Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning
Wildfires and their emissions have significant impacts on ecosystems, climate, atmospheric chemistry, and carbon cycling. Well-dated proxy records are needed to study the long-term climatic controls on biomass burning and the associated climate feedbacks. There is a particular lack of information ab...
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fttriple:oai:gotriple.eu:f7PufZbSSI9NWdc9h3cap 2023-05-15T15:00:28+02:00 Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning Grieman, Mackenzie M. Aydin, Murat Fritzsche, Diedrich McConnell, Joseph R. Opel, Thomas Sigl, Michael Saltzman, Eric S. 2018-10-02 https://doi.org/10.5194/cp-13-395-2017 https://cp.copernicus.org/articles/13/395/2017/ en eng doi:10.5194/cp-13-395-2017 10670/1.cy6f1o https://cp.copernicus.org/articles/13/395/2017/ undefined Geographica Helvetica - geography eISSN: 1814-9332 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2018 fttriple https://doi.org/10.5194/cp-13-395-2017 2023-01-22T17:34:38Z Wildfires and their emissions have significant impacts on ecosystems, climate, atmospheric chemistry, and carbon cycling. Well-dated proxy records are needed to study the long-term climatic controls on biomass burning and the associated climate feedbacks. There is a particular lack of information about long-term biomass burning variations in Siberia, the largest forested area in the Northern Hemisphere. In this study we report analyses of aromatic acids (vanillic and para-hydroxybenzoic acids) over the past 2600 years in the Eurasian Arctic Akademii Nauk ice core. These compounds are aerosol-borne, semi-volatile organic compounds derived from lignin combustion. The analyses were made using ion chromatography with electrospray mass spectrometric detection. The levels of these aromatic acids ranged from below the detection limit (0.01 to 0.05 ppb; 1 ppb = 1000 ng L−1) to about 1 ppb, with roughly 30 % of the samples above the detection limit. In the preindustrial late Holocene, highly elevated aromatic acid levels are observed during three distinct periods (650–300 BCE, 340–660 CE, and 1460–1660 CE). The timing of the two most recent periods coincides with the episodic pulsing of ice-rafted debris in the North Atlantic known as Bond events and a weakened Asian monsoon, suggesting a link between fires and large-scale climate variability on millennial timescales. Aromatic acid levels also are elevated during the onset of the industrial period from 1780 to 1860 CE, but with a different ratio of vanillic and para-hydroxybenzoic acid than is observed during the preindustrial period. This study provides the first millennial-scale record of aromatic acids. This study clearly demonstrates that coherent aromatic acid signals are recorded in polar ice cores that can be used as proxies for past trends in biomass burning. Text Arctic ice core North Atlantic Siberia Unknown Arctic Climate of the Past 13 4 395 410 |
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envir geo Grieman, Mackenzie M. Aydin, Murat Fritzsche, Diedrich McConnell, Joseph R. Opel, Thomas Sigl, Michael Saltzman, Eric S. Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning |
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envir geo |
description |
Wildfires and their emissions have significant impacts on ecosystems, climate, atmospheric chemistry, and carbon cycling. Well-dated proxy records are needed to study the long-term climatic controls on biomass burning and the associated climate feedbacks. There is a particular lack of information about long-term biomass burning variations in Siberia, the largest forested area in the Northern Hemisphere. In this study we report analyses of aromatic acids (vanillic and para-hydroxybenzoic acids) over the past 2600 years in the Eurasian Arctic Akademii Nauk ice core. These compounds are aerosol-borne, semi-volatile organic compounds derived from lignin combustion. The analyses were made using ion chromatography with electrospray mass spectrometric detection. The levels of these aromatic acids ranged from below the detection limit (0.01 to 0.05 ppb; 1 ppb = 1000 ng L−1) to about 1 ppb, with roughly 30 % of the samples above the detection limit. In the preindustrial late Holocene, highly elevated aromatic acid levels are observed during three distinct periods (650–300 BCE, 340–660 CE, and 1460–1660 CE). The timing of the two most recent periods coincides with the episodic pulsing of ice-rafted debris in the North Atlantic known as Bond events and a weakened Asian monsoon, suggesting a link between fires and large-scale climate variability on millennial timescales. Aromatic acid levels also are elevated during the onset of the industrial period from 1780 to 1860 CE, but with a different ratio of vanillic and para-hydroxybenzoic acid than is observed during the preindustrial period. This study provides the first millennial-scale record of aromatic acids. This study clearly demonstrates that coherent aromatic acid signals are recorded in polar ice cores that can be used as proxies for past trends in biomass burning. |
format |
Text |
author |
Grieman, Mackenzie M. Aydin, Murat Fritzsche, Diedrich McConnell, Joseph R. Opel, Thomas Sigl, Michael Saltzman, Eric S. |
author_facet |
Grieman, Mackenzie M. Aydin, Murat Fritzsche, Diedrich McConnell, Joseph R. Opel, Thomas Sigl, Michael Saltzman, Eric S. |
author_sort |
Grieman, Mackenzie M. |
title |
Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning |
title_short |
Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning |
title_full |
Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning |
title_fullStr |
Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning |
title_full_unstemmed |
Aromatic acids in a Eurasian Arctic ice core: a 2600-year proxy record of biomass burning |
title_sort |
aromatic acids in a eurasian arctic ice core: a 2600-year proxy record of biomass burning |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-13-395-2017 https://cp.copernicus.org/articles/13/395/2017/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice core North Atlantic Siberia |
genre_facet |
Arctic ice core North Atlantic Siberia |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-13-395-2017 10670/1.cy6f1o https://cp.copernicus.org/articles/13/395/2017/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-13-395-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
4 |
container_start_page |
395 |
op_container_end_page |
410 |
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1766332571901231104 |