Articles | Volume 14, issue 15
https://doi.org/10.5194/bg-14-3615-2017
https://doi.org/10.5194/bg-14-3615-2017
Research article
 | 
01 Aug 2017
Research article |  | 01 Aug 2017

Physical control of interannual variations of the winter chlorophyll bloom in the northern Arabian Sea

Madhavan Girijakumari Keerthi, Matthieu Lengaigne, Marina Levy, Jerome Vialard, Vallivattathillam Parvathi, Clément de Boyer Montégut, Christian Ethé, Olivier Aumont, Iyyappan Suresh, Valiya Parambil Akhil, and Pillathu Moolayil Muraleedharan

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Cited articles

Akhil, V. P., Durand, F., Lengaigne, M., Vialard, J., Keerthi, M. G., Gopalakrishna, V. V., Deltel, C., Papa, F., and de Boyer Montégut, C.: A modelling study of the processes of surface salinity seasonal cycle in the Bay of Bengal, J. Geophys. Res., 116, 3926–3947, https://doi.org/10.1002/2013JC009632, 2014.
Akhil, V. P., Lengaigne, M., Vialard, J., Durand, F., Keerthi, M. G., Chaitanya, A. V. S., Papa, F., Gopalakrishna, V. V., and de Boyer Montégut, C.: A modeling study of processes controlling the Bay of Bengal sea surface salinity interannual variability, J. Geophys. Res.-Oceans, 121, 8471–8495, https://doi.org/10.1002/2016JC011662, 2016.
Aumont, O. and Bopp, L.: Globalizing results from ocean in-situ iron fertilization studies, Global Biogeochem. Cy., 20, GB2017, https://doi.org/10.1029/2005GB002591, 2006.
Aumont, O., Ethé, C., Tagliabue, A., Bopp, L., and Gehlen, M.: PISCES-v2: an ocean biogeochemical model for carbon and ecosystem studies, Geosci. Model Dev., 8, 2465–2513, https://doi.org/10.5194/gmd-8-2465-2015, 2015.
Aumont, O., Bopp, L., and Schulz, M.: “What does temporal variability in aeolian dust deposition contribute to sea-surface iron and chlorophyll distributions?”, Geophys. Res. Lett., 35, L07607, https://doi.org/10.1029/2007GL031131, 2008.
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Short summary
The northern Arabian Sea hosts a winter chlorophyll bloom, which exhibits strong interannual variability. The processes responsible for this interannual variation of the bloom are investigated using observations and a model. The interannual fluctuations of the winter bloom are largely related to the interannual mixed-layer depth (MLD) anomalies, which are driven by net heat flux anomalies. MLD controls the bloom amplitude through a modulation of nutrient turbulent fluxes into the mixed layer.
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