Pubblicazione scientifica

Controls on surface water carbonate chemistry along North American ocean margins

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità

RIASSUNTO

Syntheses of carbonate chemistry spatial patterns are important for predicting ocean acidification impacts, but are lacking in coastal oceans. Here, we show that along the North American Atlantic and Gulf coasts the meridional distributions of dissolved inorganic carbon (DIC) and carbonate mineral saturation state (Ω) are controlled by partial equilibrium with the atmosphere resulting in relatively low DIC and high Ω in warm southern waters and the opposite in cold northern waters. However, pH and the partial pressure of CO2 (pCO2) do not exhibit a simple spatial pattern and are controlled by local physical and net biological processes which impede equilibrium with the atmosphere. Along the Pacific coast, upwelling brings subsurface waters with low Ω and pH to the surface where net biological production works to raise their values. Different temperature sensitivities of carbonate properties and different timescales of influencing processes lead to contrasting property distributions within and among margins.

DATA

Data di pubblicazione: 01/06/2020

AUTORI

CAI WEI-JUN
XU YUAN-YUAN
FEELY RICHARD A
WANNINKHOF RIK
JONSSON BROR
ALIN SIMONE R
BARBERO LETICIA
CROSS JESSICA N
AZETSU-SCOTT KUMIKO
FASSBENDER ANDREA J
CARTER BRENDAN R
JIANG LI-QING
PEPIN PIERRE
CHEN BAOSHAN
HUSSAIN NAJID
REIMER JANET J
XUE LIANG
SALISBURY JOSEPH E
HERNANDEZ-AYON JOSE MARTIN
LANGDON CHRIS
LI QIAN
SUTTON ADRIENNE J
CHEN CHEN-TUNG A
GLEDHILL DWIGHT K

RIVISTA

Nature Communications, 11, 2691

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