PANGAEA_707279 Reconstruction of continental mean air temperature across the PETM of IODP Hole 302-M0004A (Appendix A) Weijers, Johan W H; Schouten, Stefan; Sluijs, Appy; Brinkhuis, Henk; Sinninghe Damsté, Jaap S Reconstruction of continental mean air temperature across the PETM of IODP Hole 302-M0004A (Appendix A) 2007 PANGAEA Dataset Supplement to: Weijers, Johan W H; Schouten, Stefan; Sluijs, Appy; Brinkhuis, Henk; Sinninghe Damsté, Jaap S (2007): Warm arctic continents during the Palaeocene-Eocene thermal maximum. Earth and Planetary Science Letters, 261(1-2), 230-238, https://doi.org/10.1016/j.epsl.2007.06.033 https://doi.pangaea.de/10.1594/PANGAEA.707279 Investigator Johan W H Weijers Johan.Weijers@shell.com Earth Science DEPTH, sediment/rock Sample code/label Cyclization ratio of branched tetraethers Methylation index of branched tetraethers Temperature, annual mean Osmundaceae geoscientificInformation 302-M0004A ACEX-M4A Exp302 DSDP/ODP/IODP sample designation High Performance Liquid Chromatography - Mass spectrometry (HPLC-MS) Calculated Counting >15 µm fraction CCGS Captain Molly Kool (Vidar Viking) 2004-08-27 2004-08-27 Complete 87.86658 87.86658 136.17735 136.17735 378.21 m (DEPTH, sediment/rock) 390.71 m (DEPTH, sediment/rock) IODP Integrated Ocean Drilling Program / International Ocean Discovery Program unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 219 data points text/tab-separated-values Weijers, Johan W H; Schouten, Stefan; Sluijs, Appy; Brinkhuis, Henk; Sinninghe Damsté, Jaap S (2008): Erratum to “Warm arctic continents during the Palaeocene-Eocene thermal maximum” [Earth and Planetary Science Letters, 261, 2007, 230-238]. Earth and Planetary Science Letters, 268(1-2), 243, https://doi.org/10.1016/j.epsl.2008.01.013

The Palaeocene-Eocene Thermal Maximum (PETM; ~55.5 Ma) is a geologically relatively brief episode of extreme warmth. Both deep and surface ocean temperatures increased by up to 5 °C in equatorial waters and up to 8 °C in mid and high latitude waters. From the continents, the annual mean air temperature response during the PETM is still largely unknown, mainly due to a lack of quantitative temperature proxies and sufficient suitable, continuous high resolution records. Recently, a new proxy for continental temperature reconstructions has been proposed, based on the distribution of membrane lipids of bacteria in present-day soils [Weijers et al., 2007, doi:10.1016/j.gca.2006.10.003] and shown to reconstruct annual mean air temperature. In this study we applied this new proxy in an attempt to reconstruct the air temperature in high latitude continental areas during the PETM by analysis of a marine sedimentary sequence obtained from the Lomonosov Ridge in the central Arctic Ocean (Integrated Ocean Drilling Program Expedition 302, Site 004, Hole A). The results indicate a warming of ~8 °C above background values of ~17 °C. This warming is coincident with a similar rise in sea surface temperatures documented earlier. Our results thus further confirm the warm conditions in the Arctic, and point to a strongly reduced latitudinal temperature gradient during the PETM. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.707279"!

https://doi.org/10.1016/j.epsl.2007.06.033 Warm arctic continents during the Palaeocene-Eocene thermal maximum https://doi.org/10.1016/j.epsl.2008.01.013 Erratum to “Warm arctic continents during the Palaeocene-Eocene thermal maximum” [Earth and Planetary Science Letters, 261, 2007, 230-238] https://doi.org/10.2204/iodp.proc.302.2006 Exp302 https://en.wikipedia.org/wiki/CCGS_Captain_Molly_Kool CCGS Captain Molly Kool (Vidar Viking) https://hdl.handle.net/10013/epic.27914.d001 DSDP/ODP/IODP sample designation https://www.iodp.org/ IODP DIF 9.4 2026-02-06