Ramanantsoa, JDPenven, PKrug, Marjolaine JGula, JRouault, M2018-08-022018-08-022018-02Ramanantsoa, J.D. et al. 2018. Uncovering a new current: The Southwest MAdagascar coastal current. Geophysical Research Letters, vol. 45(4): 1930-19380094-82761944-8007https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2017GL075900https://doi.org/10.1002/2017GL075900http://hdl.handle.net/10204/10342© 2018 American Geophysical UnionCruise data sets, satellite remote sensing observations, and model data analyses are combined to highlight the existence of a coastal surface poleward flow in the southwest of Madagascar: the Southwest MAdagascar Coastal Current (SMACC). The SMACC is a relatively shallow (<300 m) and narrow (<100 km wide) warm and salty coastal surface current, which flows along the south western coast of Madagascar toward the south, opposite to the dominant winds. The warm water surface signature of the SMACC extends from 22°S (upstream) to 26.4°S (downstream). The SMACC exhibits a seasonal variability: more intense in summer and reduced in winter. The average volume transport of its core is about 1.3 Sv with a mean summer maximum of 2.1 Sv. It is forced by a strong cyclonic wind stress curl associated with the bending of the trade winds along the southern tip of Madagascar. The SMACC directly influences the coastal upwelling regions south of Madagascar. Its existence is likely to influence local fisheries and larval transport patterns, as well as the connectivity with the Agulhas Current, affecting the returning branch of the global overturning circulation.enCoastal currentCoastal upwellingMadagascarOcean modelSMACCsverdrupArticleRamanantsoa, J., Penven, P., Krug, M. J., Gula, J., & Rouault, M. (2018). Uncovering a new current: The Southwest MAdagascar coastal current. http://hdl.handle.net/10204/10342Ramanantsoa, JD, P Penven, Marjolaine J Krug, J Gula, and M Rouault "Uncovering a new current: The Southwest MAdagascar coastal current." (2018) http://hdl.handle.net/10204/10342Ramanantsoa J, Penven P, Krug MJ, Gula J, Rouault M. Uncovering a new current: The Southwest MAdagascar coastal current. 2018; http://hdl.handle.net/10204/10342.TY - Article AU - Ramanantsoa, JD AU - Penven, P AU - Krug, Marjolaine J AU - Gula, J AU - Rouault, M AB - Cruise data sets, satellite remote sensing observations, and model data analyses are combined to highlight the existence of a coastal surface poleward flow in the southwest of Madagascar: the Southwest MAdagascar Coastal Current (SMACC). The SMACC is a relatively shallow (<300 m) and narrow (<100 km wide) warm and salty coastal surface current, which flows along the south western coast of Madagascar toward the south, opposite to the dominant winds. The warm water surface signature of the SMACC extends from 22°S (upstream) to 26.4°S (downstream). The SMACC exhibits a seasonal variability: more intense in summer and reduced in winter. The average volume transport of its core is about 1.3 Sv with a mean summer maximum of 2.1 Sv. It is forced by a strong cyclonic wind stress curl associated with the bending of the trade winds along the southern tip of Madagascar. The SMACC directly influences the coastal upwelling regions south of Madagascar. Its existence is likely to influence local fisheries and larval transport patterns, as well as the connectivity with the Agulhas Current, affecting the returning branch of the global overturning circulation. DA - 2018-02 DB - ResearchSpace DP - CSIR KW - Coastal current KW - Coastal upwelling KW - Madagascar KW - Ocean model KW - SMACC KW - sverdrup LK - https://researchspace.csir.co.za PY - 2018 SM - 0094-8276 SM - 1944-8007 T1 - Uncovering a new current: The Southwest MAdagascar coastal current TI - Uncovering a new current: The Southwest MAdagascar coastal current UR - http://hdl.handle.net/10204/10342 ER -