Coal-Derived Rates of Atmospheric Dust Deposition During the Permian
Despite widespread evidence for atmospheric dust deposition prior to the Quaternary, quantitative rate data remains sparse. As dust influences both climate and biological productivity, the absence of quantitative dust data limits the comprehensiveness of models of pre-Quaternary climate and biogeoch...
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ftuhipublicatio:oai:pure.atira.dk:publications/15c12375-f165-4dfa-8ca0-e9b2f3a8a767 2024-06-23T07:47:26+00:00 Coal-Derived Rates of Atmospheric Dust Deposition During the Permian Marshall, Christopher Large, David J. 2016-03-31 https://pure.uhi.ac.uk/en/publications/15c12375-f165-4dfa-8ca0-e9b2f3a8a767 https://doi.org/10.1016/j.gr.2015.10.002 eng eng https://pure.uhi.ac.uk/en/publications/15c12375-f165-4dfa-8ca0-e9b2f3a8a767 info:eu-repo/semantics/closedAccess Marshall , C & Large , D J 2016 , ' Coal-Derived Rates of Atmospheric Dust Deposition During the Permian ' , Gondwana Research , vol. 31 , pp. 20-29 . https://doi.org/10.1016/j.gr.2015.10.002 Permian Pangea Dust Coal Atmospheric deposition article 2016 ftuhipublicatio https://doi.org/10.1016/j.gr.2015.10.002 2024-05-27T23:56:27Z Despite widespread evidence for atmospheric dust deposition prior to the Quaternary, quantitative rate data remains sparse. As dust influences both climate and biological productivity, the absence of quantitative dust data limits the comprehensiveness of models of pre-Quaternary climate and biogeochemical cycles. Here, we propose that inorganic matter contained in coal primarily records atmospheric dust deposition. To test this, we use the average concentration of inorganic matter in Permian coal to map global patterns and deposition rates of atmospheric dust over Pangea. The dust accumulation rate is calculated assuming Permian peat carbon accumulation rates in temperate climates were similar to Holocene rates and accounting for the loss of carbon during coalification. Coal-derived rates vary from 0.02 to 25 g m− 2 year− 1, values that fall within the present-day global range. A well-constrained East–West pattern of dust deposition corresponding to expected palaeoclimate gradients extends across Gondwana with maximum dust deposition rates occurring close to arid regions. A similar pattern is partially defined over the northern hemisphere. Patterns are consistent with the presence of two large global dust plumes centred on the tropics. The spatial patterns of dust deposition were also compared to dust cycle simulations for the Permian made with the Community Climate System Model version 3 (CCSM3). Key differences between the simulations and the coal data are the lack of evidence for an Antarctic dust source, higher than expected dust deposition over N and S China and greater dust deposition rates over Western Gondwana. This new coal-based dust accumulation rate data expands the pre-Neogene quantitative record of atmospheric dust and can help to inform and validate models of global circulation and biogeochemical cycles over the past 350 Myr. Article in Journal/Newspaper Antarc* Antarctic University of the Highlands and Islands: Research Database of UHI Antarctic Gondwana Research 31 20 29 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Permian Pangea Dust Coal Atmospheric deposition |
spellingShingle |
Permian Pangea Dust Coal Atmospheric deposition Marshall, Christopher Large, David J. Coal-Derived Rates of Atmospheric Dust Deposition During the Permian |
topic_facet |
Permian Pangea Dust Coal Atmospheric deposition |
description |
Despite widespread evidence for atmospheric dust deposition prior to the Quaternary, quantitative rate data remains sparse. As dust influences both climate and biological productivity, the absence of quantitative dust data limits the comprehensiveness of models of pre-Quaternary climate and biogeochemical cycles. Here, we propose that inorganic matter contained in coal primarily records atmospheric dust deposition. To test this, we use the average concentration of inorganic matter in Permian coal to map global patterns and deposition rates of atmospheric dust over Pangea. The dust accumulation rate is calculated assuming Permian peat carbon accumulation rates in temperate climates were similar to Holocene rates and accounting for the loss of carbon during coalification. Coal-derived rates vary from 0.02 to 25 g m− 2 year− 1, values that fall within the present-day global range. A well-constrained East–West pattern of dust deposition corresponding to expected palaeoclimate gradients extends across Gondwana with maximum dust deposition rates occurring close to arid regions. A similar pattern is partially defined over the northern hemisphere. Patterns are consistent with the presence of two large global dust plumes centred on the tropics. The spatial patterns of dust deposition were also compared to dust cycle simulations for the Permian made with the Community Climate System Model version 3 (CCSM3). Key differences between the simulations and the coal data are the lack of evidence for an Antarctic dust source, higher than expected dust deposition over N and S China and greater dust deposition rates over Western Gondwana. This new coal-based dust accumulation rate data expands the pre-Neogene quantitative record of atmospheric dust and can help to inform and validate models of global circulation and biogeochemical cycles over the past 350 Myr. |
format |
Article in Journal/Newspaper |
author |
Marshall, Christopher Large, David J. |
author_facet |
Marshall, Christopher Large, David J. |
author_sort |
Marshall, Christopher |
title |
Coal-Derived Rates of Atmospheric Dust Deposition During the Permian |
title_short |
Coal-Derived Rates of Atmospheric Dust Deposition During the Permian |
title_full |
Coal-Derived Rates of Atmospheric Dust Deposition During the Permian |
title_fullStr |
Coal-Derived Rates of Atmospheric Dust Deposition During the Permian |
title_full_unstemmed |
Coal-Derived Rates of Atmospheric Dust Deposition During the Permian |
title_sort |
coal-derived rates of atmospheric dust deposition during the permian |
publishDate |
2016 |
url |
https://pure.uhi.ac.uk/en/publications/15c12375-f165-4dfa-8ca0-e9b2f3a8a767 https://doi.org/10.1016/j.gr.2015.10.002 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Marshall , C & Large , D J 2016 , ' Coal-Derived Rates of Atmospheric Dust Deposition During the Permian ' , Gondwana Research , vol. 31 , pp. 20-29 . https://doi.org/10.1016/j.gr.2015.10.002 |
op_relation |
https://pure.uhi.ac.uk/en/publications/15c12375-f165-4dfa-8ca0-e9b2f3a8a767 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.gr.2015.10.002 |
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Gondwana Research |
container_volume |
31 |
container_start_page |
20 |
op_container_end_page |
29 |
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