Orbital Controls on North Pacific Dust Flux During the Late Quaternary
Airborne mineral dust is sensitive to climatic changes, but its response to orbital forcing is still not fully understood. Here, we present a reconstruction of dust input to the Subarctic Pacific Ocean covering the past 190 kyr. The dust composition record is indicative of source moisture conditions...
Main Authors: | , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2024
|
Subjects: | |
Online Access: | https://refubium.fu-berlin.de/handle/fub188/42971 https://doi.org/10.17169/refubium-42685 https://doi.org/10.1029/2023GL106631 |
id |
ftfuberlin:oai:refubium.fu-berlin.de:fub188/42971 |
---|---|
record_format |
openpolar |
spelling |
ftfuberlin:oai:refubium.fu-berlin.de:fub188/42971 2024-04-21T08:12:25+00:00 Orbital Controls on North Pacific Dust Flux During the Late Quaternary Zhong, Yi Liu, Yanguang Yang, Hu Yin, Qiuzhen Wilson, David J. Lu, Zhengyao Jaccard, Samuel L. Struve, Torben Clift, Peter D. Kaboth-Bahr, Stefanie 2024 14 Seiten application/pdf https://refubium.fu-berlin.de/handle/fub188/42971 https://doi.org/10.17169/refubium-42685 https://doi.org/10.1029/2023GL106631 eng eng https://refubium.fu-berlin.de/handle/fub188/42971 http://dx.doi.org/10.17169/refubium-42685 doi:10.1029/2023GL106631 https://creativecommons.org/licenses/by-nc-nd/4.0/ dust input Subarctic Pacific Ocean reconstruction ddc:550 doc-type:article 2024 ftfuberlin https://doi.org/10.17169/refubium-4268510.1029/2023GL106631 2024-03-27T15:22:14Z Airborne mineral dust is sensitive to climatic changes, but its response to orbital forcing is still not fully understood. Here, we present a reconstruction of dust input to the Subarctic Pacific Ocean covering the past 190 kyr. The dust composition record is indicative of source moisture conditions, which were dominated by precessional variations. In contrast, the dust flux record is dominated by obliquity variations and displays an out-of-phase relationship with a dust record from the mid-latitude North Pacific Ocean. Climate model simulations suggest precession likely drove changes in the aridity and extent of dust source regions. Additionally, the obliquity variations in dust flux can be explained by meridional shifts in the North Pacific westerly jet, driven by changes in the meridional atmospheric temperature gradient. Overall, our findings suggest that North Pacific dust input was primarily modulated by orbital-controlled source aridity and the strength and position of the westerly winds. Article in Journal/Newspaper Subarctic Freie Universität Berlin: Refubium (FU Berlin) |
institution |
Open Polar |
collection |
Freie Universität Berlin: Refubium (FU Berlin) |
op_collection_id |
ftfuberlin |
language |
English |
topic |
dust input Subarctic Pacific Ocean reconstruction ddc:550 |
spellingShingle |
dust input Subarctic Pacific Ocean reconstruction ddc:550 Zhong, Yi Liu, Yanguang Yang, Hu Yin, Qiuzhen Wilson, David J. Lu, Zhengyao Jaccard, Samuel L. Struve, Torben Clift, Peter D. Kaboth-Bahr, Stefanie Orbital Controls on North Pacific Dust Flux During the Late Quaternary |
topic_facet |
dust input Subarctic Pacific Ocean reconstruction ddc:550 |
description |
Airborne mineral dust is sensitive to climatic changes, but its response to orbital forcing is still not fully understood. Here, we present a reconstruction of dust input to the Subarctic Pacific Ocean covering the past 190 kyr. The dust composition record is indicative of source moisture conditions, which were dominated by precessional variations. In contrast, the dust flux record is dominated by obliquity variations and displays an out-of-phase relationship with a dust record from the mid-latitude North Pacific Ocean. Climate model simulations suggest precession likely drove changes in the aridity and extent of dust source regions. Additionally, the obliquity variations in dust flux can be explained by meridional shifts in the North Pacific westerly jet, driven by changes in the meridional atmospheric temperature gradient. Overall, our findings suggest that North Pacific dust input was primarily modulated by orbital-controlled source aridity and the strength and position of the westerly winds. |
format |
Article in Journal/Newspaper |
author |
Zhong, Yi Liu, Yanguang Yang, Hu Yin, Qiuzhen Wilson, David J. Lu, Zhengyao Jaccard, Samuel L. Struve, Torben Clift, Peter D. Kaboth-Bahr, Stefanie |
author_facet |
Zhong, Yi Liu, Yanguang Yang, Hu Yin, Qiuzhen Wilson, David J. Lu, Zhengyao Jaccard, Samuel L. Struve, Torben Clift, Peter D. Kaboth-Bahr, Stefanie |
author_sort |
Zhong, Yi |
title |
Orbital Controls on North Pacific Dust Flux During the Late Quaternary |
title_short |
Orbital Controls on North Pacific Dust Flux During the Late Quaternary |
title_full |
Orbital Controls on North Pacific Dust Flux During the Late Quaternary |
title_fullStr |
Orbital Controls on North Pacific Dust Flux During the Late Quaternary |
title_full_unstemmed |
Orbital Controls on North Pacific Dust Flux During the Late Quaternary |
title_sort |
orbital controls on north pacific dust flux during the late quaternary |
publishDate |
2024 |
url |
https://refubium.fu-berlin.de/handle/fub188/42971 https://doi.org/10.17169/refubium-42685 https://doi.org/10.1029/2023GL106631 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
https://refubium.fu-berlin.de/handle/fub188/42971 http://dx.doi.org/10.17169/refubium-42685 doi:10.1029/2023GL106631 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.17169/refubium-4268510.1029/2023GL106631 |
_version_ |
1796932467243876352 |