Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia
Glacial periods are recognized to be dustier than interglacials, but the conditions leading to greater dust mobilization are poorly defined. Here we present a new high-resolution dust record based on 230Th-normalized 4He flux from Ocean Drilling Program site 882 in the Subarctic North Pacific coveri...
Published in: | Geophysical Research Letters |
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Language: | English |
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American Geophysical Union
2017
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Online Access: | https://boris.unibe.ch/99479/1/Serno%20et%20al.,%2017.pdf https://boris.unibe.ch/99479/ http://onlinelibrary.wiley.com/doi/10.1002/2016GL072345/full |
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ftunivbern:oai:boris.unibe.ch:99479 2023-08-20T04:10:02+02:00 Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia Serno, Sascha Winckler, Gisela Anderson, Robert F. Jaccard, Samuel Kienast, Stephanie S. Haug, Gerald H. 2017-04-22 application/pdf https://boris.unibe.ch/99479/1/Serno%20et%20al.,%2017.pdf https://boris.unibe.ch/99479/ http://onlinelibrary.wiley.com/doi/10.1002/2016GL072345/full eng eng American Geophysical Union https://boris.unibe.ch/99479/ info:eu-repo/semantics/openAccess Serno, Sascha; Winckler, Gisela; Anderson, Robert F.; Jaccard, Samuel; Kienast, Stephanie S.; Haug, Gerald H. (2017). Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia. Geophysical Research Letters, 44(8), pp. 3796-3805. American Geophysical Union 10.1002/2016GL072345 <http://dx.doi.org/10.1002/2016GL072345> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2017 ftunivbern https://doi.org/10.1002/2016GL072345 2023-07-31T21:35:39Z Glacial periods are recognized to be dustier than interglacials, but the conditions leading to greater dust mobilization are poorly defined. Here we present a new high-resolution dust record based on 230Th-normalized 4He flux from Ocean Drilling Program site 882 in the Subarctic North Pacific covering the last 170,000 years. By analogy with modern relationships, we infer the mechanisms controlling orbital-scale dust storm variability in East Asia. We propose that orbital-scale dust flux variability is the result of an expansion of the dust season into summer, in addition to more intense dust storms during spring and fall. The primary drivers influencing dust flux include summer insolation at subarctic latitudes and variable Siberian alpine glaciation, which together control the cold air reservoir in Siberia. Changes in the extent of the Northern Hemisphere ice sheets may be a secondary control. Article in Journal/Newspaper Subarctic Siberia BORIS (Bern Open Repository and Information System, University of Bern) Pacific Geophysical Research Letters 44 8 3796 3805 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology Serno, Sascha Winckler, Gisela Anderson, Robert F. Jaccard, Samuel Kienast, Stephanie S. Haug, Gerald H. Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia |
topic_facet |
550 Earth sciences & geology |
description |
Glacial periods are recognized to be dustier than interglacials, but the conditions leading to greater dust mobilization are poorly defined. Here we present a new high-resolution dust record based on 230Th-normalized 4He flux from Ocean Drilling Program site 882 in the Subarctic North Pacific covering the last 170,000 years. By analogy with modern relationships, we infer the mechanisms controlling orbital-scale dust storm variability in East Asia. We propose that orbital-scale dust flux variability is the result of an expansion of the dust season into summer, in addition to more intense dust storms during spring and fall. The primary drivers influencing dust flux include summer insolation at subarctic latitudes and variable Siberian alpine glaciation, which together control the cold air reservoir in Siberia. Changes in the extent of the Northern Hemisphere ice sheets may be a secondary control. |
format |
Article in Journal/Newspaper |
author |
Serno, Sascha Winckler, Gisela Anderson, Robert F. Jaccard, Samuel Kienast, Stephanie S. Haug, Gerald H. |
author_facet |
Serno, Sascha Winckler, Gisela Anderson, Robert F. Jaccard, Samuel Kienast, Stephanie S. Haug, Gerald H. |
author_sort |
Serno, Sascha |
title |
Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia |
title_short |
Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia |
title_full |
Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia |
title_fullStr |
Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia |
title_full_unstemmed |
Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia |
title_sort |
change in dust seasonality as the primary driver for orbital scale dust storm variability in east asia |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
https://boris.unibe.ch/99479/1/Serno%20et%20al.,%2017.pdf https://boris.unibe.ch/99479/ http://onlinelibrary.wiley.com/doi/10.1002/2016GL072345/full |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic Siberia |
genre_facet |
Subarctic Siberia |
op_source |
Serno, Sascha; Winckler, Gisela; Anderson, Robert F.; Jaccard, Samuel; Kienast, Stephanie S.; Haug, Gerald H. (2017). Change in dust seasonality as the primary driver for orbital scale dust storm variability in East Asia. Geophysical Research Letters, 44(8), pp. 3796-3805. American Geophysical Union 10.1002/2016GL072345 <http://dx.doi.org/10.1002/2016GL072345> |
op_relation |
https://boris.unibe.ch/99479/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016GL072345 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
8 |
container_start_page |
3796 |
op_container_end_page |
3805 |
_version_ |
1774723923583172608 |