Precession-band variance missing from East Asian monsoon runoff
Speleothem CaCO3 δ18O is a commonly employed paleomonsoon proxy. However, inferring local rainfall amount from speleothem δ18O can be complicated due to changing source water δ18O, temperature effects, and rainout over the moisture transport path. These complications are addressed using δ18O of plan...
Published in: | Nature Communications |
---|---|
Main Authors: | , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Nature Publishing Group UK
2018
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105601/ http://www.ncbi.nlm.nih.gov/pubmed/30135494 https://doi.org/10.1038/s41467-018-05814-0 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:6105601 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:6105601 2023-05-15T16:40:49+02:00 Precession-band variance missing from East Asian monsoon runoff Clemens, S. C. Holbourn, A. Kubota, Y. Lee, K. E. Liu, Z. Chen, G. Nelson, A. Fox-Kemper, B. 2018-08-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105601/ http://www.ncbi.nlm.nih.gov/pubmed/30135494 https://doi.org/10.1038/s41467-018-05814-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105601/ http://www.ncbi.nlm.nih.gov/pubmed/30135494 http://dx.doi.org/10.1038/s41467-018-05814-0 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-05814-0 2018-09-02T00:46:27Z Speleothem CaCO3 δ18O is a commonly employed paleomonsoon proxy. However, inferring local rainfall amount from speleothem δ18O can be complicated due to changing source water δ18O, temperature effects, and rainout over the moisture transport path. These complications are addressed using δ18O of planktonic foraminiferal CaCO3, offshore from the Yangtze River Valley (YRV). The advantage is that the effects of global seawater δ18O and local temperature changes can be quantitatively removed, yielding a record of local seawater δ18O, a proxy that responds primarily to dilution by local precipitation and runoff. Whereas YRV speleothem δ18O is dominated by precession-band (23 ky) cyclicity, local seawater δ18O is dominated by eccentricity (100 ky) and obliquity (41 ky) cycles, with almost no precession-scale variance. These results, consistent with records outside the YRV, suggest that East Asian monsoon rainfall is more sensitive to greenhouse gas and high-latitude ice sheet forcing than to direct insolation forcing. Text Ice Sheet PubMed Central (PMC) Nature Communications 9 1 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article Clemens, S. C. Holbourn, A. Kubota, Y. Lee, K. E. Liu, Z. Chen, G. Nelson, A. Fox-Kemper, B. Precession-band variance missing from East Asian monsoon runoff |
topic_facet |
Article |
description |
Speleothem CaCO3 δ18O is a commonly employed paleomonsoon proxy. However, inferring local rainfall amount from speleothem δ18O can be complicated due to changing source water δ18O, temperature effects, and rainout over the moisture transport path. These complications are addressed using δ18O of planktonic foraminiferal CaCO3, offshore from the Yangtze River Valley (YRV). The advantage is that the effects of global seawater δ18O and local temperature changes can be quantitatively removed, yielding a record of local seawater δ18O, a proxy that responds primarily to dilution by local precipitation and runoff. Whereas YRV speleothem δ18O is dominated by precession-band (23 ky) cyclicity, local seawater δ18O is dominated by eccentricity (100 ky) and obliquity (41 ky) cycles, with almost no precession-scale variance. These results, consistent with records outside the YRV, suggest that East Asian monsoon rainfall is more sensitive to greenhouse gas and high-latitude ice sheet forcing than to direct insolation forcing. |
format |
Text |
author |
Clemens, S. C. Holbourn, A. Kubota, Y. Lee, K. E. Liu, Z. Chen, G. Nelson, A. Fox-Kemper, B. |
author_facet |
Clemens, S. C. Holbourn, A. Kubota, Y. Lee, K. E. Liu, Z. Chen, G. Nelson, A. Fox-Kemper, B. |
author_sort |
Clemens, S. C. |
title |
Precession-band variance missing from East Asian monsoon runoff |
title_short |
Precession-band variance missing from East Asian monsoon runoff |
title_full |
Precession-band variance missing from East Asian monsoon runoff |
title_fullStr |
Precession-band variance missing from East Asian monsoon runoff |
title_full_unstemmed |
Precession-band variance missing from East Asian monsoon runoff |
title_sort |
precession-band variance missing from east asian monsoon runoff |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105601/ http://www.ncbi.nlm.nih.gov/pubmed/30135494 https://doi.org/10.1038/s41467-018-05814-0 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6105601/ http://www.ncbi.nlm.nih.gov/pubmed/30135494 http://dx.doi.org/10.1038/s41467-018-05814-0 |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-05814-0 |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766031242161029120 |