A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia
The Amazon Basin is one of the major contributors to global biomass burning emissions. However, regional paleofire trends remain particularly unknown. Due to their proximity to the Amazon Basin, Andean ice cores are suitable to reconstruct paleofire trends in South America and improve our understand...
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ftdoajarticles:oai:doaj.org/article:f8516f198d96453ea6b789e705908588 2023-05-15T16:38:56+02:00 A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia D. Osmont M. Sigl A. Eichler T. M. Jenk M. Schwikowski 2019-03-01T00:00:00Z https://doi.org/10.5194/cp-15-579-2019 https://doaj.org/article/f8516f198d96453ea6b789e705908588 EN eng Copernicus Publications https://www.clim-past.net/15/579/2019/cp-15-579-2019.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-15-579-2019 1814-9324 1814-9332 https://doaj.org/article/f8516f198d96453ea6b789e705908588 Climate of the Past, Vol 15, Pp 579-592 (2019) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2019 ftdoajarticles https://doi.org/10.5194/cp-15-579-2019 2023-01-08T01:25:09Z The Amazon Basin is one of the major contributors to global biomass burning emissions. However, regional paleofire trends remain particularly unknown. Due to their proximity to the Amazon Basin, Andean ice cores are suitable to reconstruct paleofire trends in South America and improve our understanding of the complex linkages between fires, climate and humans. Here we present the first refractory black carbon (rBC) ice-core record from the Andes as a proxy for biomass burning emissions in the Amazon Basin, derived from an ice core drilled at 6300 m a.s.l. from the Illimani glacier in the Bolivian Andes and spanning the entire Holocene back to the last deglaciation 13 000 years ago. The Illimani rBC record displays a strong seasonality with low values during the wet season and high values during the dry season due to the combination of enhanced biomass burning emissions in the Amazon Basin and less precipitation at the Illimani site. Significant positive (negative) correlations were found with reanalyzed temperature (precipitation) data for regions in eastern Bolivia and western Brazil characterized by substantial fire activity. rBC long-term trends indirectly reflect regional climatic variations through changing biomass burning emissions as they show higher (lower) concentrations during warm–dry (cold–wet) periods, in line with climate variations such as the Younger Dryas, the 8.2 ka event, the Holocene Climatic Optimum, the Medieval Warm Period and the Little Ice Age. The highest rBC concentrations of the entire record occurred during the Holocene Climatic Optimum between 7000 and 3000 BCE, suggesting that this exceptionally warm and dry period caused high levels of biomass burning activity, unprecedented in the context of the past 13 000 years. Recent rBC levels, rising since 1730 CE in the context of increasing temperatures and deforestation, are similar to those of the Medieval Warm Period. No decrease in fire activity was observed in the 20th century, in contradiction to global biomass burning ... Article in Journal/Newspaper ice core Directory of Open Access Journals: DOAJ Articles Climate of the Past 15 2 579 592 |
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English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 D. Osmont M. Sigl A. Eichler T. M. Jenk M. Schwikowski A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
The Amazon Basin is one of the major contributors to global biomass burning emissions. However, regional paleofire trends remain particularly unknown. Due to their proximity to the Amazon Basin, Andean ice cores are suitable to reconstruct paleofire trends in South America and improve our understanding of the complex linkages between fires, climate and humans. Here we present the first refractory black carbon (rBC) ice-core record from the Andes as a proxy for biomass burning emissions in the Amazon Basin, derived from an ice core drilled at 6300 m a.s.l. from the Illimani glacier in the Bolivian Andes and spanning the entire Holocene back to the last deglaciation 13 000 years ago. The Illimani rBC record displays a strong seasonality with low values during the wet season and high values during the dry season due to the combination of enhanced biomass burning emissions in the Amazon Basin and less precipitation at the Illimani site. Significant positive (negative) correlations were found with reanalyzed temperature (precipitation) data for regions in eastern Bolivia and western Brazil characterized by substantial fire activity. rBC long-term trends indirectly reflect regional climatic variations through changing biomass burning emissions as they show higher (lower) concentrations during warm–dry (cold–wet) periods, in line with climate variations such as the Younger Dryas, the 8.2 ka event, the Holocene Climatic Optimum, the Medieval Warm Period and the Little Ice Age. The highest rBC concentrations of the entire record occurred during the Holocene Climatic Optimum between 7000 and 3000 BCE, suggesting that this exceptionally warm and dry period caused high levels of biomass burning activity, unprecedented in the context of the past 13 000 years. Recent rBC levels, rising since 1730 CE in the context of increasing temperatures and deforestation, are similar to those of the Medieval Warm Period. No decrease in fire activity was observed in the 20th century, in contradiction to global biomass burning ... |
format |
Article in Journal/Newspaper |
author |
D. Osmont M. Sigl A. Eichler T. M. Jenk M. Schwikowski |
author_facet |
D. Osmont M. Sigl A. Eichler T. M. Jenk M. Schwikowski |
author_sort |
D. Osmont |
title |
A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia |
title_short |
A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia |
title_full |
A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia |
title_fullStr |
A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia |
title_full_unstemmed |
A Holocene black carbon ice-core record of biomass burning in the Amazon Basin from Illimani, Bolivia |
title_sort |
holocene black carbon ice-core record of biomass burning in the amazon basin from illimani, bolivia |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/cp-15-579-2019 https://doaj.org/article/f8516f198d96453ea6b789e705908588 |
genre |
ice core |
genre_facet |
ice core |
op_source |
Climate of the Past, Vol 15, Pp 579-592 (2019) |
op_relation |
https://www.clim-past.net/15/579/2019/cp-15-579-2019.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-15-579-2019 1814-9324 1814-9332 https://doaj.org/article/f8516f198d96453ea6b789e705908588 |
op_doi |
https://doi.org/10.5194/cp-15-579-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
2 |
container_start_page |
579 |
op_container_end_page |
592 |
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1766029285196300288 |