Carbonaceous matter deposition in the high glacial regions of the Tibetan Plateau

Chaoliu Li, Pengfei Chen, Shichang Kang, Fangping Yan, Xiaofei Li, Bin Qu, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Carbonaceous matter at glacial region plays important role in river ecosystems fed by glacier and albedo reduction of glacier surface. However, currently, limited knowledge are available on the carbonaceous matter within the glacial region of the Tibetan Plateau (TP). In this study, the data from six snowpits in the glacial region across the TP were reported. The results showed that dissolved organic carbon (DOC) concentrations of snowpit samples of the TP were comparable to those of European Alps and the Arctic. The ratio of DOC to carbonaceous matter (40.25 ± 8.98%) was lower than that of Alpine glaciers, thus indicating greater particulate carbon content in the TP glacial region. In addition, the DOC was significantly correlated with insoluble particulate carbon (IPC), indicating that IPC and DOC likely came from the same sources. Spatially, the DOC concentration decreased from the north (0.42 ± 0.29 mg-C L-1) to the south TP (0.15 ± 0.06 mg-C L-1), which was consistent with variations in the distribution of dust storm on the TP. Principal component analysis of major ions and DOC showed that mineral dust contributed the major part of DOC, followed by biogenic sources such as agriculture and livestock. Finally, based on DOC concentrations and precipitation amounts at different periods, the mean annul flux of DOC in the glacial region of the TP was calculated to be 0.11 ± 0.05 g-C m-2 yr-1.

Original languageEnglish
Pages (from-to)203-208
Number of pages6
JournalAtmospheric Environment
Volume141
DOIs
Publication statusPublished - 1 Sept 2016
Externally publishedYes

Keywords

  • Carbonaceous matter
  • Dissolved organic carbon
  • Flux
  • Glacier
  • The Tibetan Plateau

ASJC Scopus subject areas

  • General Environmental Science
  • Atmospheric Science

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