DOI: 10.5194/cp-14-637-2018
Scopus记录号: 2-s2.0-85047638851
论文题名: Aromatic acids in an Arctic ice core from Svalbard: A proxy record of biomass burning
作者: Grieman M.M. ; Aydin M. ; Isaksson E. ; Schwikowski M. ; Saltzman E.S.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2018
卷: 14, 期: 5 起始页码: 637
结束页码: 651
语种: 英语
Scopus关键词: aerosol
; air mass
; biogenic emission
; biomass burning
; combustion
; ice core
; lignin
; long range transport
; North Atlantic Oscillation
; organic acid
; paleoclimate
; proxy climate record
; wildfire
; Arctic
; Arctic
; Eurasia
; Europe
; Lomonosovfonna
; Siberia
; Spitsbergen
; Svalbard
; Svalbard and Jan Mayen
英文摘要: This study presents vanillic acid and parahydroxybenzoic acid levels in an Arctic ice core from Lomonosovfonna, Svalbard covering the past 800 years. These aromatic acids are likely derived from lignin combustion in wildfires and long-range aerosol transport. Vanillic and para-hydroxybenzoic acid are present throughout the ice core, confirming that these compounds are preserved on millennial timescales. Vanillic and para-hydroxybenzoic acid concentrations in the Lomonosovfonna ice core ranged from below the limits of detection to 0.2 and 0.07 ppb, respectively (1 ppb =1000 ng L-1). Vanillic acid levels are high (maximum of 0.1 ppb) from 1200 to 1400 CE, then gradually decline into the twentieth century. The largest peak in the vanillic acid in the record occurs from 2000 to 2008 CE. In the para-hydrobenzoic acid record, there are three centennialscale peaks around 1300, 1550, and 1650 CE superimposed on a long-term decline in the baseline levels throughout the record. Ten-day air mass back trajectories for a decade of fire seasons (March-November, 2006-2015) indicate that Siberia and Europe are the principle modern source regions for wildfire emissions reaching the Lomonosovfonna site. The Lomonosovfonna data are similar to those from the Eurasian Arctic Akademii Nauk ice core during the early part of the record (1220-1400 CE), but the two ice cores diverge markedly after 1400 CE. This coincides with a shift in North Atlantic climate marked by a change of the North Atlantic Oscillation from a positive to a more negative state. © Author(s) 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109567
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Earth System Science, University of California, Irvine, Irvine, CA 92697-3100, United States; Norwegian Polar Institute Fram Centre, Tromsø, 9296, Norway; Paul Scherrer Institute, Villigen, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
Recommended Citation:
Grieman M.M.,Aydin M.,Isaksson E.,et al. Aromatic acids in an Arctic ice core from Svalbard: A proxy record of biomass burning[J]. Climate of the Past,2018-01-01,14(5)