Citation:

PANGAEA.759566

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Abstract:

Organic geochemical analyses of marine surface sediments from the continental margins of East Greenland and West Spitsbergen provide for a biomarker-based estimate of recent sea ice conditions in the northern North Atlantic. By means of the sea ice proxy IP25 and phytoplankton derived biomarkers (e.g. brassicasterol, dinosterol) we reconstruct sea ice and sea surface conditions, respectively. The combination of IP25 with a phytoplankton marker (in terms of a phytoplankton marker-IP25 index; PIP25) proves highly valuable to properly interpret the sea ice proxy signal as an under- or overestimation of sea ice coverage can be circumvented. A comparison of this biomarker-based assessment of the sea ice distribution in the study area with (1) modern remote sensing data and (2) numerical modelling results reveals a good agreement between organic geochemical, satellite and modelling observations. The reasonable simulation of modern sea ice conditions by means of a regional ocean-sea ice model demonstrates the feasibility to effectively integrate the complex atmospheric and oceanic circulation features as they prevail in the study area. The good correlation between modelled sea ice parameters and the biomarker-based estimate of sea ice coverage substantiates that linking proxy and model data occurs to be a promising concept in terms of a cross-evaluation. This combinatory approach may provide a first step towards quantitative sea ice reconstructions by means of IP25. Future IP25 studies on marine surface sediments from the Arctic realm, however, are recommended to extend and validate this new attempt of using IP25 in combination with a phytoplankton marker as a quantitative measure for sea ice reconstructions.

Related to:

Müller, Juliane; Wagner, Axel; Fahl, Kirsten; Stein, Ruediger; Prange, Matthias; Lohmann, Gerrit (2011): Towards quantitative sea ice reconstructions in the northern North Atlantic: A combined biomarker and numerical modelling approach. Earth and Planetary Science Letters, 306, 137-148, https://doi.org/10.1016/j.epsl.2011.04.011

Project(s):

Integrierte Analyse zwischeneiszeitlicher Klimadynamik (INTERDYNAMIK)

Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)

Funding:

German Research Foundation (DFG), grant/award no. 25575884 : Integrierte Analyse zwischeneiszeitlicher Klimadynamik

Coverage:

Median Latitude: 74.174122 * Median Longitude: -7.725987 * South-bound Latitude: 61.525800 * West-bound Longitude: -39.373800 * North-bound Latitude: 79.130000 * East-bound Longitude: 15.881667

Date/Time Start: 1994-09-03T22:51:00 * Date/Time End: 2003-08-30T05:49:00

Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m

Event(s):

PS57/127-1 * Latitude Start: 79.033333 * Longitude Start: 10.510000 * Latitude End: 79.036667 * Longitude End: 10.501667 * Date/Time Start: 2000-07-25T20:35:00 * Date/Time End: 2000-07-25T20:55:00 * Elevation Start: -307.0 m * Elevation End: -310.0 m * Location: North Greenland Sea * Campaign: (PS57 ARKTIEF) * Basis: * Method/Device: MultiCorer (MUC)

PS57/130-1 * Latitude Start: 77.783333 * Longitude Start: 9.680000 * Latitude End: 77.618333 * Longitude End: 11.536667 * Date/Time Start: 2000-07-26T07:07:00 * Date/Time End: 2000-07-26T11:20:00 * Elevation Start: -1046.0 m * Elevation End: -230.0 m * Location: North Greenland Sea * Campaign: (PS57 ARKTIEF) * Basis: * Method/Device: MultiCorer (MUC) * Comment: MUC,CTD

PS57/131-2 * Latitude Start: 77.168333 * Longitude Start: 11.100000 * Latitude End: 77.100000 * Longitude End: 11.021667 * Date/Time Start: 2000-07-26T14:23:00 * Date/Time End: 2000-07-26T16:28:00 * Elevation Start: -1088.0 m * Elevation End: -1250.0 m * Location: North Greenland Sea * Campaign: (PS57 ARKTIEF) * Basis: * Method/Device: MultiCorer (MUC)

