Catunda, Maria Carolina Amorim (2021): Thermocline temperature gradient above IODP Site 306-U1313 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932298
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Abstract:
Temperature gradients listed in this dataset were used to assess the potential connection between upper ocean stratification at IODP Site U1313 (41°N, 33°W) and northward heat transport between this and ODP Site 982 (58°N, 16°W). Upper-ocean stratification at Site U1313 was qualitatively estimated using the temperature gradient between alkenone-based SST (Naafs et al., 2012) and Mg/Ca-based SubT (in an accompanying dataset). Both records were produced from the same core sections of the primary splice. As the temporal resolution of the SST record (1 data point every approx. 0.6 kyrs) is double that of SubT (1 data point every approx. 1.2 kyrs), SSTs were linearly interpolated to match SubTs in age (thereby reducing the SST resolution in half). We then subtracted SubT from SST. A similar procedure was followed to calculate the surface temperature gradients between sites U1313 and 982 (Lawrence et al., 2010). The age models of both records were produced by tuning benthic oxygen isotopes to the LR04 stack. As the temporal resolution of the SST record from Site U1313 is higher than that from Site 982, U1313 SSTs were linearly interpolated to match 982 SSTs in age. We then subtracted 982 SSTs from U1313 SSTs.
Keyword(s):
Supplement to:
Catunda, Maria Carolina Amorim; Bahr, André; Kaboth-Bahr, Stefanie; Zhang, Xu; Foukal, N; Friedrich, Oliver (2021): Subsurface Heat Channel Drove Sea Surface Warming in the High‐Latitude North Atlantic During the Mid‐Pleistocene Transition. Geophysical Research Letters, 48(11), https://doi.org/10.1029/2020GL091899
Related to:
Lawrence, Kira T; Sosdian, Sindia M; White, H E; Rosenthal, Yair (2010): North Atlantic climate evolution through the Plio-Pleistocene climate transitions. Earth and Planetary Science Letters, 300(3-4), 329-342, https://doi.org/10.1016/j.epsl.2010.10.013
Naafs, Bernhard David A; Hefter, Jens; Acton, Gary D; Haug, Gerald H; Martínez‐García, Alfredo; Pancost, Richard D; Stein, Ruediger (2012): Strengthening of North American dust sources during the late Pliocene (2.7 Ma). Earth and Planetary Science Letters, 317-318, 8-19, https://doi.org/10.1016/j.epsl.2011.11.026
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. DFG BA 3809/8: Evolution of the oceanic circulation in the subtropical Atlantic across the Mid-Pleistocene Transition
Coverage:
Latitude: 41.000000 * Longitude: -32.957300
Date/Time Start: 2004-03-28T00:00:00 * Date/Time End: 2004-04-02T00:00:00
Minimum Elevation: -3426.0 m * Maximum Elevation: -3426.0 m
Event(s):
306-U1313 * Latitude: 41.000000 * Longitude: -32.957300 * Date/Time Start: 2004-03-28T00:00:00 * Date/Time End: 2004-04-02T00:00:00 * Elevation: -3426.0 m * Campaign: Exp306 (North Atlantic Climate 2) * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Catunda, Maria Carolina Amorim | Geocode – Catunda et al., 2021 | |
| 2 | Sea surface temperature | SST | °C | Catunda, Maria Carolina Amorim | SST, from UK'37 | Naafs et al., 2012, original resolution |
| 3 | AGE | Age | ka BP | Catunda, Maria Carolina Amorim | Geocode – Catunda et al., 2021 | |
| 4 | Sea surface temperature | SST | °C | Catunda, Maria Carolina Amorim | SST, from UK'37 | linearly interpolated to match SubT in age |
| 5 | Sub-surface temperature | SubT | °C | Catunda, Maria Carolina Amorim | ||
| 6 | Temperature, difference | delta T | °C | Catunda, Maria Carolina Amorim | Calculated | SST-Sub-ST |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2571 data points
Download Data
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