Interannual Variability of Equatorial Paci c CO 2 Fluxes Estimated from Temperature and Salinity Data
نویسندگان
چکیده
Based on atmospheric data and models, the tropical CO2 source anomaly reaches up to 2 GtC yr , but the respective contributions of the terrestrial biosphere and the oceans to this ux are di cult to quantify. Here we present a new method for estimating CO2 uxes from oceanic observations based on the surprisingly good predictive skill of temperature and salinity for surface dissolved inorganic carbon. Using historical temperature and salinity data, we reconstruct the basin scale CO2 ux to the atmosphere in the equatorial Paci c from 1982 to 1993. We nd that interannual anomalies do not exceed 0.4 0.2 GtC yr 1 which suggests that up to 80% of the tropical CO2 source anomaly is due to the terrestrial biosphere.
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