High atmosphere-ocean exchange of organic carbon in the NE subtropical Atlantic

Jordi Dachs*, Maria de Lluch Calleja Cortes, Carlos Duarte, Sabino del Vento, Barbara Turpin, Andrea Polidori, Gerhard J. Herndl, Susana Agusti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

The air-sea exchange of organic carbon (OC) remains largely unexplored, except for few organic compounds comprising a small fraction of the total aerosol and gaseous OC in the atmosphere. Observations of high atmospheric concentrations and diffusive air-sea exchanges for such individual organic compounds, suggest that air-sea exchange of total OC may contribute significantly to the oceanic carbon budget. Here we quantify the atmosphere-ocean exchanges of total OC in the NE Subtropical Atlantic. Average net gaseous diffusive air-water fluxes averaged -31 and -25 mmol C m-2 d-1 for the spring and fall, respectively, exceeding measured OC inputs by dry aerosol deposition (FDDOC, -0.98 mmol C m-2 d-1) and net CO2 exchange (FCO2, -6.3 mmol C m-2 d-1). These fluxes are important to understand the regional carbon budget of the NE Subtropical Atlantic, and depict the atmosphere as a major dynamic vector for OC exchange with the ocean.

Original languageEnglish (US)
Article numberL21807
Pages (from-to)1-4
Number of pages4
JournalGeophysical Research Letters
Volume32
Issue number21
DOIs
StatePublished - Nov 16 2005

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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