Visser, Katherine; Thunell, Robert C; Stott, Lowell D (2019): Magnitude and timing of temperature change in the Indo-Pacific warm pool during deglaciation [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.898714, Supplement to: Visser, K et al. (2003): Magnitude and timing of temperature change in the Indo-Pacific warm pool during deglaciation. Nature, 421(6919), 152-155, https://doi.org/10.1038/nature01297
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Abstract:
Ocean-atmosphere interactions in the tropical Pacific region have a strong influence on global heat and water vapour transport and thus constitute an important component of the climate system1,2. Changes in sea surface temperatures and convection in the tropical Indo-Pacific region are thought to be responsible for the interannual to decadal climate variability observed in extratropical regions1,3, but the role of the tropics in climate changes on millennial and orbital timescales is less clear. Here we analyse oxygen isotopes and Mg/Ca ratios of foraminiferal shells from the Makassar strait in the heart of the Indo-Pacific warm pool, to obtain synchronous estimates of sea surface temperatures and ice volume. We find that sea surface temperatures increased by 3.5-4.0 8C during the last two glacial—interglacial transitions, synchronous with the global increase in atmospheric CO2 and Antarctic warming, but the temperature increase occurred 2,000- 3,000 years before the Northern Hemisphere ice sheets melted. Our observations suggest that the tropical Pacific region plays an important role in driving glacial—interglacial cycles, possibly through a system similar to how El Nin˜o/Southern Oscillation regulates the poleward flux of heat and water vapour.
Coverage:
Latitude: -4.690000 * Longitude: 117.900000
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 37.00 m
Event(s):
MD98-2162 (MD982162) * Latitude: -4.690000 * Longitude: 117.900000 * Elevation: -1855.0 m * Recovery: 55.33 m * Campaign: MD111 (IMAGES IV-IPHIS III) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Visser, Katherine | Geocode | |
| 2 | AGE | Age | ka BP | Visser, Katherine | Geocode | |
| 3 | Globigerinoides ruber, δ18O | G. ruber δ18O | ‰ PDB | Visser, Katherine | ||
| 4 | Globigerinoides ruber, Magnesium/Calcium ratio | G. ruber Mg/Ca | mmol/mol | Visser, Katherine | ||
| 5 | Sea surface temperature | SST | °C | Visser, Katherine | Calculated from Mg/Ca ratios (Anand et al., 2003) | |
| 6 | Sea surface temperature | SST | °C | Visser, Katherine | Calculated from Mg/Ca ratios (Lea et al. 2000) |
Change history:
2021-10-21T08:44:40 – AGE corrected to ka, multiplied by 0.001
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
476 data points