Surface temperature reconstruction using alkenones from sediment core B0406 retreived in the Peru upwelling area
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2013
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| _version_ | 1867171814564691968 |
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| author | Gutièrrez, Dimitri Bouloubassi, Ioanna Sifeddine, Abdelfettah Purca, Sara Goubanova, Katerina Graco, Michelle Field, David Méjanelle, Laurence Velazco, Federico Lorre, Anne Salvatteci, Renato Quispe, Daniel Vargas, Gabriel Dewitte, Boris Ortlieb, Luc |
| author_facet | Gutièrrez, Dimitri Bouloubassi, Ioanna Sifeddine, Abdelfettah Purca, Sara Goubanova, Katerina Graco, Michelle Field, David Méjanelle, Laurence Velazco, Federico Lorre, Anne Salvatteci, Renato Quispe, Daniel Vargas, Gabriel Dewitte, Boris Ortlieb, Luc |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_808961 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Surface temperature reconstruction using alkenones from sediment core B0406 retreived in the Peru upwelling area Gutièrrez, Dimitri Bouloubassi, Ioanna Sifeddine, Abdelfettah Purca, Sara Goubanova, Katerina Graco, Michelle Field, David Méjanelle, Laurence Velazco, Federico Lorre, Anne Salvatteci, Renato Quispe, Daniel Vargas, Gabriel Dewitte, Boris Ortlieb, Luc Age; AGE; Alkenone, unsaturation index UK'37; B0406; Calculated from C37 alkenones (Prahl & Wakeham, 1987); DEPTH, sediment/rock; GC; Gravity corer; Sea surface temperature; World Ocean 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). |
| title | Surface temperature reconstruction using alkenones from sediment core B0406 retreived in the Peru upwelling area |
| topic | Age; AGE; Alkenone, unsaturation index UK'37; B0406; Calculated from C37 alkenones (Prahl & Wakeham, 1987); DEPTH, sediment/rock; GC; Gravity corer; Sea surface temperature; World Ocean |
| url | https://doi.org/10.1594/PANGAEA.808961 |