Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China
Monsoon precipitation in East China shows distinct spatial distribution and its variability is closely linked with the changes of the East Asian summer monsoon (EASM). Located in the transition zone between the southern subtropical humid climate and the northern warm temperate semi-humid climate, ce...
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:45311 2023-05-15T16:30:15+02:00 Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China Cai, Yanjun Cheng, Xing Ma, Le Mao, Ruixue Breitenbach, Sebastian Zhang, Haiwei Xue, Gang Cheng, Hai Edwards, R. Lawrence An, Zhisheng 2021-03 text https://nrl.northumbria.ac.uk/id/eprint/45311/ https://doi.org/10.1016/j.epsl.2021.116758 https://nrl.northumbria.ac.uk/id/eprint/45311/1/Cai_accepted_EPSL_raw.pdf en eng Elsevier https://nrl.northumbria.ac.uk/id/eprint/45311/1/Cai_accepted_EPSL_raw.pdf Cai, Yanjun, Cheng, Xing, Ma, Le, Mao, Ruixue, Breitenbach, Sebastian, Zhang, Haiwei, Xue, Gang, Cheng, Hai, Edwards, R. Lawrence and An, Zhisheng (2021) Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China. Earth and Planetary Science Letters, 558. p. 116758. ISSN 0012-821X cc_by_nc_nd_4_0 CC-BY-NC-ND F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2021 ftunivnorthumb https://doi.org/10.1016/j.epsl.2021.116758 2022-09-25T06:13:18Z Monsoon precipitation in East China shows distinct spatial distribution and its variability is closely linked with the changes of the East Asian summer monsoon (EASM). Located in the transition zone between the southern subtropical humid climate and the northern warm temperate semi-humid climate, central China is a core region for recognizing and understanding the spatio-temporal variability of the EASM. Using U-series dating and stable isotope analysis on five stalagmites (MG-1, MG-2, MG-7, MG-40 and MG-64) from Magou Cave, Henan Province, Central China, we construct a high-resolution and precisely dated composite stalagmite O time series covering most of the Holocene. This composite record reveals variations in precipitation O between 11.7 and 1.1 ka BP with average resolution of ∼4 yrs. The Magou composite record demonstrates that EASM intensity dominates long-term changes in precipitation O, which generally follows the northern hemisphere summer insolation (NHSI) trend. Both, Ensemble Empirical Mode Decomposition (EEMD) and wavelet filtering analyses real that the amplitudes of long-term (100-500 and 500-3000 yrs) components were slightly reduced between 8.5 and 4.9 ka BP, implying a weakened influence of climatic forcings on centennial and even millennial timescales during this warm period. Variance on 1-30-yr timescales is relatively low and ascribed to sampling resolution. Fourteen weak EASM intervals, including the 8.2 ka event, were identified within the period corresponding broadly with the Holocene Megathermal. Since no cold excursions other than the 8.2 ka event are found in the Greenland ice core records, we tentatively propose that oscillations in tropical sea surface temperature (SST) likely play an important role in steering other weak monsoon events. Aligning the Magou composite record and other moisture records with archaeological records from the study region, it seems that climate change influenced both the spatial distribution and agricultural practices of ancient cultures. However, overall ... Article in Journal/Newspaper Greenland Greenland ice core ice core Northumbria University, Newcastle: Northumbria Research Link (NRL) Greenland Earth and Planetary Science Letters 558 116758 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Cai, Yanjun Cheng, Xing Ma, Le Mao, Ruixue Breitenbach, Sebastian Zhang, Haiwei Xue, Gang Cheng, Hai Edwards, R. Lawrence An, Zhisheng Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Monsoon precipitation in East China shows distinct spatial distribution and its variability is closely linked with the changes of the East Asian summer monsoon (EASM). Located in the transition zone between the southern subtropical humid climate and the northern warm temperate semi-humid climate, central China is a core region for recognizing and understanding the spatio-temporal variability of the EASM. Using U-series dating and stable isotope analysis on five stalagmites (MG-1, MG-2, MG-7, MG-40 and MG-64) from Magou Cave, Henan Province, Central China, we construct a high-resolution and precisely dated composite stalagmite O time series covering most of the Holocene. This composite record reveals variations in precipitation O between 11.7 and 1.1 ka BP with average resolution of ∼4 yrs. The Magou composite record demonstrates that EASM intensity dominates long-term changes in precipitation O, which generally follows the northern hemisphere summer insolation (NHSI) trend. Both, Ensemble Empirical Mode Decomposition (EEMD) and wavelet filtering analyses real that the amplitudes of long-term (100-500 and 500-3000 yrs) components were slightly reduced between 8.5 and 4.9 ka BP, implying a weakened influence of climatic forcings on centennial and even millennial timescales during this warm period. Variance on 1-30-yr timescales is relatively low and ascribed to sampling resolution. Fourteen weak EASM intervals, including the 8.2 ka event, were identified within the period corresponding broadly with the Holocene Megathermal. Since no cold excursions other than the 8.2 ka event are found in the Greenland ice core records, we tentatively propose that oscillations in tropical sea surface temperature (SST) likely play an important role in steering other weak monsoon events. Aligning the Magou composite record and other moisture records with archaeological records from the study region, it seems that climate change influenced both the spatial distribution and agricultural practices of ancient cultures. However, overall ... |
format |
Article in Journal/Newspaper |
author |
Cai, Yanjun Cheng, Xing Ma, Le Mao, Ruixue Breitenbach, Sebastian Zhang, Haiwei Xue, Gang Cheng, Hai Edwards, R. Lawrence An, Zhisheng |
author_facet |
Cai, Yanjun Cheng, Xing Ma, Le Mao, Ruixue Breitenbach, Sebastian Zhang, Haiwei Xue, Gang Cheng, Hai Edwards, R. Lawrence An, Zhisheng |
author_sort |
Cai, Yanjun |
title |
Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China |
title_short |
Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China |
title_full |
Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China |
title_fullStr |
Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China |
title_full_unstemmed |
Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China |
title_sort |
holocene variability of east asian summer monsoon as viewed from the speleothem δ18o records in central china |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://nrl.northumbria.ac.uk/id/eprint/45311/ https://doi.org/10.1016/j.epsl.2021.116758 https://nrl.northumbria.ac.uk/id/eprint/45311/1/Cai_accepted_EPSL_raw.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core ice core |
genre_facet |
Greenland Greenland ice core ice core |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/45311/1/Cai_accepted_EPSL_raw.pdf Cai, Yanjun, Cheng, Xing, Ma, Le, Mao, Ruixue, Breitenbach, Sebastian, Zhang, Haiwei, Xue, Gang, Cheng, Hai, Edwards, R. Lawrence and An, Zhisheng (2021) Holocene variability of East Asian summer monsoon as viewed from the speleothem δ18O records in central China. Earth and Planetary Science Letters, 558. p. 116758. ISSN 0012-821X |
op_rights |
cc_by_nc_nd_4_0 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.epsl.2021.116758 |
container_title |
Earth and Planetary Science Letters |
container_volume |
558 |
container_start_page |
116758 |
_version_ |
1766019963285405696 |