Climatological Distributions of pH, pCO2, Total CO2, Alkalinity, and CaCO3 Saturation in the Global Surface Ocean (NCEI Accession 0164568) ...

• Main Authors: Takahashi, Taro, Sutherland, Stewart C., Chipman, David W., Goddard, John G., Newberger, Timothy, Sweeney, Colm
• Format: Dataset
• Language: unknown
• Published: NOAA National Centers for Environmental Information 2017
• Subjects: Carbonic acid
• Online Access: https://dx.doi.org/10.3334/cdiac/otg.ndp094; https://www.ncei.noaa.gov/archive/accession/0164568

Climatological mean monthly distributions of pH in the total H+ scale, total CO2 concentration (TCO2), and the degree of CaCO3 saturation for the global surface ocean waters (excluding coastal areas) are calculated using a data set for pCO2, alkalinity and nutrient concentrations in surface waters (depths less than 50 m), which is built upon the GLODAP, CARINA and LDEO database. The mutual consistency among these measured parameters is demonstrated using the inorganic carbon chemistry model with the dissociation constants for carbonic acid by Lueker et al. (2000) and for boric acid by Dickson (1990). The global ocean is divided into 24 regions, and the linear potential alkalinity (total alkalinity + nitrate) versus salinity relationships are established for each region. The mean monthly distributions of pH and carbon chemistry parameters for the reference year 2005 are computed using the climatological mean monthly pCO2 data adjusted to a reference year 2005 and the alkalinity estimated from the potential ...