@article{fdi:010083266,
  title = {{E}vidences and drivers of ocean deoxygenation off {P}eru over recent past decades},
  author = {{E}spinoza-{M}orriberon, {D}. and {E}chevin, {V}. and {G}utierrez, {D}. and {T}am, {J}. and {G}raco, {M}. and {L}edesma, {J}. and {C}olas, {F}ran{\c{c}}ois},
  editor = {},
  language = {{ENG}},
  abstract = {{D}eoxygenation is a major threat to the coastal ocean health as it impacts marine life and key biogeochemical cycles. {U}nderstanding its drivers is crucial in the thriving and highly exploited {P}eru upwelling system, where naturally low-oxygenated subsurface waters form the so-called oxygen minimum zone ({OMZ}), and a slight vertical shift in its upper limit may have a huge impact. {H}ere we investigate the long-term deoxygenation trends in the upper part of the nearshore {OMZ} off {P}eru over the period 1970-2008. {W}e use a unique set of dissolved oxygen in situ observations and several high-resolution regional dynamical-biogeochemical coupled model simulations. {B}oth observation and model present a nearshore deoxygenation above 150 m depth, with a maximum trend of - 10 mu mol kg(-1) decade(1), and a shoaling of the oxycline depth (- 6.4 m decade(-1)). {M}odel sensitivity analysis shows that the modeled oxycline depth presents a non-significant (+ 0.9 m decade(-1)) trend when remote forcing is suppressed, while a significant oxycline shoaling (- 3 m decade(-1)) is obtained when the wind variability is suppressed. {T}his indicates that the nearshore deoxygenation can be attributed to the slowdown of the near-equatorial eastward currents, which transport oxygen-rich waters towards the {P}eruvian shores. {T}he large uncertainties in the estimation of this ventilation flux and the consequences for more recent and future deoxygenation trends are discussed.},
  keywords = {{PEROU} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {11},
  numero = {1},
  pages = {20292 [10 p.]},
  ISSN = {2045-2322},
  year = {2021},
  DOI = {10.1038/s41598-021-99876-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083266},
}