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ToolsJickells, T. D., Liss, P. S., Broadgate, W., Turner, S., Kettle, A. J., Read, J, Baker, J., Cardenas, L. M., Carse, F., Hamren-Larssen, M., Spokes, L., Steinke, M., Thompson, A., Watson, A., Archer, S. D., Bellerby, R. G. J., Law, C. S., Nightingale, P. D., Liddicoat, M. I., Widdicombe, C. E., Bowie, A., Gilpin, L. C., Moncoiffe, G., Savidge, G., Preston, T., Hadziabdic, P., Frost, T., Upstill-Goddard, R., Pedros-Alio, C., Simo, R., Jackson, A, Allen, A. and DeGrandpre, M. D. (2008) A Lagrangian biogeochemical study of an eddy in the Northeast Atlantic. Progress in Oceanography, 76 (3). pp. 366-398.
Full text not available from this repository. (Request a copy)Abstract
We report the results of an experiment in the Northeast Atlantic in which sulphur hexafluoride (SF6) was released within an eddy and the behaviour of trace gases, nutrients and productivity followed within a Lagrangian framework over a period of 24 days. Measurements were also made in the air above the eddy in order to estimate air–sea exchange rates for some components. The physical, biological and biogeochemical properties of the eddy resemble those of other eddies studied in this area, suggesting that the results we report may be applicable beyond the specific eddy studied. During a period of low wind speed at the start of the experiment, we are able to quantitatively describe and balance the nutrient and carbon budgets for the eddy. We also report concentrations of various trace gases in the region which are similar to those observed in other studies and we estimate exchange rates for several trace gases. We show that the importance of gas exchange over other loss terms varies with time and also varies for the different gases. We show that the various trace gases considered (CO2, dimethyl sulphide (DMS), N2O, CH4, non-methane-hydrocarbons, methyl bromide, methyl iodide and volatile selenium species) are all influenced by physical and biological processes, but the overall distribution and temporal variability of individual gases are different to one another. A storm disrupted the stratification in the eddy during the experiment, resulting in enhanced nutrient supply to surface waters, enhanced gas exchange rates and a change in plankton community, which we quantify, although overall productivity was little changed. Emphasis is placed on the regularity of storms in the temperate ocean and the importance of these stochastic processes in such systems.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Climatic Research Unit |
| Related URLs: | |
| Depositing User: | Rosie Cullington |
| Date Deposited: | 25 Feb 2011 12:01 |
| Last Modified: | 24 Sep 2024 09:32 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/24858 |
| DOI: | 10.1016/j.pocean.2008.01.006 |
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