Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica
Ice core data from Antarctica provide detailed insights into the characteristics of past climate, atmospheric circulation, as well as changes in the aerosol load of the atmosphere. We present high-resolution records of soluble calcium (Ca 2+ ), non-sea-salt soluble calcium (nssCa 2+ ), and particula...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2012
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-8-609-2012 https://doaj.org/article/7d8ada99370f42c7a33fc52162dc965b |
id |
ftdoajarticles:oai:doaj.org/article:7d8ada99370f42c7a33fc52162dc965b |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:7d8ada99370f42c7a33fc52162dc965b 2023-05-15T13:33:21+02:00 Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica F. Lambert M. Bigler J. P. Steffensen M. Hutterli H. Fischer 2012-03-01T00:00:00Z https://doi.org/10.5194/cp-8-609-2012 https://doaj.org/article/7d8ada99370f42c7a33fc52162dc965b EN eng Copernicus Publications http://www.clim-past.net/8/609/2012/cp-8-609-2012.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-8-609-2012 1814-9324 1814-9332 https://doaj.org/article/7d8ada99370f42c7a33fc52162dc965b Climate of the Past, Vol 8, Iss 2, Pp 609-623 (2012) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2012 ftdoajarticles https://doi.org/10.5194/cp-8-609-2012 2022-12-31T06:25:49Z Ice core data from Antarctica provide detailed insights into the characteristics of past climate, atmospheric circulation, as well as changes in the aerosol load of the atmosphere. We present high-resolution records of soluble calcium (Ca 2+ ), non-sea-salt soluble calcium (nssCa 2+ ), and particulate mineral dust aerosol from the East Antarctic Plateau at a depth resolution of 1 cm, spanning the past 800 000 years. Despite the fact that all three parameters are largely dust-derived, the ratio of nssCa 2+ to particulate dust is dependent on the particulate dust concentration itself. We used principal component analysis to extract the joint climatic signal and produce a common high-resolution record of dust flux. This new record is used to identify Antarctic warming events during the past eight glacial periods. The phasing of dust flux and CO 2 changes during glacial-interglacial transitions reveals that iron fertilization of the Southern Ocean during the past nine glacial terminations was not the dominant factor in the deglacial rise of CO 2 concentrations. Rapid changes in dust flux during glacial terminations and Antarctic warming events point to a rapid response of the southern westerly wind belt in the region of southern South American dust sources on changing climate conditions. The clear lead of these dust changes on temperature rise suggests that an atmospheric reorganization occurred in the Southern Hemisphere before the Southern Ocean warmed significantly. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Climate of the Past 8 2 609 623 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 F. Lambert M. Bigler J. P. Steffensen M. Hutterli H. Fischer Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
Ice core data from Antarctica provide detailed insights into the characteristics of past climate, atmospheric circulation, as well as changes in the aerosol load of the atmosphere. We present high-resolution records of soluble calcium (Ca 2+ ), non-sea-salt soluble calcium (nssCa 2+ ), and particulate mineral dust aerosol from the East Antarctic Plateau at a depth resolution of 1 cm, spanning the past 800 000 years. Despite the fact that all three parameters are largely dust-derived, the ratio of nssCa 2+ to particulate dust is dependent on the particulate dust concentration itself. We used principal component analysis to extract the joint climatic signal and produce a common high-resolution record of dust flux. This new record is used to identify Antarctic warming events during the past eight glacial periods. The phasing of dust flux and CO 2 changes during glacial-interglacial transitions reveals that iron fertilization of the Southern Ocean during the past nine glacial terminations was not the dominant factor in the deglacial rise of CO 2 concentrations. Rapid changes in dust flux during glacial terminations and Antarctic warming events point to a rapid response of the southern westerly wind belt in the region of southern South American dust sources on changing climate conditions. The clear lead of these dust changes on temperature rise suggests that an atmospheric reorganization occurred in the Southern Hemisphere before the Southern Ocean warmed significantly. |
format |
Article in Journal/Newspaper |
author |
F. Lambert M. Bigler J. P. Steffensen M. Hutterli H. Fischer |
author_facet |
F. Lambert M. Bigler J. P. Steffensen M. Hutterli H. Fischer |
author_sort |
F. Lambert |
title |
Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica |
title_short |
Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica |
title_full |
Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica |
title_fullStr |
Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica |
title_full_unstemmed |
Centennial mineral dust variability in high-resolution ice core data from Dome C, Antarctica |
title_sort |
centennial mineral dust variability in high-resolution ice core data from dome c, antarctica |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/cp-8-609-2012 https://doaj.org/article/7d8ada99370f42c7a33fc52162dc965b |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica ice core Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica ice core Southern Ocean |
op_source |
Climate of the Past, Vol 8, Iss 2, Pp 609-623 (2012) |
op_relation |
http://www.clim-past.net/8/609/2012/cp-8-609-2012.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-8-609-2012 1814-9324 1814-9332 https://doaj.org/article/7d8ada99370f42c7a33fc52162dc965b |
op_doi |
https://doi.org/10.5194/cp-8-609-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
2 |
container_start_page |
609 |
op_container_end_page |
623 |
_version_ |
1766041521878990848 |