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Wu, Xiner; de Vernal, Anne; Allan, Estelle (2025): Mixed layer depth reconstructions based on dinocyst assemblage data of sediment core MD99-2227 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982632, In: Wu, X et al. (2025): Mixed layer depth reconstructions based on dinocyst assemblage data for 16 Holocene records in the subpolar North Atlantic using the modern analogue technique and weighted averaging partial least squares [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.982394

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Published: 2025-06-16 • DOI registered: 2025-06-17

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Abstract:
Winter mixed layer depth (MLD) was reconstructed from the dinocyst assemblage data of sediment core MD99-2227 using two different approaches: modern analogue technique (MAT) and weighted averaging partial least square (WAPLS) regression and calibration. The n = 1968 modern dinocyst database and the modern MLD climatology of 1981-2010 from the World Ocean Atlas 2018 were used as calibration dataset.
Keyword(s):
Dinocysts; Holocene; mixed-layer depth; Paleoceanographic proxies; reconstruction; subpolar North Atlantic
Supplement to:
Wu, Xiner; de Vernal, Anne; Allan, Estelle (2025): Migration of deep convection center in subpolar North Atlantic around 6 ka suggested by a dinocyst proxy of mixed layer depth. Paleoceanography and Paleoclimatology, 40(6), e2024PA004998, https://doi.org/10.1029/2024PA004998
Related to:
de Vernal, Anne; Hillaire-Marcel, Claude (2006): Provincialism in trends and high frequency changes in the northwest North Atlantic during the Holocene. Global and Planetary Change, 54, 263-290, https://doi.org/10.1016/j.gloplacha.2006.06.023
Wu, Xiner (2025): Mixed layer depth values for the n = 1968 modern dinocyst database [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.982265
Funding:
Fonds de Recherche du Québec – Nature et Technologies (FRQNT), grant/award no. 320994: FRQNT - Nature et technologies
Natural Sciences and Engineering Research Council (NSERC), grant/award no. DG/AdV: NSERC Discovery Grant
Coverage:
Latitude: 58.210667 * Longitude: -48.373000
Date/Time Start: 1999-08-01T00:00:00 * Date/Time End: 1999-08-01T00:00:00
Minimum Elevation: -3460.0 m * Maximum Elevation: -3460.0 m
Event(s):
MD99-2227 (36C, MD27) * Latitude: 58.210667 * Longitude: -48.373000 * Date/Time: 1999-08-01T00:00:00 * Elevation: -3460.0 m * Recovery: 42.96 m * Location: Greenland Rise * Campaign: MD114 (IMAGES V) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Corer (CALYPSO)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 AGEAgeka BPAllan, EstelleGeocode
2 Mixed layer depthMLDmWu, XinerModern analogue technique (MAT)MAT
3 Mixed layer depthMLDmWu, XinerWeighted averaging partial least squares (WA-PLS) regressionWAPLS regression and calibration
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
174 data points

Data

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

1 
Age [ka BP]		2 
MLD [m]
(MAT, Modern analogue techniqu...)		3 
MLD [m]
(WAPLS regression and calibrat...)
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