@article{fdi:010062700, title = {{O}cean feedback to tropical cyclones : climatology and processes}, author = {{J}ullien, {S}. and {M}archesiello, {P}atrick and {M}enk{\`e}s, {C}hristophe and {L}ef{\`e}vre, {J}{\'e}r{\^o}me and {J}ourdain, {N}. {C}. and {S}amson, {G}. and {L}engaigne, {M}atthieu}, editor = {}, language = {{ENG}}, abstract = {{T}his study presents the first multidecadal and coupled regional simulation of cyclonic activity in the {S}outh {P}acific. {T}he long-term integration of state-of the art models provides reliable statistics, missing in usual event studies, of air-sea coupling processes controlling tropical cyclone ({TC}) intensity. {T}he coupling effect is analyzed through comparison of the coupled model with a companion forced experiment. {C}yclogenesis patterns in the coupled model are closer to observations with reduced cyclogenesis in the {C}oral {S}ea. {T}his provides novel evidence of air-sea coupling impacting not only intensity but also spatial cyclogenesis distribution. {S}torm-induced cooling and consequent negative feedback is stronger for regions of shallow mixed layers and thin or absent barrier layers as in the {C}oral {S}ea. {T}he statistical effect of oceanic mesoscale eddies on {TC} intensity (crossing over them 20 % of the time) is also evidenced. {A}nticyclonic eddies provide an insulating effect againststorm-induced upwelling and mixing and appear to reduce sea surface temperature ({SST}) cooling. {C}yclonic eddies on the contrary tend to promote strong cooling, particularly through storm-induced upwelling. {A}ir-sea coupling is shown to have a significant role on the intensification process but the sensitivity of {TC}s to {SST} cooling is nonlinear and generally lower than predicted by thermodynamic theories: about 15 rather than over 30 h{P}a degrees {C}-1 and only for strong cooling. {T}he reason is that the cooling effect is not instantaneous but accumulated over time within the {TC} inner-core. {T}hese results thus contradict the classical evaporation-wind feedback process as being essential to intensification and rather emphasize the role of macro-scale dynamics.}, keywords = {{T}ropical cyclones ; {A}ir-sea coupling ; {M}odeling ; {ZONE} {TROPICALE} ; {PACIFIQUE} {SUD}}, booktitle = {}, journal = {{C}limate {D}ynamics}, volume = {43}, numero = {9-10}, pages = {2831--2854}, ISSN = {0930-7575}, year = {2014}, DOI = {10.1007/s00382-014-2096-6}, URL = {https://www.documentation.ird.fr/hor/fdi:010062700}, }