Citation:

nature01297

Name: Magnitude and timing of temperature change in the Indo-Pacific warm pool during deglaciation
Published: 2019-02-22
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Deglaciation; Indonesia; Mg/Ca; Pacific Warm Pool; SST

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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.

Keyword(s):

Deglaciation; Indonesia; Mg/Ca; Pacific Warm Pool; SST

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: (IMAGES IV-IPHIS III) * Basis: * 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

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Age [ka BP]	3 G. ruber δ18O [‰ PDB]	4 G. ruber Mg/Ca [mmol/mol]	5 SST [°C] (Calculated from Mg/Ca ratios ...)	6 SST [°C] (Calculated from Mg/Ca ratios ...)
0.00	0.751	-3.136	0.511	28.9	27.83
0.30	1.102	-3.414	0.510	28.9	27.80
0.40	1.219	-3.201	0.499	28.6	27.55
0.60	1.453	-2.953	0.533	29.3	28.32
1.10	2.038	-3.136	0.502	28.7	27.62
1.30	2.271	-3.377	0.498	28.6	27.52
1.70	2.638	-3.096	0.492	28.4	27.38
3.00	3.704	-3.247	0.506	28.8	27.71
3.40	4.032	-3.302	0.506	28.8	27.71
3.60	4.439	-2.763	0.493	28.5	27.40
3.80	4.859	-2.793	0.494	28.5	27.43
4.00	5.279	-3.424	0.496	28.5	27.47
4.20	5.699	-3.557	0.514	28.9	27.89
4.40	6.119	-3.192	0.529	29.3	28.23
4.60	6.539	-3.175	0.509	28.8	27.78
4.80	6.959	-3.474	0.481	28.2	27.11
5.00	7.379	-2.992	0.550	29.7	28.69
5.30	8.012	-2.885	0.488	28.4	27.28
5.50	8.437	-2.948	0.483	28.3	27.16
5.70	8.863	-2.820	0.524	29.1	28.12
5.90	9.289	-3.194	0.499	28.6	27.55
6.10	9.714	-2.765	0.497	28.6	27.50
6.30	10.140	-2.756	0.506	28.8	27.71
6.50	10.566	-2.577	0.490	28.4	27.33
6.60	10.779	-2.295	0.492	28.4	27.38
6.70	11.211	-2.405	0.501	28.7	27.59
6.80	11.668	-2.312	0.463	27.8	26.67
6.90	12.125	-1.989	0.441	27.2	26.09
6.93	12.262	-1.889	0.471	28.0	26.87
6.96	12.399	-1.870	0.459	27.7	26.56
7.00	12.554	-1.708	0.444	27.3	26.17
7.03	12.650	-1.695	0.447	27.4	26.25
7.06	12.746	-1.674	0.435	27.1	25.93
7.20	13.195	-2.003	0.451	27.5	26.36
7.30	13.515	-2.003	0.485	28.3	27.21
7.40	13.835	-1.782	0.431	27.0	25.82
7.50	14.155	-2.005	0.440	27.2	26.07
7.60	14.476	-1.947	0.432	27.0	25.85
7.70	14.796	-1.639	0.457	27.6	26.51
7.80	15.116	-1.392	0.431	27.0	25.82
7.90	15.436	-1.594	0.400	26.1	24.94
8.10	16.077	-1.468	0.409	26.4	25.21
8.20	16.397	-1.245	0.385	25.7	24.49
8.27	16.621	-1.271	0.399	26.1	24.91
8.40	17.037	-1.324	0.404	26.3	25.06
8.50	17.358	-1.572	0.390	25.9	24.65
8.60	17.678	-0.993	0.392	25.9	24.71
8.70	17.936	-1.240	0.388	25.8	24.59
8.80	18.187	-1.554	0.387	25.8	24.56
8.90	18.438	-1.721	0.391	25.9	24.68
9.00	18.689	-1.632	0.354	24.8	23.51
