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Arctic Holocene pro...
Arctic Holocene proxy climate database - new approaches to assessing geochronological accuracy and encoding climate variables
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- Sundqvist, Hanna S. (author)
- Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)
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Kaufman, D. S. (author)
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McKay, N. P. (author)
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Balascio, N. L. (author)
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Briner, J. P. (author)
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Cwynar, L. C. (author)
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Sejrup, H. P. (author)
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Seppa, H. (author)
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Subetto, D. A. (author)
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Andrews, J. T. (author)
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Axford, Y. (author)
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Bakke, J. (author)
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Birks, H. J. B. (author)
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Brooks, S. J. (author)
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de Vernal, A. (author)
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Jennings, A. E. (author)
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- Charpentier Ljungqvist, Fredrik (author)
- Stockholms universitet,Historiska institutionen
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Ruehland, K. M. (author)
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Saenger, C. (author)
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Smol, J. P. (author)
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Viau, A. E. (author)
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(creator_code:org_t)
- 2014-08-29
- 2014
- English.
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In: Climate of the Past. - : Copernicus GmbH. - 1814-9324 .- 1814-9332. ; 10:4, s. 1605-1631
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https://doi.org/10.5...
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https://www.clim-pas...
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Abstract
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- We present a systematic compilation of previously published Holocene proxy climate records from the Arctic. We identified 170 sites from north of 58 degrees N latitude where proxy time series extend back at least to 6 cal ka (all ages in this article are in calendar years before present - BP), are resolved at submillennial scale (at least one value every 400 +/- 200 years) and have age models constrained by at least one age every 3000 years. In addition to conventional meta-data for each proxy record (location, proxy type, reference), we include two novel parameters that add functionality to the database. First, climate interpretation is a series of fields that logically describe the specific climate variable(s) represented by the proxy record. It encodes the proxy-climate relation reported by authors of the original studies into a structured format to facilitate comparison with climate model outputs. Second, geochronology accuracy score (chron score) is a numerical rating that reflects the overall accuracy of C-14-based age models from lake and marine sediments. Chron scores were calculated using the original author-reported C-14 ages, which are included in this database. The database contains 320 records (some sites include multiple records) from six regions covering the circumpolar Arctic: Fennoscandia is the most densely sampled region (31% of the records), whereas only five records from the Russian Arctic met the criteria for inclusion. The database contains proxy records from lake sediment (60 %), marine sediment (32 %), glacier ice (5 %), and other sources. Most (61 %) reflect temperature (mainly summer warmth) and are primarily based on pollen, chironomid, or diatom assemblages. Many (15 %) reflect some aspect of hydroclimate as inferred from changes in stable isotopes, pollen and diatom assemblages, humification index in peat, and changes in equilibrium-line altitude of glaciers. This comprehensive database can be used in future studies to investigate the spatio-temporal pattern of Arctic Holocene climate changes and their causes. The Arctic Holocene data set is available from NOAA Paleoclimatology.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
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- ref (subject category)
- art (subject category)
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- By the author/editor
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Sundqvist, Hanna ...
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Kaufman, D. S.
-
McKay, N. P.
-
Balascio, N. L.
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Briner, J. P.
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Cwynar, L. C.
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show more...
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Sejrup, H. P.
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Seppa, H.
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Subetto, D. A.
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Andrews, J. T.
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Axford, Y.
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Bakke, J.
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Birks, H. J. B.
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Brooks, S. J.
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de Vernal, A.
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Jennings, A. E.
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Charpentier Ljun ...
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Ruehland, K. M.
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Saenger, C.
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Smol, J. P.
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Viau, A. E.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Climate of the P ...
- By the university
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Stockholm University