Comment:

For further details on the total organic carbon data cited in the article we refer to the data set entries by Kierdorf (2006) doi:10.1594/PANGAEA.499864 and Birgel and Stein (2004) doi:10.1594/PANGAEA.191089. Dataset has been reformated after discussion with the PI.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Müller, Juliane
2	Location of event	Location		Müller, Juliane
3	Latitude of event	Latitude		Müller, Juliane
4	Longitude of event	Longitude		Müller, Juliane
5	Elevation of event	Elevation	m	Müller, Juliane
6	DEPTH, sediment/rock	Depth sed	m	Müller, Juliane		Geocode
7	2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane per unit sediment mass	IP25/sed	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
8	2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon	IP25/TOC	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
9	24-Methylcholesta-5,22E-dien-3beta-ol per unit sediment mass	Brassicasterol/sed	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
10	24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon	Brassicasterol/TOC	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
11	4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol per unit sediment mass	Dinosterol/sed	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
12	4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon	Dinosterol/TOC	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
13	n-Alkane C15	C15	ng/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
14	n-Alkane C15, per unit mass total organic carbon	C15/TOC	ng/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
15	n-Alkane C17	C17	ng/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
16	n-Alkane C17, per unit mass total organic carbon	C17/TOC	ng/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
17	n-Alkane C19	C19	ng/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
18	n-Alkane C19, per unit mass total organic carbon	C19/TOC	ng/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
19	Short-chain n-alkanes, C15H32+C17H36+C19H40 per unit sediment mass	C15+C17+C19/sed	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
20	Short-chain n-alkanes, C15H32+C17H36+C19H40, per unit mass total organic carbon	C15+C17+C19 TOC	µg/g	Müller, Juliane	Gas chromatography - Mass spectrometry (GC-MS)
21	Phytoplankton biomarker Brassicasterol IP25 index	PBIP25		Müller, Juliane	Calculated, see reference(s)	PBIP25 = IP25/(IP25 + (B*0.0138))
22	Phytoplankton biomarker Dinosterol IP25 index	PDIP25		Müller, Juliane	Calculated, see reference(s)	PDIP25 = IP25/(IP25 + (D*0.0674))
23	Phytoplankton biomarker short-chain n-alkanes IP25 index	PAlkIP25		Müller, Juliane	Calculated, see reference(s)	PAlkIP25 = IP25/(IP25 + (Alk*0.0364))