9.10	18.941	-1.429	0.375	25.4	24.19
9.20	19.192	-1.202	0.368	25.2	23.96
9.30	19.443	-1.528	0.367	25.2	23.93
9.40	19.694	-1.444	0.368	25.2	23.96
9.50	19.945	-1.598	0.366	25.2	23.90
9.60	20.196	-1.279	0.414	26.5	25.35
9.70	20.447	-1.614	0.402	26.2	25.00
9.80	20.699	-1.798	0.360	25.0	23.70
9.90	20.950	-1.633	0.380	25.6	24.34
10.00	21.423	-1.524	0.364	25.1	23.83
10.10	21.951	-1.392	0.368	25.2	23.96
10.20	22.480	-1.441	0.366	25.2	23.90
10.30	23.009	-1.156	0.382	25.6	24.40
10.40	23.537	-1.689	0.411	26.5	25.26
10.50	24.066	-1.610	0.351	24.7	23.41
31.00	109.482	-2.400	0.482	28.2	27.14
31.20	111.318	-2.640	0.442	27.3	26.12
31.40	113.155	-2.416	0.495	28.5	27.45
31.60	114.992	-2.482	0.460	27.7	26.59
31.70	115.910	-2.779	0.460	27.7	26.59
31.80	116.267	-2.811	0.493	28.5	27.40
31.90	116.624
32.00	116.981	-3.009	0.483	28.3	27.16
32.30	118.052	-2.809	0.499	28.6	27.55
32.40	118.408	-3.229	0.522	29.1	28.08
32.50	118.765	-3.056	0.511	28.9	27.83
32.60	119.122	-3.527	0.545	29.6	28.58
32.70	119.479	-3.661	0.524	29.1	28.12
32.80	119.836	-2.902	0.539	29.5	28.45
32.90	120.193	-2.979	0.530	29.3	28.26
33.00	120.550	-3.322	0.577	30.2	29.25
33.10	120.907	-3.038	0.555	29.8	28.80
33.20	121.264	-3.124	0.582	30.3	29.36
33.30	121.621	-2.941	0.613	30.9	29.97
33.40	121.978	-2.950	0.616	30.9	30.02
33.50	122.335	-2.950	0.576	30.2	29.23
33.60	122.692	-3.006	0.626	31.1	30.21
33.70	123.048	-2.883	0.566	30.0	29.03
33.80	123.405	-3.200	0.543	29.5	28.54
33.90	123.762	-3.035	0.540	29.5	28.47
34.00	124.119	-2.904	0.552	29.7	28.73
34.10	124.476	-2.854	0.606	30.8	29.83
34.20	124.833	-2.914	0.584	30.4	29.40
34.30	125.190	-2.930	0.513	28.9	27.87
34.50	127.050	-2.746	0.520	29.1	28.03
34.60	127.980	-2.066	0.500	28.6	27.57
34.70	128.910	-2.117	0.518	29.0	27.99
34.80	129.840	-1.975	0.498	28.6	27.52
34.90	130.366	-1.984	0.486	28.3	27.24
35.00	130.892	-1.751	0.487	28.3	27.26
35.10	131.418	-1.621	0.438	27.2	26.01
35.20	131.944	-1.456	0.485	28.3	27.21
35.30	132.470	-1.504	0.420	26.7	25.52
35.40	132.996	-1.541	0.413	26.5	25.32
35.50	133.522	-1.510	0.428	26.9	25.74
35.70	134.574	-1.407	0.392	25.9	24.71
35.80	135.100	-1.144	0.425	26.8	25.66
35.90	135.613	-1.215	0.393	26.0	24.74
36.00	136.126	-1.230	0.416	26.6	25.41
36.10	136.639	-1.264	0.386	25.8	24.53
36.20	137.151	-1.426	0.397	26.1	24.86
36.30	137.664	-1.075	0.393	26.0	24.74
36.40	138.177	-1.290	0.402	26.2	25.00
36.50	138.690	-1.254	0.383	25.7	24.43
36.60	139.716	-1.358	0.342	24.4	23.10
36.70	140.229	-1.143	0.397	26.1	24.86
36.80	140.741	-1.814	0.364	25.1	23.83
36.90	141.254	-1.580	0.387	25.8	24.56
37.00	141.767	-1.746	0.372	25.4	24.09