High-resolution SST records derived from planktonic foraminiferal Mg/Ca from the western equatorial Atlantic

doi:doi:10.1594/PANGAEA.931646

High-resolution SST records derived from planktonic foraminiferal Mg/Ca from the western equatorial Atlantic

Slowdowns of the Atlantic meridional overturning circulation during Heinrich stadials (HS) caused reductions in cross-equatorial heat transport, southward shifts of the Intertropical Convergence Zone and intensification of precipitation over eastern tropical South America. While these changes are well described, the associated spatial sea surface temperature (SST) patterns are still unclear. Here, we analyze proxy data to assess changes in ocean atmosphere interactions during HS over the western South Atlantic. Our SST proxy records show contrasting patterns between the tropical (warming) and the subtropical (no change) western South Atlantic during HS. We propose that the distinct SST behavior in the subtropics was associated with the cloud cover effect of the South Atlantic Convergence Zone over the upper ocean.

BibTex:

@dataset{Venancio_Igor_Martins_and_Shimizu_Marilia_Harumi_and_Santos_Thiago_Pereira_dos_and_Lessa_Douglas_O_and_Dias_Bruna_Borba_and_Chiessi_Cristiano_Mazur_and_Mulitza_Stefan_and_Kuhnert_Henning_and_Tiedemann_Ralf_and_Vahlenkamp_Maximilian_and_Bickert_Torsten_and_Belem_Andre_L_and_Sampaio_Gilvan_and_Albuquerque_Ana_Luiza_Spadano_and_Nobre_Carlos_2021,
    abstract = {Slowdowns of the Atlantic meridional overturning circulation during Heinrich stadials (HS) caused reductions in cross-equatorial heat transport, southward shifts of the Intertropical Convergence Zone and intensification of precipitation over eastern tropical South America. While these changes are well described, the associated spatial sea surface temperature (SST) patterns are still unclear. Here, we analyze proxy data to assess changes in ocean atmosphere interactions during HS over the western South Atlantic. Our SST proxy records show contrasting patterns between the tropical (warming) and the subtropical (no change) western South Atlantic during HS. We propose that the distinct SST behavior in the subtropics was associated with the cloud cover effect of the South Atlantic Convergence Zone over the upper ocean.},
    author = {Venancio, Igor Martins and Shimizu, Marilia Harumi and Santos, Thiago Pereira dos and Lessa, Douglas O and Dias, Bruna Borba and Chiessi, Cristiano Mazur and Mulitza, Stefan and Kuhnert, Henning and Tiedemann, Ralf and Vahlenkamp, Maximilian and Bickert, Torsten and Belem, Andre L and Sampaio, Gilvan and Albuquerque, Ana Luiza Spadano and Nobre, Carlos},
    doi = {10.1594/PANGAEA.931646},
    institution = {PANGAEA (Land Surface)},
    keyword = {'Atlantic', 'Brazil', 'Ca', 'Foraminifera', 'Heinrich Stadials', 'ITCZ', 'Mg', 'South America'},
    title = {High-resolution SST records derived from planktonic foraminiferal Mg/Ca from the western equatorial Atlantic},
    url = {https://service.tib.eu/ldmservice/vdataset/png-doi-10-1594-pangaea-931646},
    year = {2021}
}