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High-resolution time-depth view of dimethylsulphide cycling in the surface sea

Royer, SJ and Galí, M and Mahajan, AS and Ross, ON and Pérez, GL and Saltzman, ES and Simó, R (2016) High-resolution time-depth view of dimethylsulphide cycling in the surface sea. Scientific Reports, 6. pp. 1-13.

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Emission of the trace gas dimethylsulphide (DMS) from the ocean influences the chemical and optical properties of the atmosphere, and the olfactory landscape for foraging marine birds, turtles and mammals. DMS concentration has been seen to vary across seasons and latitudes with plankton taxonomy and activity, and following the seascape of ocean’s physics. However, whether and how does it vary at the time scales of meteorology and day-night cycles is largely unknown. Here we used high-resolution measurements over time and depth within coherent water patches in the open sea to show that DMS concentration responded rapidly but resiliently to mesoscale meteorological perturbation. Further, it varied over diel cycles in conjunction with rhythmic photobiological indicators in phytoplankton. Combining data and modelling, we show that sunlight switches and tunes the balance between net biological production and abiotic losses. This is an outstanding example of how biological diel rhythms affect biogeochemical processes.

Item Type: Article
Additional Information: Copyright of this article belongs to Macmillan Publishers Limited
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 24 Dec 2016 14:09
Last Modified: 24 Dec 2016 14:09

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