Table 2 The Baltic Sea sub-basins used to derive CO2 uptake rates from the atmosphere. Salinity, temperature, and TA data were taken from the BALTSEM model (see Methods)
From: Seafloor alkalinity enhancement as a carbon dioxide removal strategy in the Baltic Sea
Sub-basin | Area (km2) | Mud (km2) | Mean depth (m) | Mean S (-) | Mean T (oC) | TA (µmol kg−1) | pH | O2 (µmol kg−1) | CaCO3 added (Mt yr−1) | CO2 uptake (Mt yr−1) | CaCO3:CO2 (t t−1) |
|---|---|---|---|---|---|---|---|---|---|---|---|
Kattegat (Katt) | 22249 | 8500 | 24 | 26.4 | 7.7 | 2049 | 8.01 | 314 | 4.0 | 0.044 | 89.5 |
Danish Straits (DS) | 19331 | 2300 | 15 | 16.6 | 7.4 | 1806 | 8.00 | 337 | 1.1 | 0.022 | 49.5 |
Baltic Proper (BP) | 227568 | 74300 | 61 | 7.9 | 4.7 | 1576 | 7.90 | 378 | 34.7 | 1.524 | 22.7 |
Bothnian Sea (BS) | 67001 | 8800 | 64 | 5.3 | 3.4 | 1261 | 7.90 | 401 | 4.1 | 0.341 | 12.0 |
Bothnian Bay (BB) | 36559 | 13300 | 40 | 3.2 | 3.2 | 862 | 7.74 | 410 | 6.2 | 0.935 | 6.6 |
Gulf of Riga (GoR) | 17509 | 8700 | 24 | 5.6 | 5.2 | 1884 | 8.07 | 383 | 4.1 | 0.120 | 33.7 |
Gulf of Finland (GoF) | 23729 | 8800 | 33 | 5.7 | 4.5 | 1435 | 7.96 | 389 | 4.1 | 0.239 | 17.2 |
Total | 58.2 | 3.23 |