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

748 data points

Data

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

1 Event	2 Location	3 Latitude	4 Longitude	5 Elevation [m]	7 IP25/sed [µg/g]	8 IP25/TOC [µg/g]	9 Brassicasterol/sed [µg/g]	10 Brassicasterol/TOC [µg/g]	11 Dinosterol/sed [µg/g]	12 Dinosterol/TOC [µg/g]	13 C15 [ng/g]	14 C15/TOC [ng/g]	15 C17 [ng/g]	16 C17/TOC [ng/g]	17 C19 [ng/g]	18 C19/TOC [ng/g]	19 C15+C17+C19/sed [µg/g]	20 C15+C17+C19 TOC [µg/g]	21 PBIP25	22 PDIP25	23 PAlkIP25
PS57/127-1	North Greenland Sea	79.0333	10.5100	-307	0.0142	0.7568	4.3799	234.2191	0.8816	47.1459	241.5	12913.9	420.6	22490.5	374.2	20009.8	1.0362	55.4142	0.1897	0.1924	0.2728
PS57/130-1	North Greenland Sea	77.7833	9.6800	-1046	0.0073	0.8543	0.9332	108.5152	0.2199	25.5676	443.9	51614.4	443.5	51570.4	434.2	50489.7	1.3216	153.6745	0.3632	0.3314	0.1325
PS57/131-2	North Greenland Sea	77.1683	11.1000	-1088	0.0049	0.5924	1.0734	129.3277	0.2179	26.2524	474.1	57119.4	457.2	55085.7	457.3	55100.5	1.3886	167.3056	0.2492	0.2508	0.0887
PS57/136-2	North Greenland Sea	77.8100	15.8817	-66	0.0046	0.2766	1.5683	93.3532	0.1359	8.0920	927.1	55184.7	1022.2	60842.7	1766.9	105172.9	3.7162	221.2002	0.1768	0.3365	0.0332
PS57/137-2	North Greenland Sea	77.7700	15.0650	-105	0.0087	0.4109	2.1189	100.4209	0.2987	14.1541	837.8	39704.3	868.2	41146.4	985.5	46705.7	2.6914	127.5563	0.2287	0.3011	0.0813
PS57/138-1	North Greenland Sea	76.6817	12.9950	-1369	0.0047	0.5429	0.5514	63.3817	0.1494	17.1752	611.5	70284.0	542.2	62323.2	649.0	74600.2	1.8027	207.2074	0.3830	0.3192	0.0671
PS57/145-1	North Greenland Sea	76.3350	13.9283	-1026	0.0021	0.1747	1.0179	85.5420	0.2015	16.9304	458.6	38541.0	483.6	40641.6	435.6	36603.3	1.3779	115.7859	0.1289	0.1328	0.0398
PS57/166-2	North Greenland Sea	79.1300	4.8930	-1495	0.0086	0.6705	1.2958	100.4509	0.2730	21.1649	54.9	4256.5	212.3	16460.5	218.9	16970.4	0.4862	37.6875	0.3260	0.3197	0.3283
PS62/002-3	Greenland Sea	61.7947	-39.3738	-1928	0.0000	0.0000	0.4029	201.4535	0.0615	30.7732	3.4	1715.7	12.4	6198.7	11.3	5663.5	0.0272	13.5779	0.0000	0.0000	0.0000
PS62/003-3	Greenland Sea	61.7010	-39.0676	-2192	0.0000	0.0000	1.5786	686.3299	0.1681	73.1040	7.2	3127.6	14.8	6436.9	17.3	7532.3	0.0393	17.0968	0.0000	0.0000	0.0000
PS62/004-2	Greenland Sea	61.5258	-38.1232	-2564	0.0000	0.0000	0.4962	134.1180	0.1067	28.8270	13.7	3690.4	17.0	4587.5	15.4	4168.3	0.0461	12.4462	0.0000	0.0000	0.0000
PS62/012-2	Greenland Sea	64.6243	-31.6933	-2431	0.0000	0.0000	0.2555	111.0861	0.0440	19.1356	12.8	5579.7	16.3	7100.5	12.3	5357.1	0.0415	18.0373	0.0000	0.0000	0.0000
PS62/015-4	Iceland Sea	67.9307	-25.4291	-1013	0.0229	3.8836	0.7977	135.2055	0.2339	39.6397	44.7	7584.5	53.0	8979.7	42.1	7132.1	0.1398	23.6964	0.6755	0.5924	0.8183
