Beraki, Asmerom FLandman, WA2014-04-102014-04-102013-09Beraki, A.F. and Landman, W.A. 2013. The role of the southern annular mode in dynamical global coupled model. In: 29th Annual Conference of South African Society for Atmospheric Sciences, Durban, South Africa, 26-27 September 2013http://hdl.handle.net/10204/733629th Annual Conference of South African Society for Atmospheric Sciences, Durban, South Africa, 26-27 September 2013The interannual and decadal variability of the Southern Annual Mode (SAM) was examined in the ECHAM 4.5-MOM3-SA ocean-atmosphere coupled general circulation model (OAGCM). The analysis placed emphasis on the behavior of the SAM when its variability and impact becomes noticeable in the extra-tropical subcontinent. Further, the coupling interaction of the SAM with vertically intergraded moisture flux, rainfall and sea surface temperature (SST) was also investigated and compared with observations. The result revealed that the model was successful in capturing observed features of the oscillation. Nevertheless, the model SAM was found to exert more influence on the underlying atmosphere. The analysis unfolded that the low-frequency signal (11years cycle) was more likely explained by natural variability. Further, the model has shown potential in predicting the austral winter slowly evolving climate signal when the temporal vacillation of the SAM is adjusted.enSouthern Annual ModeSAMOcean-atmosphere coupled general circulation modelOAGCMTele-connectionClimate variabilityConference PresentationBeraki, A. F., & Landman, W. (2013). The role of the southern annular mode in dynamical global coupled model. http://hdl.handle.net/10204/7336Beraki, Asmerom F, and WA Landman. "The role of the southern annular mode in dynamical global coupled model." (2013): http://hdl.handle.net/10204/7336Beraki AF, Landman W, The role of the southern annular mode in dynamical global coupled model; 2013. http://hdl.handle.net/10204/7336 .TY - Conference Presentation AU - Beraki, Asmerom F AU - Landman, WA AB - The interannual and decadal variability of the Southern Annual Mode (SAM) was examined in the ECHAM 4.5-MOM3-SA ocean-atmosphere coupled general circulation model (OAGCM). The analysis placed emphasis on the behavior of the SAM when its variability and impact becomes noticeable in the extra-tropical subcontinent. Further, the coupling interaction of the SAM with vertically intergraded moisture flux, rainfall and sea surface temperature (SST) was also investigated and compared with observations. The result revealed that the model was successful in capturing observed features of the oscillation. Nevertheless, the model SAM was found to exert more influence on the underlying atmosphere. The analysis unfolded that the low-frequency signal (11years cycle) was more likely explained by natural variability. Further, the model has shown potential in predicting the austral winter slowly evolving climate signal when the temporal vacillation of the SAM is adjusted. DA - 2013-09 DB - ResearchSpace DP - CSIR KW - Southern Annual Mode KW - SAM KW - Ocean-atmosphere coupled general circulation model KW - OAGCM KW - Tele-connection KW - Climate variability LK - https://researchspace.csir.co.za PY - 2013 T1 - The role of the southern annular mode in dynamical global coupled model TI - The role of the southern annular mode in dynamical global coupled model UR - http://hdl.handle.net/10204/7336 ER -