Abstract
The focus of this review article is on the anthropogenic CO 2 taken up by the ocean. There are several methods of identifying the anthropogenic CO 2 signal and quantifying its inventory in the ocean. The ?C* method is most frequently used to estimate the global distribution of anthropogenic CO 2 in the ocean. Results based on analysis of the dataset obtained from the comprehensive surveys of inorganic carbon distribution in the world oceans in the 1990s are given. These surveys were jointly conducted during the World Ocean Circulation Experiment (WOCE) and the Joint Global Ocean Flux Study (JGOFS). This data set consists of 9618 hydrographic stations from a total of 95 cruises, which represents the most accurate and comprehensive view of the distribution of inorganic carbon in the global ocean available today. The increase of anthropogenic CO2 in the ocean during the past few decades is also evaluated using direct comparison of results from repeat surveys and using statistical method of Multi-parameter Linear Regression (MLR). The impact of increasing oceanic anthropogenic CO 2 on the calcium carbonate system in the ocean is reviewed briefly as well. Extensive studies of CaCO 3 dissolution as a result of increasing anthropogenic CO 2 in the ocean have revealed several distinct oceanic regions where the CaCO 3 undersaturation zone has expanded.
Highlights
The atmospheric CO2 concentration is considered as one of the key factors affecting the climate change because of its greenhouse warming effect
This data set consists of 9618 hydrographic stations from a total of 95 cruises, which represents the most accurate and comprehensive view of the distribution of inorganic carbon in the global ocean available today
Extensive studies of CaCO3 dissolution as a result of increasing anthropogenic CO2 in the ocean have revealed several distinct oceanic regions where the CaCO3 undersaturation zone has expanded
Summary
PROMOTING MARINE SCIENCE: CONTRIBUTIONS TO CELEBRATE THE 50TH ANNIVERSARY OF SCIENTIA MARINA. Results based on analysis of the dataset obtained from the comprehensive surveys of inorganic carbon distribution in the world oceans in the 1990s are given. These surveys were jointly conducted during the World Ocean Circulation Experiment (WOCE) and the Joint Global Ocean Flux. This data set consists of 9618 hydrographic stations from a total of 95 cruises, which represents the most accurate and comprehensive view of the distribution of inorganic carbon in the global ocean available today. El método de ∆C* es el que se utiliza mas frecuentemente para estimar la distribución global del CO2 antropogénico en el océano. Palabras clave: carbono antropogénico, distribución en el océano, impacto químico
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