@article{fdi:010095935,
  title = {{T}hree decades of interannual variability in modeled primary production in the {P}eruvian {U}pwelling {R}egion (1993-2022)},
  author = {{M}ogollon, {R}. and {C}olas, {F}ran{\c{c}}ois and {E}chevin, {V}incent and {T}am, {J}. and {E}spinoza-{M}orriberon, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study explores three decades (1993-2022) of interannual variability in primary production ({PP}) using a coupled physical-biogeochemical model. {A} long-term positive trend in the vertically-integrated {PP} was found in both the central and northern domains, exceeding 6 mol {C} m-2 yr-1 per decade, highlighting an increasing contribution of these regions to overall productivity. {O}ver the study period, the region produced a cumulative 8.6 billion metric tons of carbon, underscoring its substantial role as a carbon sink despite its relatively small spatial extent. {I}nterannual climatic events strongly modulated {PP}. {N}egative {PP} anomalies during {E}l {N}iño events and positive {PP} anomalies during {L}a {N}iña phases were primarily constrained within the first 10 m depths. {T}he sensitivity analysis demonstrated that biological drivers, particularly chlorophyll concentration and phytoplankton biomass, dominated {PP} variability, accounting for over 95% of the explained variance. {P}hysical factors, such as light availability, temperature, played secondary but significant roles during extreme events, modulating {PP} alongside biological processes. {O}verall, the findings reveal a resilient yet highly dynamic system, with long-term increases in productivity counterbalanced by episodic disruptions tied to interannual climatic variability. {T}hese results emphasize the importance of biological drivers in sustaining productivity and provide valuable insights into the factors shaping the variability and trends in this highly productive marine ecosystem.},
  keywords = {{P}rimary production ; {H}umboldt {C}urrent {S}ystem ; {CROCO} model ; {PISCES} ; biogeochemical model ; {PEROU} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{O}cean {M}odelling},
  volume = {200},
  numero = {},
  pages = {102669 [11 p.]},
  ISSN = {1463-5003},
  year = {2026},
  DOI = {10.1016/j.ocemod.2025.102669},
  URL = {https://www.documentation.ird.fr/hor/fdi:010095935},
}