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Leduc, Guillaume; Schneider, Ralph R; Kim, Jung-Hyun; Lohmann, Gerrit (2010): Expanded GHOST database. PANGAEA, https://doi.org/10.1594/PANGAEA.737370, Supplement to: Leduc, G et al. (2010): Holocene and Eemian Sea surface temperature trends as revealed by alkenone and Mg/Ca paleothermometry. Quaternary Science Reviews, 29(7-8), 989-1004, https://doi.org/10.1016/j.quascirev.2010.01.004

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Abstract:
In this study we review a global set of alkenone- and foraminiferal Mg/Ca-derived sea surface temperatures (SST) records from the Holocene and compare them with a suite of published Eemian SST records based on the same approach. For the Holocene, the alkenone SST records belong to the actualized GHOST database (Kim, J.-H., Schneider R.R., 2004). The actualized GHOST database not only confirms the SST changes previously described but also documents the Holocene temperature evolution in new oceanic regions such as the Northwestern Atlantic, the eastern equatorial Pacific, and the Southern Ocean. A comparison of Holocene SST records stemming from the two commonly applied paleothermometry methods reveals contrasting - sometimes divergent - SST evolution, particularly at low latitudes where SST records are abundant enough to infer systematic discrepancies at a regional scale. Opposite SST trends at particular locations could be explained by out-of-phase trends in seasonal insolation during the Holocene. This hypothesis assumes that a strong contrast in the ecological responses of coccolithophores and planktonic foraminifera to winter and summer oceanographic conditions is the ultimate reason for seasonal differences in the origin of the temperature signal provided by these organisms. As a simple test for this hypothesis, Eemian SST records are considered because the Holocene and Eemian time periods experienced comparable changes in orbital configurations, but had a higher magnitude in insolation variance during the Eemian. For several regions, SST changes during both interglacials were of a similar sign, but with higher magnitudes during the Eemian as compared to the Holocene. This observation suggests that the ecological mechanism shaping SST trends during the Holocene was comparable during the penultimate interglacial period. Although this "ecology hypothesis" fails to explain all of the available results, we argue that any other mechanism would fail to satisfactorily explain the observed SST discrepancies among proxies.
Funding:
German Research Foundation (DFG), grant/award no. 25575884: Integrierte Analyse zwischeneiszeitlicher Klimadynamik
Coverage:
Median Latitude: 14.650135 * Median Longitude: 17.085231 * South-bound Latitude: -50.000000 * West-bound Longitude: -158.190000 * North-bound Latitude: 74.998083 * East-bound Longitude: 179.500000
Date/Time Start: 1963-04-05T00:00:00 * Date/Time End: 2003-02-27T06:25:00
Event(s):
96-619 * Latitude: 27.193500 * Longitude: -91.409000 * Date/Time: 1983-10-21T00:00:00 * Elevation: -2259.0 m * Penetration: 208.7 m * Recovery: 111.9 m * Location: Gulf of Mexico * Campaign: Leg96 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 134.4 m cored; 0 m drilled; 83.2 % recovery
108-658C * Latitude: 20.749200 * Longitude: -18.580800 * Date/Time Start: 1986-03-08T00:45:00 * Date/Time End: 1986-03-08T16:00:00 * Elevation: -2273.0 m * Penetration: 72.9 m * Recovery: 70.38 m * Location: Canarias Sea * Campaign: Leg108 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 72.9 m cored; 0 m drilled; 96.5 % recovery
138-846 * Latitude: -3.095000 * Longitude: -90.818330 * Date/Time Start: 1991-05-21T00:00:00 * Date/Time End: 1991-05-26T00:00:00 * Elevation: -3296.0 m * Penetration: 871.5 m * Recovery: 821.61 m * Location: South Pacific Ocean * Campaign: Leg138 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 92 cores; 865.5 m cored; 0 m drilled; 94.9 % recovery
Size:
133 datasets

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Datasets listed in this publication series

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  1. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core PC-4 using alkenones. https://doi.org/10.1594/PANGAEA.737262
  2. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core PC-17 using alkenones. https://doi.org/10.1594/PANGAEA.737260
  3. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core PL07-39PC using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737007
  4. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core RAPID-12-1K using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737008
  5. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core RC11-238 using alkenones. https://doi.org/10.1594/PANGAEA.737263
  6. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core RL11 using alkenones. https://doi.org/10.1594/PANGAEA.737264
  7. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SCS90-36 using alkenones. https://doi.org/10.1594/PANGAEA.737265
  8. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SO90-39KG using alkenones. https://doi.org/10.1594/PANGAEA.737269
  9. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SO90-93KL using alkenones. https://doi.org/10.1594/PANGAEA.737270
  10. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SO90-136KL using alkenones. https://doi.org/10.1594/PANGAEA.737268
  11. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SO93-126KL using alkenones. https://doi.org/10.1594/PANGAEA.737271
  12. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SO136-011GC using alkenones. https://doi.org/10.1594/PANGAEA.737266
  13. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SO139-74KL using alkenones. https://doi.org/10.1594/PANGAEA.737267
  14. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SSDP102 using alkenones. https://doi.org/10.1594/PANGAEA.737272
  15. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Summary of sea surface temperature trends reconstructed from alkenones for the Holocene. https://doi.org/10.1594/PANGAEA.735805
  16. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Summary of sea surface temperature trends reconstructed from Mg/Ca ratios for the Holocene. https://doi.org/10.1594/PANGAEA.735777
  17. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core ST.14 using alkenones. https://doi.org/10.1594/PANGAEA.737273
  18. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core ST.19 using alkenones. https://doi.org/10.1594/PANGAEA.737274
  19. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core ST.20 using alkenones. https://doi.org/10.1594/PANGAEA.737275
  20. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core SU81-18 using alkenones. https://doi.org/10.1594/PANGAEA.737276
  21. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core TN057-21PC using alkenones. https://doi.org/10.1594/PANGAEA.737277
  22. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core TR163-19 using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737009
  23. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core TR163-22 using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737010
  24. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core TY93-905 using alkenones. https://doi.org/10.1594/PANGAEA.737278
  25. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core TY93929/P using alkenones. https://doi.org/10.1594/PANGAEA.737279
  26. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core U938 using alkenones. https://doi.org/10.1594/PANGAEA.737280
  27. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V19-27 using alkenones. https://doi.org/10.1594/PANGAEA.737281
  28. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V19-28 using alkenones. https://doi.org/10.1594/PANGAEA.737282
  29. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V19-28 using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737011
  30. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V19-30 using alkenones. https://doi.org/10.1594/PANGAEA.737283
  31. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V21-30 using alkenones. https://doi.org/10.1594/PANGAEA.737285
  32. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V21-30 using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737012
  33. Leduc, G; Schneider, RR; Kim, J-H et al. (2010): Sea surface temperature reconstruction from sediment core V28-122 using Mg/Ca-ratios. https://doi.org/10.1594/PANGAEA.737013

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