LGM, planktic foraminifera (EPILOG version)


[1] We used planktic foraminiferal assemblages in 70 sediment cores from the tropical and subtropical South Atlantic Ocean (10°N–37°S) to estimate annual mean sea surface temperatures (SSTs) and seasonality for the Last Glacial Maximum with a modified version of the Imbrie-Kipp transfer function method (IKTF) that takes into account the abundance of rare but temperature sensitive species. In contrast to CLIMAP Project Members [1981], the reconstructed SSTs indicate cooler glacial SSTs in the entire tropical/subtropical South Atlantic with strongest cooling in the upwelling region off Namibia (7–10°C) and smallest cooling (1–2°C) in the western subtropical gyre. In the western Atlantic, our data support recent temperature estimates from other proxies. In the upwelling regions in the eastern Atlantic, our data conflict with SST reconstructions from alkenones, which may be due to an environmental preference of the alkenone-producing algae or to an underestimation of foraminiferal SSTs due to anomalous high abundances of N. pachyderma (sinistral).

Supplement to: Niebler, Hans-Stefan; Arz, Helge Wolfgang; Donner, Barbara; Mulitza, Stefan; Pätzold, Jürgen; Wefer, Gerold (2003): Sea surface temperatures in the equatorial and South Atlantic Ocean during the Last Glacial Maximum (23–19 ka). Paleoceanography, 18(3), 1069

DOI https://doi.org/10.1594/PANGAEA.57027
Related Identifier https://doi.org/10.1029/2003PA000902
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.57027
Creator Niebler, Hans-Stefan; Arz, Helge Wolfgang ; Donner, Barbara; Mulitza, Stefan ; Pätzold, Jürgen ; Wefer, Gerold
Publisher PANGAEA
Publication Year 2000
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 6559 data points
Discipline Geosciences; Natural Sciences
Spatial Coverage (-45.882W, -36.833S, 17.543E, 5.333N); Angola Basin; Walvis Ridge, Southeast Atlantic Ocean; Guinea Basin; Equatorial Atlantic; Brazil Basin; Cape Basin; Walvis Ridge; Hunter Channel; Eastern Rio Grande Rise; West Angola Basin; Mid Atlantic Ridge; East Brazil Basin; Amazon Fan; Niger Sediment Fan; Namibia continental slope; South African margin; Southwest Walvis Ridge; Argentine Basin; Rio Grande Rise; NE-Brazilian continental margin; Southern Cape Basin; Northern Cape Basin
Temporal Coverage Begin 1988-02-21T00:00:00Z
Temporal Coverage End 1998-05-09T14:06:00Z