Beyond Epica Catalogue
Dust record from the EPICA Dome C ice core, Antarctica, covering 0 to 800 kyr BP
Dust can affect the radiative balance of the atmosphere by absorbing or reflecting incoming solar radiation and it can be a source of micronutrients, such as iron, to the ocean. It has been suggested that production, transport, and deposition of dust is influenced by climatic changes on glacial-interglacial timescales. Here we present a high-resolution aeolian dust record from the EPICA Dome C ice core in East Antarctica, which provides an undisturbed climate sequence over the last eight climatic cycles. We find that there is a significant correlation between dust flux and temperature records during glacial periods that is absent during interglacial periods. Our data suggests that dust flux is increasingly correlated with Antarctic temperature as climate becomes colder. We interpret this as progressive coupling of Antarctic and lower latitudes climate. Limited changes in glacial-interglacial atmospheric transport time Mahowald et al. (1999, doi:10.1029/1999JD900084), Jouzel et al. (2007, doi:10.1126/science.1141038), and Werner et al. (2002, doi:10.1029/2002JD002365) suggest that the sources and lifetime of dust are the major factors controlling the high glacial dust input. We propose that the observed ~25-fold increase in glacial dust flux over all eight glacial periods can be attributed to a strengthening of South American dust sources, together with a longer atmospheric dust particle life-time in the upper troposphere resulting from a reduced hydrological cycle during the ice ages.
Simple
Identification info
- Date (Publication)
- 2008-06-23T16:25:22
- Citation identifier
- https://doi.org/10.1594/PANGAEA.695995
- Citation identifier
- https://doi.pangaea.de/10.1594/PANGAEA.695995
Author
Author
Delmonte, Barbara
Author
Author
Bigler, Matthias
Author
Author
Hutterli, Manuel A
Author
Author
Author
Author
Maggi, Valter
- Presentation form
- Digital table
- Other citation details
- Supplement to: Lambert, Fabrice; Delmonte, Barbara; Petit, Jean-Robert; Bigler, Matthias; Kaufmann, Patrik R; Hutterli, Manuel A; Stocker, Thomas F; Ruth, Urs; Steffensen, Jørgen Peder; Maggi, Valter (2008): Dust-climate couplings over the past 800,000 years from the EPICA Dome C ice core. Nature, 452, 616-619, https://doi.org/10.1038/nature06763
- Website
- https://www.pangaea.de/
- Status
- Completed
- Spatial representation type
- Text, table
- Topic category
-
- Geoscientific information
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Temporal extent
- Time period
- 1993-01-01T00:00:00 2004-12-31T00:00:00
- PANGAEA Project List
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- EPICA
- European Project for Ice Coring in Antarctica
Resource constraints
- Access constraints
- Copyright
- Use constraints
- Copyright
- Other constraints
- CC-BY-3.0: Creative Commons Attribution 3.0 Unported
- Language
- English
- Supplemental Information
- This work is a contribution to the "European Project for Ice Coring in Antarctica" (EPICA), a joint ESF (European Science Foundation)/EC scientific programme, funded by the European Commission and by national contributions from Belgium, Denmark, France, Germany, Italy, the Netherlands, Norway, Sweden, Switzerland and the United Kingdom. We acknowledge long-term financial support by the Swiss NSF, the University of Bern and the Swiss Federal Agency of Energy, and EC Project EPICA-MIS.
Distribution Information
- Distribution format
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- application/zip
- OnLine resource
- https://doi.pangaea.de/10.1594/PANGAEA.695995?format=zip
- OnLine resource
- dust_record_data.nc
Resource lineage
- Statement
- The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data.
- Hierarchy level
- Dataset
Process step
- Description
- EVENT LABEL: EDC (EPICA Dome C) * LATITUDE: -75.100000 * LONGITUDE: 123.350000 * DATE/TIME START: 1993-01-01T00:00:00 * DATE/TIME END: 2004-12-31T00:00:00 * ELEVATION: 3233.0 m * Recovery: 3300 m * LOCATION: Dome C, Antarctica * CAMPAIGN: Dome C * METHOD/DEVICE: Ice drill
- Rationale
- Drill site is 56 km from the site of a previous Dome C core that provided records extending into the last glacial period, and 560 km from the site of the Vostok cores. The completion of the Dome C core was delayed when the first drilling became stuck at 788 m in 1999 (EDC96).
- Time position
- 1993-01-01T00:00:00
Metadata
- Metadata identifier
- urn:uuid/e379fe23-4a1c-488f-8c7b-c4aceebed47e
- Language
- English
Type of resource
- Resource scope
- Dataset
- Metadata linkage
- http://nadc-isp.cnr.it:8091/geonetwork/srv/api/records/e379fe23-4a1c-488f-8c7b-c4aceebed47e
- Date info (Revision)
- 2021-06-23T16:10:44
- Date info (Creation)
- 2021-05-03T04:46:47
Metadata standard
- Title
- ISO 19115-3
Overviews
Re1e755666cbce4673639315253ad57a3.jpg
Spatial extent
N
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W
Provided by
Associated resources
Not available