PS62/017-1	Iceland Sea	67.8508	-24.5820	-1502	0.0255	4.1110	1.4508	234.0048	0.2710	43.7065	65.6	10574.4	69.3	11185.4	57.9	9341.6	0.1928	31.1014	0.5601	0.5826	0.7841
PS62/020-1	North Greenland Sea	70.9989	-18.9151	-1374	0.0166	2.5859	0.7462	116.6009	0.1412	22.0614	84.9	13262.0	95.0	14838.8	80.2	12531.1	0.2600	40.6320	0.6164	0.6349	0.6362
PS62/022-3	North Greenland Sea	72.4906	-12.6063	-527	0.0117	1.6483	1.0834	152.5861	0.1959	27.5976	111.6	15712.6	111.1	15650.5	91.4	12869.9	0.3141	44.2329	0.4391	0.4698	0.5059
PS62/026-3	North Greenland Sea	74.3320	-8.2130	-3341	0.0072	0.8301	0.8508	97.7911	0.1560	17.9270	85.0	9764.6	144.4	16602.5	140.9	16194.8	0.3703	42.5619	0.3808	0.4072	0.3489
PS62/027-1	North Greenland Sea	74.8240	-7.0080	-3510	0.0063	0.8229	0.7215	93.6997	0.1302	16.9133	68.0	8837.5	88.4	11479.6	85.2	11067.8	0.2417	31.3849	0.3889	0.4192	0.4187
PS62/028-1	North Greenland Sea	74.8490	-6.9150	-3477	0.0048	0.6994	0.6568	95.1844	0.1163	16.8619	54.6	7908.2	89.1	12907.7	84.4	12225.0	0.2280	33.0409	0.3475	0.3810	0.3677
PS62/029-2	North Greenland Sea	74.7990	-7.0840	-3471	0.0000	0.0000	0.4540	70.9317	0.1015	15.8627	11.1	1742.1	62.0	9680.7	81.0	12659.1	0.1541	24.0820	0.0000	0.0000	0.0000
PS62/038-1	North Greenland Sea	74.7670	-5.0260	-3603	0.0000	0.0000	0.2388	85.3009	0.0421	15.0253	6.6	2371.6	23.5	8400.6	32.7	11684.6	0.0629	22.4567	0.0000	0.0000	0.0000
PS62/041-1	North Greenland Sea	74.6840	-5.0120	-3602	0.0000	0.0000	0.6824	101.8459	0.1186	17.6991	33.5	5001.3	74.6	11134.8	86.5	12915.4	0.1946	29.0514	0.0000	0.0000	0.0000
PS62/044-1	North Greenland Sea	74.7901	-5.6937	-3558	0.0048	0.6123	0.6554	84.0221	0.1391	17.8303	32.7	4189.7	91.5	11730.3	91.9	11781.4	0.2161	27.7014	0.3456	0.3375	0.3778
PS62/046-3	North Greenland Sea	74.8080	-8.1520	-3395	0.0065	0.8668	0.7638	101.8364	0.1762	23.4925	126.4	16853.5	106.1	14141.7	95.5	12736.9	0.3280	43.7320	0.3815	0.3538	0.3525
PS62/048-1	North Greenland Sea	74.8410	-8.1420	-3458	0.0070	0.9292	0.8947	119.2960	0.1445	19.2628	63.7	8499.4	90.2	12027.9	88.8	11834.7	0.2427	32.3621	0.3608	0.4172	0.4410
PS62/050-1	North Greenland Sea	74.8670	-8.1540	-3383	0.0068	0.9693	0.6686	95.5167	0.1478	21.1204	41.9	5984.4	76.6	10936.6	83.7	11953.5	0.2021	28.8746	0.4238	0.4051	0.4798
PS64/487-1	North Greenland Sea	76.1490	-17.2830	-234	0.0339	6.4022	0.3861	72.8568	0.1317	24.8559	5.0	949.9	24.5	4617.9	22.3	4207.7	0.0518	9.7756	0.8643	0.7926	0.9473
PS64/488-1	North Greenland Sea	76.1828	-15.1810	-320	0.0214	2.4336	0.3119	35.4444	0.1065	12.0969	29.7	3374.2	68.1	7734.8	49.7	5646.8	0.1475	16.7558	0.8326	0.7490	0.7996
