Gutierrez D. auteur aut IRD Bouloubassi I. auteur aut IRD Sifeddine Abdelfettah auteur aut IRD Purca S. auteur aut IRD Goubanova K. auteur aut IRD Graco M. auteur aut IRD Field D. auteur aut IRD Mejanelle L. auteur aut IRD Velazco F. auteur aut IRD Lorre A. auteur aut IRD Salvatteci R. auteur aut IRD Quispe D. auteur aut IRD Vargas G. auteur aut IRD Dewitte Boris auteur aut IRD Ortlieb Luc auteur aut IRD text journalArticle eng text/pdf reformatted digital access We reconstructed a high-resolution, alkenone-based sea surface temperature (SST) record spanning the last ca. 150 years, from a sediment core retrieved within the main upwelling zone off Peru. A conspicuous SST decline is evidenced since the 1950s despite interdecadal SST variability. Instrumental SST data and reanalysis of ECMWF ERA 40 winds suggest that the recent coastal cooling corresponds mainly to an intensification of alongshore winds and associated increase of upwelling in spring. Consistently, both proxy and instrumental data evidence increased productivity in phase with the SST cooling. Our data expand on previous reports on recent SST cooling in other Eastern Boundary upwelling systems and support scenarios that relate coastal upwelling intensification to global warming. Yet, further investigations are needed to assess the role of different mechanisms and forcings (enhanced local winds vs. spin-up of the South Pacific High Pressure cell). Citation: Gutierrez, D., et al. (2011), Coastal cooling and increased productivity in the main upwelling zone off Peru since the mid-twentieth century, Geophys. Res. Lett., 38, L07603, doi:10.1029/2010GL046324. specialized PACIFIQUE PEROU 064 38 L07603 2011 0094-8276 https://www.documentation.ird.fr/hor/fdi:010053497 10.1029/2010gl046324 0094-8276 [F B010053497] https://www.documentation.ird.fr/hor/fdi:010053497 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers16-08/010053497.pdf IRD - Base Horizon / Pleins textes 2011-05-31 2021-10-30 fdi:010053497 fre