@article{PAR00004045,
  title = {{I}mpact of atmospheric coastal jet off central {C}hile on sea surface temperature from satellite observations (2000-2007)},
  author = {{R}enault, {L}. and {D}ewitte, {B}oris and {F}alvey, {M}. and {G}arreaud, {R}. and {E}chevin, {V}incent and {B}onjean, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he coast of central {C}hile is characterized by intermittent low-level along-shore southerly wind periods, called coastal jets ({CJ}s). {I}n this study, we take advantage of long-term satellite data to document the {CJ}s characteristics over 2000-2007 and investigate its impact on upwelling. {T}he {CJ} structure has a core some 100 km from the shore and a cross-shore scale of similar to 160 km, and it usually lasts for several days (3-10). {I}ts period of occurrence ranges from weekly to a few months. {O}n the basis of covariance analyses between wind stress and sea surface temperature ({SST}) anomalies, it is found that {CJ} activity is seasonally phase locked with {SST}, with a peak season in {A}ugust-{O}ctober. {T}he statistically dominant forcing mechanisms of the {SST} cooling during {CJ} event is a combination of seaward advection of temperature resulting from {E}kman transport, air-sea heat exchange, and {E}kman-driven coastal divergence. {H}owever, case studies of two events suggest a significant sensitivity of the dominant upwelling forcing mechanisms to the background conditions. {F}or instance, the upward {E}kman pumping associated with cyclonic wind stress curl is enhanced for the event with the {CJ} located more to the south. {A}lthough there are limitations associated with both the formulation of the heat budget and the data sets, the results illustrate the complexity of the upwelling forcing mechanisms in this region and the need for realistic high-resolution forcing fluxes. {A} {CJ} activity index is also proposed that takes into account the coastal upwelling variability, which can be used for teleconnection studies.},
  keywords = {{CHILI}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch-{O}ceans},
  volume = {114},
  numero = {},
  pages = {{C}08006},
  ISSN = {0148-0227},
  year = {2009},
  DOI = {10.1029/2008jc005083},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00004045},
}