@article{fdi:010079014,
  title = {{I}ntraseasonal response of the northern {I}ndian {O}cean coastal waveguide to the {M}adden-{J}ulian {O}scillation},
  author = {{V}ialard, {J}{\'e}r{\^o}me and {S}henoi, {S}. {S}. {C}. and {M}c{C}reary, {J}. {P}. and {S}hankar, {D}. and {D}urand, {F}abien and {F}ernando, {V}. and {S}hetye, {S}. {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} new observational record of upper-ocean currents at 15 degrees {N} on the western coast of {I}ndia is dominated by intraseasonal (55 - 110 day) variations of alongshore currents, whereas sea level at the same location has a clear seasonal signal. {T}hese observations can be interpreted within the framework of linear wave theory. {A}t 15 degrees {N}, the minimum period for planetary waves is similar to 90 day, meaning that intraseasonal energy is largely trapped at the coast in the form of poleward-propagating {K}elvin waves, while lower-frequency signals associated with the annual cycle can radiate offshore as planetary waves. {T}his dynamical difference results in a steeper offshore slope of sea level at intraseasonal timescale, and thus stronger geostrophic alongshore currents. {A} consequence is that the alongshore currents are in-phase with intraseasonally-filtered sea level near the coast, and a gridded satellite product is shown to reproduce the current variations reasonably well. {T}he intraseasonal current variations along the west coast of {I}ndia are part of basin-scale sea-level fluctuations of the {N}orthern {I}ndian {O}cean equatorial and coastal waveguides. {T}he wind forcing associated with this basin scale circulation closely matches surface wind signals associated with the {M}adden-{J}ulian {O}scillation. {C}itation: {V}ialard, {J}., {S}. {S}. {C}. {S}henoi, {J}. {P}. {M}c{C}reary, {D}. {S}hankar, {F}. {D}urand, {V}. {F}ernando, and {S}. {R}. {S}hetye ( 2009), {I}ntraseasonal response of the northern {I}ndian {O}cean coastal waveguide to the {M}adden-{J}ulian {O}scillation, {G}eophys. {R}es. {L}ett., 36, {L}14606, doi: 10.1029/2009{GL}038450.},
  keywords = {{OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {36},
  numero = {},
  pages = {{L}14606 [5 ]},
  ISSN = {0094-8276},
  year = {2009},
  DOI = {10.1029/2009gl038450},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079014},
}