@article{fdi:010081384, title = {{A}tlantic {E}quatorial {U}ndercurrent intensification counteracts warming-induced deoxygenation}, author = {{B}randt, {P}. and {H}ahn, {J}. and {S}chmidtko, {S}. and {T}uchen, {F}. {P}. and {K}opte, {R}. and {K}iko, {R}. and {B}ourl{\`e}s, {B}ernard and {C}zeschel, {R}. and {D}engler, {M}.}, editor = {}, language = {{ENG}}, abstract = {{T}he tropical {A}tlantic upper-ocean circulation experiences multiannual to decadal changes associated with different climate modes and is simultaneously adjusting to climate warming. {T}he most energetic current in the tropical {A}tlantic is the {E}quatorial {U}ndercurrent ({EUC}), which flows eastwards along the {E}quator. {O}n the basis of long-term moored observations, we show that the {EUC} strengthened by more than 20% from 2008 to 2018. {T}he intensification of the {EUC} is associated with increasing subsurface oxygen concentrations and a thickening of the upper-ocean oxygenated layer in the equatorial {A}tlantic. {T}hese changes counteract climate-warming-induced deoxygenation in the region. {T}he {EUC} strengthening is found to be mainly forced by trade wind changes in the western tropical {N}orth {A}tlantic. {A} 60-yr dataset reveals that the recent oxygen increase in the upper equatorial {A}tlantic is associated with multidecadal variability. {T}his variability is characterized by low oxygen concentrations in the 1990s and early 2000s, and high oxygen concentrations in the 1960s and 1970s. {T}he observed oxygen variability seems to be linked to a compression and expansion of the habitat of tropical pelagic fish, and must be accounted for when evaluating the possible consequences of deoxygenation for marine ecosystems and fisheries. {R}ecent strengthening of the {E}quatorial {U}ndercurrent counteracts warming-induced deoxygenation in the equatorial {A}tlantic, according to an analysis of long-term moored observations.}, keywords = {{ATLANTIQUE} ; {ZONE} {EQUATORIALE} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{N}ature {G}eoscience}, volume = {14}, numero = {}, pages = {278--282}, ISSN = {1752-0894}, year = {2021}, DOI = {10.1038/s41561-021-00716-1}, URL = {https://www.documentation.ird.fr/hor/fdi:010081384}, }