@article{fdi:010075614, title = {{O}bservations and mechanisms for the formation of deep equatorial and tropical circulation}, author = {{M}enesguen, {C}. and {D}elpech, {A}. and {M}arin, {F}r{\'e}d{\'e}ric and {C}ravatte, {S}ophie and {S}chopp, {R}. and {M}orel, {Y}.}, editor = {}, language = {{ENG}}, abstract = {{T}he {I}ntermediate and {D}eep {E}quatorial and {T}ropical {C}irculations ({DEC} and {DTC}) consist of a complex system of zonal jets. {T}his paper attempts at unifying existing observations and theories to present our current understanding of this jets system. {R}ecent in situ observations suggesting a continuity between {DEC} and {DTC} are confronted against the various generation mechanisms that have been proposed in the literature. {T}he key notion to differentiate these previous studies lies in the so-called "cascade of mechanisms," that is, the energy pathway and equilibration processes chain that lead to the jets from their initial energy source. {M}any studies see the deep equatorial intraseasonal variability as the initial energy source, highlighting its key role in energizing the {DEC} and {DTC}. {H}owever, critical gaps remain in this cascade of mechanisms and limit substantially our ability to represent the jets in {O}cean {G}lobal {C}irculation {M}odels. {T}his paper aims at identifying such gaps and propose future research directions.}, keywords = {deep equatorial circulation ; deep tropical circulation ; zonal jets ; {ZONE} {TROPICALE} ; {ZONE} {EQUATORIALE}}, booktitle = {}, journal = {{E}arth and {S}pace {S}cience}, volume = {6}, numero = {3}, pages = {370--386}, ISSN = {2333-5084}, year = {2019}, DOI = {10.1029/2018ea000438}, URL = {https://www.documentation.ird.fr/hor/fdi:010075614}, }