Marsh, Nichole L. J.; Poulton, Alex J; Mitchell, Catherine; Balch, William M; Marañón, Emilio; Crawford, David W; Álvarez, Marta; Blasco, D; Bowler, Bruce C; Cermeño, Pedro; Drapeau, Dave T; Feng, Yuanyuan; Fernández-Carrera, Ana; Fernández, Emilio; Fragoso, Glaucia M; Gonzalez, Natalia; Graziano, Lisa M; Holligan, Patrick, M.; Hopkins, Jason; Huete-Ortega, Maria; Humphreys, Matthew P; Hutchins, David A; Lam, Phoebe J; Lipsen, Michael S; Lopez-Sandoval, Daffne; Loucaides, Socratis; Marchetti, Adrian; Mayers, Kyle; Pelejero, Carles; Rees, Andrew; Sobrino, Cristina; Tynan, Eithne; Tyrrell, Toby; Vidal, Montserrat; Whitney, Frank; Daniels, Chris J (2025): Updated global compilation of coccolithophore calcification measurements from unperturbed water samples including ancillary data [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.987673

This database expands the Poulton et al., 2018 (doi:10.1594/PANGAEA.888182) database of pelagic calcium carbonate (CP) rate measurements from isotopic tracer uptake in incubated discrete water samples, as discussed in Daniels et al., 2018 (doi:10.5194/essd-10-1859-2018), and accompanies Marsh et al. (in prep.). The database now includes more CP (new data n = 400; complete database n = 3165), net primary production rate (PP) (new data n = 399; complete database n = 3150), total coccolithophore cell counts (new data n = 240; complete database n = 1512), and Emiliania huxleyi cell counts (new data n = 27; complete database n = 612). This expanded database maintains the record of data, including the principal investigator, expedition, OS region, doi reference (where available), collection date and year, sample ID, latitude, longitude, sampling and light depth, and method of measuring CP. We further expand the Poulton et al. (2018) data collection by including ancillary and environmental data, including: optical depth (OD, n = 3165), pHtotal (hereinafter referred to as pHT, n = 398), temperature (n = 1160), salinity (n = 1161), and the concentrations of chlorophyll a (n = 1363), NOx (NO3 or the sum of NO3 + NO2, n = 1161), silicic acid (Si(OH)4, n= 1156), phosphate (PO4, n = 1232), dissolved inorganic carbon (DIC, n = 318), total alkalinity (TA, n = 307), bicarbonate ion concentration (n = 349), and carbonate ion concentration (n = 352). All data was matched to CP, sample bottle identifiers (Niskin bottle numbers), and/or sampling depth values. This global database (81 °N - 64 °S, 132 °E - 174 °W) now covers expeditions and upper ocean measurements (0 - 193 m) from 1989 to 2024. Global in-situ geolocated data spanning time is valuable for modelling, satellite algorithms, and capturing calcium carbonate production in the global ocean. This expanded database, including the environmental, nutrient, chlorophyll a, and carbonate chemistry data, also allows for analysis of factors influencing calcium carbonate production on a global scale. This data amalgamation contributes to understanding the biogeochemistry of the oceans, global carbon cycle, and ocean acidification.