Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean
Changing climate conditions affect dust emissions and the global dust cycle, which in turn affects climate and biogeochemistry. In this study we use observationally constrained model reconstructions of the global dust cycle since the Last Glacial Maximum, combined with different simplified assumptio...
Published in: | Geophysical Research Letters |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/9531201e-bad3-432f-b488-3cf15dad041d 2024-10-13T14:10:42+00:00 Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean Albani, S. Mahowald, N. M. Murphy, L. N. Raiswell, R. Moore, J. K. Anderson, R. F. McGee, D. Bradtmiller, L. I. Delmonte, B. Hesse, P. P. Mayewski, P. A. 2016-04-28 https://researchers.mq.edu.au/en/publications/9531201e-bad3-432f-b488-3cf15dad041d https://doi.org/10.1002/2016GL067911 http://www.scopus.com/inward/record.url?scp=84992302082&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Albani , S , Mahowald , N M , Murphy , L N , Raiswell , R , Moore , J K , Anderson , R F , McGee , D , Bradtmiller , L I , Delmonte , B , Hesse , P P & Mayewski , P A 2016 , ' Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean ' , Geophysical Research Letters , vol. 43 , no. 8 , pp. 3944-3954 . https://doi.org/10.1002/2016GL067911 dust holocene iron fertilization Last Glacial Maximum paleodust soluble iron article 2016 ftmacquarieunicr https://doi.org/10.1002/2016GL067911 2024-09-26T15:15:55Z Changing climate conditions affect dust emissions and the global dust cycle, which in turn affects climate and biogeochemistry. In this study we use observationally constrained model reconstructions of the global dust cycle since the Last Glacial Maximum, combined with different simplified assumptions of atmospheric and sea ice processing of dust-borne iron, to provide estimates of soluble iron deposition to the oceans. For different climate conditions, we discuss uncertainties in model-based estimates of atmospheric processing and dust deposition to key oceanic regions, highlighting the large degree of uncertainty of this important variable for ocean biogeochemistry and the global carbon cycle. We also show the role of sea ice acting as a time buffer and processing agent, which results in a delayed and pulse-like soluble iron release into the ocean during the melting season, with monthly peaks up to ~17 Gg/month released into the Southern Oceans during the Last Glacial Maximum (LGM). Article in Journal/Newspaper Sea ice Macquarie University Research Portal Geophysical Research Letters 43 8 3944 3954 |
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Open Polar |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
topic |
dust holocene iron fertilization Last Glacial Maximum paleodust soluble iron |
spellingShingle |
dust holocene iron fertilization Last Glacial Maximum paleodust soluble iron Albani, S. Mahowald, N. M. Murphy, L. N. Raiswell, R. Moore, J. K. Anderson, R. F. McGee, D. Bradtmiller, L. I. Delmonte, B. Hesse, P. P. Mayewski, P. A. Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean |
topic_facet |
dust holocene iron fertilization Last Glacial Maximum paleodust soluble iron |
description |
Changing climate conditions affect dust emissions and the global dust cycle, which in turn affects climate and biogeochemistry. In this study we use observationally constrained model reconstructions of the global dust cycle since the Last Glacial Maximum, combined with different simplified assumptions of atmospheric and sea ice processing of dust-borne iron, to provide estimates of soluble iron deposition to the oceans. For different climate conditions, we discuss uncertainties in model-based estimates of atmospheric processing and dust deposition to key oceanic regions, highlighting the large degree of uncertainty of this important variable for ocean biogeochemistry and the global carbon cycle. We also show the role of sea ice acting as a time buffer and processing agent, which results in a delayed and pulse-like soluble iron release into the ocean during the melting season, with monthly peaks up to ~17 Gg/month released into the Southern Oceans during the Last Glacial Maximum (LGM). |
format |
Article in Journal/Newspaper |
author |
Albani, S. Mahowald, N. M. Murphy, L. N. Raiswell, R. Moore, J. K. Anderson, R. F. McGee, D. Bradtmiller, L. I. Delmonte, B. Hesse, P. P. Mayewski, P. A. |
author_facet |
Albani, S. Mahowald, N. M. Murphy, L. N. Raiswell, R. Moore, J. K. Anderson, R. F. McGee, D. Bradtmiller, L. I. Delmonte, B. Hesse, P. P. Mayewski, P. A. |
author_sort |
Albani, S. |
title |
Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean |
title_short |
Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean |
title_full |
Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean |
title_fullStr |
Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean |
title_full_unstemmed |
Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean |
title_sort |
paleodust variability since the last glacial maximum and implications for iron inputs to the ocean |
publishDate |
2016 |
url |
https://researchers.mq.edu.au/en/publications/9531201e-bad3-432f-b488-3cf15dad041d https://doi.org/10.1002/2016GL067911 http://www.scopus.com/inward/record.url?scp=84992302082&partnerID=8YFLogxK |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Albani , S , Mahowald , N M , Murphy , L N , Raiswell , R , Moore , J K , Anderson , R F , McGee , D , Bradtmiller , L I , Delmonte , B , Hesse , P P & Mayewski , P A 2016 , ' Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean ' , Geophysical Research Letters , vol. 43 , no. 8 , pp. 3944-3954 . https://doi.org/10.1002/2016GL067911 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1002/2016GL067911 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
8 |
container_start_page |
3944 |
op_container_end_page |
3954 |
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1812818136579178496 |