publication . Article . 2018

Photochemical Mineralization of Terrigenous DOC to Dissolved Inorganic Carbon in Ocean

Aarnos, Hanna; Gélinas, Yves; Kasurinen, Ville; Gu, Yufei; Puupponen, Veli-Mikko; Vähätalo, Anssi;
Open Access English
  • Published: 01 Feb 2018
  • Publisher: American Geophysical Union
Abstract
When terrigenous dissolved organic carbon (tDOC) rich in chromophoric dissolved organic matter (tCDOM) enters the ocean, solar radiation mineralizes it partially into dissolved inorganic carbon (DIC). This study addresses the amount and the rates of DIC photoproduction from tDOC and the area of ocean required to photomineralize tDOC. We collected water samples from 10 major rivers, mixed them with artificial seawater, and irradiated them with simulated solar radiation to measure DIC photoproduction and the photobleaching of tCDOM. The linear relationship between DIC photoproduction and tCDOM photobleaching was used to estimate the amount of photoproduced DIC fro...
Subjects
free text keywords: rivers, WORLD RIVERS, joet, HUMIC LAKE, meret, valokemia, APPARENT QUANTUM YIELD, COASTAL OCEAN, hiili, CDOM, NATURAL ORGANIC-MATTER, AMAZON RIVER PLUME, ocean, photochemistry, carbon, liuennut orgaaninen hiili, MICROBIAL DECOMPOSITION, DOC, GLOBAL OCEAN, 1171 Geosciences, ATLANTIC BIGHT, 1172 Environmental sciences, LIGHT-ABSORPTION
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publication . Article . 2018

Photochemical Mineralization of Terrigenous DOC to Dissolved Inorganic Carbon in Ocean

Aarnos, Hanna; Gélinas, Yves; Kasurinen, Ville; Gu, Yufei; Puupponen, Veli-Mikko; Vähätalo, Anssi;