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| Titel |
Water-soluble organic carbon in snow and ice deposited at Alpine, Greenland, and Antarctic sites: a critical review of available data and their atmospheric relevance |
| VerfasserIn |
M. Legrand, S. Preunkert, B. Jourdain, J. Guilhermet, X. Faïn, I. Alekhina, J. R. Petit |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 9, no. 5 ; Nr. 9, no. 5 (2013-09-16), S.2195-2211 |
| Datensatznummer |
250085225
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| Publikation (Nr.) |
 copernicus.org/cp-9-2195-2013.pdf |
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| Zusammenfassung |
| While it is now recognized that organic matter dominates the present-day
atmospheric aerosol load over continents, its sources remain poorly known.
The studies of organic species or organic fractions trapped in ice cores may
help to overcome this lack of knowledge. Available data on the dissolved (or
total) organic carbon (DOC or TOC) content of snow and ice often appear
largely inconsistent, and, until now, no critical review has been conducted to
understand the causes of these inconsistencies. To draw a more consistent
picture of the organic carbon amount present in solid precipitation that
accumulates on cold glaciers, we here review available data and, when
needed, complete the data set with analyses of selected samples. The
different data sets are then discussed by considering the age (modern versus
pre-industrial, Holocene versus Last glacial Maximum) and type (surface
snow, firn, or ice) of investigated samples, the deployed method, and the
applied contamination control. Finally, the OC (DOC or TOC) levels of
Antarctic, Greenland, and Alpine ice cores are compared and discussed with
respect to natural (biomass burning, vegetation emissions) and anthropogenic
sources (fossil fuel combustion) contributing to atmospheric OC aerosol. |
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