Fig. 3: Carbon–silica cycle model calibration.
From: Marine siliceous ecosystem decline led to sustained anomalous Early Triassic warmth
The modern-day values of (A) marine silica fluxes including biogenic silica (bSi) production, surface to deep export, deep to sediment export, sediment burial, and reverse weathering, B surface-dissolved silica levels, C preindustrial atmospheric CO2 levels and (D) surface-seawater pH are reproduced by our model. Parameters utilized include nsi = 0.2, ncarb = 0.1, \({{p}{{{{{{\rm{CO}}}}}}}}_{2}^{c}\) = 140, rsi = 3, rH = 1, and Alk:Si = 0.3. Vertical axis indicates frequency (normalized) of the Monte Carlo results.
