Articles | Volume 16, issue 5
Ocean Sci., 16, 1285–1296, 2020
Ocean Sci., 16, 1285–1296, 2020

Research article 29 Oct 2020

Research article | 29 Oct 2020

Seasonal and interannual variabilities of the barrier layer thickness in the tropical Indian Ocean

Xu Yuan et al.

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Cited articles

Agarwal, N., Sharma, R., Parekh, A., Basu, S., Sarkar, A., and Agarwal, V. K.: Argo observations of barrier layer in the tropical Indian Ocean, Adv. Space Res., 50, 642–654, 2012. 
Alexander, M. A., Bladé, I., Newman, M., Lanzante, J. R., Lau, N.-C., and Scott, J. D.: The atmospheric bridge: The influence of ENSO teleconnections on air–sea interaction over the global oceans, J. Climate, 15, 2205–2231, 2002. 
APDRC – Asia-Pacific Data Research Center of the IPRC: Argo, SODA and CMAP, available at:, last access: August 2020. 
Bosc, C., Delcroix, T., and Maes, C.: Barrier layer variability in the western Pacific warm pool from 2000 to 2007, J. Geophys. Res.-Oceans, 114, C06023,, 2009. 
Carton, J. A. and Giese, B. S.: A reanalysis of ocean climate using Simple Ocean Data Assimilation (SODA), Mon. Weather Rev., 136, 2999–3017, 2008. 
Short summary
This work investigates the variabilities of the barrier layer thickness (BLT) in the tropical Indian Ocean with the Simple Ocean Data Assimilation version 3 ocean reanalysis data. Our results show that the seasonal variation of the BLT is in relation to the changes of thermocline and sea surface salinity. In terms of the interannual timescale, BLT presents a clear seasonal phase locking dominated by different drivers during the Indian Dipole and El Niño–Southern Oscillation events.