@article{fdi:010080100, title = {{M}esoscale simulation of tropical cyclones in the {S}outh {P}acific : climatology and interannual variability}, author = {{J}ourdain, {N}. {C}. and {M}archesiello, {P}atrick and {M}enk{\`e}s, {C}hristophe and {L}ef{\`e}vre, {J}{\'e}r{\^o}me and {V}incent, {E}. {M}. and {L}engaigne, {M}atthieu and {C}hauvin, {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {W}eather {R}esearch and {F}orecast model at 1/3 degrees resolution is used to simulate the statistics of tropical cyclone ({TC}) activity in the present climate of the {S}outh {P}acific. {I}n addition to the large-scale conditions, the model is shown to reproduce a wide range of mesoscale convective systems. {T}ropical cyclones grow from the most intense of these systems formed along the {S}outh {P}acific convergence zone ({SPCZ}) and sometimes develop into hurricanes. {T}he three-dimensional structure of simulated tropical cyclones is in excellent agreement with dropsondes and satellite observations. {T}he mean seasonal and spatial distributions of {TC} genesis and occurrence are also in good agreement with the {J}oint {T}yphoon {W}arning {C}enter ({JTWC}) data. {I}t is noted, however, that the spatial pattern of {TC} activity is shifted to the northeast because of a similar bias in the environmental forcing. {O}ver the whole genesis area, 8.2 +/- 3.5 cyclones are produced seasonally in the model, compared with 6.6 +/- 3.0 in the {JTWC} data. {P}art of the interannual variability is associated with {E}l {N}ino-{S}outhern {O}scillation ({ENSO}). {ENSO}-driven displacement of the {SPCZ} position produces a dipole pattern of correlation and results in a weaker correlation when the opposing correlations of the dipole are amalgamated over the entire {S}outh {P}acific region. {A}s a result, environmentally forced variability at the regional scale is relatively weak, that is, of comparable order to stochastic variability (+/- 1.7 cyclones yr(-1)), which is estimated from a 10-yr climatological simulation. {S}tochastic variability appears essentially related to mesoscale interactions, which also affect {TC} tracks and the resulting occurrence.}, keywords = {{PACIFIQUE} {SUD}}, booktitle = {}, journal = {{J}ournal of {C}limate}, volume = {24}, numero = {1}, pages = {3--25}, ISSN = {0894-8755}, year = {2011}, DOI = {10.1175/2010jcli3559.1}, URL = {https://www.documentation.ird.fr/hor/fdi:010080100}, }