Global analysis of the controls on seawater  dimethylsulfide spatial variability

Manville, George; Bell, Thomas G.; Mulcahy, Jane P.; Simó, Rafel; Galí, Martí; Mahajan, Anoop S.; Hulswar, Shrivardhan; Halloran, Paul R.

doi:https://doi.org/10.5194/bg-20-1813-2023

Articles | Volume 20, issue 9

https://doi.org/10.5194/bg-20-1813-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-1813-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 9

Research article

|

16 May 2023

Research article |

| 16 May 2023

Global analysis of the controls on seawater dimethylsulfide spatial variability

George Manville, Thomas G. Bell, Jane P. Mulcahy, Rafel Simó, Martí Galí, Anoop S. Mahajan, Shrivardhan Hulswar, and Paul R. Halloran

Supplement

https://doi.org/10.5194/bg-20-1813-2023-supplement

Data sets

North Atlantic Aerosol and Marine Ecosystem Study (NAAMES) 2015-2018 M. Behrenfeld, K. Bidle, E. Boss, C. Carlson, P. Gaube, S. Giovannoni, J. Graff, K. Halsey, S. Kramer, S. Menden-Deuer, N. Nelson, E. Saltzman, D. Siegel, and T. Westberry https://doi.org/10.5067/SeaBASS/NAAMES/DATA001

Moderate-resolution Imaging Spectroradiometer (MODIS) Aqua Chlorophyll Data NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Ocean Biology Processing Group https://doi.org/10.5067/AQUA/MODIS/L3M/CHL/2018

SEA_SURFACE_HEIGHT_ALT_GRIDS_L4_2SATS_5DAY_6THDEG_V_JPL1609. Ver. 1812 V. Zlotnicki, Z. Qu, and J. Willis https://doi.org/10.5067/SLREF-CDRV2

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Short summary

We present the first global investigation of controls on seawater dimethylsulfide (DMS) spatial variability over scales of up to 100 km. Sea surface height anomalies, density, and chlorophyll a help explain almost 80 % of DMS variability. The results suggest that physical and biogeochemical processes play an equally important role in controlling DMS variability. These data provide independent confirmation that existing parameterisations of seawater DMS concentration use appropriate variables.