Articles | Volume 9, issue 1
Earth Syst. Dynam., 9, 285–297, 2018
https://doi.org/10.5194/esd-9-285-2018
Earth Syst. Dynam., 9, 285–297, 2018
https://doi.org/10.5194/esd-9-285-2018

Research article 20 Mar 2018

Research article | 20 Mar 2018

Sensitivity of the tropical climate to an interhemispheric thermal gradient: the role of tropical ocean dynamics

Stefanie Talento and Marcelo Barreiro

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Cited articles

Broccoli, A. J., Dahl, K. A., and Stouffer, R. J.: Response of the ITCZ to Northern Hemisphere cooling, Geophys. Res. Lett., 33, L01702, https://doi.org/10.1029/2005GL024546, 2006. 
Cane, M. A.: The response of an equatorial ocean to simple wind stress patterns. I-Model formulation and analytic results. II – Numerical results, J. Mar. Res., 37, 233–299, 1979. 
Chang, P.: A study of the seasonal cycle of sea surface temperature in the tropical Pacific Ocean using reduced gravity models, J. Geophys. Res.-Oceans, 99, 7725–7741, 1994. 
Chang, P., Wang, B., Li, T., and Ji, L.: Interactions between the seasonal cycle and the Southern Oscillation-Frequency entrainment and chaos in a coupled ocean–atmosphere model, Geophys. Res. Lett., 21, 2817–2820, 1994. 
Chiang, J. C. and Bitz, C. M.: Influence of high latitude ice cover on the marine Intertropical Convergence Zone, Clim. Dynam., 25, 477–496, https://doi.org/10.1007/s00382-005-0040-5, 2005. 
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In a series of simulations, with models of different complexity, we analyse the role of the tropical ocean dynamics in the transmission of information when an extratropical thermal forcing is imposed. In terms of annual means we find that the tropical ocean dynamics oppose the remote extratropical signal. However, changes in the sea surface temperature seasonal cycle in the equatorial Pacific Ocean become significant only once the tropical ocean dynamics are incorporated.
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