@article{fdi:010055996, title = {{D}ynamics of decadal variability in the {A}tlantic subpolar gyre : a stochastically forced oscillator}, author = {{B}orn, {A}. and {M}ignot, {J}uliette}, editor = {}, language = {{ENG}}, abstract = {{I}nternal variability of the {A}tlantic subpolar gyre is investigated in a 600 years control simulation of a comprehensive coupled climate model. {T}he subpolar gyre shows irregular oscillations of decadal time scale with most spectral power between 15 and 20 years. {P}ositive and negative feedback mechanisms act successively on the circulation leading to an internal oscillation. {T}his involves periodically enhanced deep convection in the subpolar gyre center and intermittently enhanced air-sea thermal coupling. {A}s a result, anomalies of the large-scale atmospheric circulation can be transferred to the ocean on the ocean's intrinsic time scale, exciting the oscillator stochastically. {A} detailed understanding of oscillatory mechanisms of the ocean and their sensitivity to atmospheric forcing holds considerable potential for decadal predictions as well as for the interpretation of proxy data records.}, keywords = {{O}cean circulation ; {N}orth {A}tlantic ; {S}ubpolar gyre ; {D}ecadal variability}, booktitle = {}, journal = {{C}limate {D}ynamics}, volume = {39}, numero = {1-2}, pages = {461--474}, ISSN = {0930-7575}, year = {2012}, DOI = {10.1007/s00382-011-1180-4}, URL = {https://www.documentation.ird.fr/hor/fdi:010055996}, }