Extended Data Fig. 4: Effective concentration (C*) and removal (percentage) of TA and Ca2+ in the Chesapeake Bay in August 2016.
From: Chesapeake Bay acidification buffered by spatially decoupled carbonate mineral cycling
The fitting equation for TA (a) at salinity < =22 is C = 0.00002708×S6-0.00336738×S5+0.17376067×S4-4.6574875×S3+64.65219917×S2-344.24526458×S+1342.095396, whereas at salinity >22 the equation is C = 31.791176×S +1172.4787872. The fitting equation for Ca2+ (b) at salinity < =22 is C = -0.00001835×S6+0.00171504×S5-0.05591518×S4+0.67310609×S3-0.73633157×S2+265.9022229×S+368.4115086, while at salinity >22 the equation is C = 270.483366×S +740.833973. C* can be acquired by extending the derivative at any salinity to zero salinity in a concentration-salinity plot. The removal percentage at any salinity relative to freshwater input can be calculated via removal (%) = (C0-C*)/C0×100, where C0 means the concentration at freshwater end.
