Organic Matter

Arctic rivers are discharging organic matter enriched in mercury to the Labrador Sea

In the framework of GEOVIDE-GEOTRACES GA01 cruise (spring 2014), Cossa and co-workers (see reference below) measured the first high-resolution mercury (Hg) distribution pattern along a transect from Greenland to Labrador coasts. An interesting feature is the observation of Hg enrichment originating from fluvial sources in the Canadian Arctic Archipelago waters. This excess Hg is transferred […]

Apr / 09 / 2018

The sources of the water soluble organic matter contained in the aerosols over the Atlantic ocean decoded

Organic matter is an important component of aerosols, which can absorb (or scatter) light, contributing a warming (or cooling) effect to the atmospheric radiative budget. However, this impact is tightly linked to the molecular characteristics of aerosol organic matter. It is, therefore, of prime importance to establish the organic matter molecular details of aerosols from […]

Nov / 07 / 2014

Sinking organic matter: a major driver of the oceanic zinc cycle?

Zinc (Zn) is a marine micronutrient, important for phytoplankton and involved in biogeochemical cycling throughout the oceans. Despite the importance of this element, the processes that control the oceanic Zn cycle are still poorly understood. As with other trace elements, this lack of knowledge is being addressed by high-resolution sampling as part of the GEOTRACES […]

Apr / 17 / 2014

Results from the first US-GEOTRACES cruise in the North Atlantic

Results from the first US-GEOTRACES cruise in the North Atlantic are coming out! Andrew Wozniak and co-authors show that aerosols from European-influenced air masses (combustion influenced) have higher relative iron (Fe) and aluminium (Al) solubilities, higher Water Soluble Organic Carbon (WSOC)/trace metal ratios, and distinct organic matter (OM) chemical characteristics compared to those from North African-influenced […]

Oct / 28 / 2013

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