PS64/489-1	North Greenland Sea	76.2356	-11.0017	-315	0.0122	2.7736	0.3424	77.8092	0.0714	16.2328	10.6	2408.0	33.3	7559.1	30.6	6955.1	0.0745	16.9222	0.7209	0.7171	0.8183
PS64/490-1	North Greenland Sea	76.3970	-9.9913	-264	0.0094	3.4734	0.2348	86.9501	0.0770	28.5199	13.4	4957.3	34.0	12591.6	28.3	10485.7	0.0757	28.0345	0.7432	0.6437	0.7729
PS64/504-1	North Greenland Sea	75.7209	-8.0882	-2324	0.0048	1.2328	0.2476	63.4928	0.0718	18.4149	12.1	3107.2	55.4	14198.8	59.7	15310.9	0.1272	32.6169	0.5845	0.4983	0.5094
PS64/508-1	North Greenland Sea	75.9817	-9.1974	-1087	0.0059	1.4804	0.1213	30.3326	0.0408	10.1971	9.4	2344.7	45.4	11346.4	53.1	13274.2	0.1079	26.9653	0.7796	0.6829	0.6013
PS64/511-1	North Greenland Sea	76.1658	-10.0127	-288	0.0086	1.9564	0.2955	67.1526	0.0764	17.3669	7.3	1670.1	25.5	5787.8	26.6	6048.0	0.0594	13.5060	0.6786	0.6257	0.7992
PS64/516-1	North Greenland Sea	76.4749	-11.4143	-314	0.0085	1.3761	0.3386	54.6132	0.0885	14.2734	1.7	280.0	20.6	3320.5	29.6	4769.2	0.0519	8.3697	0.6461	0.5885	0.8187
PS64/528-1	North Greenland Sea	75.5895	-7.5765	-3187	0.0038	0.6632	0.1956	33.7259	0.0528	9.1030	9.5	1635.4	39.5	6806.4	50.4	8694.2	0.0994	17.1360	0.5876	0.5194	0.5153
PS64/531-1	North Greenland Sea	75.7817	-8.3472	-2023	0.0070	1.2894	0.3020	55.9298	0.1024	18.9592	40.4	7483.7	99.6	18446.7	86.3	15981.6	0.2263	41.9120	0.6255	0.5022	0.4580
PS64/573-1	North Greenland Sea	74.7650	-16.7318	-388	0.0277	2.7182	0.6101	59.8113	0.2028	19.8849	51.5	5048.7	95.1	9320.6	72.1	7071.2	0.2187	21.4405	0.7671	0.6698	0.7769
PS64/582-1	North Greenland Sea	74.4423	-14.1948	-589	0.0100	2.2782	0.2872	65.2797	0.0877	19.9258	26.9	6105.7	47.7	10834.5	39.9	9067.4	0.1144	26.0075	0.7166	0.6291	0.7064
PS64/583-1	North Greenland Sea	74.4066	-13.9022	-1391	0.0075	1.4651	0.2478	48.5909	0.0696	13.6502	64.4	12630.6	82.0	16085.9	67.9	13311.2	0.2143	42.0277	0.6860	0.6143	0.4892
PS2630-7	East Greenland Sea	73.1600	-18.0683	-287	0.0157	4.8908	0.4072	127.2378	0.1050	32.8104	15.8	4922.6	38.6	12060.1	31.7	9900.5	0.0860	26.8833	0.7358	0.6886	0.8333
PS2642-2	Kempe Fjord, East Greenland	72.7900	-25.8217	-759	0.0085	8.4730	0.2176	217.6262	0.0518	51.7952	0.7	672.0	6.4	6357.7	9.5	9456.9	0.0165	16.4866	0.7383	0.7082	0.9339
PS2648-3	Hurry Inlet, East Greenland	70.5250	-22.5100	-109	0.0260	3.7703	1.3958	202.2883	0.2194	31.8015	151.7	21979.8	244.9	35486.0	180.7	26185.9	0.5772	83.6517	0.5746	0.6375	0.5532
PS2651-3	Ø Fjord, East Greenland	71.1500	-25.5417	-773	0.0036	2.6008	0.3519	251.3332	0.0894	63.8843	2.8	1968.9	11.2	8000.6	12.3	8758.2	0.0262	18.7276	0.4285	0.3766	0.7923
PS2654-6	Ø Fjord, East Greenland	70.9217	-26.5833	-942	0.0046	3.5107	0.3050	234.6502	0.0859	66.1056	1.9	1430.6	9.3	7164.6	7.3	5621.1	0.0185	14.2163	0.5202	0.4407	0.8715