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Coastal cooling and increased productivity in the main upwelling zone off Peru since the mid-twentieth century

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dc.contributor.author Gutierrez, D es_PE
dc.contributor.author Bouloubassi, I es_PE
dc.contributor.author Sifeddine, A es_PE
dc.contributor.author Purca, S es_PE
dc.contributor.author Goubanova, K es_PE
dc.contributor.author Graco, M es_PE
dc.contributor.author Field, D es_PE
dc.contributor.author Mejanelle, L es_PE
dc.contributor.author Velazco, F es_PE
dc.contributor.author Lorre, A es_PE
dc.contributor.author Salvatteci, R es_PE
dc.contributor.author Quispe, D es_PE
dc.contributor.author Vargas, G es_PE
dc.contributor.author Dewitte, B es_PE
dc.contributor.author Ortlieb, L es_PE
dc.date.accessioned 2024-05-30T23:13:38Z
dc.date.available 2024-05-30T23:13:38Z
dc.date.issued 2011
dc.description This study was supported by IMARPE(Peru), the research unit LOCEAN‐IPSL (UMR 7192 CNRS/IRD/UPMC/MNHN) in France and the projects JEAI MIXPALEO,PALEOPECES, PALEOTRACES, DISCOH, PCCC and the‘CátedraCONCYTEC en Ciencias del Mar’. We thank Jorge Vasquez (JPL) for pro-viding the 4km resolution GHRSST‐PP SST data and David Correa forperforming the objective interpolation of these data. Finally, we thankFrancisco Chavez and Monique Messié, with whom we sustained sounddiscussions that helped us for the preparation of this paper.
dc.description.abstract 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).
dc.description.sponsorship Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec
dc.identifier.doi https://doi.org/10.1029/2010GL046324
dc.identifier.isi 289649400001
dc.identifier.uri https://hdl.handle.net/20.500.12390/1043
dc.language.iso eng
dc.publisher Wiley Online Library
dc.relation.ispartof Geophysical Research Letters
dc.rights info:eu-repo/semantics/openAccess
dc.subject coastal cooling
dc.subject alkenone-based sea surface temperature es_PE
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.05.04
dc.title Coastal cooling and increased productivity in the main upwelling zone off Peru since the mid-twentieth century
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication
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