}{{Pmol}}\) |
OAE | – | 16 | 2 * halfOAE | \(\frac{{\varDelta C}_{{atmo}}^{{OAE}-{REF}}}{{\varDelta C}_{{ocean}}^{{OAE}-{REF}}}\) | – | \(\frac{{\varDelta C}_{{ocean}}^{{OAE}-{REF}}}{{Pmol}}\) |
halfMixed | 463.5 | 8 | halfAR + halfOAE | – | \(\frac{{\varDelta C}_{{land}}^{{halfMixed}-{REF}}}{{Mha}/100}\) | \(\frac{{\varDelta C}_{{ocean}}^{{halfMixed}-{REF}}}{{Pmol}}\) |
Mixed | 927 | 16 | (1) 2 * halfMixed (2) AR + OAE | – | \(\frac{{\varDelta C}_{{land}}^{{Mixed}-{REF}}}{{Mha}/100}\) | \(\frac{{\varDelta C}_{{ocean}}^{{Mixed}-{REF}}}{{Pmol}}\) |
