Articles | Volume 21, issue 5
https://doi.org/10.5194/cp-21-919-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/cp-21-919-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 May 2025
Research article |
| 20 May 2025
| 20 May 2025
The Early–Middle Pleistocene Transition in the Gulf of Cadiz (NE Atlantic) – an interplay between subtropical gyre and extremely cold surface waters
Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Alges, Portugal
Centro de Ciências do Mar (CCMAR/CIMAR LA), University of the Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
Invited contribution by Aline Mega, recipient of the EGU Climate: Past, Present & Future Outstanding Student Poster and PICO Award 2019.
Teresa Rodrigues
Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Alges, Portugal
Centro de Ciências do Mar (CCMAR/CIMAR LA), University of the Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
Emília Salgueiro
Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Alges, Portugal
Centro de Ciências do Mar (CCMAR/CIMAR LA), University of the Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
Mária Padilha
Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Alges, Portugal
Henning Kuhnert
MARUM, Universität Bremen, Leobener Straße 8, 28359 Bremen, Germany
Antje H. L. Voelker
Divisão de Geologia e Georecursos Marinhos, Instituto Português do Mar e da Atmosfera (IPMA), Avenida Doutor Alfredo Magalhães Ramalho 6, 1495-165 Alges, Portugal
Centro de Ciências do Mar (CCMAR/CIMAR LA), University of the Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
Publisher's note: The supplement has been exchanged after publication of the final article because the article has been published with an old version of the supplement and not with the one needed for the revised version where two additional figures appear:
- Figure 2 shows the % G. truncatulinoides distribution in the North Atlantic, in support to the related text added in the "Material and methods" section.
- Figure 4 reveals the differences between the age models used in this paper and the previously published Bajo et al. (2020) speleothem ages; as discussed in the "Results" section on the chronostratigraphy.
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Our research explores climatic changes during the Early–Middle Pleistocene (1006–750 ka) on the southern Portuguese margin. We found that warm, subtropical-gyre-related conditions dominated. However, those conditions were occasionally interrupted by extreme cold events during the glacial periods. Our data show that these cold events, linked to changes in the North Atlantic's circulation, reached as far south as 36° N and significantly impacted marine ecosystems in the surface ocean.
Our research explores climatic changes during the Early–Middle Pleistocene (1006–750 ka) on the...
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