globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.502022013
论文题名:
Major 20th century changes of the content and chemical speciation of organic carbon archived in Alpine ice cores: Implications for the long-term change of organic aerosol over Europe
作者: Legrand M.; Preunkert S.; May B.; Guilhermet J.; Hoffman H.; Wagenbach D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:9
起始页码: 3879
结束页码: 3890
语种: 英语
Scopus关键词: Aerosols ; Carboxylation ; Chemical speciation ; Military operations ; 20th century ; Dicarboxylates ; Dissolved organic carbon ; Humic-like substances ; Long-term changes ; Long-term trend ; Organic aerosol ; Water-soluble organic carbon ; Ice ; aerosol ; dissolved organic carbon ; fossil fuel ; long-term change ; speciation (chemistry) ; twentieth century ; Europe
英文摘要: Dissolved organic carbon (DOC) and an extended array of organic compounds were investigated in an Alpine ice core covering the 1920-1988 time period. Based on this, a reconstruction was made of the long-term trends of water-soluble organic carbon (WSOC) aerosol in the European atmosphere. It is shown that light mono-and dicarboxylates, humic-like substances, and formaldehyde account together for more than half of the DOC content of ice. This extended chemical speciation of DOC is used to estimate the DOC fraction present in ice that is related to WSOC aerosol and its change over the past. It is suggested that after World War II, the WSOC levels have been enhanced by a factor of 2 and 3 in winter and summer, respectively. In summer, the fossil fuel contribution to the enhancement is estimated to be rather small, suggesting that it arises mainly from an increase in biogenic sources of WSOC. © 2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63486
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: UJF-Grenoble 1/CNRS, Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE), UMR 5183, Grenoble, France; Institut für Umweltphysik, University of Heidelberg, Heidelberg, Germany

Recommended Citation:
Legrand M.,Preunkert S.,May B.,et al. Major 20th century changes of the content and chemical speciation of organic carbon archived in Alpine ice cores: Implications for the long-term change of organic aerosol over Europe[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(9